Protective layer transfer sheet

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United States of America Patent

PATENT NO 6616993
APP PUB NO 20020197453A1
SERIAL NO

09794235

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present invention provides a protective layer transfer sheet which, when used to thermally transfer a protective layer onto an image-receiving sheet with an image formed thereon, provides a print that does not cause cracking of the protective layer and, even when housed and stored in a vinyl chloride case containing a plasticizer or the like, does not cause the migration of a dye constituting the image to the case, that is, has excellent fastness properties. In a protective layer transfer sheet 7 comprising a substrate sheet 1, a heat-resistant slip layer 3 provided on one side of the substrate sheet 1, and a thermally transferable protective layer 2 releasably provided on at least a part of the surface of the substrate sheet 1 remote from the heat-resistant slip layer 3, the thermally transferable protective layer 2 contains an epoxy resin and, in addition, contains at least one member selected from the group consisting of a butyral resin, an acrylic resin, and an ultraviolet absorber. By virtue of this construction, a protective layer 2 is strongly adhered onto an image-receiving sheet with an image formed thereon. Further, the protective layer 2 is strong and homogeneous, and, thus, even when the print is housed in a vinyl chloride case, the print does not cause the dye to migrate to the case, that is, has excellent plasticizer resistance.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
DAI NIPPON PRINTING CO LTDJAPAN

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Moriguchi, Satoshi Tokyo-To, JP 8 131
Obonai, Naohiro Tokyo-To, JP 16 51
Saito, Hitoshi Tokyo-To, JP 279 2920
Usuki, Hideki Tokyo-To, JP 21 141

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