Invention Grant
US07995950B2 Image forming apparatus, image forming method and process cartridge involving the use of a cleaning blade that removes toner remaining on a surface of an image bearing member 有权
图像形成装置,图像形成方法和处理盒,其涉及使用去除在图像承载部件的表面上残留的调色剂的清洁刮板

  • Patent Title: Image forming apparatus, image forming method and process cartridge involving the use of a cleaning blade that removes toner remaining on a surface of an image bearing member
  • Patent Title (中): 图像形成装置,图像形成方法和处理盒,其涉及使用去除在图像承载部件的表面上残留的调色剂的清洁刮板
  • Application No.: US12817710
    Application Date: 2010-06-17
  • Publication No.: US07995950B2
    Publication Date: 2011-08-09
  • Inventor: Hideo Nakamori
  • Applicant: Hideo Nakamori
  • Applicant Address: JP Tokyo
  • Assignee: Ricoh Co., Ltd.
  • Current Assignee: Ricoh Co., Ltd.
  • Current Assignee Address: JP Tokyo
  • Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
  • Priority: JP2005-207355 20050715
  • Main IPC: G03G15/00
  • IPC: G03G15/00
Image forming apparatus, image forming method and process cartridge involving the use of a cleaning blade that removes toner remaining on a surface of an image bearing member
Abstract:
An image forming apparatus including an image bearing member having a static friction coefficient of from 0.1 to 0.3, a latent electrostatic image forming device, a developing device, and a cleaning device including a cleaning blade to remove remaining toner, in which the contact pressure of the cleaning blade to the image bearing member ranges from 1.5 to 10 g/cm, and the image bearing member and the cleaning blade satisfy the following relationships (1) and (2): 0.01 (kg)≦(Toff−T0)/r≦0.15 (kg)   Relationship (1) 1.2≦(Ton−T0)/(Toff−T0)≦3.8,   Relationship (2) wherein T0 (kgcm) represents the rotation torque of the image bearing member when the cleaning blade is not in contact therewith, Toff, the rotation torque when the cleaning blade contacts the image bearing member and the toner is not thereon, Ton, the rotation torque when the cleaning blade contacts the image bearing member and the toner is thereon for development, and r represents the radius of the image bearing member.
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