Patent US4801520A successfully refreshed from Google Patents.
US4801520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct positive color light-sensitive material comprising a DIR coupler and a pyrazoloazole coupler, and a process for forming a direct positive image
Assignee: Fujifilm Holdings Corp
•
Filing: 1987-07-17
•
Granted: 1989-01-31
•
Expires: 2007-07-17
Abstract
Abstract A direct positive color light-sensitive material comprising a support having provided thereon at least one photographic emulsion layer containing unfogged internal latent image type silver halide particles and a color image forming coupler, wherein said color image forming coupler itself is substantially nondiffusible and produces or releases a dye upon oxidation coupling with a color developing agent, and said light-sensitive material contains at least one development inhibitor-releasing type coupler selected from the group consisting of compounds represented by formulae (D-I) and (D-II) Coup-Z (D-I) Coup-TIME-Z (D-II) wherein Coup represents a coupler residual group; Z represents a diffusible development inhibitor or a precursor thereof; and TIME represents a timing group.
Inventors
- 👤 Noriyuki Inoue
- 👤 Tatsuo Heki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C7/00; G03C7/30; G03C7/3003; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
115 words
A direct positive color light-sensitive material comprising a support having provided thereon at least one photographic emulsion layer containing unfogged internal latent image type silver halide particles and a color image forming coupler, wherein said color image forming coupler itself is substantially nondiffusible and produces or releases a dye upon oxidation coupling with a color developing agent, and said light-sensitive material contains at least one development inhibitor-releasing type coupler selected from the group consisting of compounds represented by formulae (D-I) and (D-II) Coup--Z (D-I) Coup--TIME--Z (D-II) wherein coup represents a coupler residual group; Z represents a diffusible development inhibitor or a precursor thereof; and TIME represents a timing group, which further comprises a pyrazoloazole coupler.
Claim 2
Dependent Claim
115 words
A direct positive color light-sensitive material comprising a support having provided thereon at least one photographic emulsion layer containing unfogged internal latent image type silver halide particles and a color image forming coupler, wherein said color image forming coupler itself is substantially nondiffusible and produces or releases a dye upon oxidation coupling with a color developing agent, and said light-sensitive material contains at least one development inhibitor-releasing type coupler selected from the group consisting of compounds represented by formulae (D-I) and (D-II) Coup--Z (D-I) Coup--TIME--Z (D-II) wherein coup represents a coupler residual group; Z represents a diffusible development inhibitor or a precursor thereof; and TIME represents a timing group, which further comprises a pyrazoloazole coupler.
Claim 3
Dependent Claim
36 words
A direct positive color light-sensitive material as in claim 1, wherein said development inhibitor or precursor thereof represented by Z is mercaptotetrazole, selenotetrazole, mercaptobenzothiazole, selenobenzothiazole, mercaptobenzoxazole, selenobenzoxazole, mercaptobenzimidazole, selenobenzimidazole, benzotriazole, benzodiazole, and derivatives or precursors thereof.
Claim 4
Dependent Claim
36 words
A direct positive color light-sensitive material as in claim 1, wherein the amount of said development inhibitor-releasing type coupler is in the range of from 1×10 -6 to 1×10 -1 mol per mol of silver halide.
Claim 5
Dependent Claim
36 words
A direct positive color light-sensitive material as in claim 3, wherein the amount of said development inhibitor-releasing type coupler is in the range of from 5×10 -5 to 5×10 -2 mol per mol of silver halide.
Claim 6
Dependent Claim
16 words
A direct positive color light-sensitive material as in claim 1, which further comprises a nucleating agent.
Claim 7
Dependent Claim
34 words
A direct positive color light-sensitive material as in claim 5, wherein the amount of said nucleating agent is in the range of from 1×10 -8 to 1×10 -2 mol per mol of silver halide.
Claim 8
Dependent Claim
34 words
A direct positive color light-sensitive material as in claim 6, wherein the amount of said nucleating agent is in the range of from 1×10 -6 to 1×10 -3 mol per mol of silver halide.
Claim 9
Dependent Claim
139 words
A direct positive color light-sensitive material as in claim 5, wherein said nucleating agent is represented by formula (N-I) ##STR36## wherein Z represents a nonmetallic atomic group required to form a substituted or unsubstituted five- or six-membered heterocyclic ring; R 1 represents a substituted or unsubstituted aliphatic group; R 2 represents a hydrogen atom, a substituted or unsubstituted aliphatic group, or a substituted or unsubstituted aromatic group; Y represents a paired ion for electric charge balance; and n and m each represents an integer of 0 or 1, with the proviso that at least one of the groups represented by R 1 , R 2 , and Z contains an alkynyl group, an acyl group, a hydrazine group, or a hydrazone group or R 1 and R 2 combine to form a six-membered ring to provide a dihydropyridinium skeleton.
