US4474844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer recording medium
Assignee: Fujicopian Co Ltd
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Filing: 1982-12-20
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Granted: 1984-10-02
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Expires: 2002-12-20
Abstract
Abstract A heat transfer recording medium which comprises tissue paper having thereon an ink layer comprised of material fluidizable or sublimatable upon the application of heat. The tissue paper has a thickness of 5 to 25 mu m, a density of 0.8 to 1.45 g/cm3, a smoothness of 200 to 20,000 seconds (determined by the Oken type measurement) and a water content adjusted to 6 to 13 wt % after forming the ink layer thereon. The medium does not generate puckers when employed in a transfer type heat sensitive recording apparatus under high temperature and humidity conditions.
Inventors
- 👤 Takashi Omori
- 👤 Haruhiko Moriguchi
- 👤 Tadao Seto
- 👤 Yoshikazu Shimazaki
- 👤 Hiromitsu Matsuba
- 👤 Toshiharu Inui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:37
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/41; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/31; Y10T428/31504; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
81 words
A heat transfer recording medium, comprising: a base material comprised of tissue paper having a thickness of 5 to 25 μm, a density of 0.8 to 1.45 g/cm 3 ; and an ink layer formed on a surface of the base material, the ink layer being comprised of material fluidizable or sublimatable upon the application of heat, wherein after the application of the ink layer to the base material, the water content of the base material was 6 to 13 wt%.
Claim 2
Dependent Claim
81 words
A heat transfer recording medium, comprising: a base material comprised of tissue paper having a thickness of 5 to 25 μm, a density of 0.8 to 1.45 g/cm 3 ; and an ink layer formed on a surface of the base material, the ink layer being comprised of material fluidizable or sublimatable upon the application of heat, wherein after the application of the ink layer to the base material, the water content of the base material was 6 to 13 wt%.
Claim 3
Dependent Claim
29 words
A heat transfer recording material as claimed in claim 1, wherein the base material has a smoothness of from 200 to 20,000 seconds determined by the Oken type measurement.
Claim 4
Dependent Claim
26 words
A heat transfer recording medium as claimed in claim 1, wherein the base material has a thickness within the range of from 7 to 18 μm.
Claim 5
Dependent Claim
28 words
A heat transfer recording medium as claimed in claim 1, wherein the base material has a density within the range of from 0.9 to 1.4 g/cm 3 .
Claim 6
Dependent Claim
30 words
A heat transfer recording medium as claimed in claim 1, wherein the water content of the base material after the application of the ink layer is 8 to 11 wt%.
Claim 7
Dependent Claim
22 words
A heat transfer recording medium as claimed in claim 1, wherein the ink layer has a thickness of 2 to 15 μm.
References Cited (Backward Citations)
US3453648A
Cited
US3596055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |