B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
 B01 - 
B07
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION
Method
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/LIQUID OR SOLID/GAS SEPARATION
Method
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/SOLID SEPARATION
Method
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB07B
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
Apparatus
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB04B, B04C
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
  
PRINTING
 B41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS (reproduction or duplication of pictures or patterns by scanning and converting into electrical signals H04N)  [4]
 B41J
TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS (composing B41B; printing on special surfaces B41F; laundry marking B41K; erasers, rubbers or erasing devices B43L 19/00; fluid media for correction of typographical errors by coating C09D 10/00; recording the results of measuring G01; recognition or presentation of data, marking record carriers in digital fashion, e.g. by punching, G06K; franking or ticket-printing and issuing apparatus G07B; electric keyboard switches, in general H01H 13/70, H03K 17/94; coding in connection with keyboards or like devices, in general H03M 11/00; receivers or transmitters for transmission of digital information H04L; transmission or reproduction of documents, or the like, e.g. facsimile transmission, H04N 1/00; printing mechanisms specially adapted for apparatus, e.g. cash registers, weighing machines, producing records of their own performance, see the relevant subclasses)
 B41J

Note(s)

  1. This subclass covers:
    • manually controlled power-operated apparatus or apparatus of this type with additional control by input of recorded information, e.g. on punched cards or tapes;
    • the "print-out" features of apparatus controlled by record carriers or electric signals in so far as these are of general interest, e.g. impression, inking, line-spacing mechanisms, printing heads.  [5]
  2. This subclass does not cover:
    • electrical features of apparatus controlled by record carriers or electric signals and of interest apart from the "print-out" features of said apparatus;
    • apparatus controlled by record carriers or electric signals, as a whole.  [5]
  3. In this subclass, the following term is used with the meaning indicated:
    • "paper" covers also similar flexible copy material;  [3]
    • "printing material" covers both paper and temporary record carriers from which records are transferred to a paper, but does not cover printing masters, e.g. formes.  [5]
 B41J
Subclass index
KINDS OF APPARATUS
characterised by the mounting, arrangement, or disposition of the types or dies 1/00
characterised by the printing or marking process for which they are designed 2/00
characterised by the purpose 3/00
COMMON DETAILS OR ACCESSORIES
Character selection 5/00, 7/00
Hammer impression 9/00
Supporting or handling copy or duplicating material 11/00 - 15/00
Transfer material
of page-width 17/00
in ribbon form; ink ribbon cartridges 31/00, 33/00, 35/00; 32/00
Inking 27/00
Spacing 19/00
Drives 23/00
Particular operations 21/00
Others 25/00, 29/00, 35/00
 B41J 1/00 - 
B41J 3/00
Kinds of typewriters or of selective printing mechanisms
P:20 B41J 1/00
Typewriters or selective printing mechanisms characterised by the mounting, arrangement, or disposition of the types or dies (non-selective embossing B44B 5/00)
 B41J 1/02
·  with separate or detached types or dies
 B41J 1/04
·  with types or dies carried upon levers or radial arms, e.g. manually operated (B41J 1/16 takes precedence)
 B41J 1/06
·  ·  on power-operated levers or arms
 B41J 1/08
·  with types or dies carried on sliding bars or rods
 B41J 1/10
·  ·  on end surfaces thereof
 B41J 1/12
·  ·  on side surfaces thereof, e.g. fixed thereto
 B41J 1/14
·  ·  ·  the types or dies being movable relative to the bars or rods (mounted on flexible bars or rods B41J 1/16)
 B41J 1/16
·  with types or dies arranged in stationary or sliding cases or frames or upon flexible strips, plates, bars, or rods
 B41J 1/18
·  with types or dies strung on wires or rods
 B41J 1/20
·  with types or dies mounted on endless bands or the like
 B41J 1/22
·  with types or dies mounted on carriers rotatable for selection
 B41J 1/24
·  ·  the plane of the type or die face being perpendicular to the axis of rotation (B41J 1/60 takes precedence)
 B41J 1/26
·  ·  ·  Carriers moving for impression (B41J 1/27 takes precedence)  [3]
 B41J 1/27
·  ·  ·  Carriers moving during impression  [3]
 B41J 1/28
·  ·  ·  Carriers stationary for impression, e.g. with the types or dies not moving relative to the carriers
 B41J 1/30
·  ·  ·  ·  with the types or dies moving relative to the carriers or mounted on flexible carriers
 B41J 1/32
·  ·  the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers (B41J 1/60 takes precedence)
 B41J 1/34
·  ·  ·  Carriers rotating during impression
 B41J 1/36
·  ·  ·  Carriers sliding for impression, e.g. manually operated
 B41J 1/38
·  ·  ·  ·  power operated
 B41J 1/40
·  ·  ·  Carriers swinging for impression
 B41J 1/42
·  ·  ·  ·  about an axis parallel to the axis of rotation of the carrier
 B41J 1/44
·  ·  ·  Carriers stationary for impression
 B41J 1/46
·  ·  ·  ·  Types or dies fixed on wheel, drum, cylinder, or like carriers
 B41J 1/48
·  ·  ·  ·  ·  with a plurality of carriers, one for each character space
 B41J 1/50
·  ·  ·  ·  ·  with one or more carriers travelling across copy material in letter-space direction
 B41J 1/52
·  ·  ·  ·  ·  with copy material moving in the letter-space direction, and carrier mounting being fixed relative to the machine
 B41J 1/54
·  ·  ·  ·  Types or dies movable on wheel, drum, cylinder, or like carriers
 B41J 1/56
·  ·  ·  ·  Types or dies on shuttles or like loose carriers
 B41J 1/58
