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:
Dec. 29, 2020
Filed:
Jul. 30, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Tsutomu Shimano, Mishima, JP;
Reo Tagawa, Tokyo, JP;
Taku Shimoda, Machida, JP;
Yoshihiro Nakagawa, Numazu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Toner, including: a toner particle that contains a binder resin and a wax, wherein the binder resin includes an amorphous resin A, and, in dynamic viscoelasticity measurement of the toner, when the temperature at which the loss elastic modulus G″ measured at a frequency of 1 Hz becomes 1.00×10Pa is set as T(1 Hz), when the temperature at which the loss elastic modulus G″ measured at a frequency of 20 Hz becomes 1.00×10Pa is set as T(20 Hz), and when the maximum value of the ratio (tan δ) of the loss elastic modulus G″ with respect to the storage elastic modulus G', measured at a frequency of 20 Hz, in a range of from 60° C. to 90° C. is set as tan δ(P), the toner satisfies T(20 Hz)−T(1 Hz)≤7.0° C., 0.80≤tan δ(P)≤1.90, 60° C.≤T(1 Hz)≤80° C., and 60° C.≤T(20 Hz)≤80° C.