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. 20, 2016
Filed:
Dec. 23, 2014
Lexmark International, Inc., Lexington, KY (US);
Kasturi Rangan Srinivasan, Longmont, CO (US);
Ligia Aura Bejat, Lexington, KY (US);
Michael Anthony Blassingame, Milliken, CO (US);
Rick Owen Jones, Berthoud, CO (US);
Brandon Michael Lin, Houston, TX (US);
James Craig Minor, Niwot, CO (US);
LEXMARK INTERNATIONAL, INC., Lexington, KY (US);
Abstract
A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system typically is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the magnetic carrier particles with surface additives before the magnetic carrier particles are mixed with the toner particles. Surface additives include but are not limited to silica, titania and alumina.