Patent US4126459A successfully refreshed from Google Patents.
US4126459A
Expired / Lapsed
US
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Thioether substituted silver halide solvents
Assignee: Polaroid Corp
•
Filing: 1976-09-30
•
Granted: 1978-11-21
•
Expires: 1996-09-30
Abstract
Abstract Difunctional compounds wherein one of said functions is a hard or soft atom that ionizes to the corresponding anion in alkaline solution to combine with silver cation and the other of said functions is a non-ionizable soft base that additionally combines with said silver cation are employed as silver halide complexing agents in photography. In a preferred embodiment, the difunctional compounds possess (a) an O, N or C atom that ionizes to the corresponding O.sup.⊖, N.sup.⊖ or C.sup.⊖ anion in basic solution and (b) an --S-- containing moiety excluding --SH and moieties that form --S.sup.⊖ in basic solution wherein the --S-- of said moiety is positioned alpha, beta, gamma, delta, epsilon or zeta to said anion.
Inventors
- 👤 Richard B. Greenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:54
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/36; G03C8/365
Claims Analysis
Total Claims: 121
Claim 1
Independent Claim
182 words
A photographic process for forming a water-soluble complex silver salt with the unexposed and undeveloped silver halide of an imagewise exposed and developed but unfixed photosensitive silver halide layer carried on a support which comprises contacting said silver halide with an aqueous alkaline processing solution including a silver halide solvent which forms a silver complex soluble and diffusible in said aqueous alkaline solution, said silver halide solvent being a compound of the formula M--[(X) n --T] m wherein M represents an aliphatic or aromatic moiety, Y--A, wherein A is an atom selected from O, N and C ionizable in said alkaline solution to the corresponding O.sup.⊖, N.sup.⊖ and C.sup.⊖ anion and Y represents the residue of said moiety; T is R--S--or ##STR16## wherein R is a monovalent hydrocarbon radical and R' represents the carbon atoms necessary to complete an aromatic or aliphatic ring; X represents a methylene group; n is a whole number from 0 to 5; and m is 1 or 2, said --S--of said R--S-- and said ##STR17## being positioned alpha, beta, gamma, delta, epsilon or zeta to said anion.
Claim 2
Dependent Claim
182 words
A photographic process for forming a water-soluble complex silver salt with the unexposed and undeveloped silver halide of an imagewise exposed and developed but unfixed photosensitive silver halide layer carried on a support which comprises contacting said silver halide with an aqueous alkaline processing solution including a silver halide solvent which forms a silver complex soluble and diffusible in said aqueous alkaline solution, said silver halide solvent being a compound of the formula M--[(X) n --T] m wherein M represents an aliphatic or aromatic moiety, Y--A, wherein A is an atom selected from O, N and C ionizable in said alkaline solution to the corresponding O.sup.⊖, N.sup.⊖ and C.sup.⊖ anion and Y represents the residue of said moiety; T is R--S--or ##STR16## wherein R is a monovalent hydrocarbon radical and R' represents the carbon atoms necessary to complete an aromatic or aliphatic ring; X represents a methylene group; n is a whole number from 0 to 5; and m is 1 or 2, said --S--of said R--S-- and said ##STR17## being positioned alpha, beta, gamma, delta, epsilon or zeta to said anion.
Claim 3
Dependent Claim
14 words
A photographic process as defined in claim 1 wherein said M represents a 2-amino-4-hydroxy-1,3,5-triazine.
Claim 4
Dependent Claim
14 words
A photographic process as defined in claim 2 wherein said M represents a 1,2,3,4-tetrazole.
Claim 5
Dependent Claim
14 words
A photographic process as defined in claim 1 wherein said M represents a 5-pyrazolone.
Claim 6
Dependent Claim
14 words
A photographic process as defined in claim 1 wherein said M represents a 1,2-disulfonylalkane.
Claim 7
Dependent Claim
19 words
A photographic process as defined in claim 1 wherein said M represents a sulfonamido derivative of an amino acid.
Claim 8
Dependent Claim
14 words
A photographic process as defined in claim 1 wherein said M represents a 2,4-dihydroxypyrimidine.
Claim 9
Dependent Claim
14 words
A photographic process as defined in claim 1 wherein said M represents a 4,6-dihydroxypyrimidine.
Claim 10
Dependent Claim
13 words
A photographic process as defined in claim 1 wherein said T is R--S--.
Claim 11
Dependent Claim
12 words
A photographic process as defined in claim 9 wherein R is alkyl.
