EP 0055858 A2 19820714 - Photographic products, diffusion transfer photographic process, and compounds used therefor.
Title (en)
Photographic products, diffusion transfer photographic process, and compounds used therefor.
Title (de)
Photographische Produkte, photographisches Diffusionstransferverfahren und dafür verwendete Verbindungen.
Title (fr)
Produits photographiques, procédé photographique de diffusion par transfert et composés utilisés pour celui-ci.
Publication
Application
Priority
- US 22250281 A 19810105
- US 22250481 A 19810105
- US 22254281 A 19810105
- US 22254381 A 19810105
Abstract (en)
There is disclosed a diffusion transfer photographic system wherein development of an exposed photosensitive element with an aqueous alkaline processing composition is effected in the presence of a compound represented by the formula <CHEM> wherein X represents the nonmetallic atoms necessary to form a nucleus which completes a 5- or 6-membered heterocyclic moiety on said structure including substituted rings and fused rings; R is H, an alkali metal or a group which is cleavable in a photographic aqueous alkaline processing composition; and R1 is either a group, which has a pKa of from about 7 to 14 which is ionizable to an anion whereby the silver salt of the mercaptan (resulting from cleavage or ionization of -SR) is rendered more soluble in the pH range within which R1 is ionized to an anion than it is below that pH range, or a precursor of such a group.
IPC 1-7
IPC 8 full level
G03C 8/00 (2006.01)
CPC (source: EP)
G03C 8/00 (2013.01)
Citation (applicant)
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- DE 2427183 A1 19741212 - EASTMAN KODAK CO
- US 3295976 A 19670103 - ABBOTT JOHN R, et al
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- US 2983606 A 19610509 - ROGERS HOWARD G
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- US 3725062 A 19730403 - ANDERSON A, et al
- US 4076529 A 19780228 - FLECKENSTEIN LEE J, et al
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- US 3345163 A 19671003 - LAND EDWIN H, et al
- US 3415644 A 19681210 - LAND EDWIN H
- US 3647437 A 19720307 - LAND EDWIN H
- US 3573043 A 19710330 - LAND EDWIN H
- US 3594165 A 19710720 - ROGERS HOWARD G
- CA 665952 A 19630702 - NAT RES DEV
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- "Thiazole and Its Derivatives", vol. 34, 1979, JOHN WILEY AND SONS, article "The Chemistry of Heterocyclic Compounds", pages: 260 - 269
- "Heterocyclic Compounds", vol. 5, 1957, JOHN WILEY AND SONS, pages: 439 - 444
- ELDERFIELD: "Heterocyclic Compounds", vol. 5, 1957, JOHN WILEY AND SONS, pages: 439 - 444
- "Heterocyclic Compounds", vol. 8, 1967, JOHN WILEY AND SONS, pages: 1 - 107
- ELDERFIELD: "Heterocyclic Compounds", vol. 8, 1967, JOHN WILEY AND SONS, pages: 1 - 107
- PHARMAZIE, vol. 29, no. 2, 1974, pages 95 - 99
- PHARMAZIE, vol. 29, no. 2, 1974, pages 95 - 99
- KHIM; GETEROTSIKL; SOEDIN, SB.1: AZOTSODERZHASHCHIE GETEROTSIKL, 1967, pages 199 - 201
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0055858 A2 19820714; EP 0055858 A3 19830316; EP 0055858 B1 19860108; AU 548237 B2 19851205; AU 7918182 A 19820715; DE 3173480 D1 19860220
DOCDB simple family (application)
EP 81110833 A 19811229; AU 7918182 A 19820105; DE 3173480 T 19811229