公开(公告)号：EP0055858B1

公开(公告)日：1986-01-08

申请号：EP81110833.1

申请日：1981-12-29

申请人： POLAROID CORPORATION

发明人： Mehta, Avinash C. ,  Nawn, George H. ,  Taylor, Lloyd D. ,  Bartels-Keith, James R. ,  Borror, Alan L.

IPC分类号： G03C5/54 ,  C07D521/00 ,  C07D257/04

CPC分类号： G03C8/00

公开(公告)号：EP0055858A2

公开(公告)日：1982-07-14

申请号：EP81110833.1

申请日：1981-12-29

申请人： POLAROID CORPORATION

发明人： Mehta, Avinash C. ,  Nawn, George H. ,  Taylor, Lloyd D. ,  Bartels-Keith, James R. ,  Borror, Alan L.

IPC分类号： G03C5/54 ,  C07D521/00 ,  C07D257/04

CPC分类号： G03C8/00

摘要： 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
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 R, is either a group which has a pKa of from about 7 to about 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 R 1 is ionized to an anion than it is below that pH range, or a precursor of such a group.

摘要翻译： 公开了一种扩散转印照相系统，其中用碱处理组合物水溶液曝光的感光元件的显影是在式（CHEM）所表示的化合物的存在下进行的，其中X表示形成核的必需的非金属原子， 所述结构上的5-或6-元杂环部分包括取代的环和稠环; R是H，碱金属或在照相水性碱性处理组合物中可裂解的基团; 并且R 1是具有约7至14的pKa的基团，其可离子化为阴离子，由此使硫醇的银盐（由-SR的裂解或电离产生）在pH范围内变得更可溶，其中 R1被离子化成比其低于该pH范围的阴离子，或这种基团的前体。

公开(公告)号：EP0055858A3

公开(公告)日：1983-03-16

申请号：EP81110833

申请日：1981-12-29

申请人： POLAROID CORPORATION

发明人： Mehta, Avinash C. ,  Nawn, George H. ,  Taylor, Lloyd D. ,  Bartels-Keith, James R. ,  Borror, Alan L.

IPC分类号： G03C05/54 ,  C07D521/00 ,  C07D257/04

CPC分类号： G03C8/00

摘要： 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
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 R, is either a group which has a pKa of from about 7 to about 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 R 1 is ionized to an anion than it is below that pH range, or a precursor of such a group.