US4786629A
Expired / Lapsed
US
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Heat-sensitive recording material
Assignee: Fujifilm Holdings Corp
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Filing: 1987-09-18
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Granted: 1988-11-22
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Expires: 2007-09-18
Abstract
Abstract A heat-sensitive recording material comprising a support provided thereon a heat-sensitive color forming layer comprising an electron donating dye precursor and an electron accepting compound, wherein the support has an oil absorption degree defined according to JIS-P8130 of 10 seconds or less and heat-fusible components contained in the heat-sensitive color forming layer have a fused viscosity at 150° C. of 10 cp or less.
Inventors
- 👤 Hiroshi Kawakami
- 👤 Akira Igarashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:03
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/30; B41M5/337; B41M5/3377; B41M5/41; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
64 words
A heat-sensitive recording material comprising a support provided thereon a heat-sensitive color forming layer comprising an electron donating dye precursor and an electron accepting compound, wherein said support has an oil absorption degree defined according to JIS-P8130 of 10 seconds or less and heat-fusible components contained in said heat-sensitive color forming layer have a fused viscosity at 150° C. of 10 cp or less.
Claim 2
Dependent Claim
64 words
A heat-sensitive recording material comprising a support provided thereon a heat-sensitive color forming layer comprising an electron donating dye precursor and an electron accepting compound, wherein said support has an oil absorption degree defined according to JIS-P8130 of 10 seconds or less and heat-fusible components contained in said heat-sensitive color forming layer have a fused viscosity at 150° C. of 10 cp or less.
Claim 3
Dependent Claim
26 words
A heat-sensitive recording material as claimed in claim 1, wherein said support has an oil absorption degree defined according to JIS-P8130 of 8 seconds or less.
Claim 4
Dependent Claim
25 words
A heat-sensitive recording material as claimed in claim 2, wherein said heat-fusable components have a fused viscosity at 150° C. of 8 cp or less.
Claim 5
Dependent Claim
25 words
A heat-sensitive recording material as claimed in claim 1, wherein said heat-fusible components have a fused viscosity at 150° C. of 8 cp or less.
Claim 6
Dependent Claim
38 words
A heat-sensitive recording material as claimed in claim 1, wherein a high oil absorbent pigment having an oil absorption degree defined according to JIS-K5101 of 40 cc/100 g or more is incorporated in or coated on said support.
Claim 7
Dependent Claim
40 words
A heat-sensitive recording material as claimed in claim 1, wherein a sensitizer containing at least one ether bond in the molecule and having a melting point of from 70 to 150° C. is incorporated in said heat-sensitive color forming layer.
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) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |