US PATENT SUBCLASS 430 / 224
.~.~.~.~.~ Dye developer or leuco dye developer

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}
211  DF  .~.~ Element or identified image receiving layers for dye image formation {1}
212  DF  .~.~.~ Element containing silver salt sensitizer or either element or image receiving layer for use therewith {8}
222  DF  .~.~.~.~ Identified dye image forming compound other than colorless color developer or dye mordant containing or identified organic solvent for an incorporated ingredient {3}
224.~.~.~.~.~ Dye developer or leuco dye developer {1}
225  DF  .~.~.~.~.~.~> Azo

DEFINITION

Classification: 430/224

Dye developer or leuco dye developer:

(under subclass 222) Subject matter wherein the dye image forming compound comprises both a silver halide developing moiety and a dye or leuco dye moiety as the same or distinct moieties.

(1) Note. A leuco dye moiety is considered to be a moiety which becomes a dye moiety after its oxidation or reduction.