·  ·  ·  ·  Types or dies upon arcuate bars
 B41J 1/60
·  with types or dies on spherical, truncated-spherical, or like surfaces
P:10 B41J 2/00
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed (mounting, arrangement, or disposition of types or dies B41J 1/00; marking methods B41M 5/00; structure or manufacture of heads, e.g. inductive, for recording by magnetisation or demagnetisation of a record carrier G11B 5/127; heads for reproducing capacitive information G11B 9/07)  [5]
 B41J 2/00

Note(s)

  1. This group covers devices reproducing only a discrete number of tones, whereas group H04N 1/00 covers devices used for the reproduction of documents or the like, which devices are capable of reproducing continuous tone value scales.  [5]
  2. In this group, the following expressions are used with the meanings indicated:
    • "ink jet" involves the projection of ink on to the printing material, e.g. paper, through a nozzle as a stream of droplets or particles of colouring matter;
    • "continuous ink jet" means a jet of ink transformed into a continuous stream of droplets or particles of colouring matter after having left the nozzle;
    • "ink spray" means a spray of ink transported by a stream of charged particles or air on to the printing material.  [5]
 B41J 2/005
·  characterised by bringing liquid or particles selectively into contact with a printing material (printing by selective application of impact or pressure on a printing or impression-transfer material B41J 2/22)  [5]
 B41J 2/01
·  ·  Ink jet  [5]
 B41J 2/015
·  ·  ·  characterised by the jet generation process (B41J 2/215 takes precedence)  [5]
 B41J 2/02
·  ·  ·  ·  generating a continuous ink jet  [5]
 B41J 2/025
·  ·  ·  ·  ·  by vibration  [5]
 B41J 2/03
·  ·  ·  ·  ·  by pressure  [5]
 B41J 2/035
·  ·  ·  ·  ·  by electric or magnetic field  [5]
 B41J 2/04
·  ·  ·  ·  generating single droplets or particles on demand  [5]
 B41J 2/045
·  ·  ·  ·  ·  by pressure, e.g. electromechanical transducers  [5]
 B41J 2/05
·  ·  ·  ·  ·  ·  produced by the application of heat  [5]
 B41J 2/055
·  ·  ·  ·  ·  ·  Devices for absorbing or preventing back-pressure  [5]
 B41J 2/06
·  ·  ·  ·  ·  by electric or magnetic field  [5]
 B41J 2/065
·  ·  ·  ·  ·  ·  involving the preliminary making of ink protuberances  [5]
 B41J 2/07
·  ·  ·  characterised by jet control (B41J 2/205 takes precedence)  [5]
 B41J 2/075
·  ·  ·  ·  for many-valued deflection  [5]
 B41J 2/08
·  ·  ·  ·  ·  charge-control type  [5]
 B41J 2/085
·  ·  ·  ·  ·  ·  Charge means, e.g. electrodes  [5]
 B41J 2/09
·  ·  ·  ·  ·  ·  Deflection means  [5]
 B41J 2/095
·  ·  ·  ·  ·  electric field-control type  [5]
 B41J 2/10
·  ·  ·  ·  ·  magnetic field-control type  [5]
 B41J 2/105
·  ·  ·  ·  for binary-valued deflection  [5]
 B41J 2/11
·  ·  ·  ·  for ink spray  [5]
 B41J 2/115
·  ·  ·  ·  synchronising the droplet separation and charging time  [5]
 B41J 2/12
·  ·  ·  ·  testing or correcting charge or deflection  [5]
 B41J 2/125
·  ·  ·  ·  Sensors, e.g. deflection sensors  [5]
 B41J 2/13
·  ·  ·  ·  for inclination of printed pattern  [5]
 B41J 2/135
·  ·  ·  Nozzles  [5]
 B41J 2/14
·  ·  ·  ·  Structure thereof  [5]
 B41J 2/145
·  ·  ·  ·  Arrangement thereof  [5]
 B41J 2/15
·  ·  ·  ·  ·  for serial printing  [5]
 B41J 2/155
·  ·  ·  ·  ·  for line printing  [5]
 B41J 2/16
·  ·  ·  ·  Production of nozzles  [5]
 B41J 2/165
·  ·  ·  ·  Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles  [5]
 B41J 2/17
·  ·  ·  characterised by ink handling  [5]
 B41J 2/175
·  ·  ·  ·  Ink supply systems  [5]
 B41J 2/18
·  ·  ·  ·  Ink recirculation systems  [5]
 B41J 2/185
·  ·  ·  ·  ·  Ink-collectors; Ink-catchers  [5]
 B41J 2/19
·  ·  ·  ·  for removing air bubbles  [5]
 B41J 2/195
·  ·  ·  ·  for monitoring ink quality  [5]
 B41J 2/20
·  ·  ·  ·  for preventing or detecting contamination of compounds  [5]
 B41J 2/205
·  ·  ·  for printing a discrete number of tones (B41J 2/21 takes precedence)  [5]
 B41J 2/21
·  ·  ·  for multi-colour printing  [5]
 B41J 2/215
·  ·  by passing a medium, e.g. consisting of an air or particle stream, through an ink mist  [5]
 B41J 2/22
·  characterised by selective application of impact or pressure on a printing material or impression- transfer material  [5]
 B41J 2/225
·  ·  ballistic, e.g. using solid balls or pellets  [5]
 B41J 2/23
·  ·  using print wires  [5]
 B41J 2/235
·  ·  ·  Print head assemblies  [5]
 B41J 2/24
·  ·  ·  ·  serial printer type (B41J 2/25, B41J 2/265 take precedence)  [5]
 B41J 2/245
·  ·  ·  ·  line printer type (B41J 2/25, B41J 2/265 take precedence)  [5]
 B41J 2/25
·  ·  ·  ·  Print wires  [5]
 B41J 2/255
·  ·  ·  ·  ·  Arrangement of the print ends of the wires  [5]
 B41J 2/26
·  ·  ·  ·  ·  Connection of print wire and actuator  [5]
 B41J 2/265
·  ·  ·  ·  Guides for print wires  [5]
 B41J 2/27
·  ·  ·  Actuators for print wires  [5]
 B41J 2/275
·  ·  ·  ·  of clapper type (B41J 2/28 takes precedence)  [5]
 B41J 2/28
·  ·  ·  ·  of spring charge type, i.e. with mechanical power under electro-magnetic control  [5]
 B41J 2/285
·  ·  ·  ·  of plunger type  [5]
 B41J 2/29
·  ·  ·  ·  of moving-coil type  [5]
 B41J 2/295
·  ·  ·  ·  using piezo-electric elements  [5]
 B41J 2/30
·  ·  ·  Control circuits for actuators  [5]
 B41J 2/305
·  ·  ·  Ink supply apparatus (ink ribbons, ink-ribbon mechanisms B41J 31/00-B41J 35/00)  [5]
 B41J 2/31
·  ·  using a print element with projections on its surface impacted or impressed by hammers  [5]
 B41J 2/315
·  characterised by selective application of heat to a heat sensitive printing or impression-transfer material (B41J 2/385, B41J 2/435 take precedence)  [5]
 B41J 2/32
·  ·  using thermal heads  [5]
 B41J 2/325
·  ·  ·  by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet  [5]
 B41J 2/33
·  ·  ·  ·  from ink roller  [5]
 B41J 2/335
·  ·  ·  Structure of thermal heads  [5]
 B41J 2/34
·  ·  ·  ·  comprising semiconductors  [5]
