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. 12, 2024
Filed:
Jul. 07, 2023
Kyocera Document Solutions Inc., Osaka, JP;
Seiji Kikushima, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
A developing device includes a developing device case, a developer carrier, a regulating blade, a magnet member, and a blade magnet. The regulating blade forms a regulating part. Toner contains toner mother particles containing binder resin and magnetic powder, and silica particles and alumina particles adhered to surfaces of the toner mother particles. The alumina particles has a primary particle size of 150 nm or more and 400 nm or less, and resistivity of 0.1 Ωm or more and 2 Ωm or less. The developing device can execute a developer removal mode in which the developer carrier is rotated in a reverse direction opposite to a forward direction that is a rotation direction at image forming time, in a range of 1/18 or more and ⅕ or less of an outer circumference length of the developer carrier, so as to remove the developer staying at the regulating part.