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. 21, 2016
Filed:
Dec. 21, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Tetsuya Ohta, Abiko, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image forming apparatus includes a movable image bearing member, a transfer member, a constant voltage source for applying a transfer voltage and a returning voltage to the transfer member, an executing portion capable of selectively executing an operation in a first mode in which image formation is executed at a first speed and an operation in a second mode in which the image formation is effected at a speed slower than the first speed, and a setting portion for setting a falling time from transfer voltage falling start timing toward the returning voltage until a current flowing through said transfer member is zero. The setting portion sets the falling time in the operation in the second mode so as to be longer than the falling time in the operation in the first mode.