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:
May. 21, 2013
Filed:
Feb. 26, 2009
Shunquan Zhu, Wuhan, CN;
Yubin Wang, Wuhan, CN;
Shunquan Zhu, Wuhan, CN;
Yubin Wang, Wuhan, CN;
Hubei Dinglong Chemical Co., Ltd., Wuhan, CN;
Abstract
The invention discloses a method for producing a charge control agent and a toner containing the charge control agent. The preparation method includes the technical proposal that in aqueous medium, an azo compound is reacted with a salicylic acid chromium complex, which is used as a complexing agent to synthesize a specific azo chromium complex. The preparation method is characterized by complex synthesis engineering. The toner of the invention includes a charge control agent obtained from the method described herein. Provided is a method for obtaining a charge control agent and a toner with excellent chargeability in that no flying or fogging is observed, even during image formation at high printing speeds. The toner is relatively free from the influences of variations in the environmental temperature and humidity, which ensures stable image printing with high picture quality for long periods of time.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile