The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 1985
Filed:
Feb. 25, 1983
Hitoshi Yoneda, Yokohama, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
The invention provides an apparatus for forming a multicolor image, comprising a photoconductive drum which comprises a conductive substrate, and a photoconductive layer and a transparent insulating layer, a first charger to perform primary charging, a first light source to expose the entire surface of the photoconductive drum, a second charger to secondarily charge the transparent insulating layer at the second polarity, a second light source to emit light, an amount of which is controlled to have two levels in accordance with first and second color image data, a first developing unit to develop the first color image, a third light source to perform a second entire-surface exposure of the photoconductive drum, and a second developing unit to develop the second color image.