US4778729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer sheet
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1987-12-21
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Granted: 1988-10-18
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Expires: 2007-12-21
Abstract
Abstract A heat transfer sheet comprising a base film and a hot melt ink layer formed on one surface of the base film, said hot melt ink layer comprising one or more components which impart filling to the printed areas of a transferable paper during transferring. Another type of a heat transfer sheet comprising a base film, a hot melt ink layer laminated on one surface of the base film, and a filling layer laminated on the hot melt ink layer, said filling layer comprising one or more components which impart filling to the printed areas of a transferable paper during transferring. According to the heat transfer sheets, high quality printing can be attained even at a high speed without any staining.
Inventors
- 👤 Akira Mizobuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:31
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/423; B41M5/426; B41M5/44; B41M5/443; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31551; Y10T428/31565; Y10T428/31652; Y10T428/31663; Y10T428/31725; Y10T428/31768; Y10T428/31786; Y10T428/31801; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935; Y10T428/31938; Y10T428/31971
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
A heat transfer sheet for heat-sensitive printing by means of thermal heads, comprising a base film, a hot melt ink layer formed on the surface of said base film, and a filling layer formed on said hot melt ink layer; said filling layer comprising a fine particle layer of wax.
Claim 2
Dependent Claim
50 words
A heat transfer sheet for heat-sensitive printing by means of thermal heads, comprising a base film, a hot melt ink layer formed on the surface of said base film, and a filling layer formed on said hot melt ink layer; said filling layer comprising a fine particle layer of wax.
Claim 3
Dependent Claim
25 words
A heat transfer sheet according to claim 1, wherein said filling layer is formed by coating the hot melt ink layer with a wax emulsion.
Claim 4
Dependent Claim
52 words
A heat transfer sheet according to claim 1, wherein said wax is selected from the group consisting of microcrystalline wax, carbauba wax, paraffin wax, Fischer-Tropsch wax, low molecular weight polyethylene, Japan wax, bees wax, whale wax, insect wax, wool wax, shellac wax, candelilla wax, montan wax, petrolatum, fatty acid esters and amides.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |