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)
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 9/00)  [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 2/04
·  ·  ·  ·  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 2/07
·  ·  ·  characterised by jet control (B41J 2/205 takes precedence)  [5]
 B41J 2/075
·  ·  ·  ·  for many-valued 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 2/16
·  ·  ·  ·  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 2/205
·  ·  ·  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 2/23
·  ·  using print wires  [5]
 B41J 2/235
·  ·  ·  Print head assemblies  [5]
 B41J 2/25
·  ·  ·  ·  Print wires  [5]
 B41J 2/27
·  ·  ·  Actuators for print wires  [5]
 B41J 2/28
·  ·  ·  ·  of spring charge type, i.e. with mechanical power under electro-magnetic control  [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 2/385
·  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 2/41
·  ·  for electrostatic printing (B41J 2/39 takes precedence)  [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 2/475
·  ·  for heating selectively  [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 2/52
·  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 3/28
·  for printing downwardly on flat surfaces, e.g. of books, drawings, boxes
 B41J 3/36
·  for portability
 B41J 3/407
·  for marking on special material (printing on special surfaces B41F 17/00)  [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 27/00)
 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 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 5/30
·  Character or syllable selection controlled by recorded information
 B41J 5/31
·  ·  characterised by form of recorded information
 B41J 5/44
·  ·  characterised by the kind of storage of recorded information
 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 5/00)
P:80 B41J 9/00
Hammer-impression mechanisms
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 11/20
·  Platen adjustments for varying the strength of impression, for a varying number of papers, for wear or for alignment
 B41J 11/26
·  Pin feeds
 B41J 11/36
·  Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
 B41J 11/42
·  ·  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 11/58
·  Supply holders for sheets or fan-folded webs, e.g. shelves, tables, scrolls, pile holders
 B41J 11/66
·  Applications of cutting devices
 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 11/02)
 B41J 13/03
·  ·  driven, e.g. feed rollers separate from platen
 B41J 13/036
·  ·  co-operating with a 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 13/20
·  ·  Bails
 B41J 13/22
·  ·  Clamps or grippers
 B41J 13/24
·  ·  Strips for supporting or holding papers
 B41J 13/26
·  Registering devices
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 15/16
·  Means for tensioning or winding the web
 B41J 15/18
·  Multiple-web feeding apparatus
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 17/22
·  Supply arrangements for webs or impression-transfer material
 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 17/36
·  Alarms, indicators, or feed-disabling devices responsive to material breakage or exhaustion
P:100 B41J 19/00
Character- or line-spacing mechanisms (key actions B41J 25/00)
 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 19/34)
 B41J 19/34
·  ·  Escapement-feed character-spacing mechanisms
 B41J 19/60
·  ·  Auxiliary feed or adjustment devices
 B41J 19/66
·  ·  Carriage-release mechanisms
 B41J 19/68
·  ·  Carriage-return mechanisms, e.g. manually actuated
 B41J 19/74
·  ·  with special means to maintain character-spacing or back-spacing elements in engagement during case-shift or like movement
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 25/00)
 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)
P:130 B41J 25/00
Actions or mechanisms not otherwise provided for
 B41J 25/304
·  Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface (type carriers sliding for impression B41J 1/00; type carriers swinging for impression B41J 1/00)  [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]
P:140 B41J 27/00
Inking apparatus
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 19/00 takes precedence)
 B41J 29/12
·  Guards, shields or dust excluders  [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 35/00)  [5]
 B41J 29/20
·  Arrangements of counting devices
 B41J 29/26
·  Devices, non-fluid media or methods for cancelling, correcting errors, underscoring or ruling  [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 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 31/05
·  Ink ribbons having coatings other than impression-material coatings
 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
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 33/14
·  Ribbon-feed devices or mechanisms
 B41J 33/52
·  ·  Braking devices therefor
P:180 B41J 35/00
Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
 B41J 35/04
·  Ink-ribbon guides
 B41J 35/16
·  Multicolour arrangements (B41J 35/04 takes precedence)
 B41J 35/22
·  Mechanisms permitting the selective use of a plurality of ink ribbons
 B41J 35/28
·  Detachable carriers or holders for ink-ribbon mechanisms
 B41J 35/36
·  Alarms, indicators, or feed-disabling devices responsive to ink-ribbon breakage or exhaustion