MAGNETIC BEARING SEAL
Original Publication Date: 1980-Feb-29
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
An electrophotographic printing machine frequently employs a magnetic brush development system. The magnetic brush development system utilizes a developer roll comprising a tubular member 10 mounted on bearings 14 secured to shaft 12. Frequently, the developer mixture of magnetic carrier granules and toner particles contaminate bearings 14 resulting in a significant deterioration in the life of bearings 14. In order to prevent the carrier granules and toner particles from contaminating bearing 14, a rubber magnetic diaphragm 16 is inserted in opposed ends of tubular member 10 and attracts the magnetic carrier granules thereto. The magnetic carrier granules cooperate with diaphragm 16 to act as a seal preventing contamination of bearings 14 so as to extend the life thereof.