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Process cartridge and electrophotographic apparatus

  • US 20030118369A1
  • Filed: 08/30/2002
  • Published: 06/26/2003
  • Est. Priority Date: 08/31/2001
  • Status: Active Grant
First Claim
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1. A process cartridge which is detachably mountable to a main body of an electrophotographic apparatus, integrally comprising:

  • an electrophotographic photosensitive member to carry a toner image;

    an intermediate transfer belt having a contact part with the electrophotographic photosensitive member, and primary transfer means to primarily transfer the toner image at the contact part from the electrophotographic photosensitive member to the intermediate transfer belt, wherein after the contact part is formed by the electrophotographic photosensitive member and the intermediate transfer belt being brought into contact with each other under a linear pressure of 0.5 N/cm and left to stand for 10 hours in an environment of 45°

    C./95% RH, differences in the dark portion potential and the light portion potential of the electrophotographic photosensitive member between the contact part and the portion being not the contact part of the electrophotographic photosensitive member are respectively less than 20%, and no crack having a length of not less than 1 μ

    m occurs in any of the surface of the electrophotographic photosensitive member and the surface of the intermediate transfer belt.

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