申请人:Zengerle Paul L.
公开号:US20090234131A1
公开(公告)日:2009-09-17
A non-infrared sensitized low silver photographic element with a non-light sensitive layer, preferably an antihalation layer, containing a diphenylaminocyclopentene heptacyanine benzothiazolium infrared dye where the benzothiazolium groups have electron-withdrawing substituents on the phenyl ring and solubilzed alkyl groups on the nitrogen. The infrared dye can be present as a liquid-crystalline dispersion. This class of infrared dyes form J-aggregrated species in a liquid-crystalline or a solid particle dispersion with high IR density and low visible absorbance.
一种非红外敏化低银光感光元件,具有非光敏感层,最好是一种含有二苯胺环戊烯七氰基苯并噻唑离子红外染料的抗光散层,其中苯并噻唑离子基团在苯环上具有电子吸引取代基,氮原子上具有可溶性烷基基团。红外染料可以以液晶分散形式存在。这类红外染料在液晶或固体颗粒分散体系中形成J-聚集物种,具有高红外密度和低可见吸收率。