EP0677396A1 - Bandspannungsverstellvorrichtung beim Kleben des Bandes an einem Aufzeichnungsträger - Google Patents

Bandspannungsverstellvorrichtung beim Kleben des Bandes an einem Aufzeichnungsträger Download PDF

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Publication number
EP0677396A1
EP0677396A1 EP95400609A EP95400609A EP0677396A1 EP 0677396 A1 EP0677396 A1 EP 0677396A1 EP 95400609 A EP95400609 A EP 95400609A EP 95400609 A EP95400609 A EP 95400609A EP 0677396 A1 EP0677396 A1 EP 0677396A1
Authority
EP
European Patent Office
Prior art keywords
ribbon
finger
modifying
take
per unit
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
EP95400609A
Other languages
English (en)
French (fr)
Other versions
EP0677396B1 (de
Inventor
Paul Morgavi
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.)
Gemplus SA
Original Assignee
Gemplus Card 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 Gemplus Card International SA filed Critical Gemplus Card International SA
Publication of EP0677396A1 publication Critical patent/EP0677396A1/de
Application granted granted Critical
Publication of EP0677396B1 publication Critical patent/EP0677396B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J33/34—Ribbon-feed devices or mechanisms driven by motors independently of the machine as a whole

Definitions

  • the present invention relates to a device for modifying the tension of a ribbon wound on a take-up reel, the ribbon being for example intended for thermal transfer on a dye support occurring sequentially on the ribbon.
  • plastic tape on which are sequentially deposited primary dyes, yellow, magenta, cyan, making it possible to obtain, by combination of the different wavelengths called subtractive, a palette of several million colors or tints.
  • the ribbon is presented wound on a storage reel, whose axis turns freely; another reel, called receiver, is used to wind the ribbon after use, and is provided with a drive motor means.
  • the winding speed expressed in turns of take-up reel, varies with each turn since the diameter of the circumference of the take-up drum increases by the thickness of a new layer.
  • the process of hot transfer of dyes from the ribbon to the card involves modulating the temperature of the thermal head according to the shade: dark colors require a higher temperature than light colors. This technical imperative tends to cause, for the printing of dark colors, a sticking of the ribbon on the card due to the softening of the plastic components, with as a consequence printing defects and an additional and parasitic entrainment of the card by the glued tape causing other printing defects.
  • the amount of plasticizer can vary from 5 to 20% depending on the manufacturer, causing a variation in the softening temperature from 50 to 70 degrees Celsius.
  • a flattening device was used, the function of which is to modify the angle of escape of the ribbon in order to create, during the course of a few millimeters separating the axes of the thermal print head and of the flattener, a zone of least effort on the ribbon, a sort of belly delaying the tearing of the latter during printing, allowing the dye to diffuse into the material of the card, the delay being also taken advantage of for cool card and ribbon.
  • the object of the invention is therefore to produce a device for modifying the tension of the ribbon which overcomes this drawback.
  • the device according to the invention uses a feeler which continuously feels the ribbon after the flattener and, depending on the position of the identified feeler, the device makes corrections to the reel winding speed receptor.
  • the invention relates to a device for modifying the tension of a ribbon which is wound on a take-up reel, said take-up reel being driven in rotation by a stepping motor which is controlled by a control system so as to obtain a linear speed of travel of the ribbon which is constant whatever the diameter of the ribbon on the take-up spool, said ribbon passing between a thermal print head and a card to be printed so as to deposit dyes carried by the ribbon on the card to be to print, characterized in that it comprises: a device for detecting the position of the strip relative to its normal running plane and a device for modifying the number of steps per unit time of the motor (16) when the strip deviates from its normal running plane.
  • the printer to which the invention applies comprises a thermal printing head 20, the lower part of which includes resistors heated by an electric current which is modulated as a function of the colors to be obtained on a printing card 18.
  • the dyes for these colors are carried by a ribbon 12 which passes under the thermal print head at the resistors.
  • the ribbon is stored on a storage reel 30 and is wound up, after passing under the thermal printing head 20 guided by rollers 32, 33, on a take-up reel 17 which is rotated by a motor 16.
  • the motor 16 is of the stepping type and its rotation is controlled by an electronic system 31 so as to obtain a linear speed of travel of the ribbon 12 under the thermal print head which remains constant whatever the diameter of the ribbon on the spool receptor 17.
  • Such an electronic system 31 has been described in patent application No. 94 02118 filed on February 24, 1994 by the Applicant and entitled "SYSTEM AND METHOD FOR DRIVING THE TAPE OF A TAPE ON A RECEIVING COIL".
  • Such an electronic system 31 includes an optical detection device 34 of the displacement of the ribbon 12 and an electronic circuit 35, of the microprocessor type, for calculating the speed of the ribbon 12 and deducing therefrom by calculation the number of steps per unit time of the motor 16 .
  • the print head 20 is associated with a flattening device 19 whose vertical position has been adjusted during assembly to modify the angle of escape of the ribbon under the thermal print head.
  • the device according to the invention comprises a probe 10 which is integral with the thermal printing head 20 and the flattener 19 and which is arranged after these two elements in the direction of scrolling the ribbon 12.
  • This probe 10 consists of a finger 13 which slides freely in a sheath 36 so that its lower end 11 remains in permanent contact with the face of the ribbon 12 which is on the side of the print head 20.
  • the upper end 37 of the finger 13 cooperates with a device 14 for detecting the vertical position of the finger 13 which comprises an optical cell 14A. During the vertical movement of the finger 13, the upper end 37 masks or unmasks these cells separated by a determined distance, which allows an electronic circuit 15, receiving the signals from the cells to calculate the length of the vertical movement of the finger 13. This displacement length information is used in a circuit or device electronics 38 to modify the number of steps per unit time of the motor 16 according to a determined function.
  • this information can be used directly by the microprocessor 35 which will therefore perform the function of the device 38.
  • the flattener 19 determines an angle of escape of the ribbon 12 detected by the finger 13 such that the cell 14A is masked and that it it is not necessary to make a correction to the tension of the tape 12.
  • the electronic circuit 15 calculates the length of the movement of the finger 13, which length is representative of the length of bonding of the tape 12 on the card 18.
  • This vertical displacement length of finger 13 information is transmitted to the modification device 38 (or to the microprocessor 35) of the control system of the stepping motor 16 of the take-up reel 17.
  • the device 38 or the microprocessor 35 modifies the number steps per unit of time to be increased the rotation of the motor 16 to tension the ribbon 12 and bring it back into contact with the flattener 19. This increase is progressive so as not to cause jolts.
  • the device 38 or the microprocessor 35 will gradually increase, according to a predetermined function, the number of steps per unit of time to bring it, for example, to + 33% compared to the value in normal operation.
  • the device 38 or the microprocessor 35 corrects in less the number of steps per unit time of the motor 16 while respecting a progressiveness.
  • the device is therefore able to permanently correct the speed of winding of the strip to compensate for the tension to be given to the strip to combat the phenomenon of sticking and gradually return to normal speed and tension.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
EP95400609A 1994-04-15 1995-03-20 Bandspannungsverstellvorrichtung beim Kleben des Bandes an einem Aufzeichnungsträger Expired - Lifetime EP0677396B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9404830A FR2718680B1 (fr) 1994-04-15 1994-04-15 Dispositif de modification de la tension d'un ruban enroulé sur une bobine réceptrice en cas de collage du ruban sur un support à imprimer.
FR9404830 1994-04-15

Publications (2)

Publication Number Publication Date
EP0677396A1 true EP0677396A1 (de) 1995-10-18
EP0677396B1 EP0677396B1 (de) 1998-09-02

Family

ID=9462388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400609A Expired - Lifetime EP0677396B1 (de) 1994-04-15 1995-03-20 Bandspannungsverstellvorrichtung beim Kleben des Bandes an einem Aufzeichnungsträger

Country Status (6)

Country Link
US (1) US5499878A (de)
EP (1) EP0677396B1 (de)
JP (1) JPH07276760A (de)
DE (1) DE69504397T2 (de)
ES (1) ES2121302T3 (de)
FR (1) FR2718680B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2732644B1 (fr) * 1995-04-04 1997-04-30 Gemplus Card Int Procede d'impression par transfert thermique de colorants, a compensation de pertes electriques
US5713533A (en) * 1996-09-09 1998-02-03 Mechanical Tool & Engineering Co. Stock feed apparatus
JP2006272883A (ja) * 2005-03-30 2006-10-12 Nissha Printing Co Ltd 転写成形装置及び転写成形方法
JP4448054B2 (ja) * 2005-05-09 2010-04-07 シチズンホールディングス株式会社 プリンタ
EP2623326A4 (de) * 2010-09-30 2018-03-21 Brother Kogyo Kabushiki Kaisha Drucker
US8842142B2 (en) * 2011-08-05 2014-09-23 Datamax-O'neil Corporation Print station system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001941A1 (en) * 1986-09-08 1988-03-24 Data Card Corporation Apparatus for printing on plastic cards
JPS63274578A (ja) * 1987-05-06 1988-11-11 Alps Electric Co Ltd 熱転写プリント方法
US4788558A (en) * 1987-02-06 1988-11-29 Intermec Corporation Method and apparatus for controlling tension in tape progressed along a feed path

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT363438B (de) * 1973-06-28 1981-08-10 Mitter & Co Siebdruckmaschine
JPS6137462A (ja) * 1984-07-31 1986-02-22 Silver Seiko Ltd 印字リボンカセツト
US4775086A (en) * 1985-08-27 1988-10-04 Hiroshi Kataoka Take-out/take-up tension control apparatus
JP2576492B2 (ja) * 1987-03-20 1997-01-29 ソニー株式会社 プリンタ装置のリボン送り機構
JPS63237979A (ja) * 1987-03-27 1988-10-04 Sony Corp インクリボンカ−トリツジ
GB2251216B (en) * 1990-12-31 1995-05-03 Alcatel Business Systems Ink ribbon feed
FR2716413B1 (fr) * 1994-02-24 1996-04-26 Gemplus Card Int Système et procédé de pilotage de l'enroulement d'un ruban sur une bobine réceptrice.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001941A1 (en) * 1986-09-08 1988-03-24 Data Card Corporation Apparatus for printing on plastic cards
US4788558A (en) * 1987-02-06 1988-11-29 Intermec Corporation Method and apparatus for controlling tension in tape progressed along a feed path
JPS63274578A (ja) * 1987-05-06 1988-11-11 Alps Electric Co Ltd 熱転写プリント方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
APPLEGATE ET AL.: "electrothermal ribbon path", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 5, October 1980 (1980-10-01), pages 2012 *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 76 (M - 800)<3424> 21 February 1989 (1989-02-21) *

Also Published As

Publication number Publication date
FR2718680A1 (fr) 1995-10-20
ES2121302T3 (es) 1998-11-16
US5499878A (en) 1996-03-19
DE69504397T2 (de) 1999-05-06
DE69504397D1 (de) 1998-10-08
FR2718680B1 (fr) 1996-07-05
JPH07276760A (ja) 1995-10-24
EP0677396B1 (de) 1998-09-02

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