×

Charging member, process cartridge and image forming apparatus

  • US 5,384,626 A
  • Filed: 09/07/1993
  • Issued: 01/24/1995
  • Est. Priority Date: 09/07/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. A charging member for charging a member to be charged while being in contact therewith, comprising:

  • a conductive base for being supplied with a voltage;

    a surface layer contactable to the member to be charged;

    a sponge layer between said conductive base and said surface layer;

    a 100% modulus M100 (kg/cm2) of said surface layer and a thickness d (cm) of the surface layer satisfied;

    
    
    space="preserve" listing-type="equation">M.sub.100 ×

    d≦

    1.5(kg/cm).

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×