EP0322771A2
Expired / Lapsed
EP
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Image-receiving sheet for heat sensitive transfer
Assignee: Diafoil Co Ltd
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Filing: 1988-12-22
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Granted: —
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Expires: 2008-12-22
Abstract
Abstract Disclosed herein is an image-receiving sheet for use in heat sensitive transfer, comprising a monoaxially or biaxially stretched polyester film containing minute closed-cells and having an apparent specific gravity of 0.4 to 1.3, an opacifying power of not less than 0.2 and an air leakage index of 50 to 10,000 sec.
Inventors
- 👤 Yoshinori Sato
- 👤 Satoshi Otonari
- 👤 Narihiro Masuda
- 👤 Kazuyuki Akatsu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 00:11
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/41
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
48 words
An image-receiving sheet for use in heat sensitive transfer, comprising a monoaxially or biaxially stretched polyester film containing minute closed-cells and having an apparent specific gravity of 0.4 to 1.3, an opacifying power of not less than 0.2 and an air leakage index of 50 to 10,000 sec.
Claim 2
Dependent Claim
48 words
An image-receiving sheet for use in heat sensitive transfer, comprising a monoaxially or biaxially stretched polyester film containing minute closed-cells and having an apparent specific gravity of 0.4 to 1.3, an opacifying power of not less than 0.2 and an air leakage index of 50 to 10,000 sec.
Claim 3
Dependent Claim
98 words
The image receiving sheet for use in heat sensitive transfer according to Claim 1, wherein the polyester film containing minute closed-cells comprises a polyester which has an intrinsic viscosity of not less than 0.4 and not less than 70 mol% of the constitutional repeating units thereof are ethylene terephthalate units, ethylene-2,6-naphthalate units, butylene terephthalate units or a mixture thereof; and 3 to 50 wt%, based on said polyester, of a crystalline polypropylene which has a melt flow index of from 0.2 to 120 and not less than 95 mol% of the constitutional repeating units thereof are propylene units.
Claim 4
Independent Claim
107 words
A method of heat sensitive transfer recording, which comprises overlaying, with each other, a transfer sheet having a transfer layer containing a dye and an image-receiving sheet; sublimating, gasifying or melting said dye contained in said transfer layer by heating said transfer sheet; and dyeing or transferring said dye to said image-receiving sheet, thereby forming dye-images on said image-receiving sheet, wherein the improvement comprises using, as the image-receiving sheet, a monoaxially or biaxially stretched polyester film containing minute closed-cells and having an apparent specific gravity of 0.4 to 1.3, an opacifying power of not less than 0.2 and an air leakage index of 50 to 10,000 sec.
Claim 5
Independent Claim
107 words
A method of heat sensitive transfer recording, which comprises overlaying, with each other, a transfer sheet having a transfer layer containing a dye and an image-receiving sheet; sublimating, gasifying or melting said dye contained in said transfer layer by heating said transfer sheet; and dyeing or transferring said dye to said image-receiving sheet, thereby forming dye-images on said image-receiving sheet, wherein the improvement comprises using, as the image-receiving sheet, a monoaxially or biaxially stretched polyester film containing minute closed-cells and having an apparent specific gravity of 0.4 to 1.3, an opacifying power of not less than 0.2 and an air leakage index of 50 to 10,000 sec.
Claim 6
Dependent Claim
90 words
The method according to claim 3, wherein said polyester film containing minute closed-cells comprises a polyester which has an intrinsic viscosity of not less than 0.4 and not less than 70 mol% of the constitutional repeating units thereof are ethylene terephthalate units, ethylene-2,6-naphthalate units, butylene terephthalate units or a mixture thereof; and 3 to 50 wt%, based on said polyester, of a crystalline polypropylene which has a melt flow index of from 0.2 to 120 and not less than 95 mol% of the constitutional repeating units thereof are propylene units.
Claim 7
Dependent Claim
51 words
A use of a monoaxially or biaxially stretched polyester film containing minute closed-cells and having an apparent specific gravity of 0.4 to 1.3, an opacifying power of not less than 0.2 and an air leakage index of 50 to 10,000 sec, as an image-receiving sheet for use in heat sensitive transfer.
Claim 8
Dependent Claim
51 words
A use of a monoaxially or biaxially stretched polyester film containing minute closed-cells and having an apparent specific gravity of 0.4 to 1.3, an opacifying power of not less than 0.2 and an air leakage index of 50 to 10,000 sec, as an image-receiving sheet for use in heat sensitive transfer.
Claim 9
Dependent Claim
90 words
The use according to claim 5, wherein said polyester film containing minute closed-cells comprises a polyester which has an intrinsic viscosity of not less than 0.4 and not less than 70 mol% of the constitutional repeating units thereof are ethylene terephthalate units, ethylene-2,6-naphthalate units, butylene terephthalate units or a mixture thereof; and 3 to 50 wt%, based on said polyester, of a crystalline polypropylene which has a melt flow index of from 0.2 to 120 and not less than 95 mol% of the constitutional repeating units thereof are propylene units.
References Cited (Backward Citations)
No citation records indexed.
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