US3841459A - Movable carriage assembly and ink ribbon control - Google Patents

Movable carriage assembly and ink ribbon control Download PDF

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Publication number
US3841459A
US3841459A US00245504A US24550472A US3841459A US 3841459 A US3841459 A US 3841459A US 00245504 A US00245504 A US 00245504A US 24550472 A US24550472 A US 24550472A US 3841459 A US3841459 A US 3841459A
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US
United States
Prior art keywords
pair
gear
spools
movement
gear members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00245504A
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English (en)
Inventor
E Pomplun
A Schwibbe
H Buschmann
E Mehlhart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wincor Nixdorf International GmbH
Nixdorf Computer AG
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Nixdorf Computer AG
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Application filed by Nixdorf Computer AG filed Critical Nixdorf Computer AG
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Publication of US3841459A publication Critical patent/US3841459A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/04—Ink-ribbon guides
    • B41J35/10—Vibrator mechanisms; Driving gear therefor
    • B41J35/12—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift
    • B41J35/14—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift for multicolour work; for ensuring maximum life of ink ribbon; for rendering ink-ribbon inoperative
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/02—Ribbon arrangements
    • B41J33/04—Ribbon arrangements mounted on moving carriages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/16—Ribbon-feed devices or mechanisms with drive applied to spool or spool spindle
    • B41J33/22—Ribbon-feed devices or mechanisms with drive applied to spool or spool spindle by gears or pulleys

