US PATENT SUBCLASS 430 / 402
.~ Achromatic image from organic compound

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

401  DF  POST IMAGING PROCESSING {16}
402.~ Achromatic image from organic compound

DEFINITION

Classification: 430/402

Achromatic image from organic compound:

(under subclass 401) Processes wherein a black organic compound is created in the product in an imagewise manner.

(1) Note. These patents generally form a black dye by a coupling reaction similar to that which is used to form a colored dye in color photography.