Patent ID: 7756452

Claim:
A developing device which supplies developer to an electrostatic latent image bearing body of an image forming apparatus, comprising: a container housing which has an opening in a position opposite to the electrostatic latent image bearing body and stores developer to be supplied to the electrostatic latent image bearing body; a developing roller which is rotatably disposed and a part of which is exposed from the opening; a regulating member which is disposed along an axial direction of the developing roller and whose leading end is in a position of facing the developing roller so as to regulate the thickness of a developer layer on the developing roller; and a pair of holding members which hold the developing roller and the regulating member on the container housing, each holding member including a developing roller support portion for supporting an end of the developing roller and a regulating member retaining portion for retaining the regulating member onto the container housing, wherein the pair of holding members each include a regulating member contact portion which is formed on an outer periphery of the developing roller support portion and comes into contact with the leading end of the regulating member so as to regulate the distance between the developing roller and the regulating member.