Development device, and image forming apparatus and process cartridge incorporating same

摘要

A development device includes a developer bearer to carry by rotation developer to a development range facing a latent image bearer, and a developer regulator to adjust an amount of developer transported to the development range by the developer bearer. Multiple projections are formed in a surface of the developer bearer, and, in a direction in which the developer bearer rotates, a downstream end of each of the multiple projections is higher than an upstream end of the projection.

主权项

1. A development device comprising:
a developer bearer to carry by rotation developer to a development range facing a latent image bearer; and a developer regulator to adjust an amount of developer transported to the development range by the developer bearer, wherein multiple projections are formed in a surface of the developer bearer, and in a direction in which the developer bearer rotates, a downstream end of each of the multiple projections is higher than an upstream end of the projection; wherein the developer regulator is constructed of a metal material and comprises a blade having a first end held by a regulator holder and a second end that contacts the multiple projections formed in the surface of the developer bearer and further comprises an opposed face facing the developer bearer and an end face on a second end side, and the second end that contacts the surface of the developer bearer is a linear portion where a virtual plane extending along the opposed face crosses a virtual plane extending along the end face on the second end side of the developer regulator.