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1. 发明授权

EP0821811B2 PHOTOTHERMOGRAPHIC ELEMENTS WITH SPECTRAL SENSITIZING DYES 失效
标题翻译：光谱增感染料的光热辐射元件
公开(公告)号：EP0821811B2
公开(公告)日：2006-01-25
申请号：EP96907151.3
申请日：1996-02-29
申请人： EASTMAN KODAK COMPANY (a New Jersey corporation)
发明人： MILLER, James, R. , WILLETT, Brian, C. , LYNCH, Doreen, C. , KUMMETH, Becky, J.
IPC分类号： G03C1/498
CPC分类号： C09B23/0066 , C09B23/086 , C09B57/007 , G03C1/127 , G03C1/28 , G03C1/49854 , G03C5/164
摘要： The present invention provides heat-developable, photothermographic elements comprising a support bearing at least one photosensitive, image-forming layer comprising: (a) a photosensitive silver halide; (b) a non-photosensitive, reducible silver source; (c) a reducing agent for silver ions; (d) a binder; and (e) a spectrally sensitizing amount of a compound having the central nucleus, represented by formula (I), wherein: Z is S, O, Se or N-R?3; R1 and R2¿ represent an alkyl group of from 1 to 20 carbon atoms other than carboxy-substituted alkyl, preferably an alkyl group of from 1 to 8 carbon atoms, and most preferably an ethyl group; and R3 is H or alkyl group; X and Y are thioalkyl groups of from 1 to 20 carbon atoms; n = 0 to 4; m = 0 to 4; the sum of n plus m equals at least 1; D1 to D7 each independently represents a methine group and adjacent methine groups selected from D?2, D3, D4, D5 and D6¿ may form cyclic groups; p = 0 or 1; and A- is an anion.
摘要翻译：本发明提供了可热显影的光热敏成像元件，它包括载有至少一个感光成像层的载体，该成像层包含：（a）感光卤化银; （b）非光敏可还原银源; （c）银离子的还原剂; （d）粘合剂; （e）光谱增感量的由式（Ⅰ）表示的具有中心核的化合物，其中：Z是S，O，Se或N-R 3; R1和R2'代表除羧基取代的烷基以外的1至20个碳原子的烷基，优选1至8个碳原子的烷基，最优选乙基; 和R3是H或烷基; X和Y是具有1至20个碳原子的硫代烷基; n = 0至4; m = 0至4; n加m的和等于至少1; D 1至D 7各自独立地表示次甲基，并且选自D 2，D 3，D 4，D 5和D 6'的相邻次甲基可以形成环状基团; p = 0或1; A-是阴离子。

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