US4629684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat developable color photographic light-sensitive material with development accelerator
Assignee: Fujifilm Holdings Corp
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Filing: 1985-09-12
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Granted: 1986-12-16
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Expires: 2005-09-12
Abstract
Abstract A heat developable color photographic light-sensitive material comprising a support having thereon at least one layer containing a compound represented by the formula: R--C.tbd.C--M.sub.1/k wherein R represents an unsubstituted or substituted group selected from an alkyl group, cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group and a heterocyclic group; M represents a hydrogen atom or a transition metal atom; and k is an integer of 1 to 3. This heat-developable color photographic light-sensitive material provides a high maximum density and a low fog by heat developing at a relatively low temperature and for a short time.
Inventors
- 👤 Kozo Sato
- 👤 Yoshiharu Yabuki
- 👤 Ken Kawata
- 👤 Hiroyuki Hirai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49836; G03C1/49845; Y; Y10; Y10S; Y10S430/00; Y10S430/156
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
A heat developable color photographic light-sensitive material comprising a support having thereon a dye image forming compound and at least one layer containing a compound represented by the formula: R--C.tbd.C--M.sub.1/k wherein R represents an unsubstituted or substituted group selected from an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group and a heterocyclic group; M represents a hydrogen atom or a transition metal atom; and k is an integer of 1 to 3, wherein a silver halide emulsion is present as a light-sensitive substance.
Claim 2
Dependent Claim
92 words
A heat developable color photographic light-sensitive material comprising a support having thereon a dye image forming compound and at least one layer containing a compound represented by the formula: R--C.tbd.C--M.sub.1/k wherein R represents an unsubstituted or substituted group selected from an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group and a heterocyclic group; M represents a hydrogen atom or a transition metal atom; and k is an integer of 1 to 3, wherein a silver halide emulsion is present as a light-sensitive substance.
Claim 3
Dependent Claim
22 words
A heat developable color light-sensitive material as claimed in claim 1, wherein R represents a phenyl group or a substituted phenyl group.
Claim 4
Dependent Claim
19 words
A heat developable color light-sensitive material as claimed in claim 1, wherein the silver halide emulsion is spectrally sensitized.
References Cited (Backward Citations)
US4499172A
Cited
US4550071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-15 | 1990-06-16 | 1990-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-15 | 1994-06-16 | 1994-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-15 | 1998-06-16 | 1998-12-16 | $7700.00 | Window Closed / Lapsed |