US PATENT SUBCLASS 430 / 58.25
.~.~.~.~ Cyclic ketone, cyclodicyanomethylene, or cyclomethylenemalonate in charge transport layer

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}
58.05  DF  .~.~.~ Charge transport layer {8}
58.25.~.~.~.~ Cyclic ketone, cyclodicyanomethylene, or cyclomethylenemalonate in charge transport layer

DEFINITION

Classification: 430/58.25

Cyclic ketone, cyclodicyanomethylene, or cyclomethylenemalonate in charge transport layer:

(under subclass 58.05) Subject matter wherein the charge transport layer contains a cyclic ketone compound, e.g., quinones O=ring=O; a polycyclic ring ketone, e.g., O= condensed rings, etc.; a cyclodicyanomethylene, e.g., (NC) 2C=ring; or a cyclomethylenemalonate (ROCO)2C=ring wherein ring includes C to C unstauration (e.g., C=C) and R is alkyl or H.