US5006502A
Expired / Lapsed
US
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Heat transfer sheet
Assignee: DAI NIPPON INSATSU A CORP OF JAPAN KK
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Filing: 1988-09-14
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Granted: 1991-04-09
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Expires: 2008-09-14
Abstract
Abstract The heat transfer sheet (10) of the present invention has an image-receiving layer (3) comprising a dye dyeable resin together with a dye layer (2) peelably formed on the surface of a substrate sheet (1), and therefore can form an image of high quality by the heat transfer system without restriction as to the kind of non-transfer material or the surface state.
Inventors
- 👤 Hideo Fujimura
- 👤 Hironobu Hanaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:09
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38207; B41M5/34; B41M5/345; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934; Y10T428/28; Y10T428/2839; Y10T428/2848
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
45 words
A heat transfer sheet comprising: a substrate sheet; an image-receiving layer formed peelably on the surface of said substrate sheet, said image-receiving layer comprising a dye dyeable resin; and a heat migratable dye layer formed on a plane on which said image-receiving layer is formed.
Claim 2
Dependent Claim
45 words
A heat transfer sheet comprising: a substrate sheet; an image-receiving layer formed peelably on the surface of said substrate sheet, said image-receiving layer comprising a dye dyeable resin; and a heat migratable dye layer formed on a plane on which said image-receiving layer is formed.
Claim 3
Dependent Claim
16 words
The heat transfer sheet of claim 1, wherein said image-receiving layer is adjacent said dye layer.
Claim 4
Dependent Claim
25 words
The heat transfer sheet of claim 1, further comprising a polymeric protective layer formed peelably on the plane on which said image-receiving layer is formed.
Claim 5
Dependent Claim
25 words
The heat transfer sheet of claim 1, wherein said image-receiving layer is heat transferable onto a surface of an image-receiving material by heat transfer means.
Claim 6
Dependent Claim
29 words
The heat transfer sheet of claim 4, wherein said heat transfer means includes a heating roller, a heat sealer, a hot stamper, a hot press, or a thermal head.
Claim 7
Dependent Claim
24 words
The heat transfer sheet of claim 1, wherein said dye dyeable resin comprises a resin having a melt flow index of 0.5 to 500.
Claim 8
Dependent Claim
16 words
The heat transfer sheet of claim 1, wherein said dye dyeable resin comprises a release agent.
Claim 9
Dependent Claim
21 words
The heat transfer sheet of claim 1, further comprising a peeling layer provided between said substrate sheet and said image-receiving layer.
Claim 10
Dependent Claim
23 words
The heat transfer sheet of claim 1, wherein the surface of said substrate sheet on which said image-receiving layer is formed is releasable.
Claim 11
Dependent Claim
25 words
The heat transfer sheet of claim 1, further comprising a detection mark for detecting at least one of said image-receiving layers and said dye layer.
Claim 12
Dependent Claim
36 words
The heat transfer sheet of claim 1, wherein said image-receiving layer comprises a layer having a larger peel-off strength from said substrate sheet during non-heating and a smaller peel-off strength from said substrate sheet during heating.
Claim 13
Dependent Claim
20 words
The heat transfer sheet of claim 1, further comprising an adhesive layer formed on the surface of said image-receiving layer.
Claim 14
Dependent Claim
17 words
The heat transfer sheet of claim 1, further comprising a writable layer capable of being written upon.
Claim 15
Dependent Claim
28 words
The heat transfer sheet of claim 1, wherein said dye layer comprises regions with different hues, said hues comprising at least one of yellow, magenta, cyan and black.
Claim 16
Dependent Claim
39 words
The heat transfer sheet of claim 1, wherein said image-receiving layer comprises a vinyl chloride-vinyl acetate copolymer having a glass transition temperature of 50° to 80° C. and a weight average molecular weight of weight of 6000 to 55000.
Claim 17
Dependent Claim
31 words
The heat transfer sheet of claim 15, wherein said vinyl chloride-vinyl acetate copolymer has the following weight ratio: vinyl chloride: 60-95 parts by weight; and vinyl acetate: 5-40 parts by weight.
References Cited (Backward Citations)
US4720480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-08 | 1994-10-08 | 1995-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-08 | 1998-10-08 | 1999-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-08 | 2002-10-08 | 2003-04-09 | $7700.00 | Window Closed / Lapsed |