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:
Feb. 21, 2023
Filed:
Aug. 18, 2021
Fujifilm Business Innovation Corp., Tokyo, JP;
Daisuke Noguchi, Kanagawa, JP;
Atsushi Sugawara, Kanagawa, JP;
Kazuhiko Nakamura, Kanagawa, JP;
Hiroshi Nakazawa, Kanagawa, JP;
FUJIFILM BUSINESS INNOVATION CORP., Tokyo, JP;
Abstract
A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin, a release agent, and a coloring agent, and a cross-sectional image of the toner particles meets requirements (1) and (2): requirement (1), an average of ten or more domains, per toner particle, of the release agent have an area of 0.5% or more and 5.0% or less of the area of the toner particle; requirement (2), in a Voronoi tessellation generated from the centroids of the domains of the coloring agent, the mean area of the Voronoi cells is 0.020 μmor more and 0.060 μmor less, and the standard deviation of the areas of the Voronoi cells is 0.010 μmor less.