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:
Jan. 27, 2026
Filed:
Apr. 29, 2022
Fujifilm Business Innovation Corp., Tokyo, JP;
FUJIFILM Business Innovation Corp., Tokyo, JP;
Abstract
An electrostatic charge image developing toner contains toner particles that contain a binder resin, in which each of a loss modulus G″5 (150) of the electrostatic charge image developing toner determined by measuring dynamic viscoelasticity of the electrostatic charge image developing toner at a temperature of 150° C. and a strain of 5% and a loss modulus G″50 (180) of the electrostatic charge image developing toner determined by measuring dynamic viscoelasticity of the electrostatic charge image developing toner at a temperature of 180° C. and a strain of 50% is 1×10Pa or more and 1×10Pa or less, and a relationship between a loss modulus G″5 (t1) of the electrostatic charge image developing toner at a first temperature t1 in a temperature range of 150° C. or higher and 180° C. or lower and a strain of 5% and a loss modulus G″50 (t2) of the electrostatic charge image developing toner at a second temperature t2 higher than the first temperature t1 in the temperature range of 150° C. or higher and 180° C. or lower and a strain of 50% satisfies the following Formula (1) in a case of a temperature difference (t2−t1) between the first temperature t1 and the second temperature t2 is 15° C. or higher.1<″5(1)/″50(2)<3.0 Formula (1)