 B41J 2/345
·  ·  ·  characterised by the arrangement of resistors or conductors  [5]
 B41J 2/35
·  ·  ·  providing current or voltage to the thermal head  [5]
 B41J 2/355
·  ·  ·  ·  Control circuits for heating-element selection  [5]
 B41J 2/36
·  ·  ·  ·  ·  Print density control  [5]
 B41J 2/365
·  ·  ·  ·  ·  ·  by compensation for variation in temperature  [5]
 B41J 2/37
·  ·  ·  ·  ·  ·  by compensation for variation in current  [5]
 B41J 2/375
·  ·  ·  Protection arrangements against overheating  [5]
 B41J 2/38
·  ·  Preheating, i.e. heating to a temperature insufficient to cause printing  [5]
 B41J 2/385
·  characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material (B41J 2/005 takes precedence; electrography, magnetography G03G)  [5]
 B41J 2/39
·  ·  using multi-stylus heads  [5]
 B41J 2/395
·  ·  ·  Structure of multi-stylus heads  [5]
 B41J 2/40
·  ·  ·  providing current or voltage to the multi-stylus head  [5]
 B41J 2/405
·  ·  ·  ·  Selection of the stylus or auxiliary electrode to be supplied (electronic switching circuits in general H03K 17/00)  [5]
 B41J 2/41
·  ·  for electrostatic printing (B41J 2/39 takes precedence)  [5]
 B41J 2/415
·  ·  ·  by passing charged particles through a hole or a slit  [5]
 B41J 2/42
·  ·  for heating selectively  [5]
 B41J 2/425
·  ·  for removing surface layer selectively from electro-sensitive material, e.g. matel coated paper  [5]
 B41J 2/43
·  ·  for magnetic printing  [5]
 B41J 2/435
·  characterised by selective application of radiation to a printing material or impression-transfer material (optical elements, systems, or apparatus G02B; modulation or deflection of light G02F; electrophotography G03G)  [5]
 B41J 2/44
·  ·  using single radiation source, e.g. lighting beams or shutter arrangements (B41J 2/475 takes precedence)  [5]
 B41J 2/445
·  ·  ·  using liquid crystals  [5]
 B41J 2/447
·  ·  using arrays of radiation sources (B41J 2/475 takes precedence)  [6]
 B41J 2/45
·  ·  ·  using light-emitting diode arrays  [5]
 B41J 2/455
·  ·  ·  using laser arrays  [5]
 B41J 2/46
·  ·  ·  characterised by using glass fibres  [5]
 B41J 2/465
·  ·  using masks, e.g. light-switching masks (photographic composing B41B)  [5]
 B41J 2/47
·  ·  using the combination of scanning and modulation of light  [5]
 B41J 2/475
·  ·  for heating selectively  [5]
 B41J 2/48
·  ·  ·  melting ink on a film or melting ink granules  [5]
 B41J 2/485
·  characterised by the process of building-up characters applicable to two or more kinds of printing or marking processes  [5]
 B41J 2/49
·  ·  by writing  [5]
 B41J 2/495
·  ·  by selective printing from a rotating helical member  [5]
 B41J 2/50
·  ·  by the selective combination of two or more non-identical printing elements  [5]
 B41J 2/505
·  ·  from an assembly of identical printing elements  [5]
 B41J 2/51
·  ·  ·  serial printer type  [5]
 B41J 2/515
·  ·  ·  line printer type  [5]
 B41J 2/52
·  Arrangement for printing a discrete number of tones, not covered by group B41J 2/205, e.g. applicable to two or more kinds of printing or marking process (B41J 2/525 takes precedence; for photomechanical production G03F 5/00)  [5]
 B41J 2/525
·  Arrangement for multi-colour printing, not covered by group B41J 2/21, e.g. applicable to two or more kinds of printing or marking process (for photomechanical production G03F 3/00)  [5]
P:0 B41J 3/00
Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed (cryptographic typewriters G09C 3/00)  [5]
 B41J 3/01
·  for special character, e.g. for Chinese characters or bar codes  [5]
 B41J 3/24
·  for perforating or stencil cutting using special types or dies
 B41J 3/26
·  for stenographic writing
 B41J 3/28
·  for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
 B41J 3/30
·  for printing with large type, e.g. on bulletins, tickets
 B41J 3/32
·  for printing in Braille or with keyboards specially adapted for use by blind or disabled persons
 B41J 3/34
·  for printing musical scores
 B41J 3/36
·  for portability
 B41J 3/37
·  ·  Foldable typewriters  [5]
 B41J 3/38
·  for embossing, e.g. for making matrices for stereotypes
 B41J 3/39
·  ·  hand-held (manually-controlled or manually-operable label dispensers having printing equipment B65C 11/02)  [5]
 B41J 3/407
·  for marking on special material (printing on special surfaces B41F 17/00)  [5]
 B41J 3/413
·  ·  for metal  [5]
 B41J 3/42
·  Two or more complete typewriters coupled for simultaneous operation
 B41J 3/44
·  Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions (printing mechanisms coupled to typographical composing machines B41B 27/41)
 B41J 3/46
·  ·  Printing mechanisms combined with apparatus providing a visual indication
 B41J 3/50
·  ·  Mechanisms producing characters by printing and also producing a record by other means (punching mechanisms G06K)  [5]
 B41J 3/51
·  ·  ·  the printed and recorded information being identical; using type elements with code-generating means (G06K 1/12 takes precedence)  [5]
 B41J 3/54
·  with two or more sets of type or printing elements (B41J 3/60 takes precedence)  [5]
 B41J 3/60
·  for printing on both faces of the printing material  [5]
 B41J 3/62
·  for printing on two or more separate sheets or strips of printing material (B41J 3/54 takes precedence)  [5]
 B41J 5/00 - 
B41J 29/00
Common details or accessories
P:60 B41J 5/00
Devices or arrangements for controlling character selection (methods or arrangements for sensing record carriers G06K 7/00)
 B41J 5/02
·  Character or syllable selected by setting an index
 B41J 5/04
·  ·  Single-character selection
 B41J 5/06
·  ·  Multiple-character selection
 B41J 5/08
·  Character or syllable selected by means of keys or keyboards of the typewriter type
 B41J 5/10
·  ·  Arrangements of keyboards
 B41J 5/12
·  ·  Construction of key buttons
 B41J 5/14
·  ·  Construction of key levers
 B41J 5/16
·  ·  Mounting or connecting key buttons on or to key levers
