US PATENT SUBCLASS 430 / 242
.~.~.~.~.~ Redox cleavable dye or dye precursor releaser

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}
235  DF  .~.~ Dye image formation process {1}
236  DF  .~.~.~ Using silver salt sensitizer {4}
241  DF  .~.~.~.~ Using identified dye forming compound other than colorless color developer or dye mordant or using identified organic solvent {2}
242.~.~.~.~.~ Redox cleavable dye or dye precursor releaser

DEFINITION

Classification: 430/242

Redox cleavable dye or dye precursor releaser:

(under subclass 241) Processes wherein the dye image forming compound comprises a dye or dye precursor moiety and at least one other moiety which after being oxidized or reduced in a medium is cleaved separating the dye or dye precursor moiety from the other moiety to form a dye or dye precursor moiety having a substantially different diffusibility from the uncleaved dye image forming compound.