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 Toner cleaning apparatus

Details
Inventors: Howard, Alan C. R.; Thompson, Philip R.; Watts, Geoffrey;
Assignee: Xerox Corporation (Stamford, CT)
Primary Examiner: Moses; R. L.
Assistant Examiner:
Attorney, Agent or Firm:

Apparatus for separating residual toner material from the surface of a reusable photoreceptor in a reproducing machine has a cleaner blade assembly comprising a cleaner blade in a holder. The cleaner blade assembly is movable between two positions. In a first position the blade operatively engages the photoreceptor to clean off the residual toner material which is then collected in a generally enclosed chamber below. In the second position the blade assembly is spaced apart from the photoreceptor but covers the entrance to the chamber forming a sealed enclosure for the contents. Thus the toner collecting chamber is sealed by the cleaner blade alone without relying on the photoreceptor to perform a sealing function which makes the apparatus particularly suitable for use in a process cassette comprising at least a photoreceptor and, optionally, other process elements wherein the photoreceptor cannot seal the chamber because it is only loosely retained when the cassette is not in the working position in the machine.

DETAILED DESCRIPTION We claim: 1.
Apparatus for separating residual toner material from the surface of a re-usable image retaining member of a reproducing machine, comprising: blade means for chiseling removal of toner from an image retaining member arranged for movement between two positions wherein at the first position the blade means operatively engages the image retaining member to remove said residual toner material therefrom and at the second position the blade means is spaced apart from the imaging retaining member; a generally enclosed chamber with an opening for collecting the residual toner material as it is removed by said blade means; and said second position of the blade means completely covering the opening and closing the chamber to form a sealed enclosure preventing the toner material contained therein from escaping.
2.
The apparatus as defined in claim 1, further comprising spring means which bias the blade means into sealing relationship with the chamber.
3.
The apparatus as defined in claim 1, wherein around the opening in the chamber there are provided sealing members arranged to abut the blade means when the blade means is in said second, sealing position.
4.
A process unit adapted to be removably mounted in a main assembly of a reproducing machine, the process unit including an image retaining member loosely retained in the process unit when the process unit is removed from the main assembly and adapted to be supported in an operative position in said main assembly by an process support forming part of the main assembly, said process unit comprising: blade means for chiseling removal of toner from an image retaining member arranged for movement between two positions, wherein at the first position the blade means operatively engages the image retaining member to remove said residual toner material therefrom and at the second position the blade means is spaced apart from the imaging retaining member; a generally enclosed chamber with an opening for collecting the residual toner material as it is removed by said blade means; and said second position of the blade means completely covering the opening and closing the chamber to form a sealed enclosure preventing the toner material contained therein from escaping


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