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:
Apr. 16, 2019
Filed:
Feb. 08, 2017
Samsung Electronics Co., Ltd., Suwon-si, KR;
Hiromichi Jin, Yokohama, JP;
Hiroshi Miyao, Yokohama, JP;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An external additive for a toner includes: a particulate of a polymerization product of at least one silicon compound selected from a silane compound represented by Chemical Formula 1: Si(OR)(wherein Ris a C1 to C6 monovalent hydrocarbon group) and a hydrolysis-condensation product thereof. The particulate has the following properties: a number average particle diameter of about 50 nm to about 250 nm, a first specific surface area (α) measured by a gas adsorption method of about 13 m/g to about 80 m/g, and true density measured by a nominal volume expansion method of about 1.9 g/cmto about 2.1 g/cm.