Patent ID: 7620351
Filing Date: 2009-11-17
Classification: G03G

Abstract:
1. A developing device, comprising: a stirring roller having stirring blades arranged to stir a developer; a developing roller arranged to transfer the developer to an electrostatic latent image; a control member arranged to control an amount of the developer transferred to the electrostatic latent image by the developing roller; a reflux plate arranged to flow back excess developer by controlling of said control member to said stirring roller; and a scraping member physically attached to said reflux plate at a vicinity of said reflux plate disposed at an outer periphery of said developing roller, wherein one end portion of said reflux plate is disposed in a vicinity of an outer periphery of said stirring roller, and part of the developer stirred by said stirring roller flies toward said reflux plate, wherein said one end portion of said reflux plate is disposed above a fly peak point in a vertical direction of said one end portion of the developer provided by a rotation of said stirring roller, wherein said one end portion of said reflux plate is disposed at a position where a plane passing through a rotation center axis of said stirring roller crosses said reflux plate at right angles, wherein an inclination angle of said reflux plate is larger than an angle of repose of the developer, wherein said scraping member faces said developing member, wherein said developing roller comprises: wherein in a first gap (G wherein the second gap G wherein one of the plurality of bar magnets faces the second gap G wherein a relationship G