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:
Sep. 26, 2019
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 (2006.01); G03G 9/083 (2006.01); G03G 9/087 (2006.01);
U.S. Cl.
CPC ...
G03G 9/0835 (2013.01); G03G 9/0821 (2013.01); G03G 9/0832 (2013.01); G03G 9/0833 (2013.01); G03G 9/0836 (2013.01); G03G 9/0837 (2013.01); G03G 9/0838 (2013.01); G03G 9/08755 (2013.01);
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).′(40)≥6.0×10  (1)′(85)≤5.5×10  (2)[′(40)−′(85)]×100/′(40)≥40  (3)