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:
Mar. 26, 2013
Filed:
Jun. 29, 2010
Hisashi Kunihiro, Osaka, JP;
Jun Yamaguchi, Osaka, JP;
Shuichi Akedo, Osaka, JP;
Koichi Mihara, Osaka, JP;
Hisashi Kunihiro, Osaka, JP;
Jun Yamaguchi, Osaka, JP;
Shuichi Akedo, Osaka, JP;
Koichi Mihara, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka-Shi, JP;
Abstract
A developing device is disclosed which includes a developing tank, a developing roller, a carrying member, and a filter. Rotation of the developing roller causes a first airflow directed from the outside of the developing tank through an air path to the inside of the developing tank. Rotation of the carrying member causes a second airflow directed from below in an upward direction inside the developing tank. Collision between the first airflow and the second airflow causes a third airflow directed from the inside of the developing tank through the filter to the outside of the developing tank and further from the outside through the filter back to the inside of the developing tank. This arrangement prevents not only filter clogging but also a toner leak to the outside of the developing device.