[go: up one dir, main page]

WO1998007573A1 - Feuille receptrice pour impression par transfert thermique - Google Patents

Feuille receptrice pour impression par transfert thermique Download PDF

Info

Publication number
WO1998007573A1
WO1998007573A1 PCT/GB1997/002186 GB9702186W WO9807573A1 WO 1998007573 A1 WO1998007573 A1 WO 1998007573A1 GB 9702186 W GB9702186 W GB 9702186W WO 9807573 A1 WO9807573 A1 WO 9807573A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiver
thermal transfer
substrate
poly
print
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.)
Ceased
Application number
PCT/GB1997/002186
Other languages
English (en)
Inventor
Ian Stephenson
Gary John Jenno
Christopher Bennett
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to JP51048998A priority Critical patent/JP2001505493A/ja
Priority to EP97936787A priority patent/EP0918644A1/fr
Publication of WO1998007573A1 publication Critical patent/WO1998007573A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers

Definitions

  • This invention relates to thermal transfer printing and more particularly to receiver sheets for use in such printing
  • Dye diffusion thermal transfer printing (hereinafter referred to as D2T2 printing) is a process in which one or more thermally transferable dyes are caused to transfer from selected areas of a dyesheet to a receiver by thermal stimuli, thereby to form an image
  • a dyesheet comprising a thin substrate supporting a dyecoat containing one or more uniformly spread dyes
  • printing is effected by heating selected discrete areas of the dyesheet while the dyecoat is pressed against a dye-receptive surface of a receiver sheet, thereby causing dye to transfer to corresponding areas of the receiver
  • the shape of the image transferred is determined by the number and locations of the discrete areas which are subjected to heating
  • Full colour prints can be produced by printing with different coloured dyecoats sequentially in like manner, and the different coloured dyecoats are usually provided as discrete uniform panels arranged in a repeated sequence along a ribbon-shaped dyesheet
  • High resolution photograph-like prints can be produced by using appropriate printing equipment, such as a programmable thermal print head or laser printer,
  • Receiver sheets conventionally comprise a substrate with a dye receiving surface on one side into which a dye ts thermally transferable and retainable
  • the dye-receiving surface may be provided by one side of the substrate.
  • receiver sheets typically comprise a substrate supporting a receiver layer which layer presents a dye-receiving surface
  • the receiver layer typically comprises a dye-receptive polymer such as an amorphous polyester and generally contains a release agent to prevent the dye sheet adhering to the receiver layer
  • thermoplastic films for example polyethylene terephthalate, and laminated paper substrates
  • Receiver sheets bearing a D2T2 image have found wide usage in security applications, for example documents such as credit cards, charge cards, identification cards, driving licences and passports
  • the security of such documents can be enhanced by lamination to a cover sheet to make it difficult to substitute the image
  • Security can be further enhanced by ensuring that, even if separation does occur, neither the image or the cover sheet can be re-used This can be achieved by controlling the adhesion such that the plane of failure is image (i ⁇ receiver layer) from substrate resulting in the destruction of the image and at least part of the image remaining adhered to the cover sheet
  • a thermal transfer printing receiver sheet comprising a substrate, a receiver coat on one surface of the substrate and between the substrate and the receiver coat, a subbing layer comprising an amorphous polyester and a poly vinylchloride/poly vinylacetate copolymer
  • a ratio of polyester to copolymer is within the range 400 1 to 100 1
  • the force needed to separate the receiver layer from the substrate remains substantially constant at a value of between 15 and 20 N Outside this range , the force decreases and increases sharply and is either too low or so high that there is a risk that the plane of failure will be between the cover sheet and the image surface This is particularly so in the case of passports where the temperature used to laminate the cover sheet to the image is relatively low, i ⁇ 100°C
  • the dyes used in D2T2 printing are mobile molecules which can diffuse into and out of the receiver when warmed, or in the presence of various lyophilic liquids
  • grease from a finger holding a print can lead to migration of the dye to the surface, making the print seem dirty or causing smearing of the dyes
  • plasticisers in plastic material from which cover sheets are made can cause havoc with unprotected D2T2 images
  • dioctylphthalate used as a plasticiser in polyvinyl chloride from which such cover sheets are commonly made
  • the adhesion between the image and such a barrier layer must be greater than the adhesion between the receiver layer and the substrate Barrier layers which are particularly suitable for use with the receiver sheet of the invention are described in Applicant's co-pending applications nos UK 9617285 and 9617286 The invention will be more readily understood from the
  • a series of receiver samples were prepared by coating a white Melinex ® D935 polyester substrate with 1 ⁇ m thick subcoats made up of blends of Vylon® 200 amorphous polyester and VAGH poly vinylchloride/poly vinylacetate copolymer at ratios between 100% Vylon 200 through to 80% Vylon 200 20% VAGH Coating was carried out from a 4% solids solution in ethyl methyl ketone Each sample was then coated with a 4 8 ⁇ m thick receiver layer based on Vylon 200 containing a silicone release agent (Tergomer HSi 231 1 ) crosslinked by Cymel 303 Standard test images were then prepared using a Mitsubishi CP15EP thermal printer and the resultant images were laminated to 30mm strips of cover sheet at a temperature of 99 to 104 °C and subjected to a 180° peel test on a 6021 Instron strain gauge at peel rates of 0 5, 5 and 10 mm/sec The results are shown in the graph

