US4939073A — Stablized method of light sensitive silver halide…

Claim 1

Independent Claim 116 words

A method of stabilizing a light-sensitive silver halide color photographic material comprising the step of contacting, subsequent to a processing step in a bleach-fixing bath or a fixing bath and substantially accompanied by no washing step, a developed silver halide color photographic material at the last stage of color processing of said photographic material with a dye stabilizing solution adjusted to a pH value between about 3 and about 9 and comprising a soluble complex salt of an iron ion obtained by reacting an iron ion with a compound selected from the group consisting of ##STR8## said soluble complex salt of an iron ion being present in a concentration of at least about 1×10 -4 mol/l.

Claim 2

Independent Claim 116 words

A method of stabilizing a light-sensitive silver halide color photographic material comprising the step of contacting, subsequent to a processing step in a bleach-fixing bath or a fixing bath and substantially accompanied by no washing step, a developed silver halide color photographic material at the last stage of color processing of said photographic material with a dye stabilizing solution adjusted to a pH value between about 3 and about 9 and comprising a soluble complex salt of an iron ion obtained by reacting an iron ion with a compound selected from the group consisting of ##STR8## said soluble complex salt of an iron ion being present in a concentration of at least about 1×10 -4 mol/l.

Claim 3

Dependent Claim 28 words

A method according to claim 1, wherein the complex salt of an iron ion is present at a concentration of about 1×10 -4 to about 1×10 -1 mol/l.

Claim 4

Dependent Claim 28 words

A method according to claim 2, wherein the complex salt of an iron ion is present at a concentration of about 4×10 -4 to about 1×10 -2 mol/l.

Claim 5

Independent Claim 100 words

A method of stabilizing a light-sensitive silver halide color photographic material, comprising the step of contacting in multiple stabilizing tanks subsequent to a processing step in a bleach-fixing bath or a fixing bath, a developed silver halide color photographic material at the last stage of color processing of said photographic material with a dye stabilizing solution adjusted to a pH value between about 3 and about 9 and comprising a soluble complex salt of an iron ion, said soluble complex salt being present in the last of said multiple tanks in a stabilizing concentration of at least 1×10 -4 mol/l.

Claim 6

Independent Claim 100 words

A method of stabilizing a light-sensitive silver halide color photographic material, comprising the step of contacting in multiple stabilizing tanks subsequent to a processing step in a bleach-fixing bath or a fixing bath, a developed silver halide color photographic material at the last stage of color processing of said photographic material with a dye stabilizing solution adjusted to a pH value between about 3 and about 9 and comprising a soluble complex salt of an iron ion, said soluble complex salt being present in the last of said multiple tanks in a stabilizing concentration of at least 1×10 -4 mol/l.

Claim 7

Dependent Claim 67 words

A method according to claim 4, wherein the soluble iron salt is a complex salt of an iron ion and a compound represented by Formula (I) or (II): M.sub.m P.sub.m O.sub.3m Formula (I) M(.sub.n+2)P.sub.n O(.sub.3n+1) Formula (II) wherein M represents a hydrogen atom, an alkali metal, or an ammonium cation; m represents an integer from 3 to 6; and n represents an integer from 2 to 20.

Claim 8

Dependent Claim 118 words

A method according to claim 4, wherein the soluble iron salt is a complex salt of an iron ion and a compound represented by Formula (III) or (IV): ##STR9## wherein A 1 through A 6 independently represent an unsubstituted or substituted alkyl group; Z represents an alkylene group, a cycloalkylene group, a phenylene group, --R--O--R--, --ROROR, wherein R represents an alkyl group, or N-A 7 , wherein R 7 represents a hydrogen atom, a hydrocarbon, a lower aliphatic carbonic acid or a lower alcohol; and B, C, D, E, F and G independently represent an --OH group, a --COOM group, or a --PO 3M2 group, wherein M represents a hydrogen atom, an alkali metal or an ammonium cation.

Claim 9

Dependent Claim 29 words

A method according to claim 6, wherein said hydrocarbon is a C 1 -C 12 alkyl group and wherein said lower alcohol is a C 1 -C 4 alcohol.

Claim 10

Dependent Claim 95 words

A method according to claim 4, wherein the soluble iron salt is a complex salt of an iron ion and a compound represented by Formula (V): ##STR10## wherein R 1 represents --COOM or --PO(OM) 2 ; R 2 represents a hydrogen atom, an alkyl group, a --(CH 2 ) n COOM group or a phenyl group; R 3 represents a hydrogen atom or --COOM; M represents a hydrogen atom, an alkali metal, or an ammonium cation; m and q independently represent an integer 0 or 1; and n represents an integer from 1 to 4.

Claim 11

Dependent Claim 18 words

A method according to claim 8, wherein said alkyl group is a C 1 -C 4 alkyl group.

Claim 12

Dependent Claim 64 words

A method according to claim 4, wherein the soluble iron salt is a complex salt of an iron ion and a compound represented by Formula (VI): R.sub.4 N(CH.sub.2 PO.sub.3 M.sub.2).sub.2 Formula (VI) wherein R 4 represents an alkyl group, an aryl group, an aralkyl group or a nitrogen-containing 6-membered heterocyclic group; and M represents a hydrogen atom, an alkali metal or an ammonium cation.

Claim 13

Dependent Claim 66 words

A method according to claim 10, wherein said six-membered heterocyclic group is substituted by at least one moiety selected from the group consisting of --OH, --OR 5 , wherein R 5 is a C 1-4 alkyl group, --PO 3 M 2 , --CH 2 PO 3 M 2 , --N(CH 2 PO 3 M 2 ) 2 , --COOM 2 and --N(CH 2 COOM) 2 .

Claim 14

Dependent Claim 115 words

A method according to claim 4, wherein the soluble iron salt is a complex salt of an iron ion and a compound represented by Formula (VII): ##STR11## wherein R 6 , R 7 and R 8 independently represent a hydrogen atom, a lower alkyl group, --OH, a hydroxyalkyl group, PO 3 M 2 , or --NJ 2 , wherein J represents a hydrogen atom, --OH, a lower alkyl group or --C 2 H 4 OH; X, Y and Z independently represent --OH, --COOM, --PO 3 M 2 or a hydrogen atom; M represents a hydrogen atom, an alkali metal or an ammonium cation; and n and q independently represent an integer of 0 or 1.

Claim 15

Dependent Claim 18 words

A method according to claim 12, wherein both of said lower alkyl groups are C 1-4 alkyl groups.

Claim 16

Dependent Claim 57 words

A method according to claim 4, wherein the soluble iron salt is a complex salt of an iron ion and a compound represented by Formula (VIII): ##STR12## wherein M, R 9 and R 10 independently represent a hydrogen atom, an alkali metal, an ammonium cation, a C 1-12 alkyl group, an alkenyl group, or an alicyclic group.

Claim 17

Dependent Claim 112 words

A method according to claim 4, wherein the soluble iron salt is a complex salt of an iron ion and a compound represented by Formula (IX): ##STR13## wherein R 11 represents an alkyl group, an alkoxy group, a monoalkylamino group, a dialkylamino group, an amino group, an aryloxy group, an allylamino group or an amyloxy group; and Q 1 through Q 3 independently represent --OH, an alkoxy group, an aralkyloxy group, an aryloxy group, or --OM 3 , wherein M 3 represents an alkali metal or an ammonium cation, an amino group, a morpholino group, a cyclic amino group, an alkylamino group, a dialkylamino group, an allylamino group or an alkoxy group.

Claim 18

Dependent Claim 88 words

A method according to claim 15, wherein, for R 11 , said alkyl group is a C 1-12 alkyl group, said alkoxy group is a C 1-12 alkoxy group, said monoalkylamino group is a C 1-12 monoalkylamino group, said dialkylamino group is a C 2-12 dialkylamino group, said aryloxy group is a C 1-24 aryloxy group and said amyloxy group is a C 6 -C 24 amyloxy group and wherein, for Q 1 through Q 3 , said alkoxy group is a C 1 -C 24 alkoxy group.

Claim 19

Dependent Claim 22 words

A method of claim 4, wherein the concentration of the iron salt is from about 1×10 -4 to about 1×10 -1 mol/l.

Claim 20

Dependent Claim 30 words

A method of claim 4, wherein at least a portion of the soluble ion salt in the dye stabilizing solution was present in a bath during the previous processing step.

Claim 21

Dependent Claim 17 words

A method according to claim 4, wherein said stabilizing solution further comprises one or more buffering agents.

Claim 22

Dependent Claim 38 words

A method according to claim 19, wherein said buffering agents are selected from the group consisting of borate, metaborate, borax, monocarboxylate, dicarboxylate, polycarboxylate, hydroxycarboxylate, amino acid, aminocarboxylate, monobasic phosphate, dibasic phosphate, tribasic phosphate, sodium hydroxide, and potassium hydroxide.

Claim 23

Dependent Claim 17 words

A method according to claim 19, wherein said stabilizing solution further comprises one or more chelating agents.

Claim 24

Dependent Claim 31 words

A method according to claim 21, wherein said chelating agents are selected from the group consisting of aminopolycarboxylate, aminopolyphosphonic acid, phosphonocarboxylic acid, alkylidenediphosphonic acid, polyphosphate, pyrophosphoric acid, metaphosphoric acid, and gluconate.

Claim 25

Dependent Claim 16 words

A method according to claim 4, wherein said stabilizing solution further comprises one or more additives.

Claim 26

Dependent Claim 31 words

A method according to claim 23, wherein said additives are selected from the group consisting of fluorescent whitening dyes, surfactants, bactericides, antiseptics, organic sulfur compounds, onium salts, formalin, and hardening agents.

Claim 27

Dependent Claim 16 words

A method according to claim 4, wherein said stabilizing solution further comprises a fluorescent whitening dye.

Claim 28

Dependent Claim 14 words

A method according to claim 4, wherein said stabilizing solution further comprises a bactericide.

Claim 29

Dependent Claim 16 words

A method according to claim 4, wherein said stabilizing solution further comprises an organic sulfur compound.

Claim 30

Dependent Claim 17 words

A method according to claim 4, wherein said stabilizing solution further comprises aminopolyphosphonic acid or alkylidenediphosphonic acid.

Claim 31

Dependent Claim 28 words

A method according to claim 4, wherein no washing step occurs subsequent to said step of contacting said developed silver halide photographic material with said dye stabilizing solution.

Claim 32

Dependent Claim 25 words

A method according to claim 4, wherein the soluble complex salt of an iron ion concentration is from 4×10 -4 mol/l to 1×10 -2 mol/l.

Claim 33

Dependent Claim 20 words

A method according to claim 30, wherein the contact step is subsequent to a processing step in a bleach-fixing bath.

Claim 34

Independent Claim 88 words

A method of stabilizing a light-sensitive silver halide color photographic material comprising the step of contacting in multiple stabilizing tanks subsequent to a processing step in a bleach-fixing bath or a fixing bath, a developed silver halide color photographic material with a dye stabilizing solution adjusted to a pH value between about 3 and about 9 and comprising a soluble complex salt of an iron ion, said soluble complex salt being present in the last of said multiple tanks in an amount effective to stabilize the photographic material.

Claim 35

Independent Claim 88 words

A method of stabilizing a light-sensitive silver halide color photographic material comprising the step of contacting in multiple stabilizing tanks subsequent to a processing step in a bleach-fixing bath or a fixing bath, a developed silver halide color photographic material with a dye stabilizing solution adjusted to a pH value between about 3 and about 9 and comprising a soluble complex salt of an iron ion, said soluble complex salt being present in the last of said multiple tanks in an amount effective to stabilize the photographic material.

Claim 36

Dependent Claim 28 words

A method according to claim 32, wherein no washing step occurs subsequent to said step of contacting said developed silver halide photographic material with said dye stabilizing solution.

Claim 37

Dependent Claim 25 words

A method according to claim 32, wherein the soluble complex salt of an iron ion concentration is from 1×10 -4 mol/l to 1×10 -1 mol/l.

Claim 38

Dependent Claim 20 words

A method according to claim 34, wherein the contact step is subsequent to a processing step in a bleach-fixing bath.

Claim 39

Independent Claim 94 words

A method of stabilizing a light-sensitive silver halide color photographic material comprising the step of contacting subsequent to a processing step in a bleach-fixing bath or a fixing bath, a developed silver halide color photographic material at the last stage of color processing of said photographic material with a dye stabilizing solution adjusted to a pH value between about 3 and about 9 and comprising a soluble complex salt of an iron ion, said complex salt being present in the last stage of color processing in an amount effective to stabilize the photographic material.

Claim 40

Independent Claim 94 words

A method of stabilizing a light-sensitive silver halide color photographic material comprising the step of contacting subsequent to a processing step in a bleach-fixing bath or a fixing bath, a developed silver halide color photographic material at the last stage of color processing of said photographic material with a dye stabilizing solution adjusted to a pH value between about 3 and about 9 and comprising a soluble complex salt of an iron ion, said complex salt being present in the last stage of color processing in an amount effective to stabilize the photographic material.

Claim 41

Dependent Claim 22 words

A method according to claim 36, wherein the soluble complex salt is present in a concentration of at least 1×10 -4 mol/l.

Claim 42

Dependent Claim 29 words

A method according to claim 36, wherein no washing step occurs subsequent to said step of contacting said developed silver halide color photographic material with said dye stabilizing solution.

Claim 43

Dependent Claim 29 words

A method according to claim 37, wherein no washing step occurs subsequent to said step of contacting said developed silver halide color photographic material with said dye stabilizing solution.

Claim 44

Dependent Claim 25 words

A method according to claim 37, wherein the soluble complex salt of an iron ion concentration is from 1×10 -4 mol/l to 1×10 -1 mol/l.

Claim 45

Dependent Claim 20 words

A method according to claim 40, wherein the contact step is subsequent to a processing step in a bleach-fixing bath.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-07-02	1994-01-01	1994-07-03	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-07-02	1998-01-01	1998-07-03	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-07-02	2002-01-01	2002-07-03	$7700.00	Window Closed / Lapsed

Stablized method of light sensitive silver halide color photographic material

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