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ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE

  • US 20030223772A1
  • Filed: 07/30/2002
  • Published: 12/04/2003
  • Est. Priority Date: 06/04/2002
  • Status: Active Grant
First Claim
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1. (Currently Amended) An electrophotographic image forming apparatus for forming an image on a recording medium, comprising:

  • a cartridge mounting portion configured and positioned to for detachably mounting mount thereon a process cartridge, said the process cartridge including;

    an electrophotographic photosensitive member;

    process means for acting on said the electrophotographic photosensitive member;

    a shutter having a photosensitive member protecting portion configured and positioned to protect for protecting said the electrophotographic photosensitive member, and movable between a protecting position for protecting said the electrophotographic photosensitive member and a retracted position retracted from said the protecting position to expose said the electrophotographic photosensitive member; and

    a shutter moving portion configured and positioned to move for moving said the shutter from said the protecting position to said the retracted position;

    guide means for guiding said the process cartridge when said the process cartridge is to be mounted on said mounting portion;

    shutter opening means for coming into engagement with said the shutter moving portion to open said the shutter from said the protecting position to said the retracted position when said the process cartridge is guided by said guide means and is moved along a movement path toward said mounting portion;

    a wrong insertion preventing engagement portion configured and positioned to come for coming into engagement with said the shutter moving portion to open said the shutter, on an upstream side of an engagement position in which said the shutter moving portion and said shutter opening means are engaged with each other, in a mounting direction in which said the process cartridge is mounted on said mounting portion when a process cartridge which does not match in function with a main body of said apparatus is inserted into the main body of said apparatus; and

    a main body shutter abutting portion configured and positioned to abut for abutting against said the shutter moved toward said the retracted position by the shutter moving portion being engaged with said wrong insertion preventing engagement portion, to restrict the insertion of said the process cartridge.

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