Fogged direct positive silver halide emulsion containing a cyanine dye
申请人:Minnesota Mining and Manufacturing Company
公开号:US04110116A1
公开(公告)日:1978-08-29
New cyanine dyes derived from di-halogen-benzoxazoles and benzothiazoles are desensitizers for silver halide negative emulsions and useful electron acceptor spectral sensitizers for direct positive silver halide emulsions.