Canon kabushiki kaisha (20240111227). DEVELOPING DEVICE, CLEANING METHOD, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS simplified abstract

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DEVELOPING DEVICE, CLEANING METHOD, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS

Organization Name

canon kabushiki kaisha

Inventor(s)

RYO Sugiyama of Shizuoka (JP)

TAIJI Katsura of Shizuoka (JP)

DEVELOPING DEVICE, CLEANING METHOD, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240111227 titled 'DEVELOPING DEVICE, CLEANING METHOD, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS

Simplified Explanation

The patent application describes a developing device with a hardened surface layer on the developing roller, fine particles on the roller's outer surface, and silica particles in the toner.

  • Developing roller with hardened surface layer and fine particles:
 - The developing roller has a surface layer that is hardened to improve durability.
 - Fine particles made of an organosilicon compound with a hemispherical shape are present on the outer surface of the roller.
 - The fine particles have a specific particle diameter range to enhance development performance.
  • Toner with silica particles as external additive:
 - The toner includes silica particles as an external additive to improve adhesion.
 - The adhesion rate of the silica particles is 50% or more, ensuring better toner transfer and image quality.

Potential Applications

This technology could be applied in photocopiers, laser printers, and other printing devices to enhance image quality and printing performance.

Problems Solved

1. Improved durability of the developing roller. 2. Enhanced adhesion and transfer of toner particles for better image quality.

Benefits

1. Increased longevity of the developing device. 2. Higher quality prints with improved toner adhesion. 3. Consistent and reliable printing performance.

Potential Commercial Applications

"Enhanced Toner Adhesion Technology for Printing Devices"

Possible Prior Art

There may be prior art related to developing rollers with hardened surface layers and toners with silica particles as additives, but specific examples are not provided in the patent application.

Unanswered Questions

1. What specific organosilicon compounds are used in the fine particles on the developing roller? 2. How does the presence of silica particles in the toner affect the overall printing cost compared to traditional toners?


Original Abstract Submitted

a developing device comprising a developing roller in which a vicinity of an outer surface of a surface layer is hardened, a toner supply roller, and a toner, wherein the developing roller has fine particles comprising an organosilicon compound and having a substantially hemispherical shape on the outer surface, a particle diameter of the fine particles is within a specific range, and the toner comprises silica particles as an external additive and a adhesion rate of the silica particles is 50% or more.