EP0980765B1 - Thermische Übertragungsschicht für das Erzeugen von Bildern mit metallischem Glanz - Google Patents

Thermische Übertragungsschicht für das Erzeugen von Bildern mit metallischem Glanz Download PDF

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Publication number
EP0980765B1
EP0980765B1 EP19990116348 EP99116348A EP0980765B1 EP 0980765 B1 EP0980765 B1 EP 0980765B1 EP 19990116348 EP19990116348 EP 19990116348 EP 99116348 A EP99116348 A EP 99116348A EP 0980765 B1 EP0980765 B1 EP 0980765B1
Authority
EP
European Patent Office
Prior art keywords
layer
foundation
thermal transfer
metal deposition
resin
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
EP19990116348
Other languages
English (en)
French (fr)
Other versions
EP0980765A3 (de
EP0980765A2 (de
Inventor
Jun c/o Fujicopian Co. Ltd. Sogabe
Yuuichi c/o Fujicopian Co. Ltd. Miyakusa
Yoshiyuki c/oAlps Electric Co. Ltd. Asabe
Yasutoshi c/oAlps Electric Co. Ltd. Inoue
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.)
Fujicopian Co Ltd
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Fuji Kagakushi Kogyo Co Ltd
Fujicopian 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 Alps Electric Co Ltd, Fuji Kagakushi Kogyo Co Ltd, Fujicopian Co Ltd filed Critical Alps Electric Co Ltd
Publication of EP0980765A2 publication Critical patent/EP0980765A2/de
Publication of EP0980765A3 publication Critical patent/EP0980765A3/de
Application granted granted Critical
Publication of EP0980765B1 publication Critical patent/EP0980765B1/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
    • 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
    • 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

