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. 28, 2006
Filed:
Dec. 16, 2003
Anthony M. Horgan, Pittsford, NY (US);
Satchidanand Mishra, Webster, NY (US);
Robert C. Yu, Webster, NY (US);
Richard L. Post, Penfield, NY (US);
Edward F. Grabowski, Webster, NY (US);
Kathleen M. Carmichael, Williamson, NY (US);
John R. Lambie, Ontario, NY (US);
Anthony M. Horgan, Pittsford, NY (US);
Satchidanand Mishra, Webster, NY (US);
Robert C. Yu, Webster, NY (US);
Richard L. Post, Penfield, NY (US);
Edward F. Grabowski, Webster, NY (US);
Kathleen M. Carmichael, Williamson, NY (US);
John R. Lambie, Ontario, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
An imaging member having a charge transport layer with multiple regions is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein at least the top or uppermost transport layer comprises a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be of the same or different compounds from that included in the top or additional charge transport layer(s). The charge transport compound present in each layer may be dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.