FLEXIBLE CLEANER SEAL
Original Publication Date: 1983-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
In an electrographic reproducing apparatus using dry development with finely divided marking particles caIled toner and following transfer of the toner image to the copy substrate, the photoreceptor imaging surface 20 is cleaned of residual toner in preparation for the next imaging cycle. During the cleaning process, typically a doctor blade 18 scraps the imaging surface and in a separate cleaning assembly the spent toner is collected in a spent toner sump. The Figure illustrates the use of a flexible seal 10 in the photoreceptor cleaner housing 12 to prevent the spent toner from billowing up into other machine parts such as bearings, etc. The seal on the back of the doctor blade support assembly 14 is flexible. For example, a layer of Mylar may be placed so as to restrict the toner to a small volume without allowing it to escape to other parts of the machine so that the toner eventually falls down into the sump or as illustrated, to the auger housing 16 where the toner is moved to a remote sump. As mentioned above, a thin flexible plastic material such as Mylar may be used. Alternatively, other materials such as stainless steel, copper alloys, steel and other metals and plastics could also be used as long as they are thin and flexible and provide the necessary sealing action. With a lightweight material the sealing force against the frame and the cleaning blade srrpport is very low thereby not effecting the force on the doctor blade during the cleaning operation.