EP0012878A2 - Farbbandantrieb, z.B. in einem Schnelldrucker - Google Patents

Farbbandantrieb, z.B. in einem Schnelldrucker Download PDF

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Publication number
EP0012878A2
EP0012878A2 EP79104865A EP79104865A EP0012878A2 EP 0012878 A2 EP0012878 A2 EP 0012878A2 EP 79104865 A EP79104865 A EP 79104865A EP 79104865 A EP79104865 A EP 79104865A EP 0012878 A2 EP0012878 A2 EP 0012878A2
Authority
EP
European Patent Office
Prior art keywords
belt
reel
ribbon
take
constant
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.)
Granted
Application number
EP79104865A
Other languages
English (en)
French (fr)
Other versions
EP0012878A3 (en
EP0012878B1 (de
Inventor
John Daniel Bemis
Jr. Willie Goff
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0012878A2 publication Critical patent/EP0012878A2/de
Publication of EP0012878A3 publication Critical patent/EP0012878A3/fr
Application granted granted Critical
Publication of EP0012878B1 publication Critical patent/EP0012878B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B41J33/24—Ribbon-feed devices or mechanisms with drive applied directly to ribbon

Definitions

  • the present invention relates to devices for driving reels of strip material, and more particularly, to a device for driving the ribbon in impact printers.
  • the tape should make a very open angle to the surface of the paper, that is, it is almost parallel to the paper.
  • the tension to be applied to the ribbon to remove it from the paper after a strike will be greater than that necessary in conventional printing ball machines in which the ribbon makes a less open angle in " look at the paper.
  • the physical arrangement of the various elements is such that the ribbon is unsupported over a greater length of the printing surface. This increases the requirements regarding the tension of the tape.
  • the present invention relates to a device for driving reels of very fragile and easily deformable tape or tape.
  • This device maintains said ribbon or said band under constant and uniform tension and can be used in impact printers operating at high speed to drive the ribbon of these printers.
  • the device according to the invention rotates a take-up reel and a feed reel, each reel being designed to carry a certain quantity of ribbon unwinding from the feed reel to the take-up reel, the reels rotating with a constant speed difference. Maintaining this constant speed difference regardless of the quantity of ribbon wound on the supply reel and on the take-up reel, ensures uniform and constant tension of the ribbon.
  • the device comprises a first relatively inextensible drive belt driving without sliding the periphery of the part of the ribbon wound on the take-up reel, and a second relatively inextensible driving belt not connected to the first belt, driving without sliding the periphery of the part of the ribbon wound on the supply reel.
  • the device further comprises means driving the first belt at a predetermined constant linear speed and means entrainé without sliding by the first belt and in turn driving without sliding the second belt at a constant linear speed slower than that of the first belt .
  • the portion of tape between the supply spool and the take-up spool is kept at a constant tension.
  • the existence of two separate belts for driving the reels makes it possible, if necessary, to adjust the tension of the ribbon by slightly turning one of the belts after having decoupled it from the other.
  • Figures 1 and 4 show a cartridge housing 10 containing a ribbon 11. A part 12 of the ribbon is wound on a supply reel and a part 13 is wound on a take-up reel.
  • the housing 10 is released from the device for ribbon dragging 14 according to the invention and these two assemblies are shown in the loading and unloading position of the ribbon cartridge which is a vertical position.
  • two pairs of cartridge positioning fingers 15, 15 ', 15 "and 15"' are respectively received and guided by two pairs of vertical rails 16 and 17, of the drive, each pair of rails 16 and 17 defining passages 18 and 19 for receiving and guiding the positioning fingers.
  • the positioning fingers 15 and 15 are brought through the passages 18 and 19 into holes 70 formed in flexible tongues 20, which causes the curl to lock in the operating position.
  • the tongues 20 are manually separated from the cartridge so that the fingers 15 and 15 "are released from their respective hole 70.
  • the loading and unloading takes place in the vertical position shown in Figure 1, after which the device is tilted around the axes. 21 ( Figure 2) to be brought with the ribbon into the horizontal operating position shown in Figures 2, 3 and 4.
  • the mechanisms allowing the rotation of the drive device and the tape from the vertical position to the horizontal position, will be described in detail below with reference to FIGS. 2 and 3.
  • FIG. 4 shows that the ribbon 11 is driven in front of a printing medium, for example, a sheet of paper 31, carried by a plate 32.
  • a conventional printing wheel 33 has tongues 34 which each have a different character to to print.
  • the print wheel can rotate between the ribbon and a hammer f: rappe 35.
  • the ribbon drive device comprises a wetness step by step 37 (see Figure 1) driving a pinion 38 rotating clockwise in Figure 4.
  • the pinion 38 drives a wheel 39 which, in turn, drives a pulley 40 attached to it.
  • the pulley 40 drives an inextensible belt 41 for driving the take-up reel 13.
  • This belt 41 is guided by pulleys 42, 43, 44, 45, 46 and 47.
  • the belt 41 is also guided by a pulley with a movable axis 48 which is connected to a tension spring 50 which will be described later and by a pulley 49 which is fixed to a drive pinion 51.
  • An inextensible belt 52 for driving the supply reel 12 is supported and guided by a series of guide pulleys 53 to 58 which correspond to the pulleys 42 to 47 associated with the drive belt of the take-up reel.
  • a guide pulley 59 with a movable axis performs a function identical to that provided by the pulley 48.
  • the pinion 51 drives a idler gear 60 which, in turn, drives a gear 61 of the same diameter as that of the gear 51.
  • a pulley 62 is fixed to the gear 61 and serves to drive the belt 52 of the feed reel.
  • the pulley 62, associated with the drive belt of the feed reel has a diameter slightly smaller than that of the pulley 49.
  • the drive belt 52 of the feed reel will be driven at a linear speed slightly lower than that of the drive belt 41 of the take-up reel. Since the belts 41 and 52 respectively drive the take-up reel 13 and the feed reel 14 by their periphery and without sliding, the part of the tape 11 leaving the feed reel 12 will be driven at a slightly lower constant linear speed to that of the part of the ribbon 11 winding on the receiving reel 13. This speed difference ensures the application of a constant tension to the ribbon. With this arrangement, the difference in speed remains constant and consequently, the slight tension applied to the ribbon also remains constant regardless of the length of the ribbon wound on the supply reel 12 and on the take-up reel 13.
  • the belts 41 and 52 are practically inextensible, the sum of the length of the part of the drive belt 41 in contact with the periphery of the ribbon wound on the take-up reel 13 and the length of the part of the entrainment belt 52 in contact with the periphery of the ribbon wound on the supply reel 12, remains practically constant regardless of variations in the quantity of the ribbon wound on each of these reels.
  • the spring 50 and its associated pulleys 48 and 59 prohibit any slack in the drive belts 41 and 52 which could be caused by modifications in the quantity of ribbon wound on the reels 13 and 12.
  • the pulleys 48 and 59 are mobile, that is to say that they do not have a fixed position and shift according to the modifications of the quantity of the ribbon wound on the reception and supply coils.
  • the length of the spring 50 remains constant, but its position moves from left to right as indicated by the arrows, to compensate for the changes in the length of the ribbon wound on the receiving and supply 12 and maintain a constant pressure of each of the belts on the reel with which it is associated.
  • the button 63 (FIG. 1) can be used to manually release the pulley 62 and its pinion 61 from the idler gear 60 so that the drive belt 52 is decoupled. of the belt 41.
  • the position of the belt 52 can then be modified to adjust the tension of the ribbon 11 while the drive belt 41 and the take-up reel 13 remain in a fixed position.
  • the button 63 and at the same time the pulley 62 and the pinion 61 can be returned to the operating position.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
EP79104865A 1979-01-02 1979-12-04 Farbbandantrieb, z.B. in einem Schnelldrucker Expired EP0012878B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/000,234 US4265552A (en) 1979-01-02 1979-01-02 Ribbon drive mechanism for high speed printer
US234 1979-01-02

Publications (3)

Publication Number Publication Date
EP0012878A2 true EP0012878A2 (de) 1980-07-09
EP0012878A3 EP0012878A3 (en) 1981-03-25
EP0012878B1 EP0012878B1 (de) 1983-09-21

Family

ID=21690546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104865A Expired EP0012878B1 (de) 1979-01-02 1979-12-04 Farbbandantrieb, z.B. in einem Schnelldrucker

Country Status (9)

