Micro-particle dispersion having hydrophobic protective colloid and method of manufacture thereof, photosensitive emulsion and method of manufacturing thereof, and silver salt photohermographic dry imaging material utilizing the same
AssigneeKonica Minolta Medical & Graphic, Inc.
InventorsHiroto Ito, Kazuhito Ihara
Life of this patent
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Abstract
A method of manufacturing a micro-particle dispersion having a hydrophobic protective colloid comprising the steps of: (a) dispensing micro-particles in a hydrophilic dispersant to form a hydrophilic micro-particle dispersion having the hydrophilic dispersant as a protective colloid, and (b) adding a dispersant to the hydrophilic micro-particle dispersion, the dispersant having a functional group capable of ion bonding with a hydrophilic group of the hydrophilic dispersant.
Claims31
A method of manufacturing a micro-particle dispersion having a hydrophobic protective colloid, comprising the steps of:
- (a) dispersing micro-particles in a hydrophilic dispersant to form a hydrophilic micro-particle dispersion having the hydrophilic dispersant as a protective colloid, and
- (b) adding a dispersant to the hydrophilic micro-particle dispersion, the dispersant having a functional group capable of ion bonding with a hydrophilic group of the hydrophilic dispersant.
A photosensitive emulsion prepared by mixing:
- (a) a photosensitive silver halide grain dispersion in which silver halide grains are dispersed in an organic solvent having a water content of not more than 10%, and
- (b) a photo-insensitive organic silver salt grain dispersion in which photo-insensitive organic silver salt grains are dispersed in an organic solvent having a water content of not more than 10%.
A method of manufacturing a photosensitive emulsion comprising the step of mixing:
- (a) a photosensitive silver halide grain dispersion in which silver halide grains are dispersed in an organic solvent having a water content of not more than 10%, and
- (b) a photo-insensitive organic silver salt grain dispersion in which photo-insensitive organic silver salt grains are dispersed in an organic solvent having a water content of not more than 10%.
Dependencies are inferred from the claim text.