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:
Jun. 23, 2009
Filed:
Feb. 04, 2005
Won-sup Lee, Daejeon, KR;
Chang-soon Lee, Daejeon, KR;
Joo-yong Park, Daejeon, KR;
Hyeung-jin Lee, Daejeon, KR;
Won-Sup Lee, Daejeon, KR;
Chang-Soon Lee, Daejeon, KR;
Joo-Yong Park, Daejeon, KR;
Hyeung-Jin Lee, Daejeon, KR;
LG Chem Ltd., Seoul, KR;
Abstract
The present invention relates to a magnetic mono-component toner composition with positive charge comprising i) a magnetic toner particle containing a charge control agent with positive charge; ii) a hydrophobic silica with negative charge; iii) a fluorinated organic fine powder; and iv) a metal oxide fine powder containing 20 to 80 wt % of tin oxide. The toner has an advantageous in the extended life of the drum, reduction of the background contamination, and improvement of long-term reliability, and thus can be used effectively for image forming apparatus.