Process cartridge and electrophotographic image forming apparatus

US10452021B2 · kind B2 · utility

Assignee

• Canon Kabushiki Kaisha · JP

Inventors

• Daisuke Miura · Yokohama, JP
• Shuhei Iwasaki · Yokohama, JP
• Akira Sakakibara · Susono, JP
• Tatsuya Yamaai · Yokohama, JP
• Kazunori Noguchi · Soma, JP
• Harunobu Ogaki · Soma, JP
• Kazunari Hagiwara · Yokohama, JP
• Yuji Kawaguchi · Inagi, JP

Key dates

• Filing date: Nov 21, 2018
• Grant date: Oct 22, 2019
• Expiry date: Nov 21, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G15/75
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A process cartridge configured to be detachably attachable to a main body of an electrophotographic image forming apparatus, in which an occurrence of an image failure is suppressed, wherein the process cartridge includes an electrophotographic photosensitive member and a cleaning member arranged in contact with the electrophotographic photosensitive member, wherein an elastic deformation modulus of a surface layer of the electrophotographic photosensitive member is 35% or larger, and the cleaning member is formed of a urethane foam, wherein a density of the urethane foam is 200 to 500 kg/cm3, and a 25% compressive load of the urethane foam is 0.3 MPa or smaller.