US 6,377,772 : Double-sleeved electrostatographic roller and method of using

Inventors:

Chowdry, Arun (Rochester, NY)
Cody, Craig M. (Scottsville, NY)
Cormier, Steven (Rochester, NY)
Grabb, Dennis (Rochester, NY)
Herrick, Diane M. (Rochester, NY)
May, John W. (Rochester, NY)
Miskinis, Edward T. (Rochester, NY)
Molaire, Michel F. (Rochester, NY)
Tan, Biao (Rochester, NY)
Tombs, Thomas (Brockport, NY)
Pavlisko, Joseph A. (Pittsford, NY) 

Assignee:

NexPress Solutions LLC (Rochester, NY) 

In accordance with the invention, there is provided a reproduction method including forming a toner image on a moving primary image-forming member (PIFM) which is a first double-sleeved roller including a rigid cylindrical core member, a replaceable removable compliant inner sleeve member (ISM) in nonadhesive intimate contact with and surrounding the core member, and a replaceable removable photoconductive outer sleeve member (OSM) in nonadhesive intimate contact with and surrounding the ISM; electrostatically transferring the toner image, from the PIFM to a counter-rotating intermediate transfer member (ITM) which is a second double-sleeved roller, in a first transfer nip width produced by a pressure contact between the PIFM and the ITM, an electric field urging the toner image from the PIFM to the ITM, wherein the ITM includes a rigid cylindrical core member, a compliant ISM in nonadhesive intimate contact with and surrounding the core member, and a compliant resistive OSM in nonadhesive intimate contact with and surrounding the ISM.
http://www.freepatentsonline.com/6377772.pdf