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:
Sep. 01, 2020
Filed:
Nov. 12, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Takayoshi Kihara, Suntou-gun, JP;
Shuhei Kawasaki, Susono, JP;
Yoshihiro Mitsui, Numazu, JP;
Yasukazu Ikami, Tokyo, JP;
Shunsuke Matsushita, Yokohama, JP;
Takuya Oka, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A developer on a developer bearing member includes a toner having a toner particle including a binder resin and an inorganic particle present on the surface of the toner particle. A fixing ratio of the inorganic particle to the surface of the toner particle is 80% or more. The aspect ratio of the toner is 0.90 or more. Where a contact pressure of a regulating member, which regulates the developer on the developer bearing member, against the developer bearing member is denoted by N (gf/mm) and a contact pressure of the supplying member, which is in contact with the developer bearing member and supplies the developer to developer bearing member, against the developer bearing member is denoted by D (gf/mm), the following expressions are satisfied: D+2×N−6≥0, 1.5≤N≤4.0, and 2.0≤D≤3.5.