 B41J 5/18
·  ·  Locks
 B41J 5/20
·  ·  ·  for subsidiary keys, e.g. for shift keys
 B41J 5/22
·  ·  ·  Interlocks between keys, e.g. without detent arrangements
 B41J 5/24
·  ·  ·  ·  with detent arrangements
 B41J 5/26
·  ·  Regulating touch, key dip or stroke, or the like
 B41J 5/28
·  ·  Multiple-action keys, e.g. keys depressed by two or more amounts or movable in two or more directions to effect different functions or selections
 B41J 5/30
·  Character or syllable selection controlled by recorded information
 B41J 5/31
·  ·  characterised by form of recorded information
 B41J 5/32
·  ·  ·  by printed, embossed, or photographic records, e.g. cards, sheets
 B41J 5/34
·  ·  ·  ·  by strips or tapes
 B41J 5/36
·  ·  ·  by punched records, e.g. cards, sheets
 B41J 5/38
·  ·  ·  ·  by strips or tapes
 B41J 5/40
·  ·  ·  by magnetic or electrostatic records, e.g. cards, sheets
 B41J 5/42
·  ·  ·  ·  by strips or tapes
 B41J 5/44
·  ·  characterised by the kind of storage of recorded information
 B41J 5/46
·  ·  ·  the storage being on internal storages
 B41J 5/48
·  ·  ·  the storage being on external storages
 B41J 5/50
·  ·  ·  ·  on a single storage
 B41J 5/51
·  ·  ·  ·  on more than one separate storage, e.g. on additional correction strips or tapes  [3]
 B41J 5/52
·  ·  characterised by the provision of additional devices for producing a punched or like record, e.g. simultaneously
P:70 B41J 7/00
Type-selecting or type-actuating mechanisms (index setting B41J 5/02)
 B41J 7/02
·  Type-lever actuating mechanisms
 B41J 7/04
·  ·  Levers mounted on fixed pivots
 B41J 7/06
·  ·  ·  and connected to transmission members, e.g. toothed gearing
 B41J 7/08
·  ·  ·  ·  with pin-and-slot or like loose connections; Cam-slot members
 B41J 7/10
·  ·  ·  ·  Chain, belt, flexible-cable, or like members
 B41J 7/12
·  ·  ·  U-shaped type-lever on two pivots
 B41J 7/14
·  ·  ·  Single key-and-type lever
 B41J 7/16
·  ·  ·  Type-head pivoted to, or rotating on, lever
 B41J 7/18
·  ·  Levers having moving or variable fulcra to alter the mechanical advantage during the stroke
 B41J 7/20
·  ·  Levers having moving pivots fixed relative to the lever; Type-bars each pivoted on two links
 B41J 7/22
·  ·  Type-baskets; Bearings or hangers for type-levers
 B41J 7/24
·  ·  Construction of type-levers (U-shaped levers B41J 7/12)
 B41J 7/26
·  ·  Special means, e.g. repulsers, for ensuring return of type-levers
 B41J 7/28
·  ·  Key-lever and type-member returned independently to rest position
 B41J 7/30
·  ·  Preventing rebound or clash of levers or type-members
 B41J 7/32
·  Type-face selected by operation of sliding members
 B41J 7/34
·  Type-face selected by operation of rotary members
 B41J 7/36
·  Selecting arrangements applied to type-carriers rotating during impression
 B41J 7/38
·  ·  Type movable on carrier for selection
 B41J 7/40
·  ·  Type movable on carrier for impression
 B41J 7/42
·  ·  Timed impression, e.g. without impact
 B41J 7/44
·  ·  ·  with impact
 B41J 7/46
·  ·  Rolling contact during impression
 B41J 7/48
·  Type-carrier arrested in selected position by electromagnetic means
 B41J 7/50
·  Type-face selected by combinations of two movements of type-carrier
 B41J 7/52
·  ·  by combined rotary and sliding movement
 B41J 7/54
·  Selecting arrangements including combination, permutation, summation, or aggregation means
 B41J 7/56
·  ·  Summation devices for mechanical movements
 B41J 7/58
·  ·  ·  Wedges
 B41J 7/60
·  ·  ·  Levers
 B41J 7/62
·  ·  ·  Gearing
 B41J 7/64
·  ·  ·  Pulley-and-strand mechanism
 B41J 7/66
·  ·  Movable members, e.g. pins, displaceable according to a code
 B41J 7/68
·  ·  with means for selectively closing an electric circuit for type presentation
 B41J 7/90
·  Syllable, line, or like type selection
 B41J 7/92
·  Impact adjustment; Means to give uniformity of impression (B41J 9/46, B41J 9/48 take precedence)  [5]
 B41J 7/94
·  ·  Character-by-character adjustment
 B41J 7/96
·  Means for checking correctness of setting
P:80 B41J 9/00
Hammer-impression mechanisms
 B41J 9/02
·  Hammers; Arrangements thereof
 B41J 9/04
·  ·  of single hammers, e.g. travelling along printing line
 B41J 9/06
·  ·  ·  of stationary hammers, e.g. engaging a single type-carrier
 B41J 9/08
·  ·  ·  ·  engaging more than one type-carrier
 B41J 9/10
·  ·  of more than one hammer, e.g. one for each character position
 B41J 9/12
·  ·  ·  each operating in more than one character position
 B41J 9/127
·  ·  Mounting of hammers  [3]
 B41J 9/133
·  ·  Construction of hammer body or tip  [3]
 B41J 9/14
·  Means for selecting or suppressing individual hammers
 B41J 9/16
·  Means for cocking or resetting hammers
 B41J 9/18
·  ·  Cams
 B41J 9/20
·  ·  Springs
 B41J 9/22
·  ·  Fluid-pressure means
 B41J 9/24
·  ·  Electromagnetic means
 B41J 9/26
·  Means for operating hammers to effect impression
 B41J 9/28
·  ·  Cams
 B41J 9/30
·  ·  Springs
 B41J 9/32
·  ·  arranged to be clutched to snatch roll
 B41J 9/34
·  ·  Fluid-pressure means
 B41J 9/36
·  ·  in which mechanical power is applied under electromagnetic control
 B41J 9/38
·  ·  Electromagnetic means
 B41J 9/40
·  ·  including an electro-adhesive clutch
 B41J 9/42
·  with anti-rebound arrangements
 B41J 9/44
·  Control for hammer-impression mechanisms  [5]
 B41J 9/46
·  ·  for deciding or adjusting hammer-firing time  [5]
 B41J 9/48
·  ·  for deciding or adjusting hammer-drive energy  [5]
 B41J 9/50
·  ·  for compensating for the variations of printer drive conditions, e.g. for compensating for the variation of temperature or current supply  [5]
 B41J 9/52
·  ·  for checking the operation of print hammers  [5]
 B41J 9/54
·  ·  ·  for checking the breakage of print hammers  [5]
P:50 B41J 11/00
Devices or arrangements for supporting or handling copy material in sheet or web form (specially adapted for supporting or handling copy material in short lengths B41J 13/00, in continuous form B41J 15/00; holders for text to be copied B41J 29/00)
