Additives for contrast control in organic photoconductor composi

Details Additives for contrast control in organic photoconductor composi Additives for contrast control in organic photoconductor composi

1977-02-08

1979-05-01

Martin, Jr., Roland E.

Gas separation: apparatus

Magnetic separating means

96 15R, G03G 506, G03G 509

Patent

active

041521528

ABSTRACT:
Electrostatic contrast control in p-type electrophotographic elements is achieved by incorporating into the photoconductive layer a hole trapping agent such as a tetraphenylboron anion, bromide ion, iodide ion, oxidizable dye such as a carbocyanine and dicarbocyanine, merocarbocyanine and merodicarbocyanine, styryl, oxonol, hemioxonol, or hemicyanine. Usable hole trapping agents have an oxidation potential in a neutral solution of at least 0.1 volts less than that of the photoconductor in the photoconductive layer.

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