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IPC 7
  B41J 3/00 - B41J 7/96  
B41J00900-B41J01332
  B41J 15/00 - B41J 19/98  

SECTION B – PERFORMING OPERATIONS; TRANSPORTING


B 41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS (reproduction or duplication of pictures or patterns by scanning and converting into electrical signals H04N) [4]


B 41 JTYPEWRITERS; 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)


9/

00Hammer-impression mechanisms

9/

02.Hammers; Arrangements thereof

9/

04..of single hammers, e.g. travelling along printing line

9/

06...of stationary hammers, e.g. engaging a single type-carrier

9/

08....engaging more than one type-carrier

9/

10..of more than one hammer, e.g. one for each character position

9/

12...each operating in more than one character position

9/

127..Mounting of hammers  [3]

9/

133..Construction of hammer body or tip  [3]

9/

14.Means for selecting or suppressing individual hammers

9/

16.Means for cocking or resetting hammers

9/

18..Cams

9/

20..Springs

9/

22..Fluid-pressure means

9/

24..Electromagnetic means

9/

26.Means for operating hammers to effect impression

9/

28..Cams

9/

30..Springs

9/

32..arranged to be clutched to snatch roll

9/

34..Fluid-pressure means

9/

36..in which mechanical power is applied under electromagnetic control

9/

38..Electromagnetic means

9/

40..including an electro-adhesive clutch

9/

42.with anti-rebound arrangements

9/

44.Control for hammer-impression mechanisms  [5]

9/

46..for deciding or adjusting hammer-firing time  [5]

9/

48..for deciding or adjusting hammer-drive energy  [5]

9/

50..for compensating for the variations of printer drive conditions, e.g. for compensating for the variation of temperature or current supply  [5]

9/

52..for checking the operation of print hammers  [5]

9/

54...for checking the breakage of print hammers  [5]


11/

00Devices 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)

11/

02.Platens

11/

04..Roller platens

11/

053...with sound-deadening devices (structure of surface B41J 11/057)  [3]

11/

057...Structure of the surface  [3]

11/

06..Flat page-size platens

11/

08..Bar or like line-size platens

11/

10..Anvil or like character-size platens

11/

13..Backings or blankets (for roller platens B41J 11/057)  [3]

11/

14..Platen-shift mechanisms; Driving gear therefor

11/

16..with balancing means

11/

18.Platen-impression arrangements

11/

20.Platen adjustments for varying the strength of impression, for a varying number of papers, for wear or for alignment

11/

22.Paper-carriage guides or races

11/

24.Detents, brakes, or couplings for feed rollers or platens

11/

26.Pin feeds

11/

27..on or within the platen-rollers

11/

28..Pin wheels

11/

30..Pin traction elements other than wheels, e.g. pins on endless bands

11/

32..Adjustment of pin wheels or traction elements, e.g. laterally

11/

34..Guides coacting with pin feeds

11/

36.Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller

11/

38..Manually-operated feeding devices

11/

40..specially adapted for printing musical scores

11/

42..Controlling

11/

44...by devices, e.g. programme tape or contact wheel, moved in correspondence with movement of paper-feeding devices, e.g. platen rotation

11/

46...by marks or formations on the paper being fed

11/

48.Apparatus for condensed record, tally strip, or like work using two or more papers, or sets of papers

11/

50..in which two or more papers or sets are separately fed in the same direction towards the printing position

11/

51...with different feed rates  [3]

11/

52..in which one paper or set is moved transversely relative to another

11/

53...Devices for holding in place one paper or set during replacement of one or more of the auxiliary papers or sets

11/

54..in which one paper or set is fed towards printing position from the front of the apparatus

11/

55...with means for adjusting a paper or set  [3]

11/

56.specially constructed to facilitate storage or transport of typewriter

11/

58.Supply holders for sheets or fan-folded webs, e.g. shelves, tables, scrolls, pile holders

11/

60.Erasing or correcting tables

11/

62.Shields or masks

11/

64.Applications of scales or indicators

11/

66.Applications of cutting devices

11/

68..cutting parallel to the direction of paper feed

11/

70..cutting perpendicular to the direction of paper feed


13/

00Devices or arrangements specially adapted for supporting or handling copy material in short lengths, e.g. sheets

13/

02.Rollers (roller platens B41J 11/04)

13/

03..driven, e.g. feed rollers separate from platen

13/

036..co-operating with a roller platen  [3]

13/

042...Front and rear rollers or sets of front or rear rollers each mounted on a separate carrier  [3]

13/

048...Front and rear rollers both mounted on a common carrier  [3]

13/

054....on the paper apron concentric with the roller platen  [3]

13/

076..Construction of rollers; Bearings therefor

13/

08.Bands or like feeding devices

13/

10.Sheet holders, retainers, or stationary guides

13/

12..specially adapted for cards, envelopes, or the like

13/

14..Aprons or guides

13/

16...movable for insertion or release of sheets

13/

18...concentric with roller platen

13/

20..Bails

13/

22..Clamps or grippers

13/

24..Strips for supporting or holding papers

13/

26.Registering devices

13/

28..Front lays, stops, or gauges

13/

30..Side lays or gauges

13/

32..Means for positioning sheets in two directions under one control, e.g. for format control or orthogonal sheet positioning

  B41J 3/00 - B41J 7/96    B41J 15/00 - B41J 19/98  
 

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