US4640892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-developable light-sensitive material
Assignee: Fujifilm Holdings Corp
•
Filing: 1985-08-26
•
Granted: 1987-02-03
•
Expires: 2005-08-26
Abstract
Abstract A heat-developable color photographic light-sensitive material comprises a support having thereon at least one layer containing the novel base precursor. This heat-developable color photographic light-sensitive material provides a high maximum density and low fog by heat-developing at a relatively low temperature and for a short period of time.
Inventors
- 👤 Ken Kawata
- 👤 Yoshiharu Yabuki
- 👤 Kozo Sato
- 👤 Hiroyuki Hirai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:35
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49836; G03C1/49845; G03C8/00; G03C8/40; G03C8/4013; G03C8/408; G03C8/4086; Y; Y10; Y10S; Y10S430/00; Y10S430/156
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
373 words
A heat-developable light-sensitive material comprising a support having thereon a silver halide emulsion layer, a reducing agent present in said emulsion layer or in a separate layer, wherein at least one layer contains a base precursor compound represented by formula (I) ##STR29## wherein R represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic ring group and a substituted or unsubstituted aralkyl group; Z represents ##STR30## --OR 3 , --SR 4 , or --CR 6 ═CR 7 ) n R 5 wherein R 1 and R 2 each represents a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, a substituted or unsubstituted sulfamoyl group or a substituted or unsubstituted heterocyclic ring group; or R 1 and R 2 combine together to form a ring; R 3 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted carbamoyl group, a substituted or unsubstituted sulfamoyl group or a substituted or unsubstituted heterocyclic ring group. R 4 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic ring group; p1 R 5 represents a hydroxyl group, a substituted or unsubstituted acylamino group, a substituted or unsubstituted alkylsulfonylamino group, or a substituted or unsubstituted arylsulfonylamino group; R 6 and R 7 , respectively, represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, or R 6 and R 7 combine together to form a ring; n represents an integer or 1 or 2 B represents an organic base; x represents an integer of 1 when B is a base having acidity of 1, and x represents an integer of 2 when B is a base having an acidity of 2.
Claim 2
Dependent Claim
373 words
A heat-developable light-sensitive material comprising a support having thereon a silver halide emulsion layer, a reducing agent present in said emulsion layer or in a separate layer, wherein at least one layer contains a base precursor compound represented by formula (I) ##STR29## wherein R represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic ring group and a substituted or unsubstituted aralkyl group; Z represents ##STR30## --OR 3 , --SR 4 , or --CR 6 ═CR 7 ) n R 5 wherein R 1 and R 2 each represents a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, a substituted or unsubstituted sulfamoyl group or a substituted or unsubstituted heterocyclic ring group; or R 1 and R 2 combine together to form a ring; R 3 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted carbamoyl group, a substituted or unsubstituted sulfamoyl group or a substituted or unsubstituted heterocyclic ring group. R 4 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic ring group; p1 R 5 represents a hydroxyl group, a substituted or unsubstituted acylamino group, a substituted or unsubstituted alkylsulfonylamino group, or a substituted or unsubstituted arylsulfonylamino group; R 6 and R 7 , respectively, represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group, or R 6 and R 7 combine together to form a ring; n represents an integer or 1 or 2 B represents an organic base; x represents an integer of 1 when B is a base having acidity of 1, and x represents an integer of 2 when B is a base having an acidity of 2.
Claim 3
Dependent Claim
372 words
A heat-developable light-sensitive material as in claim 1, wherein R represents a hydrogen atom, a substituted or unsubstituted alkyl group containing from 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group containing from 5 to 8 carbon atoms, a substituted or unsubstituted alkenyl group containing from 1 to 5 carbon atoms, a substituted or unsubstituted alkynyl group containing from 2 to 5 carbon atoms, a substituted or unsubstituted aryl group containing from 6 to 16 carbon atoms, a substituted or unsubstituted aralkyl group containing from 7 to 17 carbon atoms, or a substituted or unsubstituted 5-membered or 6-membered heterocyclic ring group; Z represents ##STR31## --OR 3 , --SR 4 , or --CR 6 ═CR 7 ) n R 5 wherein R 1 and R 2 each represents a methyl group, an acyl group, a carbamoyl group, or an arylsulfonyl group, or R 1 and R 2 combine together to form a benzimidazolyl group or a benzotriazolyl group; R 3 represents a hydrogen atom, a substituted or unsubstituted alkyl group containing from 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group containing from 5 to 8 carbon atoms, a substituted or unsubstituted alkenyl group containing from 2 to 5 carbon atoms, a substituted or unsubstituted aryl group containing from 6 to 16 carbon atoms, a substituted or unsubstituted aralkyl group containing from 7 to 17 carbon atoms, a substituted or unsubstituted carbamoyl group, a substituted or unsubstituted sulfamoyl group, or a substituted or unsubstituted heterocyclic ring group; R 4 represents a substituted or unsubstituted alkyl group containing from 1 to 10 carbon atoms, a substituted or unsubstituted aryl group containing from 6 to 16 carbon atoms, or a substituted or unsubstituted heterocyclic ring group; R 6 and R 7 each represents a hydrogen atom, a substituted or unsubstituted alkyl group containing from 1 to 10 carbon atoms, a substituted or unsubstituted alkenyl group containing from 2 to 5 carbon atoms, a substituted or unsubstituted aryl group containing from 6 to 16 carbon atoms, or R 6 and R 7 combine together to form a ring; B represents an organic base having a pKa value of not less than 9 and a boiling point of not less than 100° C.
Claim 4
Dependent Claim
35 words
A heat-developable light-sensitive material as in claim 2, wherein R 3 represents a phenyl group, a benzyl group, a dicyclohexylcarbamoyl group, or a sulfamoyl group; R 4 represents a benzimidazolyl group or a dicyclohexylcarbamoyl group.
Claim 5
Dependent Claim
32 words
A heat-developable light-sensitive material as in claim 2, wherein B represents an organic base having a pKa value of not less than 10 and is substantially non-volatile and non-sticky at room temperature.
Claim 6
Dependent Claim
32 words
A heat-developable light-sensitive material as in claim 3, wherein B represents an organic base having a pKa value of not less than 10 and is substantially non-volatile and non-sticky at room temperature.
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) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |