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Service life informing device for charged member, informing method thereof, process cartridge and image forming apparatus

  • US 5,835,818 A
  • Filed: 12/26/1996
  • Issued: 11/10/1998
  • Est. Priority Date: 12/26/1995
  • Status: Expired due to Term
First Claim
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1. A life informing device for a charge body, comprising:

  • a body to be charged;

    a charging member for charging said charge body, wherein said charging member is adapted to receive an oscillating voltage and non-oscillating voltage and to be in contact with said charge body during the charging operation; and

    informing means for informing a user whether said charge body reaches the life time thereof, based on an accumulated time t1 of the application time during which said oscillating voltage is applied, and an accumulated time t2 of the application time of said non-oscillating voltage.

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