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Color image forming apparatus having interchangeable image forming process cartridges

  • US 5,146,270 A
  • Filed: 04/16/1991
  • Issued: 09/08/1992
  • Est. Priority Date: 12/27/1988
  • Status: Expired due to Fees
First Claim
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1. A color image forming apparatus comprising:

  • a plurality of developing devices, a cleaning device and a transfer member, all of which are provided around an image retainer;

    at least the image retainer, the cleaning device and the transfer member being arranged unitarily in a process cartridge, and the process cartridge being formed so that it can be inserted into and withdrawn from an apparatus body; and

    a means for recovering waste toner, which is scraped off from a surface of the image retainer by the cleaning device, into a hollow in the transfer member.

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