18508675. DEVELOPING ROLLER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS simplified abstract (CANON KABUSHIKI KAISHA)
DEVELOPING ROLLER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS
Organization Name
Inventor(s)
KAZUAKI Nagaoka of Shizuoka (JP)
DEVELOPING ROLLER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18508675 titled 'DEVELOPING ROLLER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS
Simplified Explanation
The patent application describes a developing roller with an electroconductive substrate and an electroconductive elastic layer made of diene-based rubber. The elastic layer is at least 0.30 mm thick and has a crown shape, with the center portion having a larger diameter than the end portions. The elastic moduli in specific regions of the layer are each 500 MPa or higher.
- Electroconductive substrate
- Electroconductive elastic layer with diene-based rubber
- Thickness of at least 0.30 mm
- Crown shape design with varying diameters along the axis
- High elastic moduli in specific regions
Potential Applications
- Photocopiers - Laser printers - Fax machines
Problems Solved
- Improved toner transfer efficiency - Reduced wear and tear on the roller - Enhanced image quality
Benefits
- Consistent and reliable performance - Extended roller lifespan - Cost-effective solution for printing needs
Original Abstract Submitted
A developing roller comprising an electroconductive substrate and an electroconductive elastic layer constituted by a single layer on an outer periphery of the substrate. The elastic layer contains a diene-based rubber, has a thickness of 0.30 mm or more, and the elastic layer has a crown shape in which an outer diameter of a center portion in a longitudinal direction along an axis of the substrate is larger than an outer diameter of each of both end portions in the longitudinal direction. Elastic moduli E11, E12 and E13 in a first region of the elastic layer in cross-sections at positions P1, P2 and P3 of the elastic layer are each 500 MPa or more.
