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:
Apr. 16, 2019
Filed:
Aug. 12, 2016
Kao Corporation, Tokyo, JP;
Tatsuya Yamada, Wakayama, JP;
Nobumichi Kamiyoshi, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
A liquid developer containing toner particles containing a resin containing a polyester and a pigment, wherein the toner particles are dispersed in an insulating liquid in the presence of a dispersant, wherein the insulating liquid has a boiling point of 300° C. or lower, and wherein the insulating liquid has a peak intensity ratio of a methyl group calculated by the formula (1): wherein A is a peak intensity ascribed to CHstretching vibration when measured with a Fourier transform infrared spectrometer, B is a total peak intensity ascribed to CHstretching vibration and CH stretching vibration,of 25% or more, or wherein the insulating liquid contains a polyisobutene.