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. 29, 2010
Filed:
Sep. 04, 2008
Image forming apparatus and secondary transfer roller cleaning method of the image forming apparatus
Kazufumi Ishida, Shizuoka, JP;
Kazufumi Ishida, Shizuoka, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
A secondary transfer roller rotates in a first rotation direction during printing, and rotates in a second rotation direction opposite to the first rotation direction during a stop of the printing only within a specified range. When an image forming apparatus includes a lubricant supply unit, the secondary transfer roller rotates in the second rotation direction within the range where an amount of movement of a contact surface between the secondary transfer roller and the cleaning member is 3 mm or more and not larger than a distance on the contact surface from a contact part between the secondary transfer roller and the lubricant supply unit to a contact part between the secondary transfer roller and the cleaning member in the second rotation direction.