US4292401A — Bleaching composition for photographic processing

Claim 1

Independent Claim 85 words

A bleaching composition for use in processing silver halide color photographic light-sensitive material, comprising compounds [I], [II], and [III] as follows: Compound [I]: at least one persulfate; Compound [II]: a water-soluble halide; and Compound [III]: at least one compound selected from the compounds represented by following general formula [III]; ##STR8## wherein X represents carbon atoms or carbon and nitrogen atoms forming an unsubstituted or substituted 5-membered ring containing two unsaturated bonds, including a 5-membered ring fused with a 5- or 6-membered carbocyclic or heterocyclic ring.

Claim 2

Dependent Claim 85 words

A bleaching composition for use in processing silver halide color photographic light-sensitive material, comprising compounds [I], [II], and [III] as follows: Compound [I]: at least one persulfate; Compound [II]: a water-soluble halide; and Compound [III]: at least one compound selected from the compounds represented by following general formula [III]; ##STR8## wherein X represents carbon atoms or carbon and nitrogen atoms forming an unsubstituted or substituted 5-membered ring containing two unsaturated bonds, including a 5-membered ring fused with a 5- or 6-membered carbocyclic or heterocyclic ring.

Claim 3

Dependent Claim 13 words

The bleaching composition of claim 1, wherein said compound [II] is a chloride.

Claim 4

Dependent Claim 13 words

The bleaching composition of claim 1, wherein said compound [II] is a bromide.

Claim 5

Dependent Claim 17 words

The bleaching composition of claim 2, wherein said chloride is potassium chloride, sodium chloride or ammonium chloride.

Claim 6

Dependent Claim 17 words

The bleaching composition of claim 3, wherein said bromide is potassium bromide, sodium bromide, or ammonium bromide.

Claim 7

Dependent Claim 24 words

The bleaching composition of claim 1, wherein said compound [III] contains at least two nitrogen atoms forming a 5-membered ring containing two unsaturated bonds.

Claim 8

Dependent Claim 16 words

The bleaching composition of claim 1, wherein said compound [III] is imidazole or an alkyl-substituted imidazole.

Claim 9

Dependent Claim 18 words

The bleaching composition of claim 1, wherein said compound [III] is benzimidazole, benzotriazole, or a substituted derivative thereof.

Claim 10

Dependent Claim 113 words

The bleaching composition of claim 1, wherein said compound [III] is represented by the formula [III-a] ##STR9## wherein X 1 , X 2 , and X 3 may be the same or different and each represents a nitrogen atom or a ##STR10## group, wherein R and R 1 may be same or different, and each represents a hydrogen atom, a straight chain or branched chain alkyl group, a straight chain or branched chain alkenyl group, a monocyclic aryl group having 6 to 8 carbon atoms, a straight chain alkoxy group, an amino group, an acyl group, a cyano group, a nitro group, a sulfo group, or a halogen atom (e.g., chlorine or bromine).

Claim 11

Dependent Claim 118 words

The bleaching composition of claim 1, wherein compound [III] is represented by the formula [III-b] ##STR11## wherein X 4 and X 5 may be the same or different and each represents a nitrogen atom or a ##STR12## group and R, R 2 , R 3 , R 4 , and R 5 may be the same or different, and each represents a hydrogen atom, a straight chain or branched chain alkyl group, a straight chain or branched chain alkenyl group, a monocyclic aryl group having 6 to 8 carbon atoms, a straight chain alkoxy group, an amino group, an acyl group, a cyano group, a nitro group, a sulfo group, or a halogen atom (e.g., chlorine or bromine).

Claim 12

Dependent Claim 50 words

The bleaching composition of claim 1, wherein said 5-membered ring completed by X is a pyrrole ring, an imidazole ring, a pyrazole ring, a 1,2,3-triazole ring, a 1,2,4-triazole ring, a tetrazole ring, an indole ring, an indazole ring, a benzimidazole ring, a benzotrazole ring, a triazaindene ring, a tetrazaindene ring.

Claim 13

Dependent Claim 17 words

The bleaching composition of claim 1, wherein said persulfate is potassium persulfate, sodium persulfate, or ammonium persulfate.

