US4540655A
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US
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Method of processing a direct positive silver halide photographic light-sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1984-10-11
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Granted: 1985-09-10
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Expires: 2004-10-11
Abstract
Abstract A method of processing a direct positive silver halide photographic light-sensitive material which comprises processing a direct positive silver halide photographic light-sensitive material comprising a support having coated thereon at least one hydrophilic colloid layer containing a compound represented by the following general formula (I): R.sup.1 NHNHCOR.sup.2 (I) wherein R 1 represents an unsubstituted or substituted aryl group or an unsubstituted or substituted alkyl group; and R 2 represents a hydrogen atom, an unsubstituted or substituted aryl group or an unsubstituted or substituted alkyl group, with a developing solution containing not less than 25 g per liter of a hydroquinone and having a pH of from 11.0 to 13.0. According to the processing method an excellent reversal photographic image can be obtained using a high pH type developing solution which is stable wherein a change of pH due to exhaustion and aerial oxidation is considerably small.
Inventors
- 👤 Yoshihiro Takagi
- 👤 Shigeo Hirano
- 👤 Tadao Sugimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:56
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C1/00; G03C1/005; G03C1/485; G03C1/48538; G03C1/48546; G03C1/48561
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
128 words
A method of processing a direct positive silver halide light-sensitive material which contains an internal latent image type silver halide emulsion layer, comprising the steps of: providing a direct positive silver halide photographic light-sensitive material comprising a support having coated thereon a hydrophilic colloid layer containing a fogging compound represented by the following general formula (I): R.sup.1 NHNHCOR.sup.2 (I) wherein R 1 represents an unsubstituted or substituted aryl group or an unsubstituted or substituted alkyl group; and R 2 represents a hydrogen atom, an unsubstituted or substituted aryl group or an unsubstituted or substituted alkyl group; imagewise exposing the material to light; developing the exposed material in a developing solution containng 25 g/l or more of hydroquinone, the developing solution having a pH of from 11.0 to 13.0.
Claim 2
Independent Claim
128 words
A method of processing a direct positive silver halide light-sensitive material which contains an internal latent image type silver halide emulsion layer, comprising the steps of: providing a direct positive silver halide photographic light-sensitive material comprising a support having coated thereon a hydrophilic colloid layer containing a fogging compound represented by the following general formula (I): R.sup.1 NHNHCOR.sup.2 (I) wherein R 1 represents an unsubstituted or substituted aryl group or an unsubstituted or substituted alkyl group; and R 2 represents a hydrogen atom, an unsubstituted or substituted aryl group or an unsubstituted or substituted alkyl group; imagewise exposing the material to light; developing the exposed material in a developing solution containng 25 g/l or more of hydroquinone, the developing solution having a pH of from 11.0 to 13.0.
Claim 3
Dependent Claim
36 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the aryl group which may be substituted represented by R 1 is a mono- or dicyclic aryl group.
Claim 4
Dependent Claim
27 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein R 1 represents an unsubstituted or substituted phenyl group.
Claim 5
Dependent Claim
48 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 2, wherein the substituent for the substituted aryl group is an alkyl group, an aralkyl group, an alkoxy group, a substituted amino group, an aliphatic acylamino group or an aromatic acylamino group.
Claim 6
Dependent Claim
87 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the substituent for the substituted aryl group is a group represented by the formula X--Y-- n , wherein n represents 0 or 1; Y represents a divalent connecting group; and X represents a group containing a ##STR24## unit, a group containing a ##STR25## unit, a group represented by ##STR26## a heterocyclic group, an aralkyl group when n is 1, a substituted aryl group or a group represented by ##STR27##
Claim 7
Dependent Claim
123 words
A method of processing a direct positive silver photographic light-sensitive material as claimed in claim 5, wherein the divalent connecting group represented by Y is --CONH--, --R 11 --CONH--, --O--R 11 --CONH--, --S--R 11 --CONH--, --R 11 --, --R 11 --O--R 12 --, --R 11 --S--R 12 --, --SO 2 NH--, --R 11 --SO 2 NH--, --NHCONH--, --CH 2 --CH═N--, --R 11 --NH--, --R 11 --O--R 12 --CONH--, --NHCO--R 11 --, --NHCO--R 11 --CONH-- or --R 11 --R 12 --, wherein R 11 and R 12 (which may be the same or different) each represents a divalent saturated or unsaturated aliphatic group or a divalent aromatic group, and in --R 11 --R 12 --, R 11 and R 12 are different divalent groups.
Claim 8
Dependent Claim
37 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 5, wherein the heterocyclic group represented by X is a 5 membered or 6-membered ring containing at least one hetero atom.
Claim 9
Dependent Claim
42 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 5, wherein the aralkyl group represented by X is a mono- or dicyclic aralkyl group having an alkyl moiety containing from 1 to 3 carbon atoms.
Claim 10
Dependent Claim
45 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 5, wherein the substituent for the substituted aryl group represented by X is an alkyl group, an alkoxy group, a nitro group, a sulfonamido group or an acetamido group.
Claim 11
Dependent Claim
100 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 5, wherein the group containing a ##STR28## unit represented by X is an ##STR29## group, an ##STR30## group, an ##STR31## group or an ##STR32## group, wherein R 21 represents an aliphatic group, an aromatic group or a heterocyclic group; R 22 represents a hydrogen atom, R 23 represents a hydrogen atom or an aliphatic group; R 11 represents a divalent saturated or unsaturated aliphatic group or a divalent aromatic group; and R 21 and R 23 may be bonded together to form a ring.
Claim 12
Dependent Claim
86 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 5, wherein the group containing a ##STR33## unit represented by X is an ##STR34## group or an ##STR35## group, wherein R 21 represents an aliphatic group, an aromatic group or a heterocyclic group; R 22 represents a hydrogen atom, an aliphatic group or an aromatic group; R 23 represents a hydrogen atom or an aliphatic group; and R 21 and R 23 may be bonded together to form a ring.
Claim 13
Dependent Claim
76 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 10 or 11 wherein the group represented by R 21 or R 22 may be substituted with an alkoxy group, an alkoxycarbonyl group, an aryl group, an alkyl group, a dialkylamino group, an alkylthio group, a mercapto group, a hydroxy group, a halogen atom, a carboxy group, a nitro group, a cyano group, a sulfonyl group or a carbamoyl group.
Claim 14
Dependent Claim
49 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 5, wherein Z represents a group of non-metallic atoms forming together with ##STR36## a 5-membered or 6-membered heterocyclic ring; and R 31 represents a hydrogen atom or a saturated or unsaturated aliphatic group.
Claim 15
Dependent Claim
36 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 5, wherein X represents a group containing a ##STR37## unit, a group represented by ##STR38## or a group represented ##STR39##
Claim 16
Dependent Claim
40 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the alkyl group which may be substituted represented by R 1 is an alkyl group containing from 1 to 10 carbon atoms.
Claim 17
Dependent Claim
48 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 15, wherein the substituent for the substituted alkyl group is an alkyl group, an aralkyl group, an alkoxy group, a substituted amino group, an aliphatic acylamino group or an aromatic acylamino group.
Claim 18
Dependent Claim
36 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the aryl group which may be substituted represented by R 2 is a mono- or dicyclic aryl group.
Claim 19
Dependent Claim
27 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein R 2 represents an unsubstituted or substituted phenyl group.
Claim 20
Dependent Claim
39 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 17, wherein the substituent for the substituted aryl group is a halogen atom, a cyano group, a carboxy group or a sulfo group.
Claim 21
Dependent Claim
39 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the alkyl group which may be substituted represented by R 2 is an alkyl group containing 1 to 4 carbon atoms.
Claim 22
Dependent Claim
39 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 20, wherein the substituent for the substituted alkyl group is a halogen atom, a cyano group, a carboxy group or a sulfo group.
Claim 23
Independent Claim
147 words
A method of processing a direct positive silver halide light-sensitive material which contains an internal latent image type silver halide emulsion layer, comprising the steps of: providing a direct positive silver halide photographic light-sensitive material comprising a support having coated thereon a hydrophilic colloid layer containing a fogging compound represented by the following general formula (II): ##STR40## wherein R 1 and R 2 which may be the same or different each represents a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclic group; R 3 represents a hydrogen atom or an aliphatic group; R 4 represents a hydrogen atom, an aliphatic group, or an aromatic group; and X represents a divalent aromatic group; imagewise exposing the material to light; developing the exposed material in a developing solution containing 25 g/l or more of hydroquinone, the developing solution having a pH of from 11.0 to 13.0.
Claim 24
Independent Claim
147 words
A method of processing a direct positive silver halide light-sensitive material which contains an internal latent image type silver halide emulsion layer, comprising the steps of: providing a direct positive silver halide photographic light-sensitive material comprising a support having coated thereon a hydrophilic colloid layer containing a fogging compound represented by the following general formula (II): ##STR40## wherein R 1 and R 2 which may be the same or different each represents a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclic group; R 3 represents a hydrogen atom or an aliphatic group; R 4 represents a hydrogen atom, an aliphatic group, or an aromatic group; and X represents a divalent aromatic group; imagewise exposing the material to light; developing the exposed material in a developing solution containing 25 g/l or more of hydroquinone, the developing solution having a pH of from 11.0 to 13.0.
Claim 25
Dependent Claim
53 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 22, wherein the compound is represented by the following general formula (III) ##STR41## wherein R 1 represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group; and X represents a divalent aromatic group.
Claim 26
Dependent Claim
32 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the compound is incorporated in an internal latent image type silver halide emulsion layer.
Claim 27
Dependent Claim
38 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the compound is incorporated into a hydrophilic colloid layer adjacent to an internal latent image type silver halide emulsion layer.
Claim 28
Dependent Claim
51 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, 24, or 25, wherein the amount of the compound is in a range of from 0.1 mg to 5,000 mg per mol of silver halide in the internal latent image type silver halide emulsion.
Claim 29
Dependent Claim
50 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 24 or 25, wherein the amount of the compound is in a range of from 0.5 mg to 2,000 mg per mol of silver halide in the internal latent image type silver halide emulsion.
Claim 30
Dependent Claim
51 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, 24 or 25, wherein the amount of the compound is in a range of from 1 mg to 1,000 mg per mol of silver halide in the internal latent image type silver halide emulsion.
Claim 31
Dependent Claim
34 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the amount of the hydroquinone is in a range of from 25 g/litter to 70 g/liter.
Claim 32
Dependent Claim
34 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the amount of the hydroquinone is in a range of from 30 g/liter to 65 g/liter.
Claim 33
Dependent Claim
22 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the hydroquinone is hydroquinone.
Claim 34
Dependent Claim
33 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the pH of the developing solution is in a range of from 11 to 12.5.
Claim 35
Dependent Claim
25 words
A method of processing a direct positive silver halide photographic light-sensitive material as claimed in claim 1, wherein the developing solution further contains a preservative.
Claim 36
Dependent Claim
25 words
A method of processing a direct positive silver halide photographic light-sensititive material as claimed in claim 1, wherein the developer is an aerial oxidized developer.
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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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |