US PATENT SUBCLASS 430 / 233
.~.~.~ Identified toning or silver transfer image stabilizing ingredient containing

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

199  DF  TRANSFER PROCEDURE BETWEEN IMAGE AND IMAGE LAYER, IMAGE RECEIVING LAYERS, OR ELEMENT CONTAINING AN IMAGE RECEIVING LAYER OR AN INGREDIENT FOR FORMING AN IMAGE RECEIVING LAYER {3}
202  DF  .~ Diffusion transfer process, element, or identified image receiving layers therefor {8}
227  DF  .~.~ Element or image receiving layers for silver salt or silver complex transfer {6}
233.~.~.~ Identified toning or silver transfer image stabilizing ingredient containing

DEFINITION

Classification: 430/233

Identified toning or silver transfer image stabilizing ingredient containing:

(under subclass 227) Subject matter containing an identified ingredient capable of reacting with a silver image to change

the color of the image, including black, or containing an identified ingredient capable of stabilizing, e.g., preventing discoloration, etc., of an image formed in and/or on an image receiving layer by diffusion of a silver salt complex.

SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

9+, for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.