EP0404948B1 - Transfert d'images sur une carte - Google Patents

Transfert d'images sur une carte Download PDF

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Publication number
EP0404948B1
EP0404948B1 EP89907819A EP89907819A EP0404948B1 EP 0404948 B1 EP0404948 B1 EP 0404948B1 EP 89907819 A EP89907819 A EP 89907819A EP 89907819 A EP89907819 A EP 89907819A EP 0404948 B1 EP0404948 B1 EP 0404948B1
Authority
EP
European Patent Office
Prior art keywords
card
transfer sheet
image
thermal transfer
layer
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
EP89907819A
Other languages
German (de)
English (en)
Other versions
EP0404948A1 (fr
EP0404948A4 (en
Inventor
Koichi Asahi
Noritaka Egashira
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Publication of EP0404948A1 publication Critical patent/EP0404948A1/fr
Publication of EP0404948A4 publication Critical patent/EP0404948A4/en
Application granted granted Critical
Publication of EP0404948B1 publication Critical patent/EP0404948B1/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
    • 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

  • the present invention relates to a method for transferring images onto cards.
  • the general method used in order to have an original motif or pattern on a conventional blank card is to employ direct printing onto the surface of the card.
  • the inventors considered the photograph-quality images that are now possible due to recent advances in thermal transfer technology using the sublimation transfer method, and concluded that if the sublimation transfer recording method was used to transfer an image drawn beforehand onto a thermal transfer sheet, onto a prepaid card, then it would be possible to manufacture original cards far more inexpensively than by the conventional printing method.
  • the lamination performed by a conventional laminating machine involves temperature and pressure conditions (such as a heating temperature of between 100°C and 130°C, and a pressure of 0.5 to 3.0 kg/cm2) made it difficult to achieve a transferred image which was clear and without cracking.
  • temperature and pressure conditions such as a heating temperature of between 100°C and 130°C, and a pressure of 0.5 to 3.0 kg/cm2
  • the inventors concluded that it would be possible to complete the present invention if the hardness of the pair of rubber rollers in the laminating device was limited to a certain range, and if the heating temperature and the pressure of these pressure rollers were also controlled to within certain ranges, and thereby make it possible to achieve clear image to prepaid cards.
  • the objects of the invention can be achieved by providing a method for transferring an image to a card, comprising the steps of: preparing a thermal transfer sheet comprising a base layer, a separation layer and an image receiving layer for receiving dyes that move from a dye transfer sheet laminated in this order; forming an image by a sublimation transfer recording method on said image receiving layer provided in said thermal transfer sheet; placing said thermal transfer sheet on said card in an overlapping relation; passing the overlapped thermal transfer sheet and said card through a pair of rubber rollers of a laminating machine of a hardness selected in a range of 70° to 90°, with the rollers heated in a range of 130° to 180°C and urged to each other under a pressure of 3 to 15 kg/cm2; and separating at least said base layer out of said separation layer so that said image receiving layer is transfer laminated to said card, and the method mentioned above wherein said passing step of said thermal transfer sheet and said card is carried out while the rubber rollers are rotated at a rotating speed selected in a range of
  • reference numeral 1 is a card
  • reference numeral 2 is a thermal transfer sheet.
  • the thermal transfer sheet 2 has a base layer 3, a separation layer 4 and an image receiving sheet or layer 5 in order to receive the dye material that moves from a dye transfer sheet (not indicated in the figure).
  • the image receiving sheet 5 is provided with an image 6 that has been formed by dye material moving from the dye transfer sheet by the sublimation transfer recording method.
  • the base layer 3 is separated from the separation layer 4 and a material such as plastic film, synthetic paper or cellulose fiber paper or the like is used for this base layer 3.
  • a material such as plastic film, synthetic paper or cellulose fiber paper or the like is used for this base layer 3.
  • the plastic film that is used can be of polyester, PVC, polypropylene, polyethylene, polycarbonate, polyamide or the like.
  • foam films that have been slightly foamed and white films that have been manufactured by adding a filler to one of the above types of film.
