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. 09, 2016
Filed:
Dec. 31, 2013
Lexmark International, Inc., Lexington, KY (US);
David Glenn Black, Broomfield, CO (US);
LEXMARK INTERNATIONAL, INC., Lexington, KY (US);
Abstract
An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below: where Rand Rcontain a spacer group and a radical polymerizable functional group, Rand Rare selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and Rand Rcontain a spacer group and a radical polymerizable functional group. The curable composition also contains at least one curing agent. The curing agent comprises a urethane resin containing six radical polymerizable functional groups. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its service life.