Patent US4842977A successfully refreshed from Google Patents.
US4842977A
Expired / Lapsed
US
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Light-sensitive material containing silver halide, reducing agent, polymerizable compound and a base or base precursor
Assignee: Fujifilm Holdings Corp
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Filing: 1988-01-28
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Granted: 1989-06-27
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Expires: 2008-01-28
Abstract
Abstract A light-sensitive material comprises a light-sensitive layer which contains silver halide, a reducing agent, a polymerizable compound and a base or base precursor provided on a support. The silver halide and polymerizable compound are contained in microcapsules to form light-sensitive microcapsules which are dispersed in the light-sensitive layer. The base or base precursor is contained in particles which are arranged outside of the light-sensitive microcapsules. At least 30% of the particles are adsorbed on the surface of the light-sensitive microcapsules.
Inventors
- 👤 Fujio Kakimi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:34
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002; G03F7/004; G03F7/027; G03F7/028; G03F7/0285; Y; Y10; Y10S; Y10S430/00; Y10S430/156
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
82 words
A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent, an ethylessically unsaturated polymerizable compound and a base or base precursor provided on a support, said silver halide and polymerizable compound are contained in microcapsules to form light-sensitive microcapsules which are dispersed in the light-sensitive layer, wherein the base or base precursor is contained in particles which are arranged outside of the light-sensitive microcapsules, at least 30% of said particles being adsorbed on the surface of the light-sensitive microcapsules.
Claim 2
Dependent Claim
82 words
A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent, an ethylessically unsaturated polymerizable compound and a base or base precursor provided on a support, said silver halide and polymerizable compound are contained in microcapsules to form light-sensitive microcapsules which are dispersed in the light-sensitive layer, wherein the base or base precursor is contained in particles which are arranged outside of the light-sensitive microcapsules, at least 30% of said particles being adsorbed on the surface of the light-sensitive microcapsules.
Claim 3
Dependent Claim
24 words
The light-sensitive material as claimed in claim 1, wherein at least 50% of the particles are adsorbed on the surface of the light-sensitive microcapsules.
Claim 4
Dependent Claim
24 words
The light-sensitive material as claimed in claim 1, wherein at least 70% of the particles are adsorbed on the surface of the light-sensitive microcapsule.
Claim 5
Dependent Claim
20 words
The light-sensitive material as claimed in claim 1, wherein the particles are solid particles of the base or base precursor.
Claim 6
Dependent Claim
24 words
The light-sensitive material as claimed in claim 1, wherein the particles are microcapsules containing the base or base precursor other than the light-sensitive microcapsules.
Claim 7
Dependent Claim
26 words
The light-sensitive material as claimed in claim 1, wherein the base or base precursor has a melting point in the range of 70° to 210° C.
Claim 8
Dependent Claim
29 words
The light-sensitive material as claimed in claim 1, wherein the base or base precursor has a solubility in water of not more than 0.1 weight % at 25° C.
Claim 9
Dependent Claim
27 words
The light-sensitive material as claimed in claim 1, wherein the base or a base formed from the base precursor has a pKa of not less than 7.
Claim 10
Dependent Claim
18 words
The light-sensitive material as claimed in claim 1, wherein the base or base precursor is a guanidine derivative.
Claim 11
Dependent Claim
39 words
The light-sensitive material as claimed in claim 1, wherein the base or base precursor is contained in the light-sensitive layer in an amount of 0.1 to 40 weight % based on the total solid content of the light-sensitive layer.
Claim 12
Dependent Claim
18 words
The light-sensitive material as claimed in claim 1, wherein the light-sensitive layer contains a color image forming substance.
Claim 13
Dependent Claim
18 words
The light-sensitive material as claimed in claim 1, wherein the reducing agent is contained in the light-sensitive microcapsules.
References Cited (Backward Citations)
US4066568A
Cited
US4640892A
Cited
US4629676A
Cited
EP0203613A2
Cited
US4758496A
Cited
US4760011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |