Patent ID: 7715766

Claim:
A developing unit for visualizing an electrostatic latent image formed on an electrostatic latent image bearer with a developer that is prepared and electrified by mixing two components, an electrostatically chargeable toner and magnetic carrier, comprising: a collecting roller for collecting the developer falling from the developing area of a developing roller that supplies the toner to the electrostatic latent image bearer, wherein the collecting roller does not contact the developing roller; and a developer remover for removing the developer collected by the collecting roller from the collecting roller, characterized in that the developer remover comprises: a casing for supporting the collecting roller; a scraper disposed elongated along the axial direction of the collecting roller and abutted against the outer periphery of the collecting roller so as to scrape off the developer adhering to the outer periphery of the collecting roller; and, a supporter for supporting the scraper, and the supporter presses the scraper against the casing to hold the scraper.