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. 12, 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 15/08 (2006.01); G03G 9/08 (2006.01); G03G 9/107 (2006.01); G03G 9/113 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0889 (2013.01); G03G 9/0804 (2013.01); G03G 9/0808 (2013.01); G03G 9/0815 (2013.01); G03G 9/0817 (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);
Abstract
A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the polymer coated magnetic carrier particles with hydrophobized titania surface additives before the polymer coated magnetic carrier particles are mixed with the toner particles. The surface treatment with the hydrophobized titania surface additives can be either a spherical, disk, or spindle shaped.