Claim 14

Dependent Claim 85 words

A photographic bleaching process, wherein the bleaching is carried out with a composition comprising Compounds [I], [II] and [III] as follows: Compound [I]: at least one persulfate; Compound [II]: a water-soluble halide; and Compound [III]: at least one compound selected from the compounds represented by following general formula [III]; ##STR13## wherein X represents carbon atoms or carbon and nitrogen atoms forming an unsubstituted or substituted 5-membered ring containing two unsaturated bonds, including a 5-membered ring fused with a 5- or 6-membered carbocyclic or heterocyclic ring.

Claim 15

Dependent Claim 85 words

A photographic bleaching process, wherein the bleaching is carried out with a composition comprising Compounds [I], [II] and [III] as follows: Compound [I]: at least one persulfate; Compound [II]: a water-soluble halide; and Compound [III]: at least one compound selected from the compounds represented by following general formula [III]; ##STR13## wherein X represents carbon atoms or carbon and nitrogen atoms forming an unsubstituted or substituted 5-membered ring containing two unsaturated bonds, including a 5-membered ring fused with a 5- or 6-membered carbocyclic or heterocyclic ring.

Claim 16

Dependent Claim 69 words

The process of claim 13, wherein said processing additionally comprises using as a bleaching accelerator a mercapto compound represented by the following general formula [IV]: X--A--SH [IV] wherein A represents an alkylene group or a nitrogen-containing an unsaturated divalent heterocyclic ring, and X represents an alkyl-substituted or unsubstituted amino group, a nitrogen-containing saturated heterocyclic ring, a hydroxy group, a carboxy group or a sulfo group, or a precursor thereof.

Claim 17

Dependent Claim 51 words

The process of claim 14, wherein said bleaching accelerator is a compound represented by the following general formula [V]: X--(CH.sub.2).sub.n --SH [V] wherein X represents an N,N-dimethylamino group, an N,N-diethylamino group, a hydroxy group or a sulfo group, and n represents an integer of 2 or 3 or a precursor thereof.

Claim 18

Dependent Claim 17 words

The process of claim 14 or 15, wherein said bleaching accelerator is used in the bleaching bath.

Claim 19

Dependent Claim 17 words

The process of claim 13, wherein said bleaching accelerator is selected from the group consisting of ##STR14##

Claim 20

Dependent Claim 22 words

The process of claim 13, wherein the bleaching is carried out at a temperature of from about 20° C. to 60° C.

Claim 21

Dependent Claim 20 words

The process of claim 18, wherein the bleaching is carried out at a temperature between 30° C. and 40° C.

Claim 22

Dependent Claim 21 words

The process of claim 13, wherein the bleaching is carried out for a time of from about 1 to 8 minutes.

Claim 23

Dependent Claim 20 words

The process of claim 20, wherein the bleaching is carried out for a time of from 1.5 to 6 minutes.

Claim 24

Dependent Claim 16 words

The process of claim 13, wherein said persulfate is potassium persulfate, sodium persulfate, or ammonium persulfate.

Claim 25

Dependent Claim 12 words

The process of claim 13, wherein said bleaching follows a color development.

Claim 26

Dependent Claim 29 words

The process of claim 13, wherein said bleaching occurs in the following processing sequence of a color photographic element: color development, stopping, bleaching, washing, fixing, washing, stabilizing and drying.

Claim 27

Dependent Claim 28 words

The process of claim 13, wherein said bleaching occurs in the following processing sequence of a color photographic element: color development, stopping, bleaching, fixing, washing, stabilizing and drying.

Claim 28

Dependent Claim 28 words

The process of claim 13, wherein said bleaching occurs in the following processing sequence of a color photographic element: color development, stop-fixing, bleaching, fixing, washing, stabilizing and drying.

Claim 29

Dependent Claim 36 words

The process of claim 13, wherein said bleaching occurs in the following processing sequence of a color photographic element: black-and-white development, stopping, washing, fogging, washing, color development, stopping, washing, bleaching, washing, fixing, washing, stabilizing and drying.

Claim 30

Dependent Claim 35 words

The process of claim 13, wherein said bleaching occurs in the following processing sequence of a color photographic element: black-and-white development, stopping, washing, fogging, washing, color development, stopping, washing, bleaching, fixing, washing, stabilizing and drying.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1984-09-28	1985-03-30	1985-09-29	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1988-09-28	1989-03-30	1989-09-29	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1992-09-28	1993-03-30	1993-09-29	$7700.00	Window Closed / Lapsed

Bleaching composition for photographic processing

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