EP0170621A1 - Imprimante thermique polychrome - Google Patents

Imprimante thermique polychrome Download PDF

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Publication number
EP0170621A1
EP0170621A1 EP85810338A EP85810338A EP0170621A1 EP 0170621 A1 EP0170621 A1 EP 0170621A1 EP 85810338 A EP85810338 A EP 85810338A EP 85810338 A EP85810338 A EP 85810338A EP 0170621 A1 EP0170621 A1 EP 0170621A1
Authority
EP
European Patent Office
Prior art keywords
carriage
ribbons
ribbon
ink
thermal
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.)
Withdrawn
Application number
EP85810338A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jorge Costa
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.)
Hermes Precisa International SA
Original Assignee
Hermes Precisa International SA
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 Hermes Precisa International SA filed Critical Hermes Precisa International SA
Publication of EP0170621A1 publication Critical patent/EP0170621A1/fr
Withdrawn legal-status Critical Current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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/16—Multicolour arrangements

Definitions

  • the present invention relates to a polychrome thermal printer comprising a chassis and a carriage movable along a print medium, the carriage comprising two parts, a first part carrying a thermal print head, a second part supporting several independent ink ribbons arranged opposite the thermal head at different levels, the carriage comprising a color selection mechanism making it possible to move the second part relative to the first part so as to have one or the other of the ink ribbons opposite the heating elements.
  • the printer according to the invention is characterized for this purpose in that said second part of the carriage consists of a support plate articulated to the first part by a pivot shaft and arranged so as to support in its middle part a cassette containing a black ink ribbon, supply rolls and take-up reels for colored ribbons being arranged laterally on both sides of this cassette on different levels of height, the support plate comprising ribbon guides located on both sides of the head printing and on which the ink ribbons are arranged vertically offset.
  • the thermal printer comprises a chassis 1 having side walls 1a and 1b, a cylinder 4 (FIG. 4) and a carriage 2 carrying a head 3 for thermal transfer printing.
  • the carriage 2 is composed of a lower part 5 and an upper part 6 hinged to the lower part 5 along a hinge axis 7 constituted by two screws 7a and 7b.
  • the lower part 5 is slidably mounted on a fixed transverse bar 8 by means of rollers 9, 10 and on a universal bar 11 housed in bearings 12 of the side walls la, 1b of the chassis.
  • the carriage 2 is driven by a motor 13 cooperating with a transmission belt 14 fixed by two rivets 16 to the base of the carriage 2.
  • This belt 14 is tensioned by a tension roller 15 mounted on the side wall lb.
  • the thermal print head 3 comprises a vertical row of heating elements 3a (FIG. 4) each connected to a control unit, not illustrated, allowing, thanks to a printing signal, to circulate an electric current in the heating elements in order to cause the thermal transfer of ink from an ink ribbon onto the paper to be printed at the places considered under the influence of temperature and pressure.
  • the thermal head 3 is carried by a support piece 21 pivotally mounted on the lower part 5 of the carriage 2 by two screws 22 (fig. 2 and 6).
  • An actuating lever 23 is integral with the support piece, and subjected to the action of a spring 24. This lever 23 biases the print head 3 in the direction of the cylinder 4.
  • a cam 25 pivotally mounted on the one of the side walls 5a of the carriage is integral with a toothed wheel 26 and makes it possible to spread the head 3 of the cylinder 4 against the action of the spring 24.
  • the rotation of the cam 25 is controlled by the universal bar 11 on which is slidingly mounted a toothed wheel 27 angularly integral with the bar 11 and meshing with the toothed wheel 26.
  • a motor, not illustrated, fixed to the chassis makes it possible to actuate the universal bar 11 and thus to control the positioning of the head thermal 3 against the cylinder 4, when a print is to be made, or to discard it otherwise.
  • the upper part 6 of the carriage is constituted by a support plate carrying four ink ribbons 30 to 33 (fig. 1).
  • the black inking ribbon 30 is contained in a cassette 44 in which the ribbon is unwound from an upper supply reel 42 superimposed on a lower take-up reel 43 (FIG. 7).
  • This cassette 34 is held on the part 6 by means of a leaf spring 29.
  • the three ribbons 31 to 33 corresponding to the colors yellow, cyane and magenta are unwound from supply coils 34 to 36 and wound on receiving coils 37 to 39. These coils are arranged on three levels of increasing height from the front to the 'back of the plate 6 (Fig. 4) so that the ribbons 30 to 33 are at four different heights on the ribbon guides 40 and 41, the black ribbon being located the highest.
  • the machine includes, for this purpose, a mechanism color selection 45 (fig.
  • the drive mechanism 50 of the ink ribbons 30 to 33 comprises a cord 51 stretched between the two side walls la, Ib of the chassis 1 by means of a spring 52.
  • This cord 51 is wound around a roller 53 mounted on the plate 6
  • the roller 53 cooperates by a freewheel device, not illustrated, with a coaxial toothed wheel 54 to drive a toothed belt 55 when the carriage 2 moves from left to right in the writing direction.
  • the roller 53 rotates in free wheel, when the carriage moves from right to left.
  • the toothed belt 55 in turn cooperates with four toothed wheels 56-59 intended to drive the receiving coils 37 to 39 and 43.
  • the hubs 60 of these coils fit onto drive shafts 61 (fig. 4) each connected to one of the toothed wheels 56-59 by a friction clutch 65.
  • the latter consists of two discs 66, 67 integral one of one of the toothed wheels 56-59 and the other of one of the shafts drive 61.
  • a spring 68 biases the two discs 66, 67 one against the other.
  • the tension of the toothed belt 55 is adjusted by means of a tension roller 69.
  • the hubs of the supply coils are mounted on shafts 70 (fig. 8), each of which comprises a coil spring 71, one end of which is secured to the shaft 70 and the other end of which bears against the plate 6.
  • This spring 71 provides a certain braking and restoring force so that the ink ribbons 30 to 33 are constantly stretched.
  • the braking force of the springs 71 is greater than the friction force imparted by the disc clutches 65.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Electronic Switches (AREA)
EP85810338A 1984-08-03 1985-07-23 Imprimante thermique polychrome Withdrawn EP0170621A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3751/84A CH657323A5 (fr) 1984-08-03 1984-08-03 Imprimante thermique polychrome.
CH3751/84 1984-08-03