 B41J 11/02
·  Platens
 B41J 11/04
·  ·  Roller platens
 B41J 11/053
·  ·  ·  with sound-deadening devices (structure of surface B41J 11/057)  [3]
 B41J 11/057
·  ·  ·  Structure of the surface  [3]
 B41J 11/06
·  ·  Flat page-size platens
 B41J 11/08
·  ·  Bar or like line-size platens
 B41J 11/10
·  ·  Anvil or like character-size platens
 B41J 11/13
·  ·  Backings or blankets (for roller platens B41J 11/057)  [3]
 B41J 11/14
·  ·  Platen-shift mechanisms; Driving gear therefor
 B41J 11/16
·  ·  with balancing means
 B41J 11/18
·  Platen-impression arrangements
 B41J 11/20
·  Platen adjustments for varying the strength of impression, for a varying number of papers, for wear or for alignment
 B41J 11/22
·  Paper-carriage guides or races
 B41J 11/24
·  Detents, brakes, or couplings for feed rollers or platens
 B41J 11/26
·  Pin feeds
 B41J 11/27
·  ·  on or within the platen-rollers
 B41J 11/28
·  ·  Pin wheels
 B41J 11/30
·  ·  Pin traction elements other than wheels, e.g. pins on endless bands
 B41J 11/32
·  ·  Adjustment of pin wheels or traction elements, e.g. laterally
 B41J 11/34
·  ·  Guides coacting with pin feeds
 B41J 11/36
·  Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
 B41J 11/38
·  ·  Manually-operated feeding devices
 B41J 11/40
·  ·  specially adapted for printing musical scores
 B41J 11/42
·  ·  Controlling
 B41J 11/44
·  ·  ·  by devices, e.g. programme tape or contact wheel, moved in correspondence with movement of paper-feeding devices, e.g. platen rotation
 B41J 11/46
·  ·  ·  by marks or formations on the paper being fed
 B41J 11/48
·  Apparatus for condensed record, tally strip, or like work using two or more papers, or sets of papers
 B41J 11/50
·  ·  in which two or more papers or sets are separately fed in the same direction towards the printing position
 B41J 11/51
·  ·  ·  with different feed rates  [3]
 B41J 11/52
·  ·  in which one paper or set is moved transversely relative to another
 B41J 11/53
·  ·  ·  Devices for holding in place one paper or set during replacement of one or more of the auxiliary papers or sets
 B41J 11/54
·  ·  in which one paper or set is fed towards printing position from the front of the apparatus
 B41J 11/55
·  ·  ·  with means for adjusting a paper or set  [3]
 B41J 11/56
·  specially constructed to facilitate storage or transport of typewriter
 B41J 11/58
·  Supply holders for sheets or fan-folded webs, e.g. shelves, tables, scrolls, pile holders
 B41J 11/60
·  Erasing or correcting tables
 B41J 11/62
·  Shields or masks
 B41J 11/64
·  Applications of scales or indicators
 B41J 11/66
·  Applications of cutting devices
 B41J 11/68
·  ·  cutting parallel to the direction of paper feed
 B41J 11/70
·  ·  cutting perpendicular to the direction of paper feed
P:30 B41J 13/00
Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets
 B41J 13/02
·  Rollers (roller platens B41J 11/04)
 B41J 13/03
·  ·  driven, e.g. feed rollers separate from platen
 B41J 13/036
·  ·  co-operating with a roller platen  [3]
 B41J 13/042
·  ·  ·  Front and rear rollers or sets of front or rear rollers each mounted on a separate carrier  [3]
 B41J 13/048
·  ·  ·  Front and rear rollers both mounted on a common carrier  [3]
 B41J 13/054
·  ·  ·  ·  on the paper apron concentric with the roller platen  [3]
 B41J 13/076
·  ·  Construction of rollers; Bearings therefor
 B41J 13/08
·  Bands or like feeding devices
 B41J 13/10
·  Sheet holders, retainers, or stationary guides
 B41J 13/12
·  ·  specially adapted for cards, envelopes, or the like
 B41J 13/14
·  ·  Aprons or guides
 B41J 13/16
·  ·  ·  movable for insertion or release of sheets
 B41J 13/18
·  ·  ·  concentric with roller platen
 B41J 13/20
·  ·  Bails
 B41J 13/22
·  ·  Clamps or grippers
 B41J 13/24
·  ·  Strips for supporting or holding papers
 B41J 13/26
·  Registering devices
 B41J 13/28
·  ·  Front lays, stops, or gauges
 B41J 13/30
·  ·  Side lays or gauges
 B41J 13/32
·  ·  Means for positioning sheets in two directions under one control, e.g. for format control or orthogonal sheet positioning
P:40 B41J 15/00
Devices or arrangements specially adapted for supporting or handling copy material in continuous form, e.g. webs
 B41J 15/02
·  Web rolls or spindles; Attaching webs to cores or spindles
 B41J 15/04
·  Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
 B41J 15/06
·  ·  characterised by being applied to printers having stationary carriages
 B41J 15/08
·  ·  characterised by being applied to printers having transversely-moving carriages
 B41J 15/10
·  ·  ·  and mounted on the carriage
 B41J 15/12
·  ·  ·  and coupled to the carriage
 B41J 15/14
·  ·  ·  and detached from the carriage
 B41J 15/16
·  Means for tensioning or winding the web
 B41J 15/18
·  Multiple-web feeding apparatus
 B41J 15/20
·  ·  for webs superimposed during printing (machines for separating superposed webs B65H 41/00)
 B41J 15/22
·  ·  for feeding webs in separate paths during printing
 B41J 15/24
·  ·  with means for registering the webs with each other
P:90 B41J 17/00
Mechanisms for manipulating page-width impression-transfer material, e.g. carbon paper (in manifolding devices B41L; sheet material for duplicating or marking B41M 5/00)
 B41J 17/02
·  Feeding mechanisms
 B41J 17/04
·  ·  Feed dependent on the record-paper feed, e.g. both moved at the same time
 B41J 17/06
·  ·  ·  "Creep" feed, i.e. impression-transfer material fed slower than the record paper
 B41J 17/07
·  ·  ·  electromagnetically controlled
 B41J 17/08
·  ·  Feed independent of the record-paper feed
 B41J 17/10
·  ·  ·  electromagnetically controlled
 B41J 17/12
·  ·  Special adaptations for ensuring maximum life
 B41J 17/14
·  ·  Automatic arrangements for reversing the feed direction
 B41J 17/16
·  Holders in the machine for sheets of impression-transfer material
 B41J 17/18
·  ·  pivotable to and from the platen
 B41J 17/20