Definitions

  • the present invention relates to a thermal transfer recording medium for use in word processors, facsimile terminal equipment, and the like. More particularly, the invention relates to a thermal transfer recording medium containing a metal deposition layer used for forming printed images with metallic luster utilizing a thermal transfer mechanism.
  • metallic thermal transfer recording media conventionally used forming printed images with metallic luster have a basic structure comprising a foundation and provided on one side of the foundation, a release layer, a heat resistant layer for metal deposition, a metal deposition layer and an adhesive layer in this order from the foundation side.
  • the release layer is composed of a wax as a main component from the viewpoint of the transfer performance when thermally transferring.
  • the thickness of the release layer is usually in the range of 0.5 to 5 ⁇ m.
  • the heated portion of the release layer having a large thickness becomes a melt having a low viscosity between the foundation and the heat resistant layer for metal deposition, so that a portion wherein the mechanical strength is very small is formed between the foundation and the heat resistant layer supporting the metal deposition layer.
  • the heat resistant layer for metal deposition cannot have a so great strength to ensure a transfer sensitivity. Consequently, the heat resistant layer at that portion cannot withstand the pressure applied when transferring and the metal deposition layer is collapsed, resulting in printed images with poor metallic luster.
  • the present invention provides a thermal transfer recording medium for forming a printed image with metallic luster, comprising a foundation, and provided on one side of the foundation, a laminate transfer layer comprising at least a release layer, a heat-resistant layer for metal deposition, a metal deposition layer and an adhesive layer in this order from the foundation side, the release layer having a thickness of 0.05 to 0.50 ⁇ m and a softening point not lower than 100°C, the peel strength of the laminate transfer layer from the foundation according to T-mode peeling being not larger than 50 gf/12.7 mm.
  • the release layer comprises as a main component at least one resin selected from the group consisting of a petroleum resin, a rosin resin, a terpene resin and a styrene resin.
  • the peel strength between the foundation and the laminate transfer layer comprising at least a release layer, a heat-resistant layer for metal deposition, a metal deposition layer and an adhesive layer formed on the foundation in this order is a value measured by means of a tensile tester (HEIDON-14 made by Sinto . Kagaku Kabushiki Kaisha) according to T-mode peeling (90 degree peeling) at a peeling speed of 250 mm/second in an atmosphere of 25°C and 60 % RH with respect to a test piece having width of 12.7 mm.
  • HEIDON-14 made by Sinto . Kagaku Kabushiki Kaisha
  • T-mode peeling 90 degree peeling
  • the thermal transfer recording medium of the present invention has a basic structure comprising a foundation, and provided on one side of the foundation, a laminate transfer layer comprising a release layer, a heat resistant layer for metal deposition, a metal deposition layer and an adhesive layer in this order from the foundation side.
  • the present invention is characterized by using as the release layer a layer having a thickness of 0.05 to 0.50 ⁇ m and a softening point not lower than 100°C.
  • a release layer By using such a release layer, the strength supporting the heat resistant layer, which in turn supports the metal deposition layer, at the portion heated when transferring can be ensured, resulting in printed images with metallic luster of high level.
  • the peel strength of the laminate transfer layer from the foundation according to T-mode peeling to a value not larger than 50 gf/12.7 mm, the transferability is not degraded even when the release layer is composed of a resin.
  • the foundation useful in the present invention is a polyethylene terephthalate film having a thickness of 2 to 6 ⁇ m from the viewpoints of durability, heat conduction and cost.
  • a polyethylene terephthalate film having a thickness of 4 to 6 ⁇ m is particularly preferable from the viewpoint of the mechanical strength required when transferring. It is preferable to provide a sticking preventive layer on the backside of the foundation in order to prevent the foundation from sticking to a recording head.
  • the materials for the release layer which is an important feature of the present invention are preferably resins which have a softening point not lower than 100°C and show a small adhesive strength to the foundation.
  • the main component for the release layer at least one thermoplastic resin selected from the group consisting of a petroleum resin, a rosin resin, a terpene resin and a styrene resin is most suitable.
  • the content of the resin as the main component in the release layer is preferably not less than 60 % by weight.
  • the softening point of the release layer is preferably not higher than 180°C.
  • thermoplastic resin other than the above-mentioned may be added to the release layer to improve the handling property of the recording medium as an ink ribbon (e.g. prevention of flaking of the transfer layer) by increasing the adhesive strength of the release layer to the foundation.
  • the other thermoplastic resins include olefin resins such as ethylene-vinyl acetate copolymers, polyamide resins, polyester resins, and natural rubber. These resins may be used either alone or in combination.
  • the release layer is required to be a thin film so that the action of supporting the metal deposition layer by the foundation through the release layer is not degraded.
  • the thickness of the release layer is preferably from 0.05 to 0.5 ⁇ m.
  • the heat resistant layer for metal deposition in the present invention functions as a layer which has the heat resistance required for metal deposition and supports the formed metal deposition layer.
  • the heat resistant layer is composed. of a thermoplastic resin (inclusive of elastomer) as a main component.
  • thermoplastic resins include polyester resins, polyamide resins, polyurethane resins, (meth)acrylic resins and ionomer resins. These resins may be used either alone or in combination.
  • the heat resistant layer preferably has a softening point not lower than 100°C from the viewpoint of the heat resistant required for metal deposition.
  • the thickness of the heat resistant layer for metal deposition is preferably in the range of 0.2 to 1.0 ⁇ m from the viewpoint of thermal transferability.
  • the thickness of the heat resistant layer is less than 0.2 ⁇ m, the desired mechanical strength cannot be ensured so that the metal deposition layer is prone to be collapsed when transferring.
  • the thickness of the heat resistant layer is more than 1.0 ⁇ m, no printed images with high-definition are prone to be obtained.
  • Printed images with a metallic luster in a variety of colors can be obtained by coloring the heat resistant layer.
  • a dye is preferably used to ensure the transparency of the heat resistant layer.
  • a pigment which is highly dispersed can also be used.
  • metals for the metal deposition layer are aluminum, zinc, tin, silver, gold, platinum, and the like. Usually aluminum is preferred.
  • the metal deposition layer can be formed by a physical deposition method such as vacuum deposition, sputtering or iron plating, or chemical deposition method. From the viewpoint of ensuring metallic luster of high level, the thickness of the metal deposition layer is preferably in the range of 10 to 100 nm, especially 20 to 40 nm.
  • the adhesive layer is composed of an adhesive resin as a main component.
  • the adhesive resins are polyester resins, polyamide resins, polyurethane resins, ethylene-vinyl acetate copolymers, rosin resins, terpene resins and phenol resins. These adhesive resins may be used either alone or in combination.
  • the adhesive layer preferably has a softening point of 50° to 120°C to obtain superior transferability.
  • the adhesive layer may be incorporated with a small amount of a particulate material or a lubricating material to prevent blocking or smudging.
  • the thickness of the adhesive layer is preferably from 0.5 to 2.0 ⁇ m.
  • a 4.5 ⁇ m-thick polyethylene terephthalate film having a 0.2 ⁇ m-thick sticking-preventive layer composed of a silicone resin on one side thereof was used as a foundation.
  • the below-mentioned layers were successively formed on the opposite side of the foundation with respect to the sticking-preventive layer.
  • Coating liquid for release layer Component Parts by weight Petroleum resin(softening point 125°C) 9 Ethylene-vinyl acetate copolymer (softening point 60°C) 1 Toluene 90 Total 100
  • Coating liquid for heat resistant layer Component Parts by weight Acrylic resin(softening point 120°C) 8 Valifast Yellow 4120 (yellow dye made by Orient Kagaku Kabushiki Kaisha) 2 Methyl ethyl ketone 90 Total 100
  • the above coating liquid was applied onto the release layer and dried to form a 0.7 ⁇ m-thick heat resistant layer for metal deposition.
  • Aluminum was deposited onto the heat resistant layer for metal deposition by a vacuum deposition method to form an aluminum deposition layer having a thickness of 20 nm.
  • Coating liquid for adhesive layer Component Parts by weight Phenol resin(softening point 90°C) 9.5 Silica(average particle size 1.0 ⁇ m) 0.5 Isopropyl alcohol 90 Total 100
  • the above coating liquid was applied onto the aluminum deposition layer and dried to form a 0.5 ⁇ m-thick adhesive layer.
  • the peel strength of the laminate transfer layer from the foundation according to T-mode peeling was 19 gf/12.7 mm.
  • printing was performed under the below-mentioned printing conditions to form printed images. The transferability was evaluated and the gloss of the printed image was measured.
  • the transferability was evaluated by observing whether a solid-printed image containing no voids was obtained or not.
  • the gloss of the solid-printed image was measured by means of a glossmeter (digital glossmeter GM-260 made by Kabushiki Kaisha Murakami Shikisai Gijutsu Kenkyusho).
  • the metallic thermal transfer recording medium exhibited superior transferability to provide solid-printed images containing no voids and having high metallic luster with a gloss of 500.
  • the metallic thermal transfer recording medium of the present invention exhibits superior transferability and provides printed image with metallic luster of high level according to the thermal transfer mechanism.
  • a thermal transfer recording medium for forming a printed image with metallic luster of high level with superior transferability according to a thermal transfer mechanism which comprises a foundation, and provided on one side of the foundation, a laminate transfer layer comprising at least a release layer, a heat-resistant layer for metal deposition, a metal deposition layer and an adhesive layer in this order from the foundation side, the release layer having a thickness of 0.05 to 0.50 ⁇ m and a softening point not lower than 100°C, the peel strength of the laminate transfer layer from the foundation according to T-mode peeling being not larger than 50 gf/12.7 mm.

