US4751175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat developable color light-sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1987-03-06
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Granted: 1988-06-14
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Expires: 2007-03-06
Abstract
Abstract A heat developable color light-sensitive material is disclosed, which comprises a support having provided thereon at least a light-sensitive silver halide emulsion, a binder, and a compound having a dye moiety within the molecule and which is capable of releasing, upon reduction of light-sensitive silver halide to silver at elevated temperatures, said dye moiety corresponding to or inversely corresponding to the reduction to form a dye different from said compound in terms of diffusibility, wherein said light-sensitive silver halide emulsion is prepared by forming silver halide grains in the presence of a sensitizing dye.
Inventors
- 👤 Yasuo Aotsuka
- 👤 Takanori Hioki
- 👤 Kiyohiko Yamamuro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:18
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49818; G03C8/00; G03C8/40; G03C8/4013; G03C8/404
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
A heat developable color light-sensitive material, comprising a support having provided thereon at least a light-sensitive silver halide emulsion, a hydrophilic binder, and a compound having a dye moiety within the molecule and which is capable of releasing, upon reduction of light-sensitive silver halide to silver at elevated temperatures, said dye moiety corresponding to or inversely corresponding to the reduction to form a dye different from said compound in terms of diffusibility, wherein said light-sensitive silver halide emulsion is prepared by forming silver halide grains in the presence of a spectral sensitizing dye.
Claim 2
Dependent Claim
93 words
A heat developable color light-sensitive material, comprising a support having provided thereon at least a light-sensitive silver halide emulsion, a hydrophilic binder, and a compound having a dye moiety within the molecule and which is capable of releasing, upon reduction of light-sensitive silver halide to silver at elevated temperatures, said dye moiety corresponding to or inversely corresponding to the reduction to form a dye different from said compound in terms of diffusibility, wherein said light-sensitive silver halide emulsion is prepared by forming silver halide grains in the presence of a spectral sensitizing dye.
Claim 3
Dependent Claim
31 words
The heat developable color light-sensitive material as claimed in claim 1, wherein said sensitizing dye is employed in an amount of 0.001 g to 20 g per 100 g of silver.
Claim 4
Dependent Claim
31 words
The heat developable color light-sensitive material as claimed in claim 2, wherein said sensitizing dye is employed in an amount of 0.1 g to 2 g per 100 g of silver.
Claim 5
Dependent Claim
32 words
The heat developable color light-sensitive material as claimed in claim 1, wherein the amount of light-sensitive silver halide is coated in a silver amount of 1 mg to 100 g/m 2 .
Claim 6
Dependent Claim
32 words
The heat developable color light-sensitive material as claimed in claim 4, wherein the amount of light-sensitive silver halide is coated in a silver amount of 10 mg to 50 g/m 2 .
Claim 7
Dependent Claim
31 words
The heat developable color light-sensitive material as claimed in claim 1, wherein said binder is a hydrophilic binder selected from the group consisting of proteins, cellulose derivatives, polysaccharides and synthetic polymers.
Claim 8
Dependent Claim
119 words
The heat developable color light-sensitive material as claimed in claim 1, wherein said compound having a dye moiety within the molecule is represented by the following general formula (CI): (Dye--X).sub.q --Y (CI) wherein Dye represents a dye moiety which, when released from the molecule, has a diffusibility different from that of (Dye--X) q --Y, q represents 1 or 2 and when q=2, Dye--X may be the same or different from each other, X represents a bond or linking group and Y represents a group which releases Dye in direct or inverse conformity with light-sensitive silver salt having an imagewise latent image to cause a difference in diffusibility between the released dye and the compound represented by (Dye--X) q --Y.
Claim 9
Dependent Claim
46 words
The heat developable color light-sensitive material as claimed in claim 1, wherein the sensitizing dye is present in at least one process selected from a process of formation of a dispersion of grains of silver halide and a process of physical ripening of silver halide grains.
Claim 10
Dependent Claim
30 words
The heat developable color light-sensitive material as claimed in claim 1, wherein the sensitizing dye is present in the process of formation of a dispersion of grains of silver halide.
Claim 11
Dependent Claim
27 words
The heat developable color light-sensitive material as claimed in claim 1, wherein the sensitizing dye is present in the process of physical ripening of silver halide grains.
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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |