SILVER HALIDE PHOTOGRAPHIC EMULSION WITH MIXED MICROCRYSTALS Russian patent published in 1999 - IPC

FIELD: light-sensitive materials. SUBSTANCE: emulsion is prepared by mixing chemically sensitized emulsion I and chemically sensitized emulsion II and contains microcrystals. Emulsion 1 contains silver bromide, silver bromoiodide, and silver chlorobromide plate microcrystals with d_av:h_av = 2:1 to 25: 1 with d_av = 0.25 to 2.5 mcm, and emulsion 11 contains bromoiodide, silver chlorobromide, or silver chlorobromoiodide regular microcrystals with d_av1:d_avП = 1.25:1 to 16.7:1. EFFECT: increased information content of photographic layer. 7 cl, 5 tbl, 18 ex