Phenylsulfamoyl couplers, coupler compositions and...

Details Phenylsulfamoyl couplers, coupler compositions and... Phenylsulfamoyl couplers, coupler compositions and...

G - Physics

03

C

96/106, 96/147,

G03C 1/10 (2006.01) G03C 7/34 (2006.01)

Patent

CA 1099288

Abstract of the Disclosure Ballasted primary and secondary 3'-sulfamoyl-1- hydroxy-2-naphthanilide couplers are disclosed as well as compositions and photographic elements containing these couplers in coupler solvent particles. The coupler sol- vent particles are comprised of a combination or a coupler solvent and the coupler capable of permitting the forma- tion of a microcrystalline dye. Surprisingly these micro- crystalline dyes exhibit a broadened absorption character- istic in the 750 to 850 nm region of the spectrum. Dye images having such absorption characteristics are partic- ularly suited to forming integral infrared absorbing sound tracks in photographic elements, such as motion picture projection films.

312037

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