Claims
- 1. 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).sub.n --T].sub.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..crclbar., N.sup..crclbar. and C.sup..crclbar. 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.
- 2. A photographic process as defined in claim 1 wherein said M represents a 2-amino-4-hydroxy-1,3,5-triazine.
- 3. A photographic process as defined in claim 2 wherein said M represents a 1,2,3,4-tetrazole.
- 4. A photographic process as defined in claim 1 wherein said M represents a 5-pyrazolone.
- 5. A photographic process as defined in claim 1 wherein said M represents a 1,2-disulfonylalkane.
- 6. A photographic process as defined in claim 1 wherein said M represents a sulfonamido derivative of an amino acid.
- 7. A photographic process as defined in claim 1 wherein said M represents a 2,4-dihydroxypyrimidine.
- 8. A photographic process as defined in claim 1 wherein said M represents a 4,6-dihydroxypyrimidine.
- 9. A photographic process as defined in claim 1 wherein said T is R--S--.
- 10. A photographic process as defined in claim 9 wherein R is alkyl.
- 11. A photographic process as defined in claim 1 wherein said T is ##STR18##
- 12. A photographic process as defined in claim 11 wherein R' represents the carbon atoms to complete 2-thienyl.
- 13. A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR19##
- 14. A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR20##
- 15. A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR21##
- 16. A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR22##
- 17. A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR23##
- 18. A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR24##
- 19. A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR25##
- 20. A photographic process as defined in claim 1 wherein said silver halide solvent is ##STR26##
- 21. 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).sub.n --T].sub.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..crclbar., N.sup..crclbar. and C.sup..crclbar. 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.
- 22. A photographic process as defined in claim 21 wherein said M represents a 2-amino-4-hydroxy-1,3,5-triazine.
- 23. A photographic process as defined in claim 21 wherein said M represents a 1,2,3,4-tetrazole.
- 24. A photographic process as defined in claim 21 wherein said M represents a 5-pyrazolone.
- 25. A photographic process as defined in claim 21 wherein said M represents a 1,2-disulfonylalkane.
- 26. A photographic process as defined in claim 21 wherein said M represents a sulfonamido derivative of an amino acid.
- 27. A photographic process as defined in claim 21 wherein said M represents a 2,4-dihydroxypyrimidine.
- 28. A photographic process as defined in claim 21 wherein said M represents a 4,6-dihydroxypyrimidine.
- 29. A photographic process as defined in claim 21 wherein said T is R--S--.
- 30. A photographic process as defined in claim 29 wherein R is alkyl.
- 31. A photographic process as defined in claim 21 wherein said T is ##STR29##
- 32. A photographic process as defined in claim 31 wherein R' represents the carbon atoms to complete 2-thienyl.
- 33. A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR30##
- 34. A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR31##
- 35. A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR32##
- 36. A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR33##
- 37. A photographic process as defined in claim 24 wherein said silver halide solvent is ##STR34##
- 38. A photographic process as defined in claim 21 wherein said silver halide solvent is ##STR35##
- 39. A photographic process as defined in claim 31 wherein said silver halide solvent is ##STR36##
- 40. A photographic process as defined in claim 31 wherein said silver halide solvent is ##STR37##
- 41. A photographic process as defined in claim 21 wherein said aqueous alkaline solution additionally includes a viscosity-increasing reagent.
- 42. 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).sub.n --T].sub.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..crclbar., N.sup..crclbar. and C.sup..crclbar. 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.
- 43. A photographic product as defined in claim 42 wherein said M represents a 2-amino-4-hydroxy-1,3,5-triazine.
- 44. A photographic product as defined in claim 42 wherein said M represents a 1,2,3,4-tetrazole.
- 45. A photographic product as defined in claim 42 wherein said M represents a 5-pyrazolone.
- 46. A photographic product as defined in claim 42 wherein said M represents a 1,2-disulfonyl-alkane.
- 47. A photographic product as defined in claim 42 wherein said M represents a sulfonamido derivative of an amino acid.
- 48. A photographic product as defined in claim 42 wherein said M represents a 2,4-dihydroxypyrimidine.
- 49. A photographic product as defined in claim 42 wherein said M represents a 4,6-dihydroxypyrimidine.
- 50. A photographic product as defined in claim 42 wherein said T is R--S--.
- 51. A photographic product as defined in claim 42 wherein said T is ##STR40##
- 52. A photographic product as defined in claim 51 wherein R' represents the carbon atoms to complete 2-thienyl.
- 53. A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR41##
- 54. A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR42##
- 55. A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR43##
- 56. A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR44##
- 57. A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR45##
- 58. A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR46##
- 59. A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR47##
- 60. A photographic product as defined in claim 42 wherein said silver halide solvent is ##STR48##
- 61. 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.
- 62. A photographic product as defined in claim 61 wherein said image-receiving layer is included in said second sheet-like element.
- 63. A photographic product as defined in claim 62 wherein said image-receiving layer is a silver precipitating layer.
- 64. 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.
- 65. A photographic product as defined in claim 42 wherein said aqueous alkaline processing solution includes a viscosity-increasing reagent.
- 66. 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.sup.1 and R.sup.2 is --CH.sub.2x SR.sup.3 and the other of said R.sup.1 and R.sup.2 is --CH.sub.2y SR.sup.3 wherein R.sup.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.
- 67. A photographic processing composition as defined in claim 66 wherein x is 0.
- 68. A photographic processing composition as defined in claim 66 wherein x is 1.
- 69. A photographic processing composition as defined in claim 66 wherein y is 1.
- 70. A photographic processing composition as defined in claim 66 wherein said R.sup.3 is methyl.
- 71. A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR50##
- 72. A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR51##
- 73. A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR52##
- 74. A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR53##
- 75. A photographic processing composition as defined in claim 66 wherein said silver halide solvent is ##STR54##
- 76. 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.sup.1 and R.sup.2 is --CH.sub.2x SR.sup.3 and the other of said R.sup.1 and R.sup.2 is --CH.sub.2y SR.sup.3 wherein R.sup.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.
- 77. A photographic process as defined in claim 76 wherein x is 0.
- 78. A photographic process as defined in claim 76 wherein x is 1.
- 79. A photographic process as defined in claim 76 wherein y is 1.
- 80. A photographic process as defined in claim 76 wherein R.sup.3 is methyl.
- 81. A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR56##
- 82. A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR57##
- 83. A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR58##
- 84. A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR59##
- 85. A photographic process as defined in claim 76 wherein said silver halide solvent is ##STR60##
- 86. 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.sup.1 and R.sup.2 is --CH.sub.2x SR.sup.3 and the other of said R.sup.1 and R.sup.2 is --CH.sub.2y SR.sup.3 wherein R.sup.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.
- 87. A photographic process as defined in claim 86 wherein x is 0.
- 88. A photographic process as defined in claim 86 wherein x is 1.
- 89. A photographic process as defined in claim 86 wherein y is 1.
- 90. A photographic process as defined in claim 86 wherein R.sup.3 is methyl.
- 91. A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR62##
- 92. A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR63##
- 93. A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR64##
- 94. A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR65##
- 95. A photographic process as defined in claim 86 wherein said silver halide solvent is ##STR66##
- 96. A photographic process as defined in claim 86 wherein said aqueous alkaline solution additionally includes a viscosity-increasing reagent.
- 97. 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.sup.1 and R.sup.2 is --CH.sub.2x SR.sup.3 and the other of said R.sup.1 and R.sup.2 is --CH.sub.2y SR.sup.3 wherein R.sup.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.
- 98. A photographic product as defined in claim 97 wherein x is 0.
- 99. A photographic product as defined in claim 97 wherein x is 1.
- 100. A photographic product as defined in claim 97 wherein y is 1.
- 101. A photographic product as defined in claim 97 wherein R.sup.3 is methyl.
- 102. A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR68##
- 103. A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR69##
- 104. A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR70##
- 105. A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR71##
- 106. A photographic product as defined in claim 97 wherein said silver halide solvent is ##STR72##
- 107. A photographic product as defined in claim 97 wherein one of said first and second sheet-like elements additionally includes an image-receiving layer.
- 108. A photographic product as defined in claim 107 wherein said image-receiving layer is included in said second sheet-like element.
- 109. A photographic product as defined in claim 108 wherein said image-receiving layer is a silver precipitating layer.
- 110. 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.
- 111. A photographic product as defined in claim 97 wherein said aqueous alkaline processing solution includes a viscosity-increasing reagent.
- 112. 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).sub.n --T].sub.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.63 , N.sup.63 and C.sup.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.
- 113. A photographic product as defined in claim 112 wherein said silver halide solvent is contained in said processing solution.
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS
This application is a continuation-in-part of my copending application Ser. No. 686,587 filed May 14, 1976, and now abandoned which is a continuation-in-part of application Ser. No. 563,306 filed Apr. 1, 1975, now abandoned, which, in turn, is a continuation-in-part of my application Ser. No. 463,263 filed Apr. 23, 1974, now abandoned.
US Referenced Citations (13)
Continuation in Parts (3)
|
Number |
Date |
Country |
Parent |
686587 |
May 1976 |
|
Parent |
563306 |
Apr 1975 |
|
Parent |
463263 |
Apr 1974 |
|