EP1016535B1 - Imprimante par transfert thermique - Google Patents

Imprimante par transfert thermique Download PDF

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Publication number
EP1016535B1
EP1016535B1 EP99107934A EP99107934A EP1016535B1 EP 1016535 B1 EP1016535 B1 EP 1016535B1 EP 99107934 A EP99107934 A EP 99107934A EP 99107934 A EP99107934 A EP 99107934A EP 1016535 B1 EP1016535 B1 EP 1016535B1
Authority
EP
European Patent Office
Prior art keywords
thermal transfer
transfer printer
transfer ribbon
printing
wind
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
EP99107934A
Other languages
German (de)
English (en)
Other versions
EP1016535A3 (fr
EP1016535A2 (fr
Inventor
Dr.Norbert Miller
Dipl.Ing. Peter Höffges
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.)
Scheidt and Bachmann GmbH
Original Assignee
Scheidt and Bachmann GmbH
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 Scheidt and Bachmann GmbH filed Critical Scheidt and Bachmann GmbH
Priority to EP99107934A priority Critical patent/EP1016535B1/fr
Priority to US09/474,509 priority patent/US6384855B1/en
Publication of EP1016535A2 publication Critical patent/EP1016535A2/fr
Publication of EP1016535A3 publication Critical patent/EP1016535A3/fr
Application granted granted Critical
Publication of EP1016535B1 publication Critical patent/EP1016535B1/fr
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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/007—Conveyor belts or like feeding devices
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/325—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet

Definitions

  • the present invention relates to a thermal transfer printer, comprising a guide device for the medium to be printed and a printing unit comprising a printing unit and a transport unit for the thermal transfer ribbon.
  • the printing of a medium takes place in a thermal transfer printer by means of a thermal transfer ribbon, which is guided past the print head during the printing process in synchronism with the feed rate of the medium to be printed.
  • the thermal transfer ribbon consists of a carrier film, to which at least one dye is applied.
  • the printhead heats individual points of the thermal transfer ribbon guided past the printhead in accordance with the printed image to be applied to the printing medium, which causes melting and detachment of color particles from the carrier film and adherence of the detached color particles to the printing medium.
  • EP 0 816 108 A1 shows a thermal transfer printer with a movable print head and a counter-roller, between which the thermal transfer ribbon and the print medium are squeezed past the print head during printing operation.
  • the drive for the thermal transfer ribbon is formed by a drive roller, past which the thermal transfer ribbon and is pressed by means of a non-driven roller for the purpose of driving against its outer diameter.
  • the present invention has for its object to provide a thermal transfer printer in which the tape running speed of the thermal transfer ribbon and the speed of the print medium can be synchronized in a simple manner and also is less susceptible to interference.
  • a generic thermal transfer printer is proposed with the invention, wherein a directly acting on the thermal transfer ribbon drive unit is provided, which moves the thermal transfer ribbon with a matched to the feed rate of the medium to be printed tape speed on the printing unit, and wherein a roller-shaped Aufwickel stresses for winding the spent thermal transfer ribbon is provided, wherein as a drive unit, a motor and at least one drive roller are provided which rests directly on the circumference of the cylindrical winding body and this drives.
  • a thermal transfer printer in which the synchronisability of the tape running speed of the thermal transfer ribbon and the feed rate of the medium to be printed is considerably improved.
  • a thermal transfer printer has a transport mechanism for the thermal transfer ribbon consisting essentially of a drive unit, unwinding body, take-up reel and guide rollers. For printing a print medium unused thermal transfer ribbon is unwound from the unwrapping and wound after printing the print medium as a spent thermal transfer ribbon on the cylindrical winding body.
  • a drive unit for the transport of the thermal transfer ribbon a motor and at least one driven by the motor drive roller is provided, wherein the drive unit passes the thermal transfer ribbon with a matched to the feed rate of the medium to be printed tape speed at the printing unit.
  • the drive roller of the drive unit is located directly on the circumference of the cylindrical Aufwickel stresses and drives this regardless of the winding diameter constant peripheral speed, so that the thermal transfer ribbon is moved past the printing unit with always the same tape speed linear.
  • the unwrapping body is cylindrical.
  • both the take-up body and the unwrapping body are interchangeably arranged in the thermal transfer printer.
  • the roll-shaped Aufwickel Sciences is slidably disposed relative to the drive roller according to a further advantageous proposal of the invention, so that even with increasing winding diameter of the drive via the applied directly to the periphery of the take-up drive roller remains ensured, for which the Aufwickel Sciences is interchangeably guided in Langlöchem.
  • the drive roller on a heating element which is heated when winding the thermal transfer ribbon on the cylindrical winding body.
  • the heating of the heating element has the consequence that the guided past in the region of the heating element on the drive roller thermal transfer ribbon is briefly heated before winding on the cylindrical Aufwickel Sciences, whereby a bonding of the individual layers of the wound thermal transfer ribbon is achieved.
  • the so glued together layers of the wound thermal transfer ribbon can no longer slip and move relative to each other, so that advantageously a tight winding of the thermal transfer ribbon is achieved on the roll-shaped Aufwickelève.
  • a resistor preferably a PTC resistor, is used as the heating element.
  • the heating element is rod-shaped and protrudes into a circumferential groove of the drive roller.
  • a further guide roller in the form of a preferably conical centering roller is provided for guiding the thermal transfer ribbon, which brings the thermal transfer ribbon centrally to the take-up.
  • the centering roller is advantageously guided in a groove, which allows the centering roller to move upwards into a detent position, whereby an improved insertion of the thermal transfer ribbon is made possible.
  • the roller-shaped winding body includes a retaining mechanism and a roller freewheel.
  • the retention mechanism guarantees on the one hand a defined Abwickelwiderstand and on the other a small photospulweg. Both measures advantageously prevent a thermal transfer ribbon break and ensure permanent thermal transfer ribbon tightening.
  • the roller freewheel advantageously allows the manual rewinding of the thermal transfer ribbon.
  • the guide means for the printing medium is arranged opposite to the printing unit while leaving a distance defining a processing space, wherein the guide means comprises a transport unit and an adjusting unit for changing the distance between guide means and printing unit.
  • Serving the supply of the printing medium guide device advantageously allows merging of printing unit and printing medium, wherein not the printing unit moves in the direction of the fixed in its position printing medium, but instead the printing medium by means of the guide device in the direction of the printing unit and so on this purpose the printing is introduced.
  • the transport unit consists of a conveyor belt and a drive, wherein for guiding the conveyor belt at least two guide rollers are provided, which are arranged in a plane extending substantially parallel to the printing unit.
  • the conveyor belt is designed as an endless loop and is driven by the deflection rollers by means of a stepper motor.
