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:
May. 01, 2018
Filed:
Oct. 07, 2016
Oki Data Corporation, Tokyo, JP;
Koji Ida, Tokyo, JP;
Yoshitaka Miyazaki, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
An image forming apparatus includes an image forming unit that forms a developer image, a transfer portion that transfers the developer image to a transfer object, an endless transfer belt that rotates passing between the image forming unit and the transfer portion, a driving roller that drives the transfer belt to rotate, a plurality of marks provided on the transfer belt and arranged in a rotating direction of the transfer belt, a measurement unit that measures a rotation period of the transfer belt using the plurality of marks, and a controller that adjusts a timing at which the image forming unit forms the developer image, based on a measurement result of the rotation period measured by the measurement unit. A circumferential length L of the transfer belt in the rotating direction has a length based on a natural number multiple of a circumferential length m of the driving roller.