US PATENT SUBCLASS 430 / 226
.~.~.~.~.~ Coupler with coupling-off ballast, dye or dye precursor moiety

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}
226.~.~.~.~.~ Coupler with coupling-off ballast, dye or dye precursor moiety

DEFINITION

Classification: 430/226

Coupler with coupling-off ballast, dye or dye precursor moiety:

(under subclass 222) Subject matter wherein the dye image forming compound comprises a coupler moiety substituted at its coupling site with at least one other moiety selected from dye, dye precursor or ballast moieties and which is capable upon a coupling, i.e., condensation reaction, at its coupling site with another compound of cleaving the other moiety from the coupler moiety.

(1) Note. The coupler moiety need not be a color coupler moiety, i.e., a coupler moiety that forms a dye by a coupling reaction.