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:
Apr. 27, 1982
Filed:
Oct. 29, 1980
Fuminobu Nishimura, Yokohama, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
An electrostatic copying apparatus comprising a photosensitive layer prepared from a photoconductive material, corona discharge unit which generates a corona discharge to form an electrified corona discharge region on the photosensitive layer, light-emitting unit which is disposed adjacent to the corona discharge unit and emits light beams over the electrified corona discharge region of the photosensitive layer, thereby producing a conductive light-irradiated region on the photosensitive layer, and adjustment device for controlling the dimensions of the light-irradiated region to control the overlapping portions of the light-irradiated region and corona discharge region, thereby selectively defining the substantially electrified portion of the corona discharge region.