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Cleaning blade for use in image-forming apparatus

  • US 7,496,325 B2
  • Filed: 12/12/2006
  • Issued: 02/24/2009
  • Est. Priority Date: 12/21/2005
  • Status: Expired due to Fees
First Claim
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1. A cleaning blade, for cleaning toner on a surface of a photoreceptor of an image-forming apparatus, which is formed by molding into a thin plate a thermosetting elastomer composition containing:

  • a rubber component (1) consisting of a moderate high-nitrile acrylonitrile-butadiene rubber having a bound acrylonitrile amount of 31% to 36%, a hydrogenated acrylonitrile-butadiene rubber having a residual double bond content of not more than 10%, or a mixture of said rubbers, 0.1 parts by mass to 80 parts by mass of a filler (2) per 100 parts by mass of said rubber component (1), and 0.1 parts by mass to 30 parts by mass of a crosslinking agent (3) per 100 parts by mass of said rubber component (1),wherein said filler is either a combination of methacrylic acid, carbon black and magnesium oxide or a combination of zinc oxide, carbon black and stearic acid;

    wherein an initial contact angle of said cleaning blade to said photoreceptor is set to 10°

    to 50°

    ; and

    wherein a line pressure of said cleaning blade to be applied to said photoreceptor is set to 0.1 N/cm to 1.5 N/cm.

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