METHOD FOR MAXIMIZING CLEANABILITY OF BIAS TRANSFER ROLLS
Original Publication Date: 1994-Feb-28
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
Bias transfer rolls (BTR) formed using a conductive elastomer have the property of being very difficult to clean with a brush, a blade or an air stream cleaning system. Attempts have been made to find a conductive elastomer for bias transfer rolls that is not only highly conductive but also wear resistant and readily cleanable. Current findings, however, have only provided an elastomer material that is highly conductive but not readily cleanable. One costly technique that overcomes this impasse first forms the bulk of a bias transfer roll using a highly conductive elastomer that is not very cleanable and subsequently applies an overcoat to the roll with a less conductive material that is readily cleanable. Besides cost, a further limitation of the process of applying an overcoat is that grinding of the surface of the bias transfer roll is necessitated in order to achieve the desired tolerance of the overall roll diameter. Additionally, bias transfer rolls developed using the overcoat process may experience variable inboardloutboard conductivity profiles due to the grinding process.