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:
Sep. 25, 2001
Filed:
Jan. 24, 2000
Applicant:
Inventors:
David Daniel Putnam, Fairport, NY (US);
Dana G. Marsh, Newark, NY (US);
Robert E. Contois, Rochester, NY (US);
Assignee:
Nexpress Solutions LLC, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/097 ;
U.S. Cl.
CPC ...
G03G 9/097 ;
Abstract
A monocomponent electrostatographic developer is disclosed. The developer contains a negatively charging toner wherein the toner particle surface contains a positively chargeable inorganic fine powder having a mean volume average diameter of 0.5 to 7.0 &mgr;m, a cleaning ratio of 0.1 to 5.0, and a flowability improving agent having a BET specific surface area of at least 30 m,/g. A method of electrostatic imaging using the developer is also disclosed.