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. 21, 1999
Filed:
Feb. 03, 1999
Applicant:
Inventors:
Donald Bourne, Broomfield, CO (US);
Bryan Patrick Livengood, Thornton, CO (US);
Tonya Mira McQueen, Boulder, CO (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430110 ; 430111 ;
Abstract
Toner compositions comprise (a) a toner particulate including resin, magnetic component and charge control agent, and (b) an extra-particulate additive comprising a first hydrophobic additive having negative tribocharging properties and a second hydrophobic additive having positive tribocharging properties.