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. 05, 2023
Filed:
Feb. 01, 2021
Applicant:
Sharp Kabushiki Kaisha, Sakai, JP;
Inventor:
Tadanori Kano, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/097 (2006.01); G03G 9/08 (2006.01);
U.S. Cl.
CPC ...
G03G 9/09725 (2013.01); G03G 9/0808 (2013.01); G03G 9/0812 (2013.01); G03G 9/0819 (2013.01);
Abstract
Provided is a toner characterized by including at least a negatively-charged toner master particle, and an external additive externally added onto the surface of the toner master particle, wherein the external additive includes a fine powder and a small particle size silica having an average first particle diameter smaller than that of the fine powder, and wherein the fine powder is a composition containing at least aluminum hydroxide and silica and has a surface treated with silane.