Claim 12
Dependent Claim
13 words
A photographic process as defined in claim 1 wherein said T is ##STR18##
Claim 13
Dependent Claim
17 words
A photographic process as defined in claim 11 wherein R' represents the carbon atoms to complete 2-thienyl.
Claim 14
Dependent Claim
15 words
A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR19##
Claim 15
Dependent Claim
15 words
A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR20##
Claim 16
Dependent Claim
15 words
A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR21##
Claim 17
Dependent Claim
15 words
A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR22##
Claim 18
Dependent Claim
15 words
A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR23##
Claim 19
Dependent Claim
15 words
A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR24##
Claim 20
Dependent Claim
15 words
A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR25##
Claim 21
Dependent Claim
15 words
A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR26##
Claim 22
Dependent Claim
207 words
A photographic process comprising the steps of (1) developing exposed silver halide of an imagewise exposed photosensitive silver halide emulsion layer carried on a support with a silver halide developing agent in aqueous alkaline solution; (2) reacting unreduced silver halide of said photosensitive emulsion with a silver halide solvent which forms a silver complex soluble and diffusible in said aqueous alkaline solution, said silver halide solvent being a compound of the formula M--[(X) n --T] m wherein M represents an aliphatic or aromatic moiety, Y--A, wherein A is an atom selected from O, N and C ionizable in said alkaline solution to the corresponding O.sup.⊖, N.sup.⊖ and C.sup.⊖ anion and Y represents the residue of said moiety; T is R--S-- or ##STR27## wherein R is a monovalent hydrocarbon radical and R' represents the carbon atoms necessary to complete an aromatic or aliphatic ring; X represents a methylene group; n is a whole number from 0 to 5; and m is 1 or 2, said --S-- of said R--S-- and said ##STR28## being positioned alpha, beta, gamma, delta, epsilon or zeta to said anion; (3) transferring said complex silver salt to a superposed image-receiving layer; and (4) reducing said transferred complex silver salt to provide a silver image.
Claim 23
Dependent Claim
207 words
A photographic process comprising the steps of (1) developing exposed silver halide of an imagewise exposed photosensitive silver halide emulsion layer carried on a support with a silver halide developing agent in aqueous alkaline solution; (2) reacting unreduced silver halide of said photosensitive emulsion with a silver halide solvent which forms a silver complex soluble and diffusible in said aqueous alkaline solution, said silver halide solvent being a compound of the formula M--[(X) n --T] m wherein M represents an aliphatic or aromatic moiety, Y--A, wherein A is an atom selected from O, N and C ionizable in said alkaline solution to the corresponding O.sup.⊖, N.sup.⊖ and C.sup.⊖ anion and Y represents the residue of said moiety; T is R--S-- or ##STR27## wherein R is a monovalent hydrocarbon radical and R' represents the carbon atoms necessary to complete an aromatic or aliphatic ring; X represents a methylene group; n is a whole number from 0 to 5; and m is 1 or 2, said --S-- of said R--S-- and said ##STR28## being positioned alpha, beta, gamma, delta, epsilon or zeta to said anion; (3) transferring said complex silver salt to a superposed image-receiving layer; and (4) reducing said transferred complex silver salt to provide a silver image.
Claim 24
Dependent Claim
14 words
A photographic process as defined in claim 21 wherein said M represents a 2-amino-4-hydroxy-1,3,5-triazine.
Claim 25
Dependent Claim
14 words
A photographic process as defined in claim 21 wherein said M represents a 1,2,3,4-tetrazole.
Claim 26
Dependent Claim
14 words
A photographic process as defined in claim 21 wherein said M represents a 5-pyrazolone.
Claim 27
Dependent Claim
14 words
A photographic process as defined in claim 21 wherein said M represents a 1,2-disulfonylalkane.
Claim 28
Dependent Claim
19 words
A photographic process as defined in claim 21 wherein said M represents a sulfonamido derivative of an amino acid.
Claim 29
Dependent Claim
14 words
A photographic process as defined in claim 21 wherein said M represents a 2,4-dihydroxypyrimidine.
Claim 30
Dependent Claim
14 words
A photographic process as defined in claim 21 wherein said M represents a 4,6-dihydroxypyrimidine.
Claim 31
Dependent Claim
13 words
A photographic process as defined in claim 21 wherein said T is R--S--.
Claim 32
Dependent Claim
12 words
A photographic process as defined in claim 29 wherein R is alkyl.
Claim 33
Dependent Claim
13 words
A photographic process as defined in claim 21 wherein said T is ##STR29##
Claim 34
Dependent Claim
17 words
A photographic process as defined in claim 31 wherein R' represents the carbon atoms to complete 2-thienyl.
Claim 35
Dependent Claim
15 words
A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR30##
Claim 36
Dependent Claim
15 words
A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR31##
Claim 37
Dependent Claim
15 words
A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR32##
Claim 38
Dependent Claim
15 words
A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR33##
Claim 39
Dependent Claim
15 words
A photographic process as defined in claim 24 wherein said silver halide solvent is ##STR34##
Claim 40
Dependent Claim
15 words
A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR35##
Claim 41
Dependent Claim
15 words
A photographic process as defined in claim 31 wherein said silver halide solvent is ##STR36##
Claim 42
Dependent Claim
15 words
A photographic process as defined in claim 31 wherein said silver halide solvent is ##STR37##
Claim 43
Dependent Claim
18 words
A photographic process as defined in claim 21 wherein said aqueous alkaline solution additionally includes a viscosity-increasing reagent.
Claim 44
Dependent Claim
186 words
A photographic product which comprises a first sheet-like element comprising a photosensitive silver halide emulsion layer on a support, a second sheet-like element adapted to be superposed with said first sheet-like element and means for retaining an aqueous alkaline processing solution between said first and second sheet-like elements, said processing solution containing a silver halide solvent which forms a siver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound of the formula M--[(X) n --T] m wherein M represents an aliphatic or aromatic moiety, Y--A, wherein A is an atom selected from O, N and C ionizable in said alkaline solution to the corresponding O.sup.⊖, N.sup.⊖ and C.sup.⊖ anion and Y represents the residue of said moiety; T is ##STR38## wherein R is a monovalent hydrocarbon radical and R' represents the carbon atoms necessary to complete an aromatic or aliphatic ring; X represents a methylene group; n is a whole number from 0 to 5; and m is 1 or 2, said --S-- of said R--S-- and said ##STR39## being positioned alpha, beta, gamma, delta, epsilon or zeta to said anion.
Claim 45
Dependent Claim
186 words
A photographic product which comprises a first sheet-like element comprising a photosensitive silver halide emulsion layer on a support, a second sheet-like element adapted to be superposed with said first sheet-like element and means for retaining an aqueous alkaline processing solution between said first and second sheet-like elements, said processing solution containing a silver halide solvent which forms a siver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound of the formula M--[(X) n --T] m wherein M represents an aliphatic or aromatic moiety, Y--A, wherein A is an atom selected from O, N and C ionizable in said alkaline solution to the corresponding O.sup.⊖, N.sup.⊖ and C.sup.⊖ anion and Y represents the residue of said moiety; T is ##STR38## wherein R is a monovalent hydrocarbon radical and R' represents the carbon atoms necessary to complete an aromatic or aliphatic ring; X represents a methylene group; n is a whole number from 0 to 5; and m is 1 or 2, said --S-- of said R--S-- and said ##STR39## being positioned alpha, beta, gamma, delta, epsilon or zeta to said anion.
Claim 46
Dependent Claim
14 words
A photographic product as defined in claim 42 wherein said M represents a 2-amino-4-hydroxy-1,3,5-triazine.
Claim 47
Dependent Claim
14 words
A photographic product as defined in claim 42 wherein said M represents a 1,2,3,4-tetrazole.
Claim 48
Dependent Claim
14 words
A photographic product as defined in claim 42 wherein said M represents a 5-pyrazolone.
Claim 49
Dependent Claim
14 words
A photographic product as defined in claim 42 wherein said M represents a 1,2-disulfonyl-alkane.
Claim 50
Dependent Claim
19 words
A photographic product as defined in claim 42 wherein said M represents a sulfonamido derivative of an amino acid.
Claim 51
Dependent Claim
14 words
A photographic product as defined in claim 42 wherein said M represents a 2,4-dihydroxypyrimidine.
Claim 52
Dependent Claim
14 words
A photographic product as defined in claim 42 wherein said M represents a 4,6-dihydroxypyrimidine.
Claim 53
Dependent Claim
13 words
A photographic product as defined in claim 42 wherein said T is R--S--.
Claim 54
Dependent Claim
13 words
A photographic product as defined in claim 42 wherein said T is ##STR40##
Claim 55
Dependent Claim
17 words
A photographic product as defined in claim 51 wherein R' represents the carbon atoms to complete 2-thienyl.
