US 7,267,915 : Photoconductive element having an amorphous polymeric barrier layer


Inventors:
Molaire, Michel F. (Rochester, NY, US)
Ferrar, Wayne T. (Fairport, NY, US)
Molaire, Tulienne R. (Rochester, NY, US) 
Assignee:
Eastman Kodak Company (Rochester, NY, US) 

This invention relates to electrophotography and to amorphous condensation polymers comprising a polyester-co-imide, polyester-co-imide, polyesterionomer-co-imide, or polyamide-co-imide as a polymeric electrical charge barrier layer.

http://www.freepatentsonline.com/7267915.pdf