Definitions

  • ABSTRACT A movable carriage assembly especially suitable for a mosaic printing head with means for moving the ink ribbon including a wind-up spool, a wind-off spool,
  • Mosaic printing heads which operate according to the principle of needle printing are well known.
  • a needle printer having a long needle path to thereby provide a large recording width and the possibility of utilizing both recording directions necessitates a specially designed ink ribbon arrangement which guarantees uniform, non-jerky ribbon movement without the ribbon sagging, with free-of-stress reversal of the direction in which the ink ribbon moves, and optimal utilization of the stored ink whereby maximum life of the ink ribbon can be achieved.
  • very fast color change e.g., from black to red, or fast removal of the ink ribbon from the writing area should be possible in order that the respective written symbols can be viewed, for example, when writing is interrupted.
  • An object of the present invention is to provide a carriage assembly which fulfills the above-indicated requirements and which is distinguished by the reliable method of its operation.
  • a carriage assembly of the abovenamed type is, according to the invention, characterized in that in both directions of motion of the carriage assembly, a gear unit contains elements rotating in the same direction and which move the ink ribbon spools in the same direction and that at least one boss of the ink ribbon spool is provided with an eccentric element, upon rotation of which an engaging lever causes a continuous up-and-down movement of the ink ribbon.
  • This continuous up-and-down movement of the ink ribbon provides uniform wear so that optimal utilization of the ink stored in the ribbon is possible. Furthermore, the elements rotate in the same direction independently of the direction in which the carriage assembly moves, hence, uniform and non-jerky transport of the ribbon spools is assured independently of a change of the direction in which the carriage assembly moves.
  • the engaging lever is adjustable to different initial positions which correspond to selective operational positions of the ink ribbon with different guide heights and even to a complete removal of the ink ribbon from the writing area. This makes it possible to bring multicolored ribbons to the standard guide height for a certain color and in addition, to cause complete clearing of the writing area so that during interruptions of the writing, the graphics produced can be also inspected where the carriage assembly has just been stopped.
  • At least one boss of the ink ribbon spool has an eccentric circumference and that on the ribbon spool boss, there is mounted the engaging lever designed as a bell crank lever and having a recess fitted to the eccentric circumference.
  • the carriage assembly is designed so that each ribbon spool boss is pro vided with a pinion which is coordinated with one of two intermeshed coupling gears which are supported between both pinions in a common plane, which are jointly disposed on a slide bar making possible coupling with one pinion at a given time, and which moreover are geared each time with a gear wheel connected with one pinion via a freewheel clutch.
  • the carriage assembly is so designed tha the freewheel clutches provide freewheeling in opposite directions of motions of the pinions which are coupled with the stationary element.
  • the total gear unit can be designed very simply and save space, for altogether, only four additional pivots are required for the additional wheels provided between the pinions driving the ink ribbon spools. Coupling between the ribbon spools for reversal of the direction of motion is not necessary. As will be shown further on, appropriate fixing of both possible positions of the slide bar results in its automatic sliding motion because the carriage assembly moves at freely chosen moments, thus making it possible that the direction of transport of the ink ribbon is reversed in a nonjerky manner.
  • the sliding motion is automatic because the coupling gear wheel functioning in the respective case is mounted on a sliding element, hence, when driven by a pinion, it is first of all so far moved before coupling that it can transfer its rotary motion to one of the pinions driving the ribbon spools, if necessary, via the other coupling gear wheel with which it is geared.
  • FIG. 1 shows a top plan view of a carriage assembly according to the invention
  • FIG. 2 shows a view of a part of the carriage assembly in the direction of view ll depicted in FIG. I;
  • FIG. 3 shows the carriage assembly depicted in FIG. 2 in the top plan view Ill;
  • FIG. 4 shows the mechanism for lifting and lowering of the ink ribbon.
  • FIGS. 1, 2 and 3 DESCRIPTION OF A PREFERRED EMBODIMENT
  • the carriage assembly in FIGS. 1, 2 and 3 is shown without the mechanism for lifting and lowering the ink ribbon for purposes of clarity and to facilitate understanding of the invention.
  • FIG. 1 depicts a plate bar 32 as part of a frame 3 which is movable with a printing head 6 (FIG. 4), for example, on slides 4 (only partially shown for clarity) by a slide tab 5 which is integral with or fastened to the frame 3.
  • the means for moving the carriage assembly along the slides 4 may comprise, for example, a pulley driven by an'electric motor 102 which is secured to the stationary frame of the mosaic printer 104 (shown in schematic only).
  • a pair of pulleys 106 are rotatably connected to the frame of the printer I04 and a length of wire, string, or the like, I03 is wound around the the three pulleys I06 and 160 and the free ends of the wire 108 are connected to outwardly extending tabs III) of the frame 3.
