Cover film for color hard copy printing paper
First Claim
1. 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 capable of being melted and bonded to a surface of a printing paper by heating.
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Accused Products
Abstract
The present invention relates to a cover film for a color hard copy printing paper by which a colorless and transparent protective layer can be formed on a surface of a printing paper on which a color-print is made. The cover film for a color hard copy printing paper according to the present invention comprises a heat-resistant base and a cover material layer including a colorless and transparent ultraviolet ray shielding layer which is formed on the heat-resistant base, has no adhesive property for the heat-resistant base and is melted and transferred to a surface of a printing paper by heating. According to the cover film for a color hard copy printing paper, it is possible to form with ease a protective layer having small curl and high color fading protection property on a surface of a color-copied printing paper.
68 Citations
6 Claims
- 1. 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 capable of being melted and bonded to a surface of a printing paper by heating.
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2. 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 capable of being 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.
Specification