18511264. PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS simplified abstract (CANON KABUSHIKI KAISHA)

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PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

FUMIYUKI Hiyama of Shizuoka (JP)

YUKA Ishiduka of Shizuoka (JP)

AKIRA Sakakibara of Shizuoka (JP)

TSUTOMU Nishida of Shizuoka (JP)

DAISUKE Miura of Tokyo (JP)

PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18511264 titled 'PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

The patent application describes a process cartridge for an electrophotographic apparatus, which supports a photosensitive member, a developing unit, and a cleaning unit, and can be detachably attached to the main body of the apparatus.

  • The electrophotographic photosensitive member's surface layer is made of a polycarbonate resin with specific structural units.
  • The toner used in the cartridge contains resin particles and an external additive.
  • The external additive in the toner includes particles of a silicon atom-containing compound, with a specific content ratio in the toner.
    • Key Features and Innovation:**
  • Integration of photosensitive member, developing unit, and cleaning unit in a single process cartridge.
  • Use of specific polycarbonate resin for the photosensitive member's surface layer.
  • Toner formulation with silicon atom-containing compound particles as external additive.
    • Potential Applications:**

The technology can be applied in various electrophotographic apparatus for printing and copying purposes.

    • Problems Solved:**
  • Simplifies the replacement and maintenance of key components in electrophotographic apparatus.
  • Enhances print quality and durability of the photosensitive member.
    • Benefits:**
  • Improved printing performance and longevity of the process cartridge.
  • Cost-effective and efficient maintenance of the electrophotographic apparatus.
    • Commercial Applications:**

This technology can be utilized in office printers, photocopiers, and commercial printing machines to enhance print quality and reduce maintenance costs.

    • Questions about the Technology:**

1. How does the specific polycarbonate resin used in the photosensitive member's surface layer contribute to print quality? 2. What are the advantages of incorporating silicon atom-containing compound particles in the toner as an external additive?


Original Abstract Submitted

Provided is a process cartridge integrally supporting an electrophotographic photosensitive member, a developing unit, and a cleaning unit, and being detachably attachable onto a main body of an electrophotographic apparatus. A surface layer of the electrophotographic photosensitive member comprises a polycarbonate resin having a structural unit represented by the formula (1), a structural unit represented by the formula (2), and a structural unit represented by the formula (3). Toner contains: a toner particle containing a resin; and an external additive. The external additive contains a particle of a silicon atom-containing compound, and a content ratio of the particle of the silicon atom-containing compound in the toner is 2.0 to 3.0 mass % with respect to a total mass of the toner. Also provided is an electrophotographic apparatus including the process cartridge.

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