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:
Mar. 08, 2016
Filed:
Dec. 23, 2014
Canon Finetech Inc., Misato-shi, Saitama-ken, JP;
Kenta Matsuzaki, Noda, JP;
Canon Finetech Inc., Misato-shi, JP;
Abstract
An image forming apparatus, which is capable of suitably preventing a separating discharge phenomenon from occurring at a fixing entrance guide for guiding a recording material to a fixing device, includes a control portion for controlling a transfer bias voltage and a separation bias voltage. A transfer roller transfers a toner image from a surface of a photosensitive drum onto a sheet at a transfer nip portion, and the control portion changes the transfer bias voltage applied to the transfer roller and the separation bias voltage applied to a charge eliminating needle to have larger voltage values before a trailing edge of the sheet, which is conveyed to the transfer nip portion and is subjected to transfer, passes through the transfer nip portion.