·  ·  slidable to and from the platen
 B41J 17/22
·  Supply arrangements for webs or impression-transfer material
 B41J 17/24
·  ·  Webs supplied from reels or spools attached to the machine (reels per se B65H 75/02)
 B41J 17/26
·  ·  Webs supplied from trays or like supports attached to the machines
 B41J 17/28
·  Arrangements of guides for the impression-transfer material
 B41J 17/30
·  Constructions of guides for the impression-transfer material
 B41J 17/32
·  Detachable carriers or holders for impression-transfer material mechanism
 B41J 17/34
·  Backings for impression-transfer material, e.g. sheets for reducing friction, shields for preventing imprint
 B41J 17/36
·  Alarms, indicators, or feed-disabling devices responsive to material breakage or exhaustion
 B41J 17/38
·  for dealing with the impression-transfer material after use
 B41J 17/40
·  ·  for retracting sheets for re-use
 B41J 17/42
·  ·  for webs
P:100 B41J 19/00
Character- or line-spacing mechanisms (key actions B41J 25/02)
 B41J 19/02
·  with retarding devices, e.g. brakes
 B41J 19/04
·  Sound-deadening or shock-absorbing devices or measures therein (B41J 19/38 takes precedence)
 B41J 19/06
·  ·  Resilient mounting of mechanism
 B41J 19/08
·  ·  Buffers, springs, or like carriage stops
 B41J 19/10
·  ·  Dash-pots
 B41J 19/12
·  ·  Gearing made of special material or specially constructed to reduce sound or shock
 B41J 19/14
·  with means for effecting line or character spacing in either direction
 B41J 19/16
·  Special spacing mechanisms for circular, spiral, or diagonal-printing apparatus
 B41J 19/18
·  Character-spacing or back-spacing mechanisms; Carriage-return or release devices therefor
 B41J 19/20
·  ·  Positive-feed character-spacing mechanisms (controlled by escapements B41J 19/52)
 B41J 19/22
·  ·  ·  acting by friction or gripping effect
 B41J 19/24
·  ·  ·  Pawl and ratchet
 B41J 19/26
·  ·  ·  ·  moving a paper or like carriage
 B41J 19/28
·  ·  ·  ·  moving a paper or like web or strip, e.g. over a stationary support
 B41J 19/30
·  ·  ·  Electromagnetically-operated mechanisms
 B41J 19/32
·  ·  ·  Differential or variable-spacing arrangements
 B41J 19/34
·  ·  Escapement-feed character-spacing mechanisms
 B41J 19/36
·  ·  ·  Driving mechanisms, e.g. springs stressed during carriage return
 B41J 19/38
·  ·  ·  ·  adapted for silent return
 B41J 19/40
·  ·  ·  Escapements having a single pawl or like detent
 B41J 19/42
·  ·  ·  Escapements having two pawls or like detents
 B41J 19/44
·  ·  ·  ·  coacting with two toothed members, e.g. racks or wheels
 B41J 19/46
·  ·  ·  ·  and mounted on a single rocker
 B41J 19/48
·  ·  ·  ·  and mounted on a single slider
 B41J 19/50
·  ·  ·  Electromagnetically-controlled escapements
 B41J 19/52
·  ·  ·  Escapements controlling positive-feed mechanism
 B41J 19/54
·  ·  ·  Construction of universal bars
 B41J 19/56
·  ·  ·  Escapements controlling web or strip feed
 B41J 19/58
·  ·  ·  Differential or variable-spacing arrangements
 B41J 19/60
·  ·  Auxiliary feed or adjustment devices
 B41J 19/62
·  ·  ·  for back-spacing
 B41J 19/64
·  ·  ·  for justifying
 B41J 19/66
·  ·  Carriage-release mechanisms
 B41J 19/68
·  ·  Carriage-return mechanisms, e.g. manually actuated
 B41J 19/70
·  ·  ·  power driven
 B41J 19/72
·  ·  ·  ·  with power stored during character spacing
 B41J 19/74
·  ·  with special means to maintain character-spacing or back-spacing elements in engagement during case-shift or like movement
 B41J 19/76
·  Line-spacing mechanisms (special line-feeds, e.g. long feeds, B41J 11/36)
 B41J 19/78
·  ·  Positive-feed mechanisms
 B41J 19/80
·  ·  ·  Pawl-and-ratchet mechanisms
 B41J 19/82
·  ·  ·  ·  moving a paper or like carriage
 B41J 19/84
·  ·  ·  ·  ·  in the form of a roller rotated for line spacing
 B41J 19/86
·  ·  ·  ·  ·  ·  the pawl being normally in engagement with the ratchet
 B41J 19/88
·  ·  ·  ·  moving a type carriage
 B41J 19/90
·  ·  ·  ·  moving a paper or like web or strip, e.g. over a stationary support, automatically in response to movements other than carriage return
 B41J 19/92
·  ·  ·  Electromagnetically-operated mechanisms
 B41J 19/94
·  ·  ·  automatically operated in response to carriage return
 B41J 19/96
·  ·  ·  Variable-spacing arrangements
 B41J 19/98
·  ·  Escapement-feed mechanisms
P:110 B41J 21/00
Column, tabular, or like printing arrangements; Means for centralising short lines (carriage-release mechanisms B41J 19/66; key actions B41J 25/18)
 B41J 21/02
·  Stops or stop-racks
 B41J 21/04
·  Mechanisms for setting or restoring tabulation stops
 B41J 21/06
·  with means for preventing rebound from stops
 B41J 21/08
·  Mechanisms for initiating, effecting, skipping, or stopping tabulation movement; Means for centralising short lines
 B41J 21/10
·  with central, counter, or equivalent stop projected into path of tabulation stops
 B41J 21/12
·  characterised by arrangements of electrical contacts
 B41J 21/14
·  characterised by denominational arrangements
 B41J 21/16
·  controlled by the sensing of marks or formations on the paper being typed, an undersheet, or the platen
 B41J 21/17
·  controlled by stored information  [5]
 B41J 21/18
·  characterised by applications of scales or indicators
P:120 B41J 23/00
Power drives for actions or mechanisms (B41J 9/00 take precedence)
 B41J 23/02
·  Mechanical power drives
 B41J 23/04
·  ·  with driven mechanism arranged to be clutched to continuously-operating power source
 B41J 23/06
·  ·  ·  by snatch rolls
 B41J 23/08
·  ·  ·  by one-revolution or part-revolution clutches
 B41J 23/10
·  ·  ·  and arrested in selected position
 B41J 23/12
·  ·  Mechanism driven by cams engaging rotating roller
 B41J 23/14
·  ·  Mechanism driven through an oscillating or reciprocating member
 B41J 23/16
·  ·  Mechanism driven by a spring tensioned by power means
 B41J 23/18
·  ·  Continuously-cycling drives
 B41J 23/20
·  Fluid-pressure power drives
