Patent · US Active

Magnetic toner

US10877387B2 · kind B2 · utility

3Cited by

73References

9Claims

0Family size

Assignee

Canon Kabushiki Kaisha · JP

Inventors

Kosuke Fukudome · Tokyo, JP
Tetsuya Kinumatsu · Shizuoka, JP
Yusuke Hasegawa · Soma, JP

Key dates

Filing date	Sep 26, 2019
Grant date	Dec 29, 2020
Priority date	—
Expiry date	Sep 26, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG03G9/08797
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A magnetic toner comprising a magnetic toner particle including a binder resin, a magnetic body and a crystalline polyester, wherein a storage elastic modulus E′(40) [Pa] at 40° C. and a storage elastic modulus E′(85) [Pa] at 85° C., which are obtained in a powder dynamic viscoelasticity measurement of the magnetic toner, satisfy the following formulas (1) to (3). E′(40)≥6.0×109 (1)E′(85)≤5.5×109 (2)[E′(40)−E′(85)]×100/E′(40)≥40 (3)

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.