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:
Jun. 19, 2001
Filed:
Feb. 17, 2000
Tom E Stickler, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A toner cartridge for an electrostatic printer or copier includes an electrophotographic drum, a toner container, a fixed electrode for receiving a developing bias voltage, and a developer roller for supplying the toner to an electrostatic latent image on the electrophotographic drum. A drive hub is press fit into an end of the developer roller. The drive hub has a unitary nonconducting plastic body, with a plug portion for elastically and slidably press-contacting the end of the developer roller, an elongated axle portion with an uninterrupted bearing surface, a shoulder portion for supporting a spring, and a longitudinal passage running through the axle and shoulder portions. A wire is disposed in the passage and makes an electrical connection with the spring and the developer roller.