  • bosses 26 and 26a are eccentrically mounted to plate bar 32.
  • bosses 26 and 26a respectively support a driving pin 27 or 27a for rotating ink ribbon spools 112 (FIG. 4 only one shown)) which are not shown in FIG. I.
  • the bosses 26 and 26a are respectively fixed to rotate with the gear wheels 23 and 23a.
  • the gear wheels 28 and 28a can be coupled with gear wheels 29 and 29a respectively which pivot on pins 30 and 36a of a slide bar 31 and which are in gear with each other.
  • the gear wheels 28, 29 or the gear wheels 28a, 29a can be coupled with each other.
  • similar means with the corresponding parts 350 to 39a is situated on the opposite end of the assembly, except that there, the lug 35a lies onshoulder 39a and in this position does not exert a locking effect on slide bar 31.
  • Ink-ribbon brake levers 4t) and 400 having arms 43 and 43a, respectively, are swivel-mounted on the frame 3 pivoting on bearing bolts 41 and 41a respectively and exert such an effect on the locking levers 36 and 36a that when the ribbon brake levers and 46a are horizontally moving in the tensioning direction of stronger springs 42 and 42a, the arms 43 and 43a of the brake levers 40 and 40a hit legs 44 and 44a of locking levers 36 and 36a and swing them horizontally against the tension of the weaker springs 38 and 38a and thereby release the locking if it is in effect.
  • the brake levers 40 and 40a are preferably of one-piece construction with their respective amrs 43 and 43a.
  • a bar portion 120 or I20a extends between the brake lever 40 or 40a and its arm 43 or 43a and is integral therewith to fixedly connect the brake lever 40 or 400 to its respective arm 43 or 43a.
  • the position of the ribbon brake levers 4t) and 40a is determined as is known by the amount of ink ribbon 62 (FIG. 4) present on the respective ribbon spool I12 (FIG. 4).
  • the above-described unlocking of slide bar 31 starts when the ribbon spool lll2 (FIG. 4) being wound off contains only a small safety residue of ink ribbon 62 (FIG. 4).
  • the plate bar 32 furthermore contains stationary pins 45 on which the bosses 47 of gear wheels 46a and 46 pivot, as shown in cross section in FIG. 2.
  • a freewheel clutch connects pulleys 48 and 48a with the bosses 47 in such a manner that when pulleys 48 and 48a rotate in the direction indicated by arrows (FIG. 3), they carry along the respective gear wheel 46 and 46a connected thereto while rotation of pulleys 48 and 48a in each opposite direction of rotation results in slight braking between pulleys 48 and 48a and their respective gear wheels 46 and 46a.
  • the freewheel clutches consist, for example, of torsion springs 116 (FIG. 2) having opposite winding directions.
  • the driving element for the pulleys 48 and 48a is, for example, a flexible member 50 which is so wound around the pulleys 48 and 48a that upon lateral movement (FIG. I) of the plate bar 32, both pulleys 48 and 48a are rotated in the same direction.
  • the ends of the member 50 are fastened to a bedplate 75 on the stationary frame of the mosaic printer 104.
  • the pulleys 48 and 48a could alternately be designed as gear wheels which cooperate with a cog rack thus eliminating the need for flexible member 50.
  • FIG. 4 shows the mechanism for lifting the ink ribbon 62.
  • FIG. 4 depicts the boss 26 with the driving pin 27 which pivots relative to its bearing bolt 25 or axis of rotation with an concentric boring.
  • a bell crank lever 51 with its boring 52, having an arm 53 which is connected with a draw rod 54 of a stationary electromagnet 55 while another arm 56 is connected with an ink ribbon fork 57.
  • angular edge 58 of arm 56 hits arm 59 of ribbon fork 57 and thus swings the fork 57 in a vertical plane about its pivot 60 against the tension of a spring 6I whereby the ink ribbon 62 changes its height level.
  • the gear wheel 28 is not connected to gear wheel 29, hence, the ink ribbon 62 can be wound off the right rib bon spool H2 (FIG. 4) whereby the ribbon brake lever 40 effects slight braking in the known manner.
  • the ribbon fork 57 can be brought into such an elevated position that it clears the view on the writing area.
  • gear means operable when coupled to said spools to rotate said spools in a direction winding said ribbon onto a driven spool
  • gear means comprises:
  • a third pair of gear members rotatable in a direction which depends upon movement of said bar member and means translating movement between said third pair of gear members and said first pair of gear members in the same direction regardless of the direction of movement of said bar member.
  • said translating means comprises a free wheel clutch means connected to said third pair of gear members with one of said third pair of gear members being free wheeling in one direction and the other of said third pair of gear members being free wheeling in an opposite direction whereby one of said third pair of gear members drives said first pair of gear members at a time and in the same direction regardless of the direction of movement of said bar member.
  • sensing means comprises a lever pivotal, upon the ribbon on one of said spools reaching a predetermined circumference, to release said slide member for sliding movement in the opposite direction to engage said first pair of gear members with the gear member carried by the opposite spool.
US00245504A 1971-04-21 1972-04-19 Movable carriage assembly and ink ribbon control Expired - Lifetime US3841459A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2119414A DE2119414C3 (de) 1971-04-21 1971-04-21 Auf einem Typenträgerwagen angeordnete Farbbandtransport- und Umschalteinrichtung, insbesondere für Mosaikdruckwerke