Claim 56
Dependent Claim
15 words
A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR41##
Claim 57
Dependent Claim
15 words
A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR42##
Claim 58
Dependent Claim
15 words
A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR43##
Claim 59
Dependent Claim
15 words
A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR44##
Claim 60
Dependent Claim
15 words
A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR45##
Claim 61
Dependent Claim
15 words
A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR46##
Claim 62
Dependent Claim
15 words
A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR47##
Claim 63
Dependent Claim
15 words
A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR48##
Claim 64
Dependent Claim
89 words
A photographic product as defined in claim 42 wherein one of said first and second sheet-like elements additionally includes an image-receiving layer selected from a silver precipitating layer and a dye image-receiving layer provided that said first sheet-like element additionally includes a dye image-forming material associated with said silver halide emulsion layer when said image-receiving layer is a dye image-receiving layer, said dye image-forming material being a photographically inert compound capable of undergoing cleavage in the presence of silver ions and/or soluble silver complex to liberate a diffusible dye.
Claim 65
Dependent Claim
19 words
A photographic product as defined in claim 61 wherein said image-receiving layer is included in said second sheet-like element.
Claim 66
Dependent Claim
17 words
A photographic product as defined in claim 62 wherein said image-receiving layer is a silver precipitating layer.
Claim 67
Dependent Claim
60 words
A photographic product as defined in claim 62 wherein said image-receiving layer is a dye image-receiving layer and said first sheet-like element additionally includes a dye image-forming material associated with said silver halide emulsion layer which is a photographically inert compound capable of undergoing cleavage in the presence of silver ions and/or soluble silver complex to liberate a diffusible dye.
Claim 68
Dependent Claim
18 words
A photographic product as defined in claim 42 wherein said aqueous alkaline processing solution includes a viscosity-increasing reagent.
Claim 69
Dependent Claim
99 words
A photographic processing composition comprising an aqueous alkaline solution including a silver halide developing agent and a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound selected from ##STR49## wherein one of R 1 and R 2 is --CH 2x SR 3 and the other of said R 1 and R 2 is --CH 2y SR 3 wherein R 3 is alkyl or alkyl substituted with a solubilizing group, x is a whole number 0 or 1 and y is a whole number from 0 to 5.
Claim 70
Dependent Claim
99 words
A photographic processing composition comprising an aqueous alkaline solution including a silver halide developing agent and a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound selected from ##STR49## wherein one of R 1 and R 2 is --CH 2x SR 3 and the other of said R 1 and R 2 is --CH 2y SR 3 wherein R 3 is alkyl or alkyl substituted with a solubilizing group, x is a whole number 0 or 1 and y is a whole number from 0 to 5.
Claim 71
Dependent Claim
13 words
A photographic processing composition as defined in claim 66 wherein x is 0.
Claim 72
Dependent Claim
13 words
A photographic processing composition as defined in claim 66 wherein x is 1.
Claim 73
Dependent Claim
13 words
A photographic processing composition as defined in claim 66 wherein y is 1.
Claim 74
Dependent Claim
15 words
A photographic processing composition as defined in claim 66 wherein said R 3 is methyl.
Claim 75
Dependent Claim
16 words
A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR50##
Claim 76
Dependent Claim
16 words
A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR51##
Claim 77
Dependent Claim
16 words
A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR52##
Claim 78
Dependent Claim
16 words
A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR53##
Claim 79
Dependent Claim
16 words
A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR54##
Claim 80
Dependent Claim
129 words
A photographic process for forming a water-soluble complex silver salt with the unexposed and undeveloped silver halide of an imagewise exposed and developed but unfixed photosensitive silver halide layer carried on a support which comprises contacting said silver halide with an aqueous alkaline processing solution including a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound selected from ##STR55## wherein one of R 1 and R 2 is --CH 2x SR 3 and the other of said R 1 and R 2 is --CH 2y SR 3 wherein R 3 is alkyl or alkyl substituted with a solubilizing group, x is a whole number 0 or 1 and y is a whole number from 0 to 5.
Claim 81
Dependent Claim
129 words
A photographic process for forming a water-soluble complex silver salt with the unexposed and undeveloped silver halide of an imagewise exposed and developed but unfixed photosensitive silver halide layer carried on a support which comprises contacting said silver halide with an aqueous alkaline processing solution including a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound selected from ##STR55## wherein one of R 1 and R 2 is --CH 2x SR 3 and the other of said R 1 and R 2 is --CH 2y SR 3 wherein R 3 is alkyl or alkyl substituted with a solubilizing group, x is a whole number 0 or 1 and y is a whole number from 0 to 5.
Claim 82
Dependent Claim
12 words
A photographic process as defined in claim 76 wherein x is 0.
Claim 83
Dependent Claim
12 words
A photographic process as defined in claim 76 wherein x is 1.
Claim 84
Dependent Claim
12 words
A photographic process as defined in claim 76 wherein y is 1.
Claim 85
Dependent Claim
13 words
A photographic process as defined in claim 76 wherein R 3 is methyl.
Claim 86
Dependent Claim
15 words
A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR56##
Claim 87
Dependent Claim
15 words
A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR57##
Claim 88
Dependent Claim
15 words
A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR58##
Claim 89
Dependent Claim
15 words
A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR59##
Claim 90
Dependent Claim
15 words
A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR60##
Claim 91
Dependent Claim
153 words
A photographic process comprising the steps of (1) developing exposed silver halide of an imagewise exposed photosensitive silver halide emulsion layer carried on a support with a silver halide developing agent in aqueous alkaline solution; (2) reacting unreduced silver halide of said photosensitive emulsion with a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound selected from ##STR61## wherein one of R 1 and R 2 is --CH 2x SR 3 and the other of said R 1 and R 2 is --CH 2y SR 3 wherein R 3 is alkyl or alkyl substituted with a solubilizing group, x is a whole number 0 or 1 and y is a whole number from 0 to 5; (3) transferring said complex silver salt to a a superposed image-receiving layer; and (4) reducing said transferred complex silver salt to provide a silver image.
Claim 92
Dependent Claim
153 words
A photographic process comprising the steps of (1) developing exposed silver halide of an imagewise exposed photosensitive silver halide emulsion layer carried on a support with a silver halide developing agent in aqueous alkaline solution; (2) reacting unreduced silver halide of said photosensitive emulsion with a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound selected from ##STR61## wherein one of R 1 and R 2 is --CH 2x SR 3 and the other of said R 1 and R 2 is --CH 2y SR 3 wherein R 3 is alkyl or alkyl substituted with a solubilizing group, x is a whole number 0 or 1 and y is a whole number from 0 to 5; (3) transferring said complex silver salt to a a superposed image-receiving layer; and (4) reducing said transferred complex silver salt to provide a silver image.
Claim 93
Dependent Claim
12 words
A photographic process as defined in claim 86 wherein x is 0.
Claim 94
Dependent Claim
12 words
A photographic process as defined in claim 86 wherein x is 1.
Claim 95
Dependent Claim
12 words
A photographic process as defined in claim 86 wherein y is 1.
Claim 96
Dependent Claim
13 words
A photographic process as defined in claim 86 wherein R 3 is methyl.
Claim 97
Dependent Claim
15 words
A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR62##
Claim 98
Dependent Claim
15 words
A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR63##
Claim 99
Dependent Claim
15 words
A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR64##
Claim 100
Dependent Claim
15 words
A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR65##
Claim 101
Dependent Claim
15 words
A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR66##
Claim 102
Dependent Claim
18 words
A photographic process as defined in claim 86 wherein said aqueous alkaline solution additionally includes a viscosity-increasing reagent.
Claim 103
Dependent Claim
161 words
A photographic product which comprises a first sheet-like element comprising a photosensitive silver halide emulsion layer on a support, a second sheet-like element adapted to be superposed with said first sheet-like element and means for retaining an aqueous alkaline processing solution between said first and second sheet-like elements, at least one of said elements and said processing solution containing a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound selected from ##STR67## wherein one of R 1 and R 2 is --CH 2x SR 3 and the other of said R 1 and R 2 is --CH 2y SR 3 wherein R 3 is alkyl or alkyl substituted with a solubilizing group, x is a whole number 0 or 1 and y is a whole number from 0 to 5, said product including a silver halide developing agent in at least one of said elements or said processing composition.
Claim 104
Dependent Claim
161 words
A photographic product which comprises a first sheet-like element comprising a photosensitive silver halide emulsion layer on a support, a second sheet-like element adapted to be superposed with said first sheet-like element and means for retaining an aqueous alkaline processing solution between said first and second sheet-like elements, at least one of said elements and said processing solution containing a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound selected from ##STR67## wherein one of R 1 and R 2 is --CH 2x SR 3 and the other of said R 1 and R 2 is --CH 2y SR 3 wherein R 3 is alkyl or alkyl substituted with a solubilizing group, x is a whole number 0 or 1 and y is a whole number from 0 to 5, said product including a silver halide developing agent in at least one of said elements or said processing composition.
Claim 105
Dependent Claim
12 words
A photographic product as defined in claim 97 wherein x is 0.
Claim 106
Dependent Claim
12 words
A photographic product as defined in claim 97 wherein x is 1.
Claim 107
Dependent Claim
12 words
A photographic product as defined in claim 97 wherein y is 1.
Claim 108
Dependent Claim
13 words
A photographic product as defined in claim 97 wherein R 3 is methyl.
Claim 109
Dependent Claim
15 words
A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR68##
Claim 110
Dependent Claim
15 words
A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR69##
Claim 111
Dependent Claim
15 words
A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR70##
Claim 112
Dependent Claim
15 words
A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR71##
Claim 113
Dependent Claim
15 words
A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR72##
Claim 114
Dependent Claim
22 words
A photographic product as defined in claim 97 wherein one of said first and second sheet-like elements additionally includes an image-receiving layer.
Claim 115
Dependent Claim
19 words
A photographic product as defined in claim 107 wherein said image-receiving layer is included in said second sheet-like element.
Claim 116
Dependent Claim
17 words
A photographic product as defined in claim 108 wherein said image-receiving layer is a silver precipitating layer.
Claim 117
Dependent Claim
47 words
A photographic product as defined in claim 108 wherein said image-receiving layer is a dye image-receiving layer and said first sheet-like element additionally includes a photographically inert compound capable of undergoing cleavage in the presence of silver ions and/or soluble silver complex to liberate a diffusible dye.
Claim 118
Dependent Claim
18 words
A photographic product as defined in claim 97 wherein said aqueous alkaline processing solution includes a viscosity-increasing reagent.
Claim 119
Dependent Claim
225 words
A photographic product which comprises a first sheet-like element comprising a photosensitive silver halide emulsion layer on a support, a second sheet-like element adapted to be superposed with said first sheet-like element and means for retaining an aqueous alkaline processing solution between said first and second sheet-like elements, at least one of said elements and said processing solution containing a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound of the formula M--[(X) n --T] m wherein M represents an aliphatic or aromatic moiety, Y--A, wherein A is an atom selected from O, N and C ionizable in said alkaline solution to the corresponding O 63 , N 63 and C 63 anion and Y represents the residue of said moiety; T is R--S-- or ##STR73## wherein R is a monovalent hydrocarbon radical and R' represents the carbon atoms necessary to complete an aromatic or aliphatic ring; X represents a methylene group; n is a whole number from 0 to 5; and m is 1 or 2, said --S-- of said R--S-- and said ##STR74## being positioned alpha, beta, gamma, delta, epsilon or zeta to said anion, said M being selected from a 2-amino-4-hydroxy-1,3,5-triazine, a 1,2,3,4-tetrazole, a 5-pyrazolone, a 1,2-disulfonyl-alkane, a sulfonamido derivative of an amino acid, a 2,4-dihydroxypyrimidine and a 4,6-dihydroxypyrimidine moiety.
Claim 120
Dependent Claim
225 words
A photographic product which comprises a first sheet-like element comprising a photosensitive silver halide emulsion layer on a support, a second sheet-like element adapted to be superposed with said first sheet-like element and means for retaining an aqueous alkaline processing solution between said first and second sheet-like elements, at least one of said elements and said processing solution containing a silver halide solvent which forms a silver complex soluble in said aqueous alkaline solution, said silver halide solvent being a compound of the formula M--[(X) n --T] m wherein M represents an aliphatic or aromatic moiety, Y--A, wherein A is an atom selected from O, N and C ionizable in said alkaline solution to the corresponding O 63 , N 63 and C 63 anion and Y represents the residue of said moiety; T is R--S-- or ##STR73## wherein R is a monovalent hydrocarbon radical and R' represents the carbon atoms necessary to complete an aromatic or aliphatic ring; X represents a methylene group; n is a whole number from 0 to 5; and m is 1 or 2, said --S-- of said R--S-- and said ##STR74## being positioned alpha, beta, gamma, delta, epsilon or zeta to said anion, said M being selected from a 2-amino-4-hydroxy-1,3,5-triazine, a 1,2,3,4-tetrazole, a 5-pyrazolone, a 1,2-disulfonyl-alkane, a sulfonamido derivative of an amino acid, a 2,4-dihydroxypyrimidine and a 4,6-dihydroxypyrimidine moiety.
Claim 121
Dependent Claim
19 words
A photographic product as defined in claim 112 wherein said silver halide solvent is contained in said processing solution.
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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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |