Minnesota Mining and Manufacturing Company

Gerard H Kinderman

James F Sanders

Ronald S Steelman

Robert L Rutledge

A lithographic concentrate capable of being mixed with water to provide a lithographic fountain solution comprising a low molecular weight polyacrylic acid, colloidal silica and, preferably, phosphate ion.

Lithographic fountain concentrate

A photolithographic sheet capable of forming a lithographic printing plate upon imaging via silver salt diffusion transfer comprising a support, a silver halide emulsion, and a receptor layer overlying the emulsion, the receptor layer comprising a high molecular weight hydrophilic polymer and catalytic nuclei for silver salt diffusion transfer development, the major proportion of the polymer being a dialdehyde polysaccharide.

Photolithographic element containing a silver-receptive

A presensitized photographic speed light sensitive sheet structure suitable for producing a dry transfer element, comprising a substrate having a release coating thereon, and overlying the release coating a photo-sensitive layer comprising a silver halide emulsion. After light exposure to an original and development, the remaining silver image portions have a greater adhesion for a receptor surface when applied thereto under pressure than the adhesion of the indicia to the substrate under like pressure.

Growing community of inventors

Saint Paul, MN, United States of America

Gerard H Kinderman