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:
Feb. 17, 1987
Filed:
May. 23, 1985
Applicant:
Inventor:
Tadashi Tonegawa, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ;
Abstract
There is disclosed an electrophotographic copying method applicable to an electrophotographic copying machine providing a photo-sensitive drum (hereinafter referred to as a first drum) and a drum capable of being brought into contact with or being separated from the first drum on the surface of which an insulation film is formed (hereinafter referred to as a second drum). According to the present method, a latent image formed on the first drum is developed and, thereafter, the toner image transferred to the second drum first. The image transferred to the second drum is used to reproduce a second latent image on the first drum to obtain a copy therefrom.