Patent ID: 8180263
Filing Date: 2012-05-15
Classification: G03G

Abstract:
1. A developing apparatus comprising: an image bearing body on which an electrostatic latent image is formed; a developing member that supplies a developer material to the electrostatic latent image; a supplying member that supplies the developer material to said developing member, the supplying member including a cylindrical surface rotatable and in contact with the developing member; a developer material chamber that holds the developer material therein, the developer material chamber having a first gap formed between the cylindrical surface and a circumferential inner wall surface of the developer material chamber; and a projection that projects from the circumferential inner wall surface of said developer material chamber toward said supplying member, the projection being disposed downstream of the first gap with respect to a rotation of the supplying member, the projection having a first guide surface forming a second gap with the cylindrical surface of the supplying member, the second gap being smaller than the first gap and not more than 0.5 mm.