Browse Prior Art Database

A DEVELOPER ROLL DRIVE Disclosure Number: IPCOM000023632D
Original Publication Date: 1978-Aug-31
Included in the Prior Art Database: 2004-Mar-31

Publishing Venue

Xerox Disclosure Journal


Alternative embodiments of a donor roller employed in a magnetic brush development system are depicted in Figures 1 and 2. As shown in Figure 1, donor roller 62 includes a non-magnetic stationary tubular member 68. End caps 70 and 72 seal tubular member 68. A shaft 74 is mounted within tubular member 68 and serves as a rotatable mounting for magnetic member 76. Roller bearings 78 and 80 drive shaft 74, Thus, magnetic member 76 rotates relative to stationary tubular member 68 at a substantially constant angular velocity. The rotating magnetic member advances the developer material on the surface of tubular member 68 into the development zone.