IPC 7 English version B41J 32/00-B41J 35/38

B41J03200-B41J03538

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 H04N) [4]

B 41 J

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)

32/

Ink-ribbon cartridges [3]

32/

for endless ribbons [3]

33/

Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material (ink-ribbon cartridges B41J 32/00)

33/

Ribbon arrangements

33/

mounted on moving carriages

33/

Ribbons associated, but not moving, with typewriter platens, e.g. extending transversely to the length of the platen

33/

and extending parallel to the length of the platen

33/

Arrangements of endless ribbons

33/

Ribbons carried by coaxially-mounted spools

33/

Ribbon-feed devices or mechanisms

33/

with drive applied to spool or spool spindle

33/

by ratchet mechanism (B41J 33/30 takes precedence)

33/

by friction

33/

by gears or pulleys

33/

with drive applied directly to ribbon

33/

by rollers engaging the ribbon

33/

by mechanism pulling or gripping the ribbon

33/

Escapement mechanisms

33/

Electromagnetic devices

33/

driven by motors independently of the machine as a whole

33/

with means for adjusting feeding rate

33/

Slow, e.g. "creep", feed mechanisms

33/

382

the ribbon being fed only during carriage return

33/

384

and attached to the carriage during writing

33/

386

the ribbon being fed only by operation of the line-spacing mechanism

33/

388

the ribbon being fed only when type impression takes place

33/

with arrangements for reversing the feed direction

33/

manually

33/

automatically

33/

and characterised by its application to mechanism in which two spools are driven by pawl-and-rachet mechanism

33/

comprising two pawls and ratchets, one for each spool

33/

comprising a single pawl or integral double-tooth pawl selectively engageable with two ratchets, one for each spool

33/

and characterised by the use of particular reversing control means

33/

512

using a pivoted reversing-feeler engaging the external periphery of the wound ribbon

33/

514

using a pivoted reversing-feeler engaging the interior of the wound ribbon

33/

516

using a reversing-feeler responsive to the tension of the ribbon

33/

518

the reversing-feeler engaging buttons or the like secured to the ribbon near its ends

33/

Braking devices therefor

33/

for ensuring maximum life of the ribbon (B41J 33/38 takes precedence; by adjustment of vibrator mechanisms B41J 35/14)

33/

Ribbon adjusted transversely

33/

Ribbon fed angularly

33/

responsive to telegraph code or other extraneous signals

35/

Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms

35/

Frames or holders for unwound short lengths of ink ribbons

35/

the holder being movable to inoperative position, e.g. by swinging upwardly

35/

Ink-ribbon guides

35/

stationary

35/

with tensioning arrangements

35/

Vibrator mechanisms; Driving gear therefor

35/

adjustable, e.g. for case shift (key actions B41J 25/02)

35/

for multicolour work; for ensuring maximum life of ink ribbon; for rendering ink ribbon inoperative

35/

Multicolour arrangements (B41J 35/10 takes precedence)

35/

Colour change effected automatically

35/

Ink-ribbon shifts, e.g. for exposing print, for case-shift adjustment, for rendering ink ribbon inoperative

35/

Mechanisms permitting the selective use of a plurality of ink ribbons

35/

with two or more ribbon guides

35/

Mechanisms specially adapted for feeding impression-transfer materials of foil form

35/

Ink-ribbon shields or backings

35/

Detachable carriers or holders for ink-ribbon mechanisms

35/

Manifolding or like arrangements

35/

for producing a plurality of copies along the printing line by a single ink ribbon

35/

using a plurality of separate ink ribbons, e.g. including one hectographic ink ribbon

35/

using unwound short lengths of ink ribbons

35/

Alarms, indicators, or feed-disabling devices responsive to ink-ribbon breakage or exhaustion

35/

Feeding the ink ribbon to waste after use

B41J 21/00 - B41J 31/16