  • the conveyor belt passes a printing medium introduced into the thermal transfer printer past the printing unit in a plane substantially parallel to the printing unit, the distance between the printing medium conveyed by the conveyor belt and the printing unit being adjustable.
  • the guide device comprises an adjustment unit, which is formed by a drive and a motion transmission component, wherein at least a part of the Movement transmission component is disposed within the endless loop formed by the conveyor belt and is movable relative thereto.
  • the motion transfer component is disposed leaving a processing range defining distance from the printing unit, and by moving the movement transfer component in a direction substantially perpendicular to the printing unit, the distance between the printing medium loaded in the thermal transfer printer and the printing unit can be increased and decreased respectively ,
  • the printing medium After a supply of a printing medium in the processing area between the printing unit and guide means, the printing medium is fixed in its position and brought to the pressure unit containing the printing unit, for which the motion transfer component moves in the direction of the printing unit.
  • the thermal transfer printer according to the invention thus makes it possible, regardless of the material thickness of the supplied printing medium, to combine the printing unit and the printing medium for the purpose of printing.
  • the motion transmitting component and the printing unit are arranged opposite each other, resulting in a straightforward feeding movement of the motion transmitting component. Thus, even when feeding a wide variety of print media, no additional adjustment of the motion transmission component is required.
  • both the linear tape speed of the thermal transfer belt guided past the printing unit and the linear feed rate of the transport belt conveying the printing medium can be set.
  • a control unit is provided which synchronizes the tape speed of the thermal transfer ribbon and the feed rate of the conveyor belt.
  • a drive unit acting directly on the thermal transfer ribbon which advantageously passes the thermal transfer ribbon at a linearly constant strip speed at the printing unit.
  • a motor and at least one drive roller is provided in an advantageous manner as a drive unit, wherein the drive roller directly on the circumference of the cylindrical Aufwickel stressess is present and drives this.
  • the tape speed of the thermal transfer ribbon is adjustable.
  • serving the supply of the printing medium guide means of the thermal transfer printer consists advantageously of a transport and an adjustment, wherein transport and adjustment are coupled together so that an additional synchronization of transport and adjustment for the supply of the pressure medium to the printing unit is not required is.
  • the guide device and the printing unit are arranged opposite to each other leaving a processing range defining distance, so that a printing medium contained in the thermal transfer printer spaced from the printing unit-containing printing unit spaced in a plane extending substantially parallel to the printing unit on the printing unit by means of a conveyor belt is passed.
  • the drive of the conveyor belt is effected by a stepping motor, wherein the pressure medium conveyed by the conveyor belt is supplied to the printing unit at a linearly constant feed rate.
  • the feed rate of the conveyed by the conveyor pressure medium is adjustable. Due to the fact that on the one hand, both the tape running speed of the thermal transfer ribbon and the feed rate of the print medium are linearly constant and that on the other both the tape and the feed rate are adjustable, the thermal transfer ribbon is passed synchronously to the printing medium on the printing unit.
  • the motion transfer component For the printing of a printing medium moves the motion transfer component in the direction of the printing unit-containing printing unit and presses the print medium to this zoom. During such a Heranincis the printing medium is transported from the conveyor belt continuously, so that a continuous printing can be done. Once the printing operation is completed, the motion transfer component moves back and the print medium is released from the printing unit.
  • the guide means allows a pressure medium spaced from the printing unit pass by without the motion transfer component bringing the print medium to the printing unit.
  • the thermal transfer printer according to the invention thus ensures on the one hand the synchronous Vorbeid the thermal transfer ribbon and the printing medium on the printing unit and on the other the synchronization of transport unit and adjustment without elaborate and complicated control and control units would be required, so that the thermal transfer printer according to the invention little susceptible to interference and easy to maintain.
  • a guide centering the thermal transfer ribbon is also moved downwards by a positive connection with the motion transfer component and releases an opening for exchanging the thermal transfer ribbon.
  • Fig. 1 shows a partially sectioned front view of a printing unit 1 and a leaving a processing area defining distance oppositely arranged guide means 2.
  • the printing unit 3 containing printing unit 1 is arranged opposite the existing of pressure roller 17, pressure fork 18 and drive motion transmission component and with respect to its location fixed in place.
  • the printing unit 3, a printing medium not shown in this figure in a substantially parallel to the printing unit 1 extending direction of movement 27 is supplied by means of an endless loop forming conveyor belt 11 and guided into the processing area between the printing unit 3 and motion transfer component.
  • the motion transmission component is in its basic position, so that a supplied printing medium passes the printing unit 3, without which it is printed.
  • the printing unit 3 includes the printing unit 1 consisting essentially of drive unit Abwickel Sciences 6, 5 Aufwickel Sciences and guide rollers 10 transport mechanism for the thermal transfer ribbon 4.
  • the thermal transfer ribbon 4 is unwound from the unwrapping 6, passed over the guide rollers 10 on the printing unit 3 and wound up as consumed thermal transfer ribbon on the Aufwickel Sciences 5.
  • a drive roller 7 and a stepping motor 8 is provided.
  • a further guide roller in the form of a preferably conical centering roller 30 is arranged in the winding direction of the thermal transfer ribbon 4 in front of the winding body 5, which brings the spent thermal transfer ribbon 4 to be wound onto the take-up body 5 centrally to the take-up body 5.
  • the centering roller 30 is guided in a groove 31 and, in order to accomplish an improved insertion of a thermal transfer ribbon 4, can be moved upward into a latching position. To move the centering roller 30 in the locking position, it is guided in the groove 31 upwards and arranged in a recess formed at the upper end of the groove 31 bulge. After replacing the thermal transfer ribbon 4, the centering roller 30 is moved out of the bulge back out into its normal position.
  • the directly mounted on the stub shaft of the stepping motor 8 and formed as a rubberized roller drive roller 7 is disposed below the cylindrical winding body 5 and is located directly on the periphery thereof. Regardless of the winding diameter of the Aufwickel stresses 5 this is driven at a constant constant peripheral speed on the outer circumference on the drive roller 7, so that the thermal transfer ribbon 4 is guided past the printing unit 3 with a constant linear tape speed. Continuous winding of the consumed after a printing thermal transfer ribbon 4th on the take-up body 5 causes the winding diameter of the Aufwickel stressess 5 increases steadily with increasing pressure duration.
  • the unwrapping body 6 includes a retaining mechanism which guarantees a defined unwinding resistance, so that a permanent tightening of the thermal transfer ribbon 4 is ensured.
  • the printing unit 1 further has a rod-shaped heating element 32 which projects into the formed in the drive roller 7 groove 33 and is linearly in contact with the wound up thermal transfer ribbon 4. This is shown most clearly in FIG. 2.
  • the heating element which is preferably in the form of a PTC resistor, is heated to the cylindrical winding body 5 during winding of the thermal transfer ribbon.
  • the thermal transfer ribbon 4 guided past the drive roller 7 in the region of the heating element is likewise briefly heated, as a result of which the different layers of the thermal transfer ribbon wound on the take-up body 5 stick together. This ensures that the different layers of the wound thermal transfer ribbon can not slip and move relative to each other, so that a tight rolling of the thermal transfer ribbon 4 is achieved.
  • the guide device 2 comprises the motion transmission component and the transport unit for the medium to be printed.
  • the motion transmission component consists in turn essentially of the pressure roller 17, which with this force-fitting Anspreßgabel 18 and a drive unit.
  • the printing medium not shown in this figure is guided in accordance with the direction of movement 27 by means of the conveyor belt 11 in a plane substantially parallel to the printing unit 1 level and in the Processing area between the printing unit 1 and guide 2 introduced.
  • the conveyor belt 11 is guided by means of two guide rollers 12 and is formed as an endless loop, wherein the drive of the conveyor belt 11 via the guide rollers 12 takes place.
  • a stepping motor 13 is provided as drive of the conveyor belt 11.
  • the pressure roller 17 of the motion transmission component is arranged within the endless loop formed by the conveyor belt 11 and arranged relative to the printing unit 1 via the Anpreßgabel 18 according to the direction of movement 28 in a direction substantially perpendicular to the conveyor belt plane by means of the stepping motor 16.
  • the drive of the motion transmission component is formed by a stepper motor 16, which is mounted by means of screws 26 and springs 25 resiliently on the frame 24. This is most clearly shown in Fig. 2.
  • the drive shaft 19 of the stepper motor 16 is frictionally provided with the sleeve 20 having an external thread and with the arranged on the Anpreßgabel 18 threaded bushing 21 is engaged.
  • the threaded bushing 21 on the sleeve 20 moves in a direction substantially perpendicular to the conveyor belt plane of movement 28 up or down, which also the Anpreßgabel 18 and the pressure roller 17 are moved in this direction.
  • An arranged on the sleeve 20 and secured by a locking ring 23 mechanical stop 22 ensures that too far a process of the Anpreßgabel 18 in the direction of the printing unit 3, which could lead to destruction of the printing unit 3 by the motion transfer component, is avoided. Too far a process of the pressure fork 18 in the opposite direction is prevented by the threaded bushing 21, which strikes the frame 24 after a certain travel.
  • the pressure roller 17 is positively connected to a laterally mounted guide 29, which centers the thermal transfer ribbon below the print head during the printing operation. If the pressure roller 17 is moved downwards, the guide 29 laterally clears an opening through which the thermal transfer ribbon can be easily replaced.
  • a printing medium For printing on a printing medium this is driven by means of the conveyor belt 11 in the processing area between the guide device 2 and printing unit 1 to the printing target position and pressed from below with the motion transfer component against the printing unit 3-containing printing unit.
  • the motion transfer component is timed so that upon reaching the printing position, a pressure required for the printing of the printing medium acts on the printing medium.
  • the necessary traction of the printing medium is achieved by pressure rollers 15, wherein a respective pressure roller 15 is arranged on each side of the printing medium to be printed.
  • the medium to be printed can be transported from the conveyor belt 11 in a direction of movement 27 extending substantially parallel to the printing unit 1 both to the right and to the left.
  • the conveyor belt 11 is driven via the guide rollers 12 by means of a stepper motor 13, wherein the power transmission takes place by means of a toothed belt 14.
  • Both the thermal transfer ribbon 4 and the transport medium conveyed by the conveyor belt 11 are guided past the printing unit 3 at a constant linear speed, the drive being realized in each case by means of a stepping motor.
  • the drive roller 7 is dimensioned such that per step of the driving stepper motor 8, the thermal transfer ribbon 4 travels the same way as the conveyed from the conveyor belt 11 printing medium at a step of the conveyor belt driving step motor 13. In this way, a synchronous run of thermal transfer ribbon 4 and printing medium ensured.
  • the tape running speed of the thermal transfer ribbon 4 is adjustable as well as the feed rate of the conveyed from the conveyor belt 11 pressure medium, including a control unit is provided.

