Cyan dye image forming method

Abstract

Abstract PURPOSE: To increase the dye forming speed and coloring density of a 2,5-diacylaminophenol cyan coupler without using benzyl alcohol in development by introducing one or more specified org. groups into the 2- and 5-position substituents of the coupler. CONSTITUTION: A cyan dye image is formed in the presence of a cyan coupler represented by the formula (where each of R and R' is H or 1W20C alkyl, each of R 1 and R 2 is H, oxycarbonyl, sulfonyloxy, oxysulfonyl, arylsulfonamido, arylsulfamoyl or an org. group having at least one sulfone group, R 1 and R 2 are not H simultaneously, each of X and Y is alkylene or arylene, Z is H or a coupling elimination group, each of n and m is 1 or 2). Thus, by introducing such specified groups into R 1 and R 2 , the coupler has high solubility in alkali, a high b.p. solvent, etc., high dispersion stability in an emulsion, satisfactory spectral absorption characteristics and improved image preservability, that is, improved resistance to heat, moisture and light. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Wataru Fujimatsu
• 👤 Yasushi Usagawa
• 👤 Osamu Sasaki
• 👤 Katsumi Matsuura

Bibliographic Details