Landscapes

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

Claims (2)

  1. Aufzeichnungsmedium für thermische Übertragung zur Erzeugung eines gedruckten Bildes mit metallischem Glanz, das eine Grundlage und ein auf einer Seite der Grundlage bereitgestelltes Übertragungsschichtlaminat umfasst, das in dieser Reihenfolge von der Seite der Grundlage her wenigstens eine Ablöseschicht, eine hitzebeständige Schicht für Metallabscheidung, eine Metallabscheidungsschicht und eine Klebeschicht umfasst, wobei die Ablöseschicht eine Dicke von 0,05 bis 0,50 µm und einen Erweichungspunkt von nicht niedriger als 100°C aufweist und die Ablösefestigkeit des Übertragungsschichtlaminats von der Grundlage gemäß T-Modus-Ablösen nicht größer als 50 gf/12,7 mm ist.
  2. Aufzeichnungsmedium für thermische Übertragung nach Anspruch 1, wobei die Ablöseschicht als eine Hauptkomponente wenigstens ein Harz ausgewählt aus der Gruppe bestehend aus einem Petroleumharz, einem Rosinharz, einem Terpenharz und einem Styrolharz umfasst.
EP19990116348 1998-08-20 1999-08-19 Thermische Übertragungsschicht für das Erzeugen von Bildern mit metallischem Glanz Expired - Lifetime EP0980765B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP23427498A JP4155629B2 (ja) 1998-08-20 1998-08-20 メタリック熱転写記録媒体
JP23427498 1998-08-20

Publications (3)

Publication Number Publication Date
EP0980765A2 EP0980765A2 (de) 2000-02-23
EP0980765A3 EP0980765A3 (de) 2000-11-02
EP0980765B1 true EP0980765B1 (de) 2004-04-07

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EP19990116348 Expired - Lifetime EP0980765B1 (de) 1998-08-20 1999-08-19 Thermische Übertragungsschicht für das Erzeugen von Bildern mit metallischem Glanz

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EP (1) EP0980765B1 (de)
JP (1) JP4155629B2 (de)
DE (1) DE69916189T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101879819B (zh) * 2010-06-13 2011-11-09 高邮市卫星卷烟材料有限公司 一种烫金电化铝的生产方法
CN102658742B (zh) * 2012-05-11 2014-07-16 保定乐凯新材料股份有限公司 一种适用于冷烫技术的转印型装饰膜
JP6432486B2 (ja) * 2015-11-04 2018-12-05 ブラザー工業株式会社 熱転写インクリボン、リボンカートリッジ、及び印刷装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07314908A (ja) * 1994-05-20 1995-12-05 Dainippon Printing Co Ltd 白色熱転写シート
EP0812701B1 (de) * 1996-06-10 1998-12-02 Dai Nippon Printing Co., Ltd. Thermische Übertragungsschicht für das Erzeugen von Bildern mit metallischem Glanz

Also Published As

Publication number Publication date
DE69916189D1 (de) 2004-05-13
JP2000062331A (ja) 2000-02-29
EP0980765A3 (de) 2000-11-02
EP0980765A2 (de) 2000-02-23
JP4155629B2 (ja) 2008-09-24
DE69916189T2 (de) 2004-09-09

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