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:
Oct. 01, 2002
Filed:
Jul. 18, 2001
John Andrew Buchanan, Lexington, KY (US);
Chris Anthony Burdette, Lexington, KY (US);
Philip Scot Carter, Lexington, KY (US);
John William Kietzman, Lexington, KY (US);
Benjamin Keith Newman, Lexington, KY (US);
Matthew Lee Rogers, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A toner cartridge for use in a laser printer has a toner reservoir or hopper in which a first paddle rotates about a fixed first axis to sweep most of the toner volume of the cartridge to agitate and push the toner out of the toner reservoir or hopper through an exit port. A second paddle is pivotally mounted on the first paddle to sweep a volume of the toner reservoir or hopper in which a portion of the longitudinal wall of the toner reservoir or hopper of the toner cartridge is non-circular so as to produce a reduced cross section in the toner reservoir or hopper. The second paddle also initially engages the curved portion of the inner surface of the longitudinal wall of the toner reservoir or hopper and preferably has a tear drop cross section.