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  • Electronic Switches (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)

Claims (27)

  1. Imprimante à transfert thermique, composée d'un dispositif de guidage (2) pour le support à imprimer et d'une unité d'impression (1) comprenant une tête d'impression (3) et une unité de transport pour le ruban de transfert thermique (4), dans laquelle il est prévu une unité d'entraînement agissant directement sur le ruban de transfert thermique (4), qui fait avancer le ruban de transfert thermique (4) devant la tête d'impression (3) à une vitesse de défilement du ruban adaptée à la vitesse d'avancement du support à imprimer, et dans laquelle un élément enrouleur (5) cylindrique est prévu pour enrouler le ruban de transfert thermique (4) usagé, caractérisée en ce que l'unité d'entraînement comprend un moteur (8) et au moins un rouleau d'entraînement (7), qui repose directement sur la circonférence de l'élément enrouleur (5) cylindrique et entraîne celui-ci.
  2. Imprimante à transfert thermique selon la revendication 1, caractérisée en ce qu'elle comporte une bande de transport (11), l'unité d'entraînement faisant avancer le ruban de transfert thermique (4) devant la tête d'impression (3) à une vitesse de défilement du ruban synchronisée avec la bande de transport (11).
  3. Imprimante à transfert thermique selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que l'élément enrouleur (5) est disposé de manière mobile par rapport au rouleau d'entraînement (7).
  4. Imprimante à transfert thermique selon la revendication 1, caractérisée en ce que l'élément enrouleur (5) est guidé, de manière interchangeable, dans des trous oblongs (9).
  5. Imprimante à transfert thermique selon l'une au moins des revendications précédentes, caractérisée en ce que le rouleau d'entraînement (7) est entraîné par un moteur pas-à-pas (8).
  6. Imprimante à transfert thermique selon l'une au moins des revendications précédentes, caractérisée en ce que le rouleau d'entraînement (7) possède un élément chauffant (32).
  7. Imprimante à transfert thermique selon la revendication 6, caractérisée en ce que l'élément chauffant (32) est une résistance, de préférence une résistance PTC.
  8. Imprimante à transfert thermique selon l'une quelconque des revendications précédentes, caractérisée en ce que le rouleau d'entraînement (7) possède une gorge périphérique (33).
  9. Imprimante à transfert thermique selon l'une au moins des revendications précédentes, caractérisée en ce qu'il est prévu un élément dévidoir (6) cylindrique, à partir duquel du ruban de transfert thermique (4) neuf peut être dévidé en vue de l'impression.
  10. Imprimante à transfert thermique selon la revendication 9, caractérisée en ce que la tête d'impression (3) est disposée dans le sens du dévidage du ruban de transfert thermique (4) entre l'élément dévidoir (6) et l'élément enrouleur (5).
  11. Imprimante à transfert thermique selon la revendication 9 ou 10, caractérisée en ce que l'élément dévidoir (6) possède un mécanisme de retenue.
  12. Imprimante à transfert thermique selon l'une au moins des revendications précédentes, caractérisée en ce que des galets de guidage (10) et un guide (29) sont prévus pour le guidage du ruban de transfert thermique (4).
  13. Imprimante à transfert thermique selon l'une au moins des revendications précédentes, caractérisée en ce qu'un rouleau de centrage (30) guidé dans une gorge (31) est prévu pour le guidage du ruban de transfert thermique (4).
  14. Imprimante à transfert thermique selon la revendication 13, caractérisée en ce que le rouleau de centrage (30) a une forme conique.
  15. Imprimante à transfert thermique selon l'une au moins des revendications précédentes, caractérisée en ce que la vitesse de défilement du ruban de transfert thermique (4) est réglable.
  16. Imprimante à transfert thermique selon la revendication 1, caractérisée en ce que le système de guidage (2) pour le support à imprimer est disposé en face de la tête d'impression (3) en ménageant une distance définissant un espace de travail, le système de guidage (2) comprenant une unité de transport et une unité de déplacement destinée à modifier la distance entre le système de guidage (2) et la tête d'impression (3).
  17. Imprimante à transfert thermique selon la revendication 16, caractérisée en ce que l'unité de transport est formée d'une bande de transport (11) et d'un entraînement.
  18. Imprimante à transfert thermique selon la revendication 17, caractérisée en ce que deux rouleaux de renvoi (12) au moins sont prévus pour le guidage de la bande de transport (11).
  19. Imprimante à transfert thermique selon l'une quelconque des revendications 17 à 18, caractérisée en ce que la bande de transport (11) forme une boucle sans fin continue.
  20. Imprimante à transfert thermique selon l'une quelconque des revendications 17 à 19, caractérisée en ce que le matériau à imprimer peut être amené à la tête d'impression (3) au moyen de la bande de transport (11) dans un plan sensiblement parallèle à l'unité d'impression (1).
  21. Imprimante à transfert thermique selon l'une quelconque des revendications 17 à 20, caractérisée en ce que l'entraînement de la bande de transport (11) est formé par un moteur pas-à-pas (13).
  22. Imprimante à transfert thermique selon l'une quelconque des revendications 17 à 21, caractérisée en ce que la vitesse d'avancement de la bande de transport (11) est réglable.
  23. Imprimante à transfert thermique selon l'une au moins des revendications 17 à 22, caractérisée en ce qu'il est prévu une unité de commande qui synchronise la vitesse de défilement du ruban de transfert thermique (4) et la vitesse d'avancement de la bande de transport (11).
  24. Imprimante à transfert thermique selon l'une au moins des revendications 17 à 23, caractérisée en ce que l'unité de réglage se compose d'un entraînement et d'un élément de transmission du mouvement, une partie au moins de l'élément de transmission du mouvement étant disposée à l'intérieur de la boucle sans fin formée par la bande de transport (11) et mobile par rapport à celle-ci.
  25. Procédé de fonctionnement d'une imprimante à transfert thermique selon l'une quelconque des revendications précédentes, dans lequel un ruban de transfert thermique (4) est dévidé au moyen d'une unité d'entraînement à partir d'un élément dévidoir (6), passé devant une tête d'impression (3) et, après l'impression d'un support d'impression, enroulé sous forme de ruban de transfert thermique (4) usagé sur un élément enrouleur (5), caractérisé en ce que l'élément enrouleur (5) est entraîné à une vitesse circonférentielle constante par un rouleau d'entraînement (7) de l'unité d'entraînement, qui se met en prise directement sur le pourtour de l'élément enrouleur (5).
  26. Procédé selon la revendication 25, caractérisé en ce que les différentes couches du ruban de transfert thermique (4) enroulé sur l'élément enrouleur (5) sont collées.
  27. Procédé selon la revendication 25 ou 26, caractérisé en ce que le ruban de transfert thermique (4) passant au niveau d'un élément chauffant (32) de l'unité d'entraînement est chauffé pendant une courte durée.
EP99107934A 1999-01-02 1999-04-22 Imprimante par transfert thermique Expired - Lifetime EP1016535B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99107934A EP1016535B1 (fr) 1999-01-02 1999-04-22 Imprimante par transfert thermique
US09/474,509 US6384855B1 (en) 1999-01-02 1999-12-29 Thermal transfer printer

