Patent ID: 7796925

Claim:
A developer cartridge, comprising: a chamber holding a developer therein and including an inner surface and an opening through which the developer is discharged; a rotating body rotatably supported in said chamber; a resilient scraper blade having one end fixed to said rotating body and extending away from said rotating body, a free end of said scraper blade scraping the surface when said rotating body rotates, wherein when said scraper blade extends in a first direction through the opening and a plane in which the inner surface lies, the first direction forming an acute angle with the plane at a position where the scraper blade extends through the plane; and a shutter movable in sliding contact with the inner surface of said chamber, said shutter including an outer surface slidable on the inner surface between a closing position where said shutter closes the opening and an opening position where said shutter opens the opening, said shutter being on an acute angle side of said scraper blade and moving from the opening position to the closing position toward the scraper blade.