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:
Jun. 26, 2018
Filed:
Sep. 11, 2013
Konica Minolta, Inc., Chiyoda-ku, Tokyo, JP;
Yukiko Uno, Kyoto, JP;
Satoshi Matsumoto, Kyoto, JP;
Naoki Yoshie, Ibaraki, JP;
Miyuki Hotta, Kobe, JP;
KONICA MINOLTA, INC., Chiyoda-Ku, Tokyo, JP;
Abstract
A liquid developer in which toner particles are dispersed in an insulating liquid, the toner particles having such a core-shell structure that shell particles containing a shell resin are attached to or cover surfaces of core particles containing a core resin, the core resin having an acid group and an acid dissociation constant not smaller than 2.90 and not greater than 8.00, and a method for manufacturing the same are provided. The toner particles can have a volume average particle size not smaller than 0.01 μm and not greater than 100 μm and a coefficient of variation of volume distribution not lower than 1% and not higher than 100%. This liquid developer has excellent fixability which allows adaptation to various recording materials, can be fixed in a wide temperature range, and is extremely low in deterioration in fixability during storage.