PHOTOTHERMOGRAPHIC ELEMENTS WITH SPECTRAL SENSITIZING DYES
    1.
    发明授权
    PHOTOTHERMOGRAPHIC ELEMENTS WITH SPECTRAL SENSITIZING DYES 失效
    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

    IPC分类号: G03C1/498

    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。