Publications (1)

Publication Number Publication Date
EP0170621A1 true EP0170621A1 (fr) 1986-02-05

Family

ID=4262708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810338A Withdrawn EP0170621A1 (fr) 1984-08-03 1985-07-23 Imprimante thermique polychrome

Country Status (4)

Country Link
US (1) US4647232A (ja)
EP (1) EP0170621A1 (ja)
JP (1) JPS6141582A (ja)
CH (1) CH657323A5 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4717270A (en) * 1986-02-28 1988-01-05 Kabushiki Kaisha Toshiba Paper circulating assembly for field sequential multi-color printing apparatus
US5383733A (en) * 1992-07-24 1995-01-24 Summagraphics Corporation Ribbon cassette for a printer
US5267802A (en) * 1992-07-24 1993-12-07 Summagraphics Corporation Ribbon cassette storage and transfer apparatus for a printer
US5491504A (en) * 1993-07-13 1996-02-13 Textronix, Inc. Thermal transfer printer ink ribbon-changing carousel apparatus and method
US5718525A (en) * 1996-01-05 1998-02-17 Brady Usa, Inc. label printer and dispenser
TWI225836B (en) * 2002-02-20 2005-01-01 Sanyo Electric Co Medicine supply apparatus
CN100349751C (zh) * 2002-05-09 2007-11-21 西铁城控股株式会社 打印机
US7592211B2 (en) * 2006-01-17 2009-09-22 Cree, Inc. Methods of fabricating transistors including supported gate electrodes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346161A1 (fr) * 1976-04-01 1977-10-28 Zentronik Veb K Systeme de cassettes pour ruban de machine a ecrire ou a imprimer

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1030500A (en) * 1905-11-25 1912-06-25 Alexander T Brown Type-writing machine.
US933186A (en) * 1907-03-08 1909-09-07 Harvey A Moyer Ribbon mechanism for type-writing machines.
US891047A (en) * 1907-06-11 1908-06-16 Underwood Typewriter Co Type-writing machine.
US3926109A (en) * 1972-09-13 1975-12-16 Texmark Inc Printing ribbon advancing means
IT1160425B (it) * 1978-07-18 1987-03-11 Olivetti & Co Spa Dispositivo di scrittura e/o correzione per macchine scriventi
JPS5664884A (en) * 1979-11-02 1981-06-02 Sony Corp Color hard copying apparatus
JPS5669189A (en) * 1979-11-09 1981-06-10 Canon Inc Inked-ribbon feed mechanism
JPS57131586A (en) * 1981-02-10 1982-08-14 Oki Electric Ind Co Ltd Printer
DE3108528C2 (de) * 1981-03-06 1983-09-01 Nixdorf Computer Ag, 4790 Paderborn Vorrichtung für ein mechanisches, vorzugsweise elektromechanisches Druckwerk zur Einstellung von Farbband auf unterschiedliche Spuren
JPS58183279A (ja) * 1982-04-21 1983-10-26 Canon Inc 印字装置
US4469459A (en) * 1982-04-21 1984-09-04 Envision Technology, Inc. Color printer
JPS58215386A (ja) * 1982-06-08 1983-12-14 Fujitsu Ltd インクリボンカセツト
JPS59104984A (ja) * 1982-12-07 1984-06-18 Nec Corp コレクタブルリボン機構
US4564303A (en) * 1983-06-09 1986-01-14 Michael J. Rosenberg Nontiltable, straight line path ribbon cartridge shifting means for multicolor ribbon including MICR ink

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346161A1 (fr) * 1976-04-01 1977-10-28 Zentronik Veb K Systeme de cassettes pour ruban de machine a ecrire ou a imprimer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 19, no. 4, septembre 1976, pages 1407-1408, Armonk, US; D.P. DARWIN: "Ribbon drive" *

Also Published As

Publication number Publication date
JPS6141582A (ja) 1986-02-27
US4647232A (en) 1987-03-03
CH657323A5 (fr) 1986-08-29

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19860307

17Q First examination report despatched

Effective date: 19870428

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870908

RIN1 Information on inventor provided before grant (corrected)

Inventor name: COSTA, JORGE