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:
Nov. 08, 2011
Filed:
Dec. 14, 2007
Woo-cheul Jung, Ulsan, KR;
Ji-hoon Lee, Daejeon, KR;
Hui-je Lee, Incheon, KR;
Yu-na Kim, Daejeon, KR;
Jung-woo Kim, Daejeon, KR;
Chang Soon Lee, Daejeon, KR;
Woo-Cheul Jung, Ulsan, KR;
Ji-Hoon Lee, Daejeon, KR;
Hui-Je Lee, Incheon, KR;
Yu-Na Kim, Daejeon, KR;
Jung-Woo Kim, Daejeon, KR;
Chang Soon Lee, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
There is provided a toner having good charging characteristics that is composed of a core region and a thin shell in which a charge control agent is densely distributed so as to improve charging characteristics of the toner, and a method for manufacturing the same. The method for manufacturing a toner having a bi-layered structure includes: producing a toner core using a suspension polymerization method; preparing a suspension of toner particles having a core-shell structure by forming a rigid shell on a surface of the toner core; and recovering the toner particles from the suspension as a post-processing operation.