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99100004 1999-01-02
EP99100004 1999-01-02
EP99107934A EP1016535B1 (fr) 1999-01-02 1999-04-22 Imprimante par transfert thermique

Publications (3)

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EP1016535A2 EP1016535A2 (fr) 2000-07-05
EP1016535A3 EP1016535A3 (fr) 2001-04-25
EP1016535B1 true EP1016535B1 (fr) 2006-07-19

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EP99107934A Expired - Lifetime EP1016535B1 (fr) 1999-01-02 1999-04-22 Imprimante par transfert thermique

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EP (1) EP1016535B1 (fr)

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US9399356B1 (en) * 2015-09-21 2016-07-26 Toshiba Tec Kabushiki Kaisha Printer apparatus

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ATE185321T1 (de) * 1993-07-30 1999-10-15 Canon Kk Bildausgabeanlage und bilderzeugungsgerät zur korrektur von ungleichmässigkeiten in der dichte
US6132120A (en) * 1995-03-29 2000-10-17 Brother Kogyo Kabushiki Kaisha Tape-shaped label printing device
JPH09300673A (ja) * 1996-05-16 1997-11-25 Dainippon Printing Co Ltd 中間転写記録媒体を用いた熱転写記録方法及び熱転写記録装置
JPH09309239A (ja) * 1996-05-22 1997-12-02 Kofu Nippon Denki Kk 熱転写印字用インクシートおよびそれを使用した熱転写 印字機構
GB9613167D0 (en) * 1996-06-24 1996-08-28 Itw Ltd A printer for printing on a continuous print medium
GB9701831D0 (en) * 1997-01-29 1997-03-19 Neopost Ltd Thermal transfer printing apparatus
US6262755B1 (en) * 1997-12-23 2001-07-17 Datacard Corporation Multicolor thermal printing apparatus

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US6384855B1 (en) 2002-05-07
EP1016535A3 (fr) 2001-04-25
EP1016535A2 (fr) 2000-07-05

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