 B41J 23/22
·  ·  for key or like type selection
 B41J 23/24
·  ·  for impression mechanisms
 B41J 23/26
·  ·  for platen or carriage movements, e.g. for line spacing, letter spacing, or carriage return
 B41J 23/28
·  ·  for type-carriage movements
 B41J 23/30
·  ·  for case shift
 B41J 23/32
·  Electromagnetic power drives, e.g. applied to key levers
 B41J 23/34
·  ·  applied to elements other than key levers
 B41J 23/36
·  ·  ·  and acting on type members
 B41J 23/38
·  ·  ·  and acting on aligning or case-shift mechanisms
P:130 B41J 25/00
Actions or mechanisms not otherwise provided for
 B41J 25/02
·  Key actions for specified purposes
 B41J 25/04
·  ·  Back-spacing
 B41J 25/06
·  ·  Carriage return
 B41J 25/08
·  ·  Case shift
 B41J 25/10
·  ·  Ink-ribbon adjustment
 B41J 25/12
·  ·  Character spacing
 B41J 25/14
·  ·  Line spacing
 B41J 25/16
·  ·  Line spacing and carriage return by a single key
 B41J 25/18
·  ·  Tabulating
 B41J 25/20
·  Auxiliary type mechanisms for printing distinguishing marks, e.g. for accenting, using dead or half-dead key arrangements, for printing marks in telegraph printers to indicate that machine is receiving
 B41J 25/22
·  for aligning characters for impression (in machines using index setting B41J 5/02)
 B41J 25/24
·  Case-shift mechanisms (B41J 11/14 takes precedence; key actions B41J 25/08); Fount-change arrangements
 B41J 25/304
·  Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface (type carriers sliding for impression B41J 1/36; type carriers swinging for impression B41J 1/40)  [5]
 B41J 25/308
·  ·  with print gap adjustment mechanisms  [5]
 B41J 25/312
·  ·  with print pressure adjustment mechanisms, e.g. pressure-on-the-paper mechanisms  [5]
 B41J 25/316
·  ·  with tilting motion mechanisms relative to paper surface  [5]
 B41J 25/32
·  Impression mechanisms in which a roller co-operates with stationary type-faces
 B41J 25/34
·  Bodily-changeable print heads or carriages (B41J 1/20, B41J 1/22, B41J 1/60 take precedence)  [5]
P:140 B41J 27/00
Inking apparatus
 B41J 27/02
·  with ink applied by pads or rotary discs
 B41J 27/04
·  ·  Pads or discs; Ink-supply arrangements therefor
 B41J 27/06
·  ·  Arrangements to ensure maximum life of pads or discs
 B41J 27/08
·  ·  Arrangements for multicolour work
 B41J 27/10
·  with ink applied by rollers; Ink-supply arrangements therefor
 B41J 27/12
·  ·  Rollers
 B41J 27/14
·  ·  Arrangements for multicolour work
 B41J 27/16
·  with ink deposited electrostatically or electromagnetically, e.g. powdered ink
 B41J 27/18
·  ·  with liquid ink deposited
 B41J 27/20
·  with ink supplied by capillary action, e.g. through porous type-members, through porous platens
 B41J 27/22
·  with inking discs or sectors
P:190 B41J 29/00
Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
 B41J 29/02
·  Framework
 B41J 29/04
·  Means for attaching machines to baseboards
 B41J 29/06
·  Special supports, platforms, or trolleys for supporting machines on tables
 B41J 29/08
·  Sound-deadening or shock-absorbing stands, supports, cases, or pads separate from machines
 B41J 29/10
·  Sound-deadening devices embodied in machines (B41J 19/04 takes precedence)
 B41J 29/12
·  Guards, shields or dust excluders  [5]
 B41J 29/13
·  ·  Cases or covers  [5]
 B41J 29/14
·  Attachments operated by the leg, e.g. the foot or knee
 B41J 29/15
·  Script supports connected to the typewriter or printer (tables, desks, office furniture, in general A47B)  [5]
 B41J 29/16
·  Auxiliary receptacles for articles, e.g. erasers, pencils
 B41J 29/17
·  Cleaning arrangements  [5]
 B41J 29/18
·  Mechanisms for rendering the print visible to the operator (ink-ribbon shifts B41J 35/20)  [5]
 B41J 29/19
·  ·  with reflectors or illuminating devices  [5]
 B41J 29/20
·  Arrangements of counting devices
 B41J 29/22
·  ·  Line counters
 B41J 29/24
·  ·  Word counters
 B41J 29/26
·  Devices, non-fluid media or methods for cancelling, correcting errors, underscoring or ruling  [4]
 B41J 29/28
·  ·  Writing or like instruments in holders or guides
 B41J 29/30
·  ·  Wheels
 B41J 29/32
·  ·  Type-members
 B41J 29/34
·  ·  ·  repeatedly actuated
 B41J 29/36
·  ·  for cancelling or correcting errors by overprinting (B41J 31/00 takes precedence)  [4]
 B41J 29/367
·  ·  ·  sheet media carrying a pigmented transferable correction layer  [4]
 B41J 29/373
·  ·  ·  sheet media bearing an adhesive layer effective to lift off wrongly typed characters  [4]
 B41J 29/377
·  Cooling or ventilating arrangements  [5]
 B41J 29/38
·  Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
 B41J 29/387
·  ·  Automatic cut-off devices  [5]
 B41J 29/393
·  ·  Devices for controlling or analysing the entire machine  [5]
 B41J 29/40
·  Means for printing fixed, i.e. unchanging, matter in addition to selectable matter
 B41J 29/42
·  Scales and indicators, e.g. for determining side margins
 B41J 29/44
·  ·  for determining top and bottom margins or indicating exhaust of paper
 B41J 29/46
·  Applications of alarms, e.g. responsive to approach of end of line (responsive to transfer-material breakage or exhaustion B41J 17/36, B41J 35/36)
 B41J 29/48
·  ·  responsive to breakage or exhaustion of paper or approach of bottom of paper
 B41J 29/50
·  Side-stop mechanisms
 B41J 29/52
·  Top-and-bottom stop mechanisms
 B41J 29/54
·  Locking devices applied to printing mechanisms
 B41J 29/56
·  ·  and manually actuated
 B41J 29/58
·  ·  and automatically actuated
 B41J 29/60
·  ·  ·  in response to failure of power supply
 B41J 29/62
·  ·  ·  by the absence of paper to lock hammer mechanism
 B41J 29/64
·  ·  ·  by a function of the printer to lock the keyboard
 B41J 29/66
·  ·  ·  ·  Locking devices actuated when platen reaches the end of a line
 B41J 29/68
·  ·  ·  by completion of a page or predetermined number of lines or exhaustion of paper to lock the keyboard
 B41J 29/70
