IPC 6 English version B41J !A-B41J 2/525

B41J-B41J002525

SECTION B– PERFORMING OPERATIONS; TRANSPORTING

B 41

PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS (reproduction or duplication of pictures or patterns by scanning and converting into electrical signals H 04 N) [4]

B 41 J

TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS (composing B 41 B; printing on special surfaces B 41 F; laundry marking B 41 K; erasers, rubbers or erasing devices B 43 L 19/00; fluid media for correction of typographical errors by coating C 09 D 10/00; recording the results of measuring G 01; recognition or presentation of data, marking record carriers in digital fashion, e.g. by punching, G 06 K; franking or ticket-printing and issuing apparatus G 07 B; electric keyboard switches, in general H 01 H 13/70, H 03 K 17/94; coding in connection with keyboards or like devices, in general H 03 M 11/00; receivers or transmitters for transmission of digital information H 04 L; transmission or reproduction of documents, or the like, e.g. facsimile transmission, H 04 N 1/00; printing mechanisms specially adapted for apparatus, e.g. cash registers, weighing machines, producing records of their own performance, see the relevant subclasses)

Notes

(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]

Kinds of typewriters or of selective printing mechanisms

Typewriters or selective printing mechanisms characterised by the mounting, arrangement, or disposition of the types or dies (non-selective embossing B 44 B 5/00)

with separate or detached types or dies

with types or dies carried upon levers or radial arms, e.g. manually operated (B 41 J 1/16 takes precedence)

on power-operated levers or arms

with types or dies carried on sliding bars or rods

on end surfaces thereof

on side surfaces thereof, e.g. fixed thereto

the types or dies being movable relative to the bars or rods (mounted on flexible bars or rods B 41 J 1/16)

with types or dies arranged in stationary or sliding cases or frames or upon flexible strips, plates, bars, or rods

with types or dies strung on wires or rods

with types or dies mounted on endless bands or the like

with types or dies mounted on carriers rotatable for selection

the plane of the type or die face being perpendicular to the axis of rotation (B 41 J 1/60 takes precedence)

Carriers moving for impression (B 41 J 1/27 takes precedence) [3]

Carriers moving during impression [3]

Carriers stationary for impression, e.g. with the types or dies not moving relative to the carriers

with the types or dies moving relative to the carriers or mounted on flexible carriers

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 (B 41 J 1/60 takes precedence)

Carriers rotating during impression

Carriers sliding for impression, e.g. manually operated

power operated

Carriers swinging for impression

about an axis parallel to the axis of rotation of the carrier

Carriers stationary for impression

Types or dies fixed on wheel, drum, cylinder, or like carriers

with a plurality of carriers, one for each character space

with one or more carriers travelling across copy material in letter-space direction

with copy material moving in the letter-space direction, and carrier mounting being fixed relative to the machine

Types or dies movable on wheel, drum, cylinder, or like carriers

Types or dies on shuttles or like loose carriers

Types or dies upon arcuate bars

with types or dies on spherical, truncated-spherical, or like surfaces

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 B 41 J 1/00; marking methods B 41 M 5/00; structure or manufacture of heads, e.g. inductive, for recording by magnetisation or demagnetisation of a record carrier G 11 B 5/127; heads for reproducing capacitive information G 11 B 9/07) [5]

Notes

(1)

This group covers devices reproducing only a discrete number of tones, whereas group H 04 N 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]

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 B 41 J 2/22) [5]

Ink jet [5]

015

characterised by the jet generation process (B 41 J 2/215 takes precedence) [5]

generating a continuous ink jet [5]

025

by vibration [5]

by pressure [5]

035

by electric or magnetic field [5]

generating single droplets or particles on demand [5]

045

by pressure, e.g. electromechanical transducers [5]

produced by the application of heat [5]

055

Devices for absorbing or preventing back-pressure [5]

by electric or magnetic field [5]

065

involving the preliminary making of ink protuberances [5]

characterised by jet control (B 41 J 2/205 takes precedence) [5]

075

for many-valued deflection [5]

charge-control type [5]

085

Charge means, e.g. electrodes [5]

Deflection means [5]

095

electric field-control type [5]

magnetic field-control type [5]

105

for binary-valued deflection [5]

for ink spray [5]

115

synchronising the droplet separation and charging time [5]

testing or correcting charge or deflection [5]

125

Sensors, e.g. deflection sensors [5]

for inclination of printed pattern [5]

