Lexmark International, Inc.

Jeanne Marie Saldanha-Singh

Ashok Murthy

Ajay Kanubhai Suthar

Stephen Todd Olson

Richard B Watkins

Rita Sharma

Rolfe Frank Kruckas

Jan Rose Heeg

Peter E Wallin

Alexander D Meade

Pramod K Sharma

David Daniel Dreyfuss

Todd Lucas Janes

Joe William Woods

Kuangti T Cheng

Joe Williams Woods

A paper or transparency receiving toner to be fixed by heat has an ionomeric resin on its outer surface. For universal application, the outer layer is a blend of non-ionomeric resin, such as styrene acrylate copolymer, and an ionomer, which permits the material of the toner to molecularly intermingle with the blend during heat fixing. Irradiation raises the melting point of the ionomeric resin to prevent delamination. The resulting printing is strongly bonded to the substrate and is of excellent quality.

Heat fixing paper or sheet

Cleaning roller (7) contacts intermediate transfer roller (4), each rotating at the same surface speed to avoid rubbing. The cleaning roller has an electric potential sufficient to remove toner from the transfer roller to clean it. Silicone oil is applied by a roller 29, which is wetted by oil from a oil impregnated wiper (31). The oil facilitates cleaning and reduces wear of the intermediate transfer roller, which is typically soft to facilitate transfer.

Toned member cleaning by electrified roller

An electrophotographic printer employs a intermediate transfer roller of a copolymer of urethane and silicone carbinol. Transfer efficiency is excellent over a period normally coinciding with the full life of a printer or other imaging device.

Polymeric toner transfer member material

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Lexington, KY, United States of America

Jeanne Marie Saldanha-Singh