US PATENT SUBCLASS 430 / 100
.~.~ Reversal development

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

31  DF  ELECTRIC OR MAGNETIC IMAGERY, E.G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT {18}
97  DF  .~ Post imaging process, finishing, or perfecting composition or product {12}
100.~.~ Reversal development

DEFINITION

Classification: 430/100

Reversal development:

(under subclass 97) Processes wherein the finishing procedure or the medium being imaged is modified to reverse the location of the developed image. Usually the developed image is a positive print.