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:
Dec. 13, 2016
Filed:
Oct. 06, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Mitsuhiro Furukawa, Kawaguchi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A developing apparatus includes a developer bearing member, a first conveying member disposed in a supplying chamber, a second conveying member disposed in a collecting chamber, and a third conveying member disposed in the collecting chamber to convey the developer in a conveying direction opposite to the conveying direction of the second conveying member. The third conveying member has a conveying performance which is lower than that of the second conveying member, and has a first screw portion including a spiral blade portion and a second screw portion including a spiral blade portion at a downstream side in the conveying direction The spiral blade portion of the first screw portion and the spiral blade portion of the second screw portion are formed to have a same spiral direction, and a conveying performance of the second screw portion is lower than a conveying performance of the first screw portion.