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:
Jan. 25, 1994
Filed:
Mar. 17, 1993
Junichi Matsuno, Toride, JP;
Masaru Nakano, Tsukuba, JP;
Hitachi, Ltd. and Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an electrophotographic copying apparatus in which a copy sheet is attracted to and delivered by a transfer belt to perform a transfer operation, wherein a sag of the leading end of the copy sheet is removed to prevent the copy sheet from being attracted to a photoreceptor, venting method of preventing attraction of the copy sheet. Stacked copy sheets are individually separately supplied, with each of the copy sheets being electrostatically attracted to and delivered by the transfer belt. The copy sheet is held between the photoreceptor and the transfer belt and is in contact with them. The photoreceptor carries an electrostatic latent image corresponding to an image information and a toner electrostatically attracted to the electrostatic latent image. The toner image on the photoreceptor is transferred to the copy sheet. The leading end of the copy sheet delivered to a transfer section defined by the photoreceptor, the transfer belt and a transfer corrotron is slightly bent toward the photoreceptor.