Developing device, image forming apparatus, and image forming system

Abstract

A developing device includes a rotatable toner bearing roller and a regulation blade. The toner bearing roller has regularly-arranged projecting sections and non-projecting sections, bears toner whose volume average particle diameter is smaller than a depth of the non-projecting section relative to the projecting section, and develops a latent image borne on an image bearing member with the toner borne on the toner bearing roller. The regulation blade is for regulating an amount of the toner borne on the toner bearing roller, and abuts, with a predetermined width, against a circumferential surface of the toner bearing roller in a circumferential direction thereof in such a manner that a longitudinal direction of the regulation blade is along a direction of a rotation axis of the toner bearing roller. A tip edge of the regulation blade in a lateral direction and a thickness direction thereof is located within an abutting section having the predetermined width. The predetermined width is larger than a maximum width, in the circumferential direction, of the non-projecting section.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. 2007-144063 filed May 30, 2007, which is incorporated herein by reference. technical field [0003] The present invention relates to a developing device, an image forming device and an image forming system. Background technique [0004] Image forming apparatuses, such as laser beam printers, are already known. Such an image forming apparatus includes, for example, a photoconductor as an example of an image bearing member bearing a latent image; and a developing device having a toner bearing roller as a bearing roller for bearing toner and developing a bearing on a surface with the toner. Example of a toner carrying assembly for a latent image on a photoconductor. Based on an image signal or the like obtained from an external device such as a computer, the image forming apparatus positions the developing device at a developing position where the ton...

AI Technical Summary

Problems solved by technology

[0008] However, in the case of edge adjustment, there is a possibility that when the adjustment blade adjusts the amount of toner carried on the toner carrying roller, The tip edge of the adjustment blade may enter and hit a non-convex portion of the toner carrying roller, causing curling or chipping of the tip edge

This kind of problem is a cause of detracting from the function of adjusting the scraper

Images