EP0103024A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of making a colour hard copy
Assignee: Sony Corp
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Filing: 1983-03-01
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Granted: —
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Expires: 2003-03-01
Abstract
Abstract A covering film for color hard copy paper, which can form a colorless, transparent protective layer on the surface of colorprinted paper and which comprises a heat-resistant base having provided thereon a covering material layer containing a colorless, transparent, UV-shielding layer not adhering to the base and capable of being melt-bound to the surface of the copy paper by heat. This film facilitates formation of a protective layer which curls less and shows a high discoloration-preventing effect on the surface of color- copied paper.
Inventors
- 👤 Naotake Kobayashi
- 👤 Tetsuya Abe
- 👤 Yoshio Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 09:27
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/46; B41M5/382; B41M5/38264; B41M7/00; B41M7/0027; G; G03; G03C; G03C11/00; G03C11/08; G03C11/10; B41M5/34; B41M5/345; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10S430/00; Y10S430/162; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31786; Y10T428/3179; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31935; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
A cover film for a color hard copy printing paper comprising a heat-resistant base and a cover material layer including a colorless and transparent ultraviolet ray shielding layer which is formed on said heat-resistant base and has no adhesive property upon heating for said heat-resistant base and is melted and bonded to a surface of a printing paper by heating.
Claim 2
Dependent Claim
60 words
A cover film for a color hard copy printing paper comprising a heat-resistant base and a cover material layer including a colorless and transparent ultraviolet ray shielding layer which is formed on said heat-resistant base and has no adhesive property upon heating for said heat-resistant base and is melted and bonded to a surface of a printing paper by heating.
Claim 3
Dependent Claim
78 words
A cover film for a color hard copy printing paper comprising a heat-resistant base and a cover material layer including a colorless and transparent ultraviolet ray shielding layer which is formed on said heat-resistant base and has no adhesive property upon heating for said heat-resistant base and is melted and bonded by heating to a surface of a printing paper on which a color picture is formed by the transfer of sublimation dyes of at least three colors.
Claim 4
Dependent Claim
78 words
A cover film for a color hard copy printing paper comprising a heat-resistant base and a cover material layer including a colorless and transparent ultraviolet ray shielding layer which is formed on said heat-resistant base and has no adhesive property upon heating for said heat-resistant base and is melted and bonded by heating to a surface of a printing paper on which a color picture is formed by the transfer of sublimation dyes of at least three colors.
Claim 5
Dependent Claim
51 words
A cover film for a color hard copy printing paper according to claim 1 or 2, wherein said heat-resistant base is a heat resistant plastic film selected from polyester, polycarbonate and polyacrylate or a heat-resistant plastic film selected from polyester, polycarbonate and polyacrylate and formed on a surface of a paper.
Claim 6
Dependent Claim
29 words
A cover film for a color hard copy printing paper according to claim 1 or 2, wherein said cover material layer has a thickness of 1 to 20 p.
Claim 7
Dependent Claim
29 words
A cover film for a color hard copy printing paper according to claim 1 or 2, wherein a surface of said heat-resistant base is subjected to a peeling-off treatment.
Claim 8
Dependent Claim
37 words
A cover film for a color hard copy printing paper according to claim 1 or 2, wherein said ultraviolet ray shielding layer has an ultraviolet ray absorbent selected from benzophenon system, benzotriazole system or salicylic acid derivative.
References Cited (Backward Citations)
No citation records indexed.
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