US PATENT SUBCLASS 430 / 101
.~.~ Impression 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}
101.~.~ Impression development

DEFINITION

Classification: 430/101

Impression development:

(under subclass 97) Processes wherein the latent image is developed by direct surface-to-surface transfer of dry powder toner to the medium. Usually the toner need not carry an electrical charge. Such developing procedures as roller, contact, touchdown, donor, and transfer developing techniques are included.