EP0940268A1 - Printing ribbon for thermal transfer of coloured printing ink - Google Patents

Printing ribbon for thermal transfer of coloured printing ink Download PDF

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Publication number
EP0940268A1
EP0940268A1 EP99400528A EP99400528A EP0940268A1 EP 0940268 A1 EP0940268 A1 EP 0940268A1 EP 99400528 A EP99400528 A EP 99400528A EP 99400528 A EP99400528 A EP 99400528A EP 0940268 A1 EP0940268 A1 EP 0940268A1
Authority
EP
European Patent Office
Prior art keywords
layer
ribbon
ink
printing
thermal transfer
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Withdrawn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
EP99400528A
Other languages
German (de)
French (fr)
Inventor
Eric Cavarero
Michel Brot
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.)
Sagem SA
Original Assignee
Sagem 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 Sagem SA filed Critical Sagem SA
Publication of EP0940268A1 publication Critical patent/EP0940268A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/38207—Contact thermal transfer or sublimation processes characterised by aspects not provided for in groups B41M5/385 - B41M5/395
    • B41M5/38214—Structural details, e.g. multilayer systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers

Definitions

  • the present invention relates to a transfer printing ribbon. thermal ink for printer.
  • thermal transfer is understood as well the heat transfer in the strict sense that sublimation, that is to say everything ink transfer process by a thermal source. The man of profession knows this.
  • a black ribbon has a support film, generally made of polyethylene (PET), a layer of black ink and, in between, a layer anti-photocopying also black.
  • PET polyethylene
  • the two layers being opaque to infrared rays, in some printers we use a infrared transceiver assembly to detect the presence of ribbon. If the radiation from an emitting infrared diode is received by a phototransistor receiver is that there is no ribbon. Otherwise, the radiation is stopped by the ribbon.
  • the ink layer is directly applied to the film, without black anti-copy layer intermediate, to avoid that after printing we cannot read directly the ribbon. Otherwise, the ink-free places would appear clearly on the black background of the photocopy layer, perfectly delimited by the remaining parts of the color ink layer.
  • thermal transfer printing ribbon color ink does not allow presence detection by radiation (infrared), since the ribbon (film and ink layer of color) is completely transparent to rays (infrared).
  • the plaintiff decided to offer a printing ribbon by thermal transfer of color ink for printer, with film supporting a layer of printing ink, characterized in that it includes detection means arranged to obstruct a radiation of determined wavelength for which the layer printing ink is transparent.
  • the presence of the ribbon can therefore be detected in this wavelength by a transmitter-receiver unit operating in this length wave, for example infrared.
  • an opaque intermediate ink layer is provided. in the wavelength considered, between the film and the ink layer to detect the presence of the ribbon.
  • the ribbon comprises a support film 1, here made of polyethylene, a layer 2 color printing ink, conventional, and in between an intermediate layer 3, here a layer of black ink referenced ML SUMI from the manufacturer DAI NIPPON PRINTING.
  • the film media 1 and the printing ink layer 2 are transparent to the infrared radiation, while the intermediate layer 3 is opaque in this wavelength. So a transmitter-receiver assembly operating in infrared, on the same side of the ribbon, with a mirror the other side, or respectively of the two sides of the ribbon, allows detect the presence of the ribbon.

Abstract

The ribbon includes two ink layer types. The ribbon comprises a film (1) supporting a layer of printing ink (2) and a detection layer (3). The detection layer is intended to block radiation of a given wavelength to which the ink layer is transparent. This detection layer comprises an intermediate ink layer (3) which is opaque to the wavelength in question. The detection layer lies between the supporting film (1) and the first mentioned ink layer (2). In an alternative arrangement, the supporting ribbon may be tinted in order to render it opaque to the radiation in question.

Description

La présente invention concerne un ruban d'impression par transfert thermique d'encre pour imprimante.The present invention relates to a transfer printing ribbon. thermal ink for printer.

D'emblée, on notera que par transfert thermique on entend aussi bien le transfert thermique stricto sensu que la sublimation, c'est-à-dire tout procédé de transfert d'encre par une source thermique. L'homme du métier le sait.From the outset, it will be noted that by thermal transfer is understood as well the heat transfer in the strict sense that sublimation, that is to say everything ink transfer process by a thermal source. The man of profession knows this.

Il existe des rubans à encre noire et des rubans à encre de couleur. On ne considère ici que les rubans de couleur.There are black ink ribbons and colored ink ribbons. Onne here consider only the colored ribbons.

Un ruban noir comporte un film support, généralement en polyéthylène (PET), une couche d'encre noire et, entre les deux, une couche antiphotocopie également de couleur noire. Les deux couches étant opaques aux rayons infrarouge, dans certaines imprimantes, on utilise un ensemble émetteur-récepteur infrarouge pour détecter la présence du ruban. Si le rayonnement d'une diode infrarouge émettrice est reçu par un phototransistor récepteur, c'est qu'il n'y a pas de ruban. Sinon, le rayonnement est arrêté par le ruban.A black ribbon has a support film, generally made of polyethylene (PET), a layer of black ink and, in between, a layer anti-photocopying also black. The two layers being opaque to infrared rays, in some printers we use a infrared transceiver assembly to detect the presence of ribbon. If the radiation from an emitting infrared diode is received by a phototransistor receiver is that there is no ribbon. Otherwise, the radiation is stopped by the ribbon.

Dans le cas d'un ruban de couleur, la couche d'encre, non noire, est directement appliquée sur le film, sans couche antiphotocopie noire intermédiaire, pour éviter qu'après impression on ne puisse lire directement le ruban. Sinon, les endroits dépourvus d'encre apparaitraient clairement sur le fond noir de la couche antiphotocopie, parfaitement délimités par les parties restantes de la couche d'encre de couleur.In the case of a colored ribbon, the ink layer, not black, is directly applied to the film, without black anti-copy layer intermediate, to avoid that after printing we cannot read directly the ribbon. Otherwise, the ink-free places would appear clearly on the black background of the photocopy layer, perfectly delimited by the remaining parts of the color ink layer.

Mais une telle structure de ruban d'impression par transfert thermique d'encre de couleur n'autorise pas la détection de présence par rayonnement (infrarouge), puisque le ruban (film et couche d'encre de couleur) est totalement transparent aux rayons (infrarouge). But such a structure of thermal transfer printing ribbon color ink does not allow presence detection by radiation (infrared), since the ribbon (film and ink layer of color) is completely transparent to rays (infrared).

Et bien, la demanderesse a décidé de proposer un ruban d'impression par transfert thermique d'encre dé couleur pour imprimante, avec un film supportant une couche d'encré d'impression, caractérisé par le fait qu'il comporte des moyens de détection agencés pour faire obstacle à un rayonnement de longueur d'onde déterminée pour lequel la couche d'encre d'impression est transparente.Well, the plaintiff decided to offer a printing ribbon by thermal transfer of color ink for printer, with film supporting a layer of printing ink, characterized in that it includes detection means arranged to obstruct a radiation of determined wavelength for which the layer printing ink is transparent.

La présence du ruban peut donc être détectée dans cette longueur d'onde par un ensemble émetteur-récepteur fonctionnant dans cette longueur d'onde, par exemple l'infrarouge.The presence of the ribbon can therefore be detected in this wavelength by a transmitter-receiver unit operating in this length wave, for example infrared.

Avantageusement, il est prévu une couche d'encre intermédiaire opaque dans la longueur d'onde considérée, entre le film et la couche d'encre d'impression, pour détecter la présence du ruban.Advantageously, an opaque intermediate ink layer is provided. in the wavelength considered, between the film and the ink layer to detect the presence of the ribbon.

Mais on pourrait également envisager de considérer un film support teinté dans la masse pour être opaque dans ladite longueur d'onde.But we could also consider considering a tinted support film in the mass to be opaque in said wavelength.

Comme couche intermédiaire de détection de présence, on peut considérer par exemple la couche référencée ML SUMI du fabricant DAI NIPPON PRINTING.As an intermediate presence detection layer, consider for example the layer referenced ML SUMI from the manufacturer DAI NIPPON PRINTING.

L'invention sera mieux comprise à l'aide de la description suivante d'une forme de réalisation intéressante du ruban d'impression par transfert thermique, en référence à la figure unique qui le représente en coupe.The invention will be better understood using the following description of a interesting embodiment of the transfer printing ribbon thermal, with reference to the single figure which represents it in section.

Le ruban comporte un film support 1, ici en polyéthylène, une couche d'encre d'impression de couleur 2, conventionnelle, et, entre les deux, une couche intermédiaire 3, ici une couche d'encre de couleur noire référencée ML SUMI du fabricant DAI NIPPON PRINTING. Le film support 1 et la couche d'encre d'impression 2 sont transparents au rayonnement infrarouge, alors que la couche intermédiaire 3 est opaque dans cette longueur d'onde. Ainsi, un ensemble émetteur-récepteur fonctionnant en infrarouge, d'un même côté du ruban, avec un miroir de l'autre côté, ou respectivement des deux côtés du ruban, permet de détecter la présence du ruban.The ribbon comprises a support film 1, here made of polyethylene, a layer 2 color printing ink, conventional, and in between an intermediate layer 3, here a layer of black ink referenced ML SUMI from the manufacturer DAI NIPPON PRINTING. The film media 1 and the printing ink layer 2 are transparent to the infrared radiation, while the intermediate layer 3 is opaque in this wavelength. So a transmitter-receiver assembly operating in infrared, on the same side of the ribbon, with a mirror the other side, or respectively of the two sides of the ribbon, allows detect the presence of the ribbon.

Claims (4)

Ruban d'impression par transfert thermique d'encre de couleur pour imprimante, avec un film (1) supportant une couche d'encre d'impression (2), caractérisé par le fait qu'il comporte des moyens de détection (3) agencés pour faire obstacle à un rayonnement de longueur d'onde déterminée pour lequel la couche d'encre d'impression (2) est transparente.Color ink thermal transfer printing ribbon for printer, with a film (1) supporting a layer of printing ink (2), characterized in that it includes detection means (3) arranged to obstruct wavelength radiation determined for which the printing ink layer (2) is transparent. Ruban d'impression par transfet thermique selon la revendication 1, dans lequel il est prévu une couche d'encre intermédiaire (3) opaque dans la longueur d'onde considérée, entre le film (1) et la couche d'encre d'impression (2), pour détecter la présence du ruban.Thermal transfer printing ribbon according to claim 1, in which an opaque intermediate ink layer (3) is provided in the wavelength considered, between the film (1) and the ink layer (2), to detect the presence of the ribbon. Ruban d'impression par transfert thermique selon la revendication 2, dans lequel la couche intermédiaire de détection de présence (3) est une couche référencée ML SUMI du fabricant DAI NIPPON PRINTING.Thermal transfer printing ribbon according to claim 2, wherein the intermediate presence detection layer (3) is a layer referenced ML SUMI from the manufacturer DAI NIPPON PRINTING. Ruban d'impression par transfert thermique selon la revendication 1, dans lequel le film support (1) est teinté dans la masse pour être opaque dans ladite longueur d'onde.Thermal transfer printing ribbon according to claim 1, in which the support film (1) is tinted in the mass to be opaque in said wavelength.
EP99400528A 1998-03-04 1999-03-04 Printing ribbon for thermal transfer of coloured printing ink Withdrawn EP0940268A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9802605 1998-03-04
FR9802605A FR2775631B1 (en) 1998-03-04 1998-03-04 COLOR INK THERMAL TRANSFER PRINTING TAPE FOR PRINTER

Publications (1)

Publication Number Publication Date
EP0940268A1 true EP0940268A1 (en) 1999-09-08

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EP99400528A Withdrawn EP0940268A1 (en) 1998-03-04 1999-03-04 Printing ribbon for thermal transfer of coloured printing ink

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EP (1) EP0940268A1 (en)
FR (1) FR2775631B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6322684A (en) * 1986-07-16 1988-01-30 Olympus Optical Co Ltd Heat-meltable transfer ink sheet
JPS63104881A (en) * 1986-10-22 1988-05-10 Dainippon Printing Co Ltd Thermal recording material and thermal recording method using the same
JPH02175291A (en) * 1988-12-28 1990-07-06 Canon Inc Sublimable heat transfer recording medium and heat transfer recording method
EP0530018A1 (en) * 1991-08-29 1993-03-03 Imperial Chemical Industries Plc A thermal melt transfer colour ink sheet
JPH06199021A (en) * 1992-12-29 1994-07-19 Sony Corp Ink ribbon

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6322684A (en) * 1986-07-16 1988-01-30 Olympus Optical Co Ltd Heat-meltable transfer ink sheet
JPS63104881A (en) * 1986-10-22 1988-05-10 Dainippon Printing Co Ltd Thermal recording material and thermal recording method using the same
JPH02175291A (en) * 1988-12-28 1990-07-06 Canon Inc Sublimable heat transfer recording medium and heat transfer recording method
EP0530018A1 (en) * 1991-08-29 1993-03-03 Imperial Chemical Industries Plc A thermal melt transfer colour ink sheet
JPH06199021A (en) * 1992-12-29 1994-07-19 Sony Corp Ink ribbon

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 227 (M - 713) 28 June 1988 (1988-06-28) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 346 (M - 742) 16 September 1988 (1988-09-16) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 440 (M - 1028) 20 September 1990 (1990-09-20) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 559 (M - 1692) 25 October 1994 (1994-10-25) *

Also Published As

Publication number Publication date
FR2775631A1 (en) 1999-09-10
FR2775631B1 (en) 2000-03-31

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