  • the synthetic paper that is used can be a mixture of a polyolefin resin or some other type of synthetic resin and an inorganic filler or the like, with this mixture then being extruded, or it can be a polystyrene resin, a polyester resin, a polyolefin resin or some other film surface which has had waterproof pigment applied.
  • the cellulose fiber paper that is used can be Kent paper, coating paper, cast-coated paper, synthetic rubber paper or synthetic resin paper or paper that has been impregnated with synthetic resin emulsion, or the like.
  • the base material can be cellulose paper to which a foamed layer has been adhered to both sides.
  • the separation layer 4 can be formed by coating the base layer 3 with an acrylic resin, an urethane resin, a vinylchloride-vinylacetate resin, an acetyl cellulose, a silicon resin or some other type of transparent resin.
  • This separation layer 4 covers the image receiving sheet 5 after the base layer 3 has been separated, and functions as a protective layer. Wax or effectively transparent organic or inorganic particles can be added to the separation layer 4. By the addition of this additive, it is possible to improve the scratch resistance of the separation layer 4.
  • a photo-stabilizer that absorbs ultraviolet light.
  • the image receiving sheet 5 contains dyes that move from the dye transfer sheet when the image is formed, and is of a resin that can receive the dyes and thus form an image.
  • resins are the following synthetic resins used individually, or as a mixture of two or more.
  • a mixture comprising a saturated polyester and a copolymer of vinyl chloride and vinylacetate may also be used as a resin to form the image receiving layer.
  • the vinylchloride content of the copolymer is desirably selected from a range of up to 85 to 97 wt%, and the degree of polymerization-is desirably selected from a range of from 200 to 800.
  • the vinylchloride-vinylacetate copolymer may contain a vinyl alcohol component, a maleic acid component or the like.
  • the image receiving sheet 5 may also contain an ultraviolet light absorbing agent, an antioxidant, a plasticizer, a pigment lubricant, and silicon oil or some other separation agent.
  • the thermal transfer sheet 2 is not limited to the one indicated in FIG. 1, and can also be the one indicated in FIG. 2. In FIG. 2, those parts that are the same as those in FIG. 1 are indicated using the same numerals.
  • the thermal transfer sheet 2 of FIG. 2 is provided with an adhesive layer 3a on a base layer 3, and on this adhesive layer 3a are successively formed a separation layer 4 and an image receiving sheet 5.
  • the image receiving sheet 5 is provided with an image 6 which is formed by dyes moving from a dye transfer sheet (not indicated in the figure) by the sublimation transfer recording method. Of these layers, the adhesive layer 3a can be separated from both the base layer 3 and the separation layer 4.
  • a transparent resin film of 3.0 to 50 ⁇ m thickness can be used as the separation layer 4.
  • This transparent film can be a polyethylene terephthalate, a cellulose resin such as cellophane, an acrylic series resin or some other type of transparent vinylchloride film.
  • the card 1 to which the image of the thermal transfer sheet 2 is to be transferred to can be a paper card or cellulose base material to which polyethylene terephthalate, a vinylchloride or some other type of plastic card has been press-coated to form a paper-plastic card.
  • the card can also be a magnetic recording card, or a card containing IC chips or the like.
  • reference numeral 7 represents rubber pressing rollers
  • reference numeral 8 represents a heater that covers the rubber pressing rollers. Then, the thermal transfer sheet 2 and the card 1 are made to overlap so that the image receiving sheet 5 of the thermal transfer sheet 2 is in contact with the surface of the card 1 and then the overlapping unit 9 is passed between rubber pressing rollers 7, 7 and the overlapping unit 9 is pressed and heated.
  • a heating temperature of between 130°C and 180°C is necessary but a heating temperature of between 140°C and 160°C is desirable. If the heating temperature is less than 130°C then there will not be proper transfer of the thermal transfer sheet to the card 1 and if the heating temperature is greater than 180°C, then the card 1 will deform due to the excessive heat.
  • the pressure of the rubber pressing rollers 7 must be between 3 and 15 kg/cm2 but a pressure of between 10 and 13 kg/cm2 is desirable. If the pressure is less than 3 kg/cm2 then the transfer to the card l will not be proper but if the pressure exceeds 15 kg/cm2 then the card 1 will deform and the deformation will also occur in the rubber pressing rollers 7 themselves. Adjusting the pressure of the rubber pressing rollers 7 is enabled by a configuration that varies the interval between the rubber pressing rollers 7, this interval between the rubber pressing rollers 7 (normally the interval between the shafts) can be adjusted to achieve a predetermined pressure but the pressure can also be adjusted by changing the thickness of the rubber or the diameter of the rollers.
  • the hardness of the rubber of the rubber pressing rollers 7 is 70° to 90° but it is necessary to use rubber with a hardness of between 80° and 85°. Moreover, the rubber hardness is measurable by a rubber penetrometer. If the rubber hardness of the rubber pressing rollers 7 is less than 70° or greater than 90°, then it will be difficult to obtain a pressure exceeding 3 kg/cm2. Examples of rubber which has the desired degree of hardness are silicon rubber, ethylene-propylene rubber, styrene-butadiene rubber or the like.
  • the rubber pressing rollers 7 should rotate at a speed of rotation of between 0.5 and 1.5 cm/sec. and desirably, at a speed of rotation of between 0.8 and 1.2 cm/sec. At such a speed of rotation, it is possible to apply the optimum amount of heat to heat-and-temperature adhere the thermal transfer sheet 2 to the card 1.
  • the base layer 3 is separated from the separation layer 4 (refer to FIG. 1) or the base layer 3 and the adhesive layer 3a are separated from the separation layer 4 (refer to FIG. 2).
  • reference numeral 10 is a pull roller provided according to necessity, and need not be provided.
  • FIG. 4 instead of the heater 8 indicated in FIG. 3, shown in FIG. 4 is a heating method in which a halogen lamp 11 is provided as the means of heating.
  • reference numeral 12 in FIG. 4 represents a heat-discharge plate which allows efficient cooling of the card 1 if it is provided for a process after the rubber pressing rollers 7.
  • the two rubber rollers are mounted so that the distance between the shafts of the rubber rollers is 28 mm.
  • the rubber roller pressure was measured by a press scale (of FUJI FILM CO.) and was found to be 11.0 kg/cm2.
  • two halogen lamps were placed in the vicinity of these rubber pressing rollers 7 and the temperature of the rubber roller surface was detected by sensors placed in the vicinity of the rubber roller surface. The output of the halogen lamps was controlled by a thermostat so that the temperature of the rubber roller surface was held at approximately 155°C.
  • the speed of rotation of the rubber rollers was set at 1.0 cm/sec.
  • the sensor that was used to detect the temperature of the surface was a surface thermometer such as the HL-260 Thermometer (of the ANRITSU KEIKI K.K.).
  • the base material was formed from foamed polyethylene terephthalate film and one surface was provided with a separation layer of acryl resin, and then an image receiving layer comprising a blended resin blended of polyester and a vinylchloride-vinylacetate copolymer on the surface of a separation layer. Then the HITACHI LTD. VY-S100 dye transfer sheet was used and a videoprinter VY-110 (HITACHI LTD.) was used to form an image on the image receiving layer and then the thermal transfer sheet was made to overlap a prepaid card so that image receiving layer surface was in contact with the surface of the prepaid card.
  • this overlapping unit was passed through a laminating apparatus having the conditions described above, and was heated and pressed by the rubber pressing rollers to be heat-and-pressure bonded. After cooling, the obtained card had a clear photograph-quality image which the image receiving layer being protected by the separation layer. The image of this card could not be removed even by the use of cellophane tape. In addition, there was no deformation of the card or unevenness of transfer, and furthermore, there were no air bubbles (causing lifting of the layer).
  • the image receiving layer is transfer laminated to a card, so that when compared to the method that an image is formed using conventional printing, it is possible to manufacture cards with original designs more promptly and more inexpensively, and the method of present invention is more suitable for the manufacture of small lots such as one or two cards.
  • the manufacture of cards having a separation layer to protect the image of the card is also simple.
  • the method of the present invention by passing the card and a thermal transfer sheet through a pair of heating and pressing rollers of a laminating machine with a hardness of 70° to 90° while simultaneously heating to a temperature of 130°C to 180°C and applying a pressure of 3 to 15 kg/cm2 to heat and press the thermal transfer sheet and the card, it is possible to have definite transfer of the image receiving layer of the thermal transfer sheet upon which the image is formed, to the card, and it is also possible to manufacture cards having a clear image which does not separate. Still furthermore, if the lamination is performed with a speed of rotation of the pressure rollers in the laminating apparatus of between 0.5 and 1.5 cm/sec., then it is possible to have sufficient heating to heat-and-press laminate the thermal transfer sheet to the card.

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

Procédé de transfert d'images sur une carte, permettant de transférer une image sur la surface d'une carte par fixation sous pression et application de chaleur, utilisant une feuille thermosensible recevant le transfert pourvue d'une couche décollable et d'une couche recevant l'image, qui accepte les colorants transférés à partir d'une feuille de transfert de colorant sur l'une des surfaces d'un substrat. Ce procédé de transfert se caractérise en ce que la feuille thermosensible recevant le transfert et la carte sont superposées, chauffées et comprimées afin d'obtenir la fixation sous pression et par application de chaleur, à des températures comprises entre 130 et 180°C et des pressions allant de 3 à 15 kg/cm2, pendant qu'elles traversent une paire de rouleaux presseurs en caoutchouc d'une dureté variable entre 70 et 90°.

Claims (2)

  1. Procédé pour transférer une image sur une carte, comprenant les étapes suivantes :
       préparer une feuille de transfert thermique comprenant, statifiées dans cet ordre, une couche de base, une couche de séparation et une couche réceptrice d'image pour recevoir des colorants provenant d'une feuille de transfert de colorant,
       former une image par un procédé d'enregistrement par transfert par sublimation sur ladite couche réceptrice d'image prévue dans ladite feuille de transfert thermique,
       placer ladite feuille de transfert thermique sur ladite carte selon une relation de chevauchement,
       faire passer ladite feuille de transfert thermique et ladite carte en chevauchement entre deux cylindres en caoutchouc d'une machine à stratifier, d'une dureté choisie dans la plage de 70° à 90°, les cylindres étant chauffés dans la plage de 130°C à 180°C et poussés l'un vers l'autre sous une pression de 3 à 15 kg/cm², et
       séparer au moins ladite couche de base de ladite couche de séparation si bien que ladite couche réceptrice d'image est stratifiée par transfert sur ladite carte.
  2. Procédé selon la revendication 1, dans lequel ladite étape de passage de ladite feuille de transfert thermique et de ladite carte est accomplie tandis que les cylindres en caoutchouc sont entraînés en rotation à une vitesse de rotation choisie dans la plage de 0,5 à 1,5 cm/s.
EP89907819A 1988-07-01 1989-06-28 Transfert d'images sur une carte Expired - Lifetime EP0404948B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63164239A JP2941813B2 (ja) 1988-07-01 1988-07-01 カード類への画像の転写形成方法
JP164239/88 1988-07-01

Publications (3)

Publication Number Publication Date
EP0404948A1 EP0404948A1 (fr) 1991-01-02
EP0404948A4 EP0404948A4 (en) 1991-04-24
EP0404948B1 true EP0404948B1 (fr) 1994-01-05

Family

ID=15789315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89907819A Expired - Lifetime EP0404948B1 (fr) 1988-07-01 1989-06-28 Transfert d'images sur une carte

Country Status (4)

Country Link
EP (1) EP0404948B1 (fr)
JP (1) JP2941813B2 (fr)
DE (1) DE68912118T2 (fr)
WO (1) WO1990000116A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5278576A (en) * 1990-10-31 1994-01-11 Eastman Kodak Company Intermediate receiver opaque support

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6351200A (ja) * 1986-08-20 1988-03-04 市田　進 転写捺染法
JPS6381093A (ja) * 1986-09-24 1988-04-11 Dainippon Printing Co Ltd 物体上に画像を形成する装置
JPS6387284A (ja) * 1986-10-01 1988-04-18 Dainippon Printing Co Ltd 転写方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52136013A (en) * 1976-05-08 1977-11-14 Kanebo Ltd Continuous stamping apparatus for beltt shaped article
US4354851A (en) * 1977-02-17 1982-10-19 United States Gypsum Company Method for making a decorated, water-resistant, rigid panel and the product made thereby: transfer dye process onto rigid panel
JPS57181869A (en) * 1981-05-01 1982-11-09 Tokai:Kk Transferring method for plastic gas lighter
JPS60236727A (ja) * 1984-05-10 1985-11-25 Gunze Ltd プリントラミネ−ト方法
JPS621922U (fr) * 1985-06-19 1987-01-08
JP2741727B2 (ja) * 1986-09-29 1998-04-22 株式会社日立製作所 熱転写記録装置
JP2576955B2 (ja) * 1986-11-20 1997-01-29 大日本印刷株式会社 熱転写シ−トおよび熱転写方法
JP3196866B2 (ja) * 1993-06-10 2001-08-06 株式会社富士通ゼネラル コンデンサ誘導電動機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6351200A (ja) * 1986-08-20 1988-03-04 市田　進 転写捺染法
JPS6381093A (ja) * 1986-09-24 1988-04-11 Dainippon Printing Co Ltd 物体上に画像を形成する装置
JPS6387284A (ja) * 1986-10-01 1988-04-18 Dainippon Printing Co Ltd 転写方法

Also Published As

Publication number Publication date
WO1990000116A1 (fr) 1990-01-11
EP0404948A1 (fr) 1991-01-02
DE68912118D1 (de) 1994-02-17
DE68912118T2 (de) 1994-06-30
JP2941813B2 (ja) 1999-08-30
JPH0214183A (ja) 1990-01-18
EP0404948A4 (en) 1991-04-24

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