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:
Mar. 21, 2000
Filed:
Jun. 09, 1997
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
A carrier particle which includes a core and a coating layer formed on the surface of the core. The coating layer is made of a coating material including: an organic compound (A) having a functional group other than an Si(OR.sup.1) group, where R.sup.1 is a hydrogen atom, a lower alkyl group or an acyl group; a compound (B) and/or a hydrolytic condensation product thereof, having a functional group having reactivity with the functional group of the organic compound (A), and an Si(OR.sup.1) group; an organometallic compound (C) and/or a hydrolytic condensation product thereof; and a solvent (D). The carrier particles of the present invention, enable toner particles to be sufficiently charged even at high temperature and high humidity, so that an image with no fog can be formed. In addition, the carrier particle has high durability. There is no unnecessary attachment of the toner particles onto the carrier particles, so that the problems of carrier particle contamination and spent toner never arise.