Electrophotography – Supplemental electrophotographic process – Exposure or charging
Patent
1996-11-06
1998-05-05
Pendegrass, Joan H.
Electrophotography
Supplemental electrophotographic process
Exposure or charging
399220, 430 31, G03G 1504, G03G 2100
Patent
active
057490295
ABSTRACT:
In an electrophotographic process using an electrophotographic photoconductor having a photoconductive layer which contains a charge generation material and a charge transport material, the charge transport material being convertible from a neutral state into a charged state during the photoconduction in the photoconductive layer, when light is applied to the photoconductive layer, there is employed at least one type of rays of light selected from type 1 which has a light emission peak, and type 2 and type 3, each of which has a continuous spectrum with a threshold wavelength value, in such a manner that a half-width wavelength range of type 1 does not overlap a peak wavelength or a half-width wavelength range of an absorption peak of the charge transport material in the charged state, and a half value of a threshold wavelength value of each of type 2 or type 3 is beyond the wavelength or a half-width wavelength range of any of extreme end absorption peaks in terms of the wavelength of the absorption light of the charge transport material in the charged state, and an electrophotographic apparatus for performing the electrophotographic process is provided.
REFERENCES:
patent: 4533232 (1985-08-01), Fujimura et al.
Pendegrass Joan H.
Ricoh & Company, Ltd.
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