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:
Feb. 10, 2004
Filed:
Mar. 21, 2002
Patrick S. Dougherty, Boise, ID (US);
Quintin T. Phillips, Boise, ID (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
The present invention includes a toner cartridge having a developer roller having a cylindrical exterior surface with a tapering ramped channel formed in the surface of at least one end of the developer roller. The tapering ramped channel having a narrow proximal end nearest the at least one end of the developer roller and a wide distal end furthest from the at least one end of the developer roller. The narrow proximal end of the tapering ramped channel extends deeper into the surface of the developer roller than the wide distal end. The tapering ramped channel functions to propel toner particles or other fluid accumulating against an end seal away from the seal, toward a central portion of the developer roller.