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:
Jun. 24, 1997
Filed:
Oct. 18, 1994
Minolta Co., Ltd., Osaka, JP;
Abstract
An image forming apparatus of the electrophotographic type wherein a toner image formed on a photosensitive drum is transferred to recording paper by a transfer roller to form an image is disclosed. When the size of the toner image formed on the photosensitive drum is larger than the size of the recording paper, a portion of the toner image which projects from the recording paper is transferred to the transfer roller and will soil another sheet of recording paper supplied subsequently. Therefore, when comparison between the size of the toner image formed on the photosensitive drum and the size of the recording paper reveals a difference between them, an image forming operation is interrupted and a cleaning device is rendered operative to remove the toner from the transfer roller. Thereupon, presence or absence and the size of an image area protruding from the recording paper are determined from the image size and the recording paper size, and the number and the time of operations of the cleaning device are controlled to minimum values in accordance with the determination.