US5264271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrothermal transfer sheet
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1992-02-25
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Granted: 1993-11-23
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Expires: 2012-02-25
Abstract
Abstract An electrothermal transfer sheet whose resistor layer is free from heat shrinkage and is excellent in flexibility and adhesion to a substrate sheet can be produced with high productivity. The transfer sheet includes a substrate sheet, a heat-transferable dye layer formed on one surface of the substrate sheet, and a resistor layer capable of generating heat when an electric current is applied thereto from an electrode head, formed on the other surface of the substrate sheet. The resistor layer includes (a) a binder resin, (b) an electrically conductive filler and (c) a crosslinking agent which includes a mixture of a thermosetting crosslinking agent and an ionizing-radiation-curable crosslinking agent.
Inventors
- 👤 Naoto Satake
- 👤 Tatsuya Kita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:48
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/3825; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/26; Y10T428/266; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31678; Y10T428/31801
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
An electrothermal transfer sheet comprising: a substrate sheet having a thickness of about 0.5-50 μm; a heat-transferable dye layer formed on one surface of the substrate sheet, said heat-transferable dye layer having a thickness of about 0.2-5.0 μm; and a resistor layer capable of generating heat when an electric current is applied thereto from an electrode head, formed on the other surface of the substrate sheet, said resistor layer having a thickness of about 1-10 μm and comprising (a) a binder resin, (b) an electrically conductive filler, and (c) a crosslinking agent which comprises a mixture of (i) a thermosetting crosslinking agent and (ii) an ionizing-radiation-curable crosslinking agent comprising an ionizing-radiation-curable reactive monomer present in an amount of 5 to 30 parts by weight per 100 parts by weight of the binder resin.
Claim 2
Dependent Claim
133 words
An electrothermal transfer sheet comprising: a substrate sheet having a thickness of about 0.5-50 μm; a heat-transferable dye layer formed on one surface of the substrate sheet, said heat-transferable dye layer having a thickness of about 0.2-5.0 μm; and a resistor layer capable of generating heat when an electric current is applied thereto from an electrode head, formed on the other surface of the substrate sheet, said resistor layer having a thickness of about 1-10 μm and comprising (a) a binder resin, (b) an electrically conductive filler, and (c) a crosslinking agent which comprises a mixture of (i) a thermosetting crosslinking agent and (ii) an ionizing-radiation-curable crosslinking agent comprising an ionizing-radiation-curable reactive monomer present in an amount of 5 to 30 parts by weight per 100 parts by weight of the binder resin.
Claim 3
Dependent Claim
36 words
An electrothermal transfer sheet as set forth in claim 1, wherein the thermosetting crosslinking agent comprises polyisocyanate in an amount from 1 to 20 parts by weight per 100 parts by weight of the binder resin.
Claim 4
Dependent Claim
49 words
An electrothermal transfer sheet as set forth in claim 1, wherein the crosslinking agent (c) comprises a thermosetting crosslinking agent selected from the group consisting of organometal compounds and silane compounds, and an ionizing-radiation-curable crosslinking agent selected from the group consisting of oligomers and macromers composed of reactive monomers.
Claim 5
Dependent Claim
15 words
A sublimation transfer sheet comprising the electrothermal transfer sheet as set forth in claim 1.
Claim 6
Dependent Claim
15 words
A heat-fusion transfer sheet comprising the electrothermal transfer sheet as set forth in claim 1.
References Cited (Backward Citations)
US4684563A
Cited
US4913975A
Cited
JPS63249689A
Cited
JPS6490793A
Cited
JPH0234394A
Cited
US4963522A
Cited
JPH0245190A
Cited
US5187002A
Cited
JPH02283495A
Cited
JPH02188292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |