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CERAMIC COATED DONOR ROLLS WITH ELECTROFORMED NICKEL SUBSTRATES

IP.com Disclosure Number: IPCOM000026958D
Original Publication Date: 1994-Aug-31
Included in the Prior Art Database: 2004-Apr-07

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a method for making ceramic coated donor rolls with electroformed nickel substrates and their use in developing latent images in hybrid scavengeless development systems used in electrophotographic printing and copying machines. The method of making comprises preparing a hollow tube by electroforming nickel onto a suitable mandrel to a thickness of about 0.0001 to 0.01 inch; removing the mandrel support for reuse by positive displacement with, for example, a liquid or gel which converts to a rigid foam core that thereafter supports the nickel layer; and plasma spraying a ceramic coating onto the nickel layer to a thickness of about 0.001 to about 0.125 inches. The resulting ceramic coated roll provides high reliability and copy quality in electrophotographic development processes and can be manufactured at considerable cost savings over conventional methodologies.