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:
Dec. 05, 2017
Filed:
Dec. 02, 2016
Applicant:
Lexmark International, Inc., Lexington, KY (US);
Inventors:
Kasturi Rangan Srinivasan, Longmont, CO (US);
Michael Anthony Blassingame, Milliken, CO (US);
Assignee:
LEXMARK INTERNATIONAL, INC., Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/00 (2006.01); G03G 9/113 (2006.01); G03G 9/107 (2006.01); G03G 9/09 (2006.01); G03G 9/08 (2006.01);
U.S. Cl.
CPC ...
G03G 9/1138 (2013.01); G03G 9/0804 (2013.01); G03G 9/0808 (2013.01); G03G 9/0815 (2013.01); G03G 9/0817 (2013.01); G03G 9/0819 (2013.01); G03G 9/0827 (2013.01); G03G 9/0918 (2013.01); G03G 9/1075 (2013.01); G03G 9/1131 (2013.01); G03G 9/1132 (2013.01); G03G 9/1133 (2013.01); G03G 9/1135 (2013.01); G03G 9/1136 (2013.01); G03G 9/1139 (2013.01);
Abstract
A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles, wherein the magnetic carrier particle is surface treated with a hydrophobized titania particle. The surface treatment with a hydrophobized titania particle may be selected from either a spherical, disk, or spindle shaped. Tribocharge of the toner and the toner charge stability across cartridge life or environments may be suitably modified by selecting a preferred size and shape of the hydrophobized titania.