BLENDED GRAIN DIRECT-POSITIVE EMULSIONS HAVING A CORE-SHELL SILVER HALIDE GRAIN WITH COEFFICIENT OF VARIATION LESS THAN 20

摘要

Abstract of the DisclosureBlended emulsions for use in forming adirect-positive image are disclosed. The emulsionsare comprised of a first, radiation-sensitive core-shell grain population having a relatively lowcoefficient of variation and a second, substantiallysmaller size grain population capable or internallytrapping photolytically generated electrons. Photo-graphic elements incorporating the blended emulsionsexhibit improved covering power and can exhibitenhanced speed.