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:
Mar. 18, 2003
Filed:
Sep. 28, 2001
Bryan Michael Blair, Lexington, KY (US);
Michael Thomas Moore, Longmont, CO (US);
Michelle Kathryn Morris, Lexington, KY (US);
John Melvin Olson, Boulder, CO (US);
Jodi Lynne Walsh, Berthod, CO (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A dry, powder electrostatic toner having polyester resin as a binder, pigment as a colorant, charge control ingredients polyethylene wax as a release agent, and extra particulate elements to improve flow and to scrub the doctor blade, one extra particular element is hydrophilic rutile acicular titanium oxide with aluminum oxide surface treatment, two silicas are blended within the bulk of the toner, one of BET surface area of about 30 m /g and one of BET surface area of about 380 m /gn; and an organoboron complex negative exchange control agent is blended with a quaternary ammonium salt of an aluminosilicate compound negative charge control agent. Improved functioning as a toner is realized.