Publications (1)

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US3841459A true US3841459A (en) 1974-10-15

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US00245504A Expired - Lifetime US3841459A (en) 1971-04-21 1972-04-19 Movable carriage assembly and ink ribbon control

Country Status (11)

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US (1) US3841459A (de)
JP (3) JPS5219128B1 (de)
AT (1) AT327592B (de)
CA (1) CA956904A (de)
CH (1) CH539895A (de)
DE (1) DE2119414C3 (de)
FR (1) FR2136584A5 (de)
GB (1) GB1383101A (de)
IT (1) IT953324B (de)
NL (1) NL150055B (de)
SE (1) SE380766B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990564A (en) * 1975-06-25 1976-11-09 Ncr Corporation Ribbon drive mechanism
US3993181A (en) * 1974-06-21 1976-11-23 U.S. Philips Corporation Matrix printer incorporating intermittent ink ribbon transport
US4044883A (en) * 1974-08-30 1977-08-30 Siemens Aktiengesellschaft Apparatus for advancing a ribbon in office typewriters, teleprinters, data printers and the like
US4232976A (en) * 1976-12-29 1980-11-11 Ing. C. Olivetti & C., S.P.A. Ribbon cartridge for printing machines and mechanism for feeding the ribbon
US4234260A (en) * 1979-01-24 1980-11-18 Citizen Watch Co., Ltd. Device for feeding ink ribbon
US4300847A (en) * 1979-05-14 1981-11-17 Qwint Systems, Inc. Teleprinter having single belt carriage and ribbon drive system
US4303345A (en) * 1979-06-20 1981-12-01 Sycor, Inc. Ink ribbon drive for data printers
DE3108528A1 (de) * 1981-03-06 1982-09-23 Nixdorf Computer Ag, 4790 Paderborn Mehrfarb-schreibvorrichtung an schreibmaschinen
US4408908A (en) * 1980-12-19 1983-10-11 International Business Machines Corporation Ribbon feed system for a matrix printer
US4411541A (en) * 1981-02-13 1983-10-25 Triumph-Adler A.G. Fur Buro-Und Informationstechnik Ribbon feed and elevating mechanism for typewriters or similar machines
FR2528929A1 (fr) * 1982-06-17 1983-12-23 Sagem Perfectionnements apportes a des dispositifs mecaniques d'entrainement selectif d'au moins deux arbres menes a partir d'un arbre menant unique, notamment pour le deplacement longitudinal d'un ruban encreur dans une machine imprimante
US4462707A (en) * 1978-07-18 1984-07-31 Ing. C. Olivetti & C., S.P.A. Printing and/or correcting device for printing machines
US4611937A (en) * 1983-01-19 1986-09-16 Silver Seiko Ltd. Ribbon feed mechanism for a printer
US4653939A (en) * 1983-12-16 1987-03-31 Alps Electric Co., Ltd. Thermal printer
US4758108A (en) * 1985-09-26 1988-07-19 Brother Kogyo Kabushiki Kaisha Printing apparatus with carriage drive utilized to feed print and erase ribbons and/or to feed the print ribbon and shift the erase ribbon

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5315811U (de) * 1976-07-21 1978-02-09
DE2915334A1 (de) * 1979-04-14 1980-10-16 Triumph Werke Nuernberg Ag Farbbandtransportvorrichtung fuer schreib- oder druckwerke
US4422786A (en) * 1980-11-03 1983-12-27 Texas Instruments Incorporated Bidirectional motion to unidirectional motion translator
GB2234710B (en) * 1989-06-13 1993-11-24 Brother Ind Ltd Printer

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US481750A (en) * 1892-08-30 Type writing machine
US584497A (en) * 1897-06-15 Type-writing-machine-ribbon mechanism
US818745A (en) * 1902-06-11 1906-04-24 Wyckoff Seamans & Benedict Ribbon-shifting mechanism for type-writers.
US941130A (en) * 1908-03-12 1909-11-23 Charles M Crook Ribbon-feed mechanism.
US1087990A (en) * 1910-01-10 1914-02-24 Remington Typewriter Co Type-writing machine.
US1303159A (en) * 1919-05-06 browning
US1800399A (en) * 1931-04-14 Ribbon-shifting mechanism
US1929448A (en) * 1931-10-23 1933-10-10 Coxhead Ralph C Corp Ribbon vibrating and ribbon shifting mechanism
US1949107A (en) * 1931-09-11 1934-02-27 Ross J Beatty Apparatus for holding and feeding typewriter ribbons
US3026987A (en) * 1958-11-27 1962-03-27 Gather Rudolf Ribbon feeding device for typewriting machine
US3139964A (en) * 1960-10-14 1964-07-07 Olympia Werke Ag Color changing arrangement for a combined calculator and typewriter
US3207284A (en) * 1961-09-12 1965-09-21 Imp Typewriter Co Ltd Ribbon feed device for typewriting and like machines
US3340989A (en) * 1964-08-11 1967-09-12 Sperry Rand Corp Ribbon reverse mechanism
US3584722A (en) * 1967-10-14 1971-06-15 Olivetti & Co Spa Carbon ribbon vibrating device for a type bar typewriter