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

La présente invention concerne une feuille réceptrice pour impression par transfert thermique comprenant un substrat, une couche réceptrice sur une surface du substrat et entre le substrat et la couche réceptrice, une couche de substratage comprenant un polyester amorphe et un copolymère chlorure de polyvinyle/acétate de polyvinyle, le taux de polyester/copolymère étant de préférence compris dans la plage de 400:1 à 100:1. La présente invention se rapporte également à un ensemble stratifié comprenant un support, une couche de substratage comprenant un polyester amorphe et un copolymère chlorure de polyvinyle/acétate de polyvinyle sur le support, une copie de transfert thermique par diffusion de colorants sur ladite couche de substratage, une pellicule barrière sur la surface de la copie, ladite pellicule comprenant un matériau polymère dont la température de transition vitreuse est comprise entre 67 et 85 °C, et une feuille protectrice superposée au support de manière qu'elle recouvre la copie.
PCT/GB1997/002186 1996-08-16 1997-08-14 Feuille receptrice pour impression par transfert thermique Ceased WO1998007573A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP51048998A JP2001505493A (ja) 1996-08-16 1997-08-14 熱転写印刷用被転写シート
EP97936787A EP0918644A1 (fr) 1996-08-16 1997-08-14 Feuille receptrice pour impression par transfert thermique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9617237.4A GB9617237D0 (en) 1996-08-16 1996-08-16 Thermal transfer printing receiver sheets
GB9617237.4 1996-08-16

Publications (1)

Publication Number Publication Date
WO1998007573A1 true WO1998007573A1 (fr) 1998-02-26

Family

ID=10798581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/002186 Ceased WO1998007573A1 (fr) 1996-08-16 1997-08-14 Feuille receptrice pour impression par transfert thermique

Country Status (4)

Country Link
EP (1) EP0918644A1 (fr)
JP (1) JP2001505493A (fr)
GB (1) GB9617237D0 (fr)
WO (1) WO1998007573A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013107773A1 (fr) 2012-01-19 2013-07-25 Bayer Intellectual Property Gmbh Feuille plastique pour impression par transfert thermique par diffusion de colorants
WO2013107777A1 (fr) 2012-01-19 2013-07-25 Bayer Intellectual Property Gmbh Feuille plastique pour impression par transfert thermique par diffusion de colorants
WO2019223008A1 (fr) 2018-05-25 2019-11-28 Evonik Degussa Gmbh Matière plastique pour impression par impression par transfert thermique par diffusion de colorant
WO2020000418A1 (fr) 2018-06-29 2020-01-02 Evonik Specialty Chemicals (Shanghai) Co., Ltd. Composite à base de polymère approprié pour un marquage au laser et une impression par impression par transfert thermique par diffusion de colorant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283048A2 (fr) * 1987-03-20 1988-09-21 Dai Nippon Insatsu Kabushiki Kaisha Feuille réceptrice d'images
US5106816A (en) * 1990-03-19 1992-04-21 Ricoh Company, Ltd. Image receiving medium for use in sublimation-type thermal iamge transfer recording system
EP0487727A1 (fr) * 1989-07-14 1992-06-03 Dai Nippon Insatsu Kabushiki Kaisha Film de couverture a transfert thermique
EP0678397A1 (fr) * 1994-04-22 1995-10-25 Dai Nippon Printing Co., Ltd. Feuille réceptrice d'image par transfer thermique
WO1996014993A1 (fr) * 1994-11-16 1996-05-23 Imperial Chemical Industries Plc Cartes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283048A2 (fr) * 1987-03-20 1988-09-21 Dai Nippon Insatsu Kabushiki Kaisha Feuille réceptrice d'images
EP0487727A1 (fr) * 1989-07-14 1992-06-03 Dai Nippon Insatsu Kabushiki Kaisha Film de couverture a transfert thermique
US5106816A (en) * 1990-03-19 1992-04-21 Ricoh Company, Ltd. Image receiving medium for use in sublimation-type thermal iamge transfer recording system
EP0678397A1 (fr) * 1994-04-22 1995-10-25 Dai Nippon Printing Co., Ltd. Feuille réceptrice d'image par transfer thermique
WO1996014993A1 (fr) * 1994-11-16 1996-05-23 Imperial Chemical Industries Plc Cartes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013107773A1 (fr) 2012-01-19 2013-07-25 Bayer Intellectual Property Gmbh Feuille plastique pour impression par transfert thermique par diffusion de colorants
WO2013107777A1 (fr) 2012-01-19 2013-07-25 Bayer Intellectual Property Gmbh Feuille plastique pour impression par transfert thermique par diffusion de colorants
US9375968B2 (en) 2012-01-19 2016-06-28 Covestro Deutschland Ag Plastic film for printing by dye diffusion thermal transfer printing
US9446619B2 (en) 2012-01-19 2016-09-20 Covestro Deutschland Ag Plastic film for printing by dye diffusion thermal transfer printing
WO2019223008A1 (fr) 2018-05-25 2019-11-28 Evonik Degussa Gmbh Matière plastique pour impression par impression par transfert thermique par diffusion de colorant
US11807025B2 (en) 2018-05-25 2023-11-07 Evonik Operations Gmbh Plastic material for printing by dye diffusion thermal transfer printing
WO2020000418A1 (fr) 2018-06-29 2020-01-02 Evonik Specialty Chemicals (Shanghai) Co., Ltd. Composite à base de polymère approprié pour un marquage au laser et une impression par impression par transfert thermique par diffusion de colorant

Also Published As

Publication number Publication date
JP2001505493A (ja) 2001-04-24
EP0918644A1 (fr) 1999-06-02
GB9617237D0 (en) 1996-09-25

Similar Documents

Publication Publication Date Title
EP0657302B1 (fr) Elément donneur de colorant pour transfert thermique de colorant contenant und couche protectrice transférable
EP0918645B1 (fr) Pellicules protectrices pour copies par transfert thermique a diffusion de colorants
EP0659578B1 (fr) Agent de libération pour élément récepteur de colorant utilisé dans transfert thermique
EP0820876B1 (fr) Elément donneur de colorant pour transfert thermique de colorant avec couche protectrice transférable
JP3475298B2 (ja) 中間転写記録媒体を用いた画像形成方法
EP1329333B1 (fr) Feuille pour la protection d'images transférables thermiquement, méthode pour former des couches protectrices, et enregistrement produit par cette méthode
EP0733488B1 (fr) Elément donneur de colorant pour transfert thermique de colorant contenant une couche protectrice transférable
WO1998007573A1 (fr) Feuille receptrice pour impression par transfert thermique
EP0792214B1 (fr) Cartes
EP0845369B1 (fr) Elément donneur pour transfert thermique d'un pigment contenant un liant
US5962369A (en) Thermal dye transfer dye-donor element with transferable protection overcoat
EP0845371B1 (fr) Une impression de transfert thermique de colorant laminée à une couche protectrice par une couche adhésive
WO1998007577A1 (fr) Pellicules protectrices pour copies par transfert thermique a diffusion de colorants
EP0649758B1 (fr) Couche intermédiaire pour une couche de glissement dans un élément donneur de colorant utilisé pour transfert thermique de colorant
EP0865932B1 (fr) Document non-falsifiable
EP1216840B1 (fr) Elément donneur de colorant contenant une couche protectrice transférable
JP3270955B2 (ja) 熱転写受像シート
JPH07205557A (ja) 熱転写受像シート
US6197726B1 (en) Cards
EP0980765A2 (fr) Feuille pour l'impression par transfert thermique d'images ayant un lustre métallique
JPH1081078A (ja) 熱転写シート

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1997936787

Country of ref document: EP

ENP Entry into the national phase

Ref country code: JP

Ref document number: 1998 510489

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 09242355

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 1997936787

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: 1997936787

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1997936787

Country of ref document: EP