Patent US4328302A successfully refreshed from Google Patents.
US4328302A
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Lithographic silver halide photographic light-sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1981-02-09
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Granted: 1982-05-04
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Expires: 2001-02-09
Abstract
Abstract A lithographic silver halide photographic light-sensitive material is described which scarcely exhibits colored fringe and black pepper, forms halftone dots of good quality whether a fresh or an exhausted developer is used for processing thereof, and which scarcely shows a drop in sensitivity even when a developer contaminated by a fixing solution is used; said material comprises a support and at least one lithographic silver halide emulsion layer, and containing in said emulsion layer or in another hydrophilic colliodal layer which does not contain silver halide emulsion at least one compound represented by formula (I) ##STR1## wherein M represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; X represents --SO 2 NHR', --COOM', --SO 3 M', --OH or --CONH 2 , wherein M' represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; and R' represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; R represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; and n represents 1 or 2.
Inventors
- 👤 Tatsuo Nishimura
- 👤 Hiroyuki Mifune
- 👤 Yoshiharu Fuseya
- 👤 Yukihide Urata
- 👤 Tadao Shishido
- 👤 Yasuo Kasama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:39
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/35; G03C1/355; Y; Y10; Y10S; Y10S430/00; Y10S430/15
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
160 words
A lithographic silver halide photographic light-sensitive material comprising a support and at least one lithographic silver halide emulsion layer, the silver halides of said at least one silver halide emulsion layer being silver chlorobromide and silver chloroiodobromide in which at least 60 mole % of silver chloride and 0 to 5 mol % of silver iodide are contained, and containing in said emulsion layer or in another hydrophilic colloidal layer which does not contain silver halide at least one compound represented by formula (I) ##STR7## wherein M represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; X represents --SO 2 NR', --COOM', --SO 3 M', --OH or --CONH 2 , wherein M' represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; and R' represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; R represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; and n represents 1 to 2.
Claim 2
Dependent Claim
160 words
A lithographic silver halide photographic light-sensitive material comprising a support and at least one lithographic silver halide emulsion layer, the silver halides of said at least one silver halide emulsion layer being silver chlorobromide and silver chloroiodobromide in which at least 60 mole % of silver chloride and 0 to 5 mol % of silver iodide are contained, and containing in said emulsion layer or in another hydrophilic colloidal layer which does not contain silver halide at least one compound represented by formula (I) ##STR7## wherein M represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; X represents --SO 2 NR', --COOM', --SO 3 M', --OH or --CONH 2 , wherein M' represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; and R' represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; R represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; and n represents 1 to 2.
Claim 3
Dependent Claim
22 words
A lithographic silver halide photographic light-sensitive material as in claim 1 wherein X represents --SO 2 NHR', --COOM' and --SO 3 M'.
Claim 4
Dependent Claim
17 words
A lithographic silver halide photographic light-sensitive material as in claim 1 wherein X represents --SO 2 NHR'.
Claim 5
Dependent Claim
19 words
A lithographic silver halide photographic light-sensitive material as in claim 1 wherein X represents --SO 2 NH 2 .
Claim 6
Dependent Claim
48 words
A lithographic silver halide photographic light-sensitive material as in claim 1, 2, 3, or 4 wherein the compound represented by formula (I) is present in an amount of from 10 -7 to 10 -2 moles per mole of silver halide contained in the light-sensitive silver halide emulsion layer.
Claim 7
Dependent Claim
48 words
A lithographic silver halide photographic light-sensitive material as in claim 1, 2, 3, or 4 wherein the compound represented by formula (I) is present in an amount of from 10 -6 to 10 -2 moles per mole of silver halide contained in the light-sensitive silver halide emulsion layer.
Claim 8
Dependent Claim
47 words
A lithographic silver halide photographic light-sensitive material as in claim 1, 2, 3, or 4 wherein the compound represented by formula (I) is present in an amount of from 10 -5 to 10 -3 moles per mole of silver halide contained in the light-sensitive halide emulsion layer.
Claim 9
Dependent Claim
43 words
A lithographic silver halide photographic light-sensitive material as in claim 1 wherein said silver halides are silver chlorobromide and silver chloroiodobromide in which each 75 mole % or more of silver chloride and 0 to 5 mol % of silver iodide are contained.
Claim 10
Dependent Claim
31 words
A lithographic silver halide photographic light-sensitive material as in claim 1 wherein a polyalkylene oxide compound is present in the silver halide emulsion layer or the hydrophilic colloidal layers adjacent thereto.
Claim 11
Dependent Claim
26 words
A lithographic silver halide photographic light-sensitive material as in claim 1 wherein a polymer latex is present in the silver halide emulsion layers or other layers.
Claim 12
Dependent Claim
25 words
A material as in claim 1, wherein said at least one compound is in said another hydrophilic colloidal layer which does not contain silver halide.
Claim 13
Dependent Claim
10 words
A material as in claim 1, wherein X is --OH.
Claim 14
Dependent Claim
12 words
A material as in claim 1, wherein X is --CONH 2 .
Claim 15
Dependent Claim
18 words
A material as in claim 1, developable to a gamma of more than 10 with a lith developer.
Claim 16
Dependent Claim
66 words
A material as in claim 14, wherein said lith developer comprises: (a) a developing agent substantially comprising an o- or p-dihydroxybenzene alone which is present in an amount of 1 to 100 g/l of developer; (b) a sulfite present in an amount of 5 g/l or less; and (c) an alkali agent present in an amount that the pH of the developer is 9 or more.
Claim 17
Dependent Claim
138 words
A process for forming a high contrast silver image which comprises processing a lithographic silver halide photographic light-sensitive material comprising a support and at least one lithographic silver halide emulsion layer, and containing in said emulsion layer or in another hydrophilic colloidal layer which does not contain silver halide emulsion at least one compound represented by formula (I) with a lith developer ##STR8## wherein M represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; X represents --SO 2 NHR', --COOM', --SO 3 M', --OH or --CONH 2 , wherein M' represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; and R' represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; R represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; and n represents 1 or 2.
Claim 18
Dependent Claim
138 words
A process for forming a high contrast silver image which comprises processing a lithographic silver halide photographic light-sensitive material comprising a support and at least one lithographic silver halide emulsion layer, and containing in said emulsion layer or in another hydrophilic colloidal layer which does not contain silver halide emulsion at least one compound represented by formula (I) with a lith developer ##STR8## wherein M represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; X represents --SO 2 NHR', --COOM', --SO 3 M', --OH or --CONH 2 , wherein M' represents hydrogen, an alkali metal ion or --NH 4 .sup.⊕ ; and R' represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; R represents hydrogen or an alkyl group having from 1 to 3 carbon atoms; and n represents 1 or 2.
Claim 19
Dependent Claim
65 words
The process of claim 16, wherein said lith developer comprises: (a) a developing agent substantially comprising an o- or p-dihydroxybenzene alone which is present in an amount of 1 to 100 g/l of developer; (b) a sulfite present in an amount of 5 g/l or less; and (c) an alkali agent present in an amount that the pH of the developer is 9 or more.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |