US PATENT SUBCLASS 430 / 57.2
.~.~.~ With plural charge generation layers

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}
56  DF  .~ Radiation-sensitive composition or product {10}
57.1  DF  .~.~ Having plural conductive layers {2}
57.2.~.~.~ With plural charge generation layers {3}
57.3  DF  .~.~.~.~> Nitrogen hetero ring compound in one or more charge generation layers
57.4  DF  .~.~.~.~> Inorganic silicon (e.g., elemental silicon, silicon alloy or inorganic compound thereof) in one or more charge generation layers {2}
57.8  DF  .~.~.~.~> Inorganic selenium (Se) (e.g., elemental selenium, selenium alloy or inorganic compound thereof)

DEFINITION

Classification: 430/57.2

With plural charge generation layers:

(under subclass 57.1) Subject matter having plural layers that generate free charge carriers by absorption of radiation

at least one of which is identified by chemical name.