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. 20, 1998
Filed:
Dec. 20, 1996
Vytas A Kavolius, Charlottesville, VA (US);
Joseph E White, Mt. Crawford, VA (US);
Bradford G Buttner, Charlotesville, VA (US);
Genicom Corporation, Chantilly, VA (US);
Abstract
Used, spent or physically degraded primary charge rollers (PCR's) may be rejuvenated to an extent that is operationally comparable to (or exceeds) the print quality and service life of an OEM-supplied PCR. The used PCR is treated so as to apply an overcoating of a dispersion which includes an electrically conductive particulate material, such as graphite or carbon black, and a polymeric binder (e.g., polyurethane latex). The electrically conductive material imparts the necessary electrical properties to the PCR for purposes of 'rejuvenation', while the presence of the polymeric binder serves to impart long-term service life to the PCR and also permits the use of less electrically conductive material.