Patent US5221921A successfully refreshed from Google Patents.
Patent US4965132A successfully refreshed from Google Patents.
US4965132A
Expired / Lapsed
US
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Heat transfer sheet
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1989-06-12
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Granted: 1990-10-23
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Expires: 2009-06-12
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
- 👤 Yoshiaki Hida
- 👤 Shigeki Umise
- 👤 Kyoichi Yamamoto
- 👤 Kyohei Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:24
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: 2
Claim 1
Independent Claim
158 words
A hot melt heat transfer sheet for heat-sensitive printing means of thermal heads, comprising a base film, a substantially smooth antisticking layer formed on the thermal head-contacting surface of said base film, and a hot melt ink layer formed on the opposite surface of said base film, said antisticking layer preventing sticking of the heat sheet to the thermal heads and containing an antistatic agent selected from the group consisting of: cationic antistatic agents having cationic groups selected from a quaternary ammonium salt, a pyridinium salt and primary, secondary or tertiary amino groups; anionic antistatic agents having anionic groups selected from sulfonate and sulfate; amphoteric antistatic agents of amino acid type or aminosulfate type; nonionic antistatic agents of amino-alcohol type glycerin type, or polyethylene glycol type; polymeric antistatic agents obtained by polymerizing the antistatic agents described above; polymerizable antistatic agents of a radiation polymerizable monomer and oligomer having a tertiary amino or quaternary ammonium group and carbon black.
Claim 2
Dependent Claim
158 words
A hot melt heat transfer sheet for heat-sensitive printing means of thermal heads, comprising a base film, a substantially smooth antisticking layer formed on the thermal head-contacting surface of said base film, and a hot melt ink layer formed on the opposite surface of said base film, said antisticking layer preventing sticking of the heat sheet to the thermal heads and containing an antistatic agent selected from the group consisting of: cationic antistatic agents having cationic groups selected from a quaternary ammonium salt, a pyridinium salt and primary, secondary or tertiary amino groups; anionic antistatic agents having anionic groups selected from sulfonate and sulfate; amphoteric antistatic agents of amino acid type or aminosulfate type; nonionic antistatic agents of amino-alcohol type glycerin type, or polyethylene glycol type; polymeric antistatic agents obtained by polymerizing the antistatic agents described above; polymerizable antistatic agents of a radiation polymerizable monomer and oligomer having a tertiary amino or quaternary ammonium group and carbon black.
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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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |