DEVELOPER REGULATING MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND MANUFACTURING METHOD OF DEVELOPER REGULATING MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a developer regulating member capable of ensuring stable regulation of developer even used for a long time, while restraining a manufacturing cost increase, and to provide a developing device having the developer regulating member, an image forming apparatus and process cartridge that have this developing device, and a manufacturing method for the developer regulating member.

SOLUTION: The average crystal particle diameter D [μm] of a plate-like member 12a of a thinning blade 12, which is the developer regulating member disposed in contact with a developing roller 11 serving as a developer carrier and the curvature radius R [μm] of its curved part 12b satisfy the following relationship: D≤60.53×R×10-3-12.61.

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