The Mead Corporation

William H Simpson

Katherine A Gyure

Rong-Chang Liang

Kerry Kovacs

Amy L Burkholder

Teresa M Thomas

Russell K Messer, Ii

Kenneth P Carpenter

A method for forming microcapsules by enwrapping an oily core material in a formaldehyde condensation product formed in situ wherein a dispersant is used of the formula (I): ##STR1## where: M is an alkali metal cation or a quaternary ammonium group,

Sulfonated-ethylene oxide dispersants for use in preparing

A light-sensitive photohardenable composition comprising a reducing agent, a light-sensitive silver halide, a polymerizable compound, and a coumarin or a ketocoumarin.

Light-sensitive polymerizable compositions containing silver compounds

A photographic material exhibiting improved photographic characteristics comprising a photographic material comprising a support having a layer of microcapsules thereon, and an image-forming agent being associated with said microcapsules, said microcapsules including a mixture of a first subset of microcapsules and a second subset of microcapsules, said first and second subsets of microcapsules being associated with an image-forming agent for the same color, and said first subset of microcapsules providing a higher film speed than said second subset of microcapsules when said first and second subsets of microcapsules are exposed to a broad band white light source and developed under identical conditions.

Microcapsule imaging system having improved dynamic range

Growing community of inventors

Centerville, OH, United States of America

William H Simpson