US PATENT SUBCLASS 430 / 379
.~.~.~.~.~ Reversal process

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

357  DF  COLOR IMAGING PROCESS {11}
374  DF  .~ Using identified radiation sensitive composition in the formation of color image {1}
375  DF  .~.~ Silver compound sensitizer {3}
376  DF  .~.~.~ And coupler {9}
378  DF  .~.~.~.~ Direct positive process {1}
379.~.~.~.~.~ Reversal process

DEFINITION

Classification: 430/379

Reversal process:

(under subclass 378) Processes wherein the radiation sensitive silver compound left after the first negative development is used for forming a positive color image.

(1) Note. The couplers used in the process can be in the emulsion layers or in the developing compositions.

SEE OR SEARCH THIS CLASS, SUBCLASS:

378, for production of direct positive color image.