·  ·  ·  Interlocks between any two carriage-moving mechanisms, e.g. character-space, back-space, tabulation, carriage-return, or carriage-release mechanisms
 B41J 31/00 - 
B41J 35/00
Ink ribbons; Ink-ribbon mechanisms
P:170 B41J 31/00
Ink ribbons (sheet material for duplicating or marking B41M 5/00; storing webs or tapes, e.g. on reels, B65H 75/00); Renovating or testing ink ribbons
 B41J 31/02
·  Ink ribbons characterised by the material from which they are woven
 B41J 31/04
·  ·  woven from synthetic material
 B41J 31/05
·  Ink ribbons having coatings other than impression-material coatings
 B41J 31/06
·  ·  the coatings being directly on the base material, i.e. below impression-transfer material; Ink ribbons having base material impregnated with material other than impression material
 B41J 31/08
·  ·  the coatings being superimposed on impression-transfer material
 B41J 31/09
·  Ink ribbons characterised by areas carrying media for obliteration or removal of typing errors  [4]
 B41J 31/10
·  Ink ribbons having arrangements to facilitate threading through a machine
 B41J 31/12
·  Ink ribbons having arrangements to prevent undesired contact between the impression-transfer material and machine parts or other articles
 B41J 31/14
·  Renovating or testing ink ribbons
 B41J 31/16
·  ·  while fitted in the machine using the ink ribbons
P:160 B41J 32/00
Ink-ribbon cartridges  [3]
 B41J 32/02
·  for endless ribbons  [3]
P:150 B41J 33/00
Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material (ink-ribbon cartridges B41J 32/00)
 B41J 33/02
·  Ribbon arrangements
 B41J 33/04
·  ·  mounted on moving carriages
 B41J 33/06
·  ·  Ribbons associated, but not moving, with typewriter platens, e.g. extending transversely to the length of the platen
 B41J 33/08
·  ·  ·  and extending parallel to the length of the platen
 B41J 33/10
·  ·  Arrangements of endless ribbons
 B41J 33/12
·  ·  Ribbons carried by coaxially-mounted spools
 B41J 33/14
·  Ribbon-feed devices or mechanisms
 B41J 33/16
·  ·  with drive applied to spool or spool spindle
 B41J 33/18
·  ·  ·  by ratchet mechanism (B41J 33/30 takes precedence)
 B41J 33/20
·  ·  ·  by friction
 B41J 33/22
·  ·  ·  by gears or pulleys
 B41J 33/24
·  ·  with drive applied directly to ribbon
 B41J 33/26
·  ·  ·  by rollers engaging the ribbon
 B41J 33/28
·  ·  ·  by mechanism pulling or gripping the ribbon
 B41J 33/30
·  ·  Escapement mechanisms
 B41J 33/32
·  ·  Electromagnetic devices
 B41J 33/34
·  ·  driven by motors independently of the machine as a whole
 B41J 33/36
·  ·  with means for adjusting feeding rate
 B41J 33/38
·  ·  Slow, e.g. "creep", feed mechanisms
 B41J 33/382
·  ·  ·  the ribbon being fed only during carriage return
 B41J 33/384
·  ·  ·  ·  and attached to the carriage during writing
 B41J 33/386
·  ·  ·  the ribbon being fed only by operation of the line-spacing mechanism
 B41J 33/388
·  ·  ·  the ribbon being fed only when type impression takes place
 B41J 33/40
·  ·  with arrangements for reversing the feed direction
 B41J 33/42
·  ·  ·  manually
 B41J 33/44
·  ·  ·  automatically
 B41J 33/46
·  ·  ·  ·  and characterised by its application to mechanism in which two spools are driven by pawl-and-rachet mechanism
 B41J 33/48
·  ·  ·  ·  ·  comprising two pawls and ratchets, one for each spool
 B41J 33/50
·  ·  ·  ·  ·  comprising a single pawl or integral double-tooth pawl selectively engageable with two ratchets, one for each spool
 B41J 33/51
·  ·  ·  ·  and characterised by the use of particular reversing control means
 B41J 33/512
·  ·  ·  ·  ·  using a pivoted reversing-feeler engaging the external periphery of the wound ribbon
 B41J 33/514
·  ·  ·  ·  ·  using a pivoted reversing-feeler engaging the interior of the wound ribbon
 B41J 33/516
·  ·  ·  ·  ·  using a reversing-feeler responsive to the tension of the ribbon
 B41J 33/518
·  ·  ·  ·  ·  the reversing-feeler engaging buttons or the like secured to the ribbon near its ends
 B41J 33/52
·  ·  Braking devices therefor
 B41J 33/54
·  ·  for ensuring maximum life of the ribbon (B41J 33/38 takes precedence; by adjustment of vibrator mechanisms B41J 35/14)
 B41J 33/56
·  ·  ·  Ribbon adjusted transversely
 B41J 33/58
·  ·  ·  Ribbon fed angularly
 B41J 33/60
·  ·  responsive to telegraph code or other extraneous signals
P:180 B41J 35/00
Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
 B41J 35/02
·  Frames or holders for unwound short lengths of ink ribbons
 B41J 35/03
·  ·  the holder being movable to inoperative position, e.g. by swinging upwardly
 B41J 35/04
·  Ink-ribbon guides
 B41J 35/06
·  ·  stationary
 B41J 35/08
·  ·  with tensioning arrangements
 B41J 35/10
·  ·  Vibrator mechanisms; Driving gear therefor
 B41J 35/12
·  ·  ·  adjustable, e.g. for case shift (key actions B41J 25/02)
 B41J 35/14
·  ·  ·  ·  for multicolour work; for ensuring maximum life of ink ribbon; for rendering ink ribbon inoperative
 B41J 35/16
·  Multicolour arrangements (B41J 35/10 takes precedence)
 B41J 35/18
·  ·  Colour change effected automatically
 B41J 35/20
·  Ink-ribbon shifts, e.g. for exposing print, for case-shift adjustment, for rendering ink ribbon inoperative
 B41J 35/22
·  Mechanisms permitting the selective use of a plurality of ink ribbons
 B41J 35/23
·  ·  with two or more ribbon guides
 B41J 35/24
·  Mechanisms specially adapted for feeding impression-transfer materials of foil form
 B41J 35/26
·  Ink-ribbon shields or backings
 B41J 35/28
·  Detachable carriers or holders for ink-ribbon mechanisms
 B41J 35/30
·  Manifolding or like arrangements
 B41J 35/32
·  ·  for producing a plurality of copies along the printing line by a single ink ribbon
 B41J 35/34
·  ·  using a plurality of separate ink ribbons, e.g. including one hectographic ink ribbon
 B41J 35/35
·  ·  using unwound short lengths of ink ribbons
 B41J 35/36
·  Alarms, indicators, or feed-disabling devices responsive to ink-ribbon breakage or exhaustion
 B41J 35/38
·  Feeding the ink ribbon to waste after use