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. 11, 2019
Filed:
Aug. 17, 2018
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Takashi Suzuki, Nagoya, JP;
Tsunemitsu Fukami, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
An image forming apparatus has a photosensitive member, a charger, a developing device, a transfer device, and a controller. In a printing control, the controller rotates the photosensitive member in a forward direction and applies a first transfer bias. In a reverse rotation control, the controller rotates the photosensitive member in a reverse direction and applies a second transfer bias being zero after finishing the printing control. In a forward rotation control, the controller rotates the photosensitive member in the forward direction and applies a third transfer bias for a period including a time that a part of the photosensitive member reaches the transfer device after finishing the reverse rotation control. The part faces the developing device when the rotating direction of the photosensitive member is switched. The third transfer bias has an opposite polarity to the first transfer bias and an absolute value larger than the second transfer bias.