| 摘要 |
PROBLEM TO BE SOLVED: To appropriately prevent deterioration in the image quality of an image. SOLUTION: A developing device includes: a rotatable toner bearing roller that has regularly-arranged projecting sections and recessed sections and bears toner whose volume average particle diameter is smaller than a depth of the recessed 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; and a regulation blade that is for regulating an amount of the toner borne on the toner bearing roller by abutting against the toner bearing roller at its abutting part 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, and is arranged so that a tip edge of the regulation blade in a lateral direction and a thickness direction thereof may face an upstream side in a rotating direction of the toner bearing roller. A distance from the tip edge of the regulation blade to the projecting section when the tip edge is opposed to the projecting section out of the projecting sections and the recessed sections is smaller than the volume average particle diameter. COPYRIGHT: (C)2009,JPO&INPIT |