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1303159A (en) * 1919-05-06 browning
US584497A (en) * 1897-06-15 Type-writing-machine-ribbon mechanism
US481750A (en) * 1892-08-30 Type writing machine
US1800399A (en) * 1931-04-14 Ribbon-shifting mechanism
US818745A (en) * 1902-06-11 1906-04-24 Wyckoff Seamans & Benedict Ribbon-shifting mechanism for type-writers.
US941130A (en) * 1908-03-12 1909-11-23 Charles M Crook Ribbon-feed mechanism.
US1087990A (en) * 1910-01-10 1914-02-24 Remington Typewriter Co Type-writing machine.
US1949107A (en) * 1931-09-11 1934-02-27 Ross J Beatty Apparatus for holding and feeding typewriter ribbons
US1929448A (en) * 1931-10-23 1933-10-10 Coxhead Ralph C Corp Ribbon vibrating and ribbon shifting mechanism
US3026987A (en) * 1958-11-27 1962-03-27 Gather Rudolf Ribbon feeding device for typewriting machine
US3139964A (en) * 1960-10-14 1964-07-07 Olympia Werke Ag Color changing arrangement for a combined calculator and typewriter
US3207284A (en) * 1961-09-12 1965-09-21 Imp Typewriter Co Ltd Ribbon feed device for typewriting and like machines
US3340989A (en) * 1964-08-11 1967-09-12 Sperry Rand Corp Ribbon reverse mechanism
US3584722A (en) * 1967-10-14 1971-06-15 Olivetti & Co Spa Carbon ribbon vibrating device for a type bar typewriter

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993181A (en) * 1974-06-21 1976-11-23 U.S. Philips Corporation Matrix printer incorporating intermittent ink ribbon transport
US4044883A (en) * 1974-08-30 1977-08-30 Siemens Aktiengesellschaft Apparatus for advancing a ribbon in office typewriters, teleprinters, data printers and the like
US3990564A (en) * 1975-06-25 1976-11-09 Ncr Corporation Ribbon drive mechanism
US4232976A (en) * 1976-12-29 1980-11-11 Ing. C. Olivetti & C., S.P.A. Ribbon cartridge for printing machines and mechanism for feeding the ribbon
US4462707A (en) * 1978-07-18 1984-07-31 Ing. C. Olivetti & C., S.P.A. Printing and/or correcting device for printing machines
US4234260A (en) * 1979-01-24 1980-11-18 Citizen Watch Co., Ltd. Device for feeding ink ribbon
US4300847A (en) * 1979-05-14 1981-11-17 Qwint Systems, Inc. Teleprinter having single belt carriage and ribbon drive system
US4303345A (en) * 1979-06-20 1981-12-01 Sycor, Inc. Ink ribbon drive for data printers
US4408908A (en) * 1980-12-19 1983-10-11 International Business Machines Corporation Ribbon feed system for a matrix printer
US4411541A (en) * 1981-02-13 1983-10-25 Triumph-Adler A.G. Fur Buro-Und Informationstechnik Ribbon feed and elevating mechanism for typewriters or similar machines
DE3108528A1 (de) * 1981-03-06 1982-09-23 Nixdorf Computer Ag, 4790 Paderborn Mehrfarb-schreibvorrichtung an schreibmaschinen
FR2528929A1 (fr) * 1982-06-17 1983-12-23 Sagem Perfectionnements apportes a des dispositifs mecaniques d'entrainement selectif d'au moins deux arbres menes a partir d'un arbre menant unique, notamment pour le deplacement longitudinal d'un ruban encreur dans une machine imprimante
EP0097566A1 (de) * 1982-06-17 1984-01-04 Societe D'applications Generales D'electricite Et De Mecanique S A G E M Mechanische Vorrichtung zum wahlweisen Antrieb mindestens zweier Wellen durch eine einzige Antriebswelle, vorzugsweise zum Farbbandtransport eines Druckers
US4611937A (en) * 1983-01-19 1986-09-16 Silver Seiko Ltd. Ribbon feed mechanism for a printer
US4653939A (en) * 1983-12-16 1987-03-31 Alps Electric Co., Ltd. Thermal printer
US4758108A (en) * 1985-09-26 1988-07-19 Brother Kogyo Kabushiki Kaisha Printing apparatus with carriage drive utilized to feed print and erase ribbons and/or to feed the print ribbon and shift the erase ribbon

Also Published As

Publication number Publication date
ATA349172A (de) 1975-04-15
IT953324B (it) 1973-08-10
CA956904A (en) 1974-10-29
SE380766B (sv) 1975-11-17
AT327592B (de) 1976-02-10
GB1383101A (en) 1975-02-05
CH539895A (de) 1973-07-31
DE2119414C3 (de) 1979-08-16
JPS5219128B1 (de) 1977-05-26
DE2119414A1 (de) 1972-12-07
FR2136584A5 (de) 1972-12-22
NL7205173A (de) 1972-10-24
DE2119414B2 (de) 1975-07-24
NL150055B (nl) 1976-07-15
JPS5046205U (de) 1975-05-09
JPS4926013A (de) 1974-03-08
JPS5334968Y2 (de) 1978-08-28

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