Patent ID: 8150301

Claim:
A developing apparatus comprising: (a) a development chamber, including: (a-1) a developer carrying member for carrying a developer to develop an electrostatic image formed on an image bearing member with a developer; (a-2) a developer feeding member, contactable to said developer carrying member, for supplying the developer to said developer carrying member at a first contact portion where said developer carrying member contacts said developer feeding member, said developer feeding member rotates substantially upwardly in a direction of peripheral movement opposite a peripheral movement of said developer carrying member at the first contact portion; and (a-3) a regulating member for regulating an amount of the developer carried on said developer carrying member, said regulating member having a free end portion contacted to said developer carrying member and only an edge of said regulating member contacting a peripheral surface of said developer carrying member, wherein said developer feeding member is supplied with a voltage such that the voltage minus a potential of said developer carrying member has a polarity which is the same as a regular charