US PATENT SUBCLASS 430 / 264
SILVER HALIDE COLLOID TANNING PROCESS, COMPOSITION, OR PRODUCT

Current as of: June, 1999
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430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

264SILVER HALIDE COLLOID TANNING PROCESS, COMPOSITION, OR PRODUCT {2}
265  DF  .~> Process using lithographic infectious developer {2}
268  DF  .~> Infectious developer composition

DEFINITION

Classification: 430/264

SILVER HALIDE COLLOID TANNING PROCESS, COMPOSITION, OR PRODUCT:

(under the class definition) Processes wherein a radiation sensitive silver halide and polymer containing medium is imaged with radiation to (a) decrease the solubility to a developing solvent in imaged areas, (b) increase the oleophilic property in imaged areas, or (c) to produce a high contrast, viz, gamma significantly above unit gamma such as a gamma of 2.0 silver image, in radiation exposed areas of the medium; radiation sensitive composition and product used in the process and used solely after image processing, as a printing plate or electrical device; also a finishing or perfecting composition and product used in the process.

(1) Note. Included herein are those processes wherein an

oleophilic radiation insolubilized image is formed in radiation exposed areas of the medium.