Claim 10
Dependent Claim
53 words
A direct positive color light-sensitive material as in claim 8, wherein at least one of the substituents for R 1 , R 2 , and Z contains X 1 --L 1 ) m in which X 1 represents a group accelerating adsorption to silver halide, and L 1 represents a divalent linkage group.
Claim 11
Dependent Claim
114 words
A direct positive color light-sensitive material as in claim 5, wherein said nucleating agent is represented by formula (N-II) ##STR37## wherein R 21 represents an aliphatic group, an aromatic group, or a heterocyclic group; R 22 represents a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, an alkoxy group, an aryloxy group, or an amino group; G represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phospholyl group, or an iminomethylene group; and R 23 and R 24 each represents a hydrogen atom or one of R 23 and R 24 represents a hydrogen atom and the other represents an alkylsulfonyl group, an arylsulfonyl group, or an acyl group.
Claim 12
Dependent Claim
30 words
A direct positive color light-sensitive material as in claim 10, wherein G, R 23 , R 24 , and a nitrogen atom in hydrazine combine to form a hydrazone structure.
Claim 13
Dependent Claim
135 words
A direct positive color image formation process comprising processing a direct positive color light-sensitive material by a light fogging process, wherein said direct positive light-sensitive material comprises a support having provided thereon at least one photographic emulsion layer containing unfogged internal latent image type silver halide particles and a color image forming coupler, wherein said color image forming coupler itself is substantially nondiffusible and produces or releases a dye upon oxidation coupling with a color developing agent, and said light-sensitive material contains at least one development inhibitor-releasing type coupler selected from the group consisting of compounds represented by formula (D-I) and (D-II) Coup--Z (D-I) Coup--TIME--Z (D-II) wherein Coup represents a coupler residual group; Z represents a diffusible development inhibitor or a precursor thereof; and TIME represents a timing group, which further comprises a pyrazoloazole coupler.
Claim 14
Dependent Claim
135 words
A direct positive color image formation process comprising processing a direct positive color light-sensitive material by a light fogging process, wherein said direct positive light-sensitive material comprises a support having provided thereon at least one photographic emulsion layer containing unfogged internal latent image type silver halide particles and a color image forming coupler, wherein said color image forming coupler itself is substantially nondiffusible and produces or releases a dye upon oxidation coupling with a color developing agent, and said light-sensitive material contains at least one development inhibitor-releasing type coupler selected from the group consisting of compounds represented by formula (D-I) and (D-II) Coup--Z (D-I) Coup--TIME--Z (D-II) wherein Coup represents a coupler residual group; Z represents a diffusible development inhibitor or a precursor thereof; and TIME represents a timing group, which further comprises a pyrazoloazole coupler.
Claim 15
Dependent Claim
33 words
A direct positive color image formation process as in claim 12, which comprises processing said direct positive light-sensitive material with a color developing solution having a pH value of from 9.5 to 11.3.
Claim 16
Dependent Claim
33 words
A direct positive color image formation process as in claim 13, which comprises processing said direct positive light-sensitive material with a color developing solution having a pH value of from 10.0 to 11.0.
Claim 17
Dependent Claim
18 words
A direct positive color light-sensitive material as in claim 1, wherein said pyrazoloazole coupler is [5,1-c] [1,2,4] triazole.
Claim 18
Dependent Claim
18 words
A direct positive color light-sensitive material as in claim 1, wherein said pyrazoloazole coupler is [1,5-b] [1,2,4] triazole.
Claim 19
Dependent Claim
19 words
A direct positive color image formation process as in claim 12, wherein said pyrazoloazole coupler is [5,1-c] [1,2,4] triazole.
Claim 20
Dependent Claim
19 words
A direct positive color image formation process as in claim 12, wherein said pyrazoloazole coupler is [1,5-b] [1,2,4] triazole.
References Cited (Backward Citations)
GB1151363A
Cited
US3933500A
Cited
GB1504094A
Cited
DE2655870A1
Cited
US4187110A
Cited
US4477563A
Cited
US4431728A
Cited
US4444871A
Cited
EP0086654A2
Cited
JPS59206834A
Cited
JPS59210440A
Cited
US4581328A
Cited
JPS61170733A
Cited
JPS623249A
Cited
JPS6192556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |