申请人:Eastman Kodak Company
公开号:US04108667A1
公开(公告)日:1978-08-22
The invention relates to methine dyes and photographic silver halide compositions and film elements comprising methine dyes which contain 9,9a-dihydropyrido-[1,2-a]indolium nuclei, benzo[a]quinolizinium nuclei or 6,7-dihydrobenzo[a]quinolizinium nuclei.
本发明涉及甲烯染料、含有甲烯染料的摄影银卤化物组合物和胶片元素,所述甲烯染料包含9,9a-二氢吡啶并[1,2-a]吲哚核、苯并[a]喹啉核或6,7-二氢苯并[a]喹啉核。