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:
Nov. 19, 2019
Filed:
Mar. 20, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Yukihiro Soeta, Sagamihara, JP;
Masafumi Takahashi, Tsukubamirai, JP;
Ryohei Terada, Matsudo, JP;
Yushi Sadamitsu, Kashiwa, JP;
Yasuhiro Shimoi, Toride, JP;
Yutaka Koga, Kashiwa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A developing device includes a rotatable developing member configured to carry a developer containing toner and a carrier to a developing position, a first frame configured to accommodate the developer, a second frame mounted on the first frame and configured to cover part of an outer peripheral surface of the rotatable developing member, and a cover portion provided opposite to the rotatable developing member. The following relationship is satisfied: LLL, and LL, where with respect to the radial direction of the rotatable developing member, Lis a minimum of the clearance formed between the second frame and the rotatable developing member, Lis a minimum of the clearance formed between the rotatable developing member and the cover portion, and Lis a minimum of the clearance formed between the second frame and the cover portion.