Country Link
US (1) US4265552A (de)
EP (1) EP0012878B1 (de)
JP (1) JPS5593486A (de)
AU (1) AU526559B2 (de)
BR (1) BR7908621A (de)
CA (1) CA1124198A (de)
DE (1) DE2966210D1 (de)
ES (1) ES487054A1 (de)
IT (1) IT1165425B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359288A (en) * 1980-06-16 1982-11-16 International Business Machines Corporation Single pass ribbon cartridge for impact printers having means to prevent incorrect insertion
AT399474B (de) * 1987-12-07 1995-05-26 Triumph Adler Ag Trägergehäuse eines farbbandes für schreib- oder ähnliche maschinen

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5971742U (ja) * 1982-11-08 1984-05-16 ぺんてる株式会社 熱転写式プリンタのリボン送り装置
JPS59111883A (ja) * 1982-12-17 1984-06-28 Canon Inc インクリボンカセツト装着機構
JPS6192878A (ja) * 1984-10-12 1986-05-10 Ricoh Co Ltd リボンカセツトのリボン交換構造
JPH0428786Y2 (de) * 1985-05-20 1992-07-13
US4707155A (en) * 1985-12-24 1987-11-17 International Business Machines Corporation Re-inkable ribbon transport system
JPH0630449Y2 (ja) * 1986-09-08 1994-08-17 ブラザー工業株式会社 印字装置
JP2635049B2 (ja) * 1987-07-24 1997-07-30 株式会社日立製作所 熱転写記録装置
DE3741360A1 (de) * 1987-12-07 1989-06-15 Triumph Adler Ag Aufnahmevorrichtung fuer einen traeger eines farbbandes in schreib- oder aehnlichen maschinen
US5427658A (en) * 1993-10-21 1995-06-27 Electrosci Incorporated Electrolytic cell and method for producing a mixed oxidant gas
US7513401B1 (en) 2000-06-19 2009-04-07 Bally Gaming, Inc. Printer tear bar and presenter system
US6857804B2 (en) * 1999-10-16 2005-02-22 Sierra Design Group Vertically mounted modular printer system
US6443642B1 (en) * 1999-10-16 2002-09-03 Sierra Design Group Modular printing system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1046711A (en) * 1911-02-16 1912-12-10 F M Da Costa Type-writing-machine ribbon-operating mechanism.
FR698262A (fr) * 1930-07-01 1931-01-29 Dispositif pour l'enroulement et le déroulement d'un fil ou d'une bande d'une bobine sur une autre
US3084880A (en) * 1960-05-03 1963-04-09 North American Aviation Inc Slip clutch gear box
US3305186A (en) * 1963-04-18 1967-02-21 Kinclogic Corp Tape transport system using a drive belt contacting tape packs
US3383061A (en) * 1963-08-30 1968-05-14 Malcolm F. Thompson Tape transport means having variable speed supply and take-up reels
US3802644A (en) * 1971-10-01 1974-04-09 Motorola Inc Differential belt web transport
DE2349397C3 (de) * 1973-10-02 1981-01-29 Olympia Werke Ag, 2940 Wilhelmshaven Vorrichtung zum Erzeugen einer Bandspannung im wesentlichen konstanter Größe bei einem Farbband
US3974982A (en) * 1975-02-24 1976-08-17 Raymond Engineering Inc. Tape transport

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359288A (en) * 1980-06-16 1982-11-16 International Business Machines Corporation Single pass ribbon cartridge for impact printers having means to prevent incorrect insertion
AT399474B (de) * 1987-12-07 1995-05-26 Triumph Adler Ag Trägergehäuse eines farbbandes für schreib- oder ähnliche maschinen

Also Published As

Publication number Publication date
IT1165425B (it) 1987-04-22
AU5386479A (en) 1980-07-10
BR7908621A (pt) 1980-09-02
IT7928119A0 (it) 1979-12-18
US4265552A (en) 1981-05-05
JPS5593486A (en) 1980-07-15
CA1124198A (en) 1982-05-25
JPH0156917B2 (de) 1989-12-01
ES487054A1 (es) 1980-06-16
DE2966210D1 (en) 1983-10-27
EP0012878A3 (en) 1981-03-25
AU526559B2 (en) 1983-01-20
EP0012878B1 (de) 1983-09-21

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