US4981748A
Expired / Lapsed
US
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Heat transfer recording sheet
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1989-02-15
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Granted: 1991-01-01
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Expires: 2009-02-15
Abstract
Abstract A heat transfer recording sheet comprising a base film, a layer of heat transferable coloring material on one side of the base film and a heat resistant layer on the other side of the base film, wherein said heat resistant layer is formed by curing a mixture comprising a compound of the formula: ##STR1## wherein each of R 1 , R 2 , R 3 , R 4 and R 5 is an acryloyl group or a methacryloyl group, and R 6 is an acryloyl group, a methacryloyl group, an alkyloyl group or a hydrogen atom, and a compound of the formula: ##STR2## wherein each of R 7 and R 8 is an acryloyl group or a methacryloyl group, each of R 9 and R 10 is a hydrogen atom, an alkyl group or an aryl group, and each of rings A and B is a benzene ring which may have a lower alkyl group and/or a halogen atom as a substituent, and n is an integer of from 1 to 9, and/or a compound of the formula: ##STR3## wherein each of R 11 , R 12 and R 13 is an acryloyl group or a methacryloyl group, and m is an integer of from 0 to 5.
Inventors
- 👤 Yutaka Kawai
- 👤 Yukio Tsuge
- 👤 Yukichi Murata
- 👤 Masahiro Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:27
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/405; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/25; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266; Y10T428/31504; Y10T428/31786; Y10T428/31855
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
221 words
A heat transfer recording sheet comprising a base film, a layer of heat transferable coloring material on one side of the base film and a heat resistant layer on the other side of the base film, wherein said heat resistant layer is formed by curing a mixture comprising a compound of the formula: ##STR11## wherein each of R 1 , R 2 , R 3 , R 4 and R 5 is an acryloyl group or a methacryloyl group, and R 6 is an acryloyl group, a methacryloyl group, an alkyloyl group or a hydrogen atom, and a compound of the formula: ##STR12## wherein each of R 7 and R 8 is an acryloyl group or a methacryloyl group, each of R 9 and R 10 is a hydrogen atom, an alkyl group or an aryl group, and each of rings A and B is a benzene ring which may have a lower alkyl group and/or a halogen atom as a substituent, and n is an integer of from 1 to 9,and together with or as a replacement for the compound of the formula of (II) a compound of the formula: ##STR13## wherein each of R 11 , R 12 and R 13 is an acryloyl group or a methacryloyl group, and m is an integer of from 0 to 5.
Claim 2
Dependent Claim
221 words
A heat transfer recording sheet comprising a base film, a layer of heat transferable coloring material on one side of the base film and a heat resistant layer on the other side of the base film, wherein said heat resistant layer is formed by curing a mixture comprising a compound of the formula: ##STR11## wherein each of R 1 , R 2 , R 3 , R 4 and R 5 is an acryloyl group or a methacryloyl group, and R 6 is an acryloyl group, a methacryloyl group, an alkyloyl group or a hydrogen atom, and a compound of the formula: ##STR12## wherein each of R 7 and R 8 is an acryloyl group or a methacryloyl group, each of R 9 and R 10 is a hydrogen atom, an alkyl group or an aryl group, and each of rings A and B is a benzene ring which may have a lower alkyl group and/or a halogen atom as a substituent, and n is an integer of from 1 to 9,and together with or as a replacement for the compound of the formula of (II) a compound of the formula: ##STR13## wherein each of R 11 , R 12 and R 13 is an acryloyl group or a methacryloyl group, and m is an integer of from 0 to 5.
Claim 3
Dependent Claim
45 words
The heat transfer recording sheet according to claim 1, wherein the weight ratio in the mixture of the total amount of the compounds of the formulas II and III to the compound of the formula I is within a range of from 0.1 to 3.
Claim 4
Dependent Claim
23 words
The heat transfer recording sheet according to claim 1, wherein the heat resistant layer has a thickness of from 0.1 to 10 μm.
Claim 5
Dependent Claim
27 words
The heat transfer recording sheet according to claim 1, wherein the base film is a polyethylene terephthalate film having a thickness of from 1 to 30 μm.
Claim 6
Dependent Claim
26 words
The heat transfer recording sheet according to claim 1, wherein the layer of heat transferable coloring material has a thickness of from 0.1 to 5 μm.
Claim 7
Dependent Claim
19 words
The heat transfer recording sheet according to claim 1, wherein the heat resistant layer contains heat resistant fine particles.
Claim 8
Dependent Claim
17 words
The heat transfer recording sheet according to claim 1, wherein the heat resistant layer contains a lubricant.
Claim 9
Dependent Claim
17 words
The heat transfer recording sheet according to claim 1, wherein the heat resistant layer contains a surfactant.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-31 | 1994-07-02 | 1995-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-31 | 1998-07-02 | 1999-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-31 | 2002-07-02 | 2003-01-01 | $7700.00 | Window Closed / Lapsed |