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:
Nov. 25, 2025
Filed:
Feb. 23, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Tomohiro Saito, Chiba, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes an image bearing member; a toner image forming portion, a transfer member, a voltage applying portion, an acquiring portion, and a controller. In continuous printing in which toner images are continuously transferred onto a first recording material and a second recording material, in a case that the first recording material is an envelope on the basis of recording material information, the controller carries out control so that a transfer member cleaning operation, in which a first cleaning voltage of the same polarity as a normal charge polarity of toner and a second cleaning voltage of an opposite polarity to the normal charge polarity of the toner are alternately applied by the voltage applying portion, is executed after the first recording material passes through the transfer portion and before the second recording material reaches the transfer portion.