Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce color reproduction
Patent
1985-05-29
1986-06-10
Martin, Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce color reproduction
430 45, 430 46, 430901, G03G 1301
Patent
active
045943028
ABSTRACT:
A developing process for two-colored electrophotography comprising: (1) charging the surface of a photoreceptor having a conductive substrate and two photosensitive layers successively formed on the conductive substrate, said photosensitive layers having different spectral sensitivities, (2) charging the surface of said photoreceptor with a different polarity from the charging polarity in step (1), (3) exposing a two-colored original to form electrostatic latent images, which have different polarities corresponding to the two-colored original, on the surface of said photoreceptor, (4) transferring a first color toner charged with a different polarity from the charging polarity of one of the electrostatic latent images on said electrostatic latent image to develop said electrostatic latent image iwth the first color toner, (5) exposing the surface of said photoreceptor to eliminate electric charges with the same polarity as the first color toner which are induced on the surface of said photoreceptor in the vicinity of said electrostatic latent image developed by the first color toner, and (6) transferring a second color toner charged with a different polarity from the charging polarity of the other electrostatic latent image on said other electrostatic latent image to develop said other electrostatic latent image with the second color toner.
Martin Roland E.
Mita Industrial Co. Ltd.
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