135

Nozzles [5]

Structure thereof [5]

145

Arrangement thereof [5]

for serial printing [5]

155

for line printing [5]

Production of nozzles [5]

165

Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles [5]

characterised by ink handling [5]

175

Ink supply systems [5]

Ink recirculation systems [5]

185

Ink-collectors; Ink-catchers [5]

for removing air bubbles [5]

195

for monitoring ink quality [5]

for preventing or detecting contamination of compounds [5]

205

for printing a discrete number of tones (B 41 J 2/21 takes precedence) [5]

for multi-colour printing [5]

215

by passing a medium, e.g. consisting of an air or particle stream, through an ink mist [5]

characterised by selective application of impact or pressure on a printing material or impression- transfer material [5]

225

ballistic, e.g. using solid balls or pellets [5]

using print wires [5]

235

Print head assemblies [5]

serial printer type (B 41 J 2/25, B 41 J 2/265 take precedence) [5]

245

line printer type (B 41 J 2/25, B 41 J 2/265 take precedence) [5]

Print wires [5]

255

Arrangement of the print ends of the wires [5]

Connection of print wire and actuator [5]

265

Guides for print wires [5]

Actuators for print wires [5]

275

of clapper type (B 41 J 2/28 takes precedence) [5]

of spring charge type, i.e. with mechanical power under electro-magnetic control [5]

285

of plunger type [5]

of moving-coil type [5]

295

using piezo-electric elements [5]

Control circuits for actuators [5]

305

Ink supply apparatus (ink ribbons, ink-ribbon mechanisms B 41 J 31/00 to B 41 J 35/00) [5]

using a print element with projections on its surface impacted or impressed by hammers [5]

315

characterised by selective application of heat to a heat sensitive printing or impression-transfer material (B 41 J 2/385, B 41 J 2/435 take precedence) [5]

using thermal heads [5]

325

by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet [5]

from ink roller [5]

335

Structure of thermal heads [5]

comprising semiconductors [5]

345

characterised by the arrangement of resistors or conductors [5]

providing current or voltage to the thermal head [5]

355

Control circuits for heating-element selection [5]

Print density control [5]

365

by compensation for variation in temperature [5]

by compensation for variation in current [5]

375

Protection arrangements against overheating [5]

Preheating, i.e. heating to a temperature insufficient to cause printing [5]

385

characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material (B 41 J 2/005 takes precedence; electrography, magnetography G 03 G) [5]

using multi-stylus heads [5]

395

Structure of multi-stylus heads [5]

providing current or voltage to the multi-stylus head [5]

405

Selection of the stylus or auxiliary electrode to be supplied (electronic switching circuits in general H 03 K 17/00) [5]

for electrostatic printing (B 41 J 2/39 takes precedence) [5]

415

by passing charged particles through a hole or a slit [5]

for heating selectively [5]

425

for removing surface layer selectively from electro-sensitive material, e.g. matel coated paper [5]

for magnetic printing [5]

435

characterised by selective application of radiation to a printing material or impression-transfer material (optical elements, systems, or apparatus G 02 B; modulation or deflection of light G 02 F; electrophotography G 03 G) [5]

using single radiation source, e.g. lighting beams or shutter arrangements (B 41 J 2/475 takes precedence) [5]

445

using liquid crystals [5]

447

using arrays of radiation sources (B 41 J 2/475 takes precedence) [6]

using light-emitting diode arrays [5]

455

using laser arrays [5]

characterised by using glass fibres [5]

465

using masks, e.g. light-switching masks (photographic composing B 41 B) [5]

using the combination of scanning and modulation of light [5]

475

for heating selectively [5]

melting ink on a film or melting ink granules [5]

485

characterised by the process of building-up characters applicable to two or more kinds of printing or marking processes [5]

by writing [5]

495

by selective printing from a rotating helical member [5]

by the selective combination of two or more non-identical printing elements [5]

505

from an assembly of identical printing elements [5]

serial printer type [5]

515

line printer type [5]

Arrangement for printing a discrete number of tones, not covered by group B 41 J 2/205, e.g. applicable to two or more kinds of printing or marking process (B 41 J 2/525 takes precedence; for photomechanical production G 03 F 5/00) [5]

525

Arrangement for multi-colour printing, not covered by group B 41 J 2/21, e.g. applicable to two or more kinds of printing or marking process (for photomechanical production G 03 F 3/00) [5]

B41J 3/00 - B41J 7/96