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HEATING IMAGING MEMBER WITH MAGNETIC OR ELECTRICAL INDUCTANCE

IP.com Disclosure Number: IPCOM000131766D
Publication Date: 2005-Nov-17
Document File: 1 page(s) / 21K

Publishing Venue

The IP.com Prior Art Database

Abstract

As a cost reduction measure for certain color printers, it is proposed that the environmental control system (ECS) be removed. One way to gain back some of that control, is by heating the imaging member. If inductive heating were used to only heat the imaging member, many of these issues could be eliminated.

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HEATING IMAGING MEMBER WITH MAGNETIC OR ELECTRICAL INDUCTANCE

As a cost reduction measure for certain color printers, it is proposed that the environmental control system (ECS) be removed.  However, in a printer employing an electrographic process, by removing the ECS, control of the environment around an imaging member on a metal (nickel) substrate is lost.  One way to gain back some of that control, is by heating the imaging member.  Since the imaging member, in certain printers, is mounted on a large metallic mandrel, one would have to provide a lot of energy to heat this mandrel, if it were to be heated from the inside to the outside.  Not only would it take a lot of energy, it would take a lot of time to vary the temperature if it were desired to tie the imaging member temperature with external relative humidity (RH).  Heating the mandrel would also include moving electrical contacts since the mandrel is rotating during the process.  If inductive heating were used to only heat the imaging member, many of these issues could be eliminated.

It is therefore proposed to provide a heating system for the imaging member, which would be based on inductive coupling of the imaging member nickel substrate.  One such arrangement would include a bar located near the imaging member surface running cross-track to the imaging member rotation.  In this bar could be rotating permanent magnets or an array of electromagnets.  The alternating magnetic field from these magnets would...