公开(公告)号：US06602655B2

公开(公告)日：2003-08-05

申请号：US10125713

申请日：2002-04-18

申请人： Alan S. Fitterman ,  Joan F. Rachel

发明人： Alan S. Fitterman ,  Joan F. Rachel

IPC分类号： G03C530

CPC分类号： G03C5/305 ,  G03C1/34 ,  G03C5/16 ,  G03C5/266 ,  G03C2200/21 ,  G03C2200/42

摘要： A concentrated black-and-white photographic developing composition has improved stability, is compatible with the environment and provides desired sensitometric properties with a combination of particular antifoggants. These antifoggants include a mercapto-substituted tetrazole and a benzimidazole that has one or more electron withdrawing groups. This concentrated composition can be used as a first “part” and mixed, upon dilution, with a diluted second “part” that is a concentrated composition of a gelatin hardening agent. When mixed together, the two diluted concentrates form a working strength developing composition that can be used to provide black-and-white images in various photographic silver halide materials, and particularly in radiographic films.

公开(公告)号：US5994039A

公开(公告)日：1999-11-30

申请号：US138485

申请日：1998-08-24

申请人： Alan S. Fitterman ,  Shirleyanne E. Haye ,  Janet M. Huston ,  Joan F. Rachel

发明人： Alan S. Fitterman ,  Shirleyanne E. Haye ,  Janet M. Huston ,  Joan F. Rachel

IPC分类号： G03C1/005 ,  G03C1/83 ,  G03C5/16 ,  G03C5/305 ,  G03C5/29

CPC分类号： G03C5/305 ,  G03C1/0051 ,  G03C1/832 ,  G03C5/16

摘要： Black-and-white elements, such as radiographic films, can be processed rapidly using a black-and-white developing composition containing a hydroquinone developing agent, and specific amounts of sulfite and borate ions. Thus, the molar ratio of sulfite ions to borate ions is less than 20:1, and the molar ratio of sulfite ions to the hydroquinone developing agent is from about 1:1 to about 2.5:1. The developing composition is effective, rapid and stable.

摘要翻译： 可以使用含有氢醌显影剂的黑白显影组合物和特定量的亚硫酸盐和硼酸根离子来快速处理黑白元素，例如放射照相胶片。 因此，亚硫酸根离子与硼酸根离子的摩尔比小于20:1，亚硫酸根离子与氢醌显影剂的摩尔比为约1:1至约2.5:1。 发展中的组合物是有效，快速和稳定的。

公开(公告)号：US5474879A

公开(公告)日：1995-12-12

申请号：US380781

申请日：1995-01-30

申请人： Alan S. Fitterman ,  Joan F. Rachel

发明人： Alan S. Fitterman ,  Joan F. Rachel

IPC分类号： G03C5/16 ,  G03C1/00 ,  G03C5/30 ,  G03C5/305

CPC分类号： G03C5/305

摘要： An alkaline, hydroquinone free, aqueous black-and-white radiographic developer comprising(a) an ascorbic acid developing agent;(b) a 3-pyrazolidone auxiliary developing agent;(c) an organic antifoggant;(d) a sulfite antioxidant;(e) a buffer;(f) a sequestering agent; and(g) A development accelerator selected from formulas I and II as follows: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 represent alkyl of 1 to 8 carbon atoms or R.sub.1, R.sub.2, and R.sub.3 taken together with N atom to which they are attached form a 6 or 7 membered ring and X represents a tosylate ion, halide, or BF.sub.4.sup.-.

摘要翻译： 一种碱性无氢醌的水性黑白摄影显影剂，其包含（a）抗坏血酸显影剂; （b）3-吡唑烷酮辅助显影剂; （c）有机防灰雾剂; （d）亚硫酸盐抗氧化剂; （e）缓冲器; （f）螯合剂; 和（g）选自式I和II的显影促进剂如下：R 3表示1至8个碳原子的烷基或R 1，R 2和R 3与它们所连接的N原子一起形成6或7元环 X代表甲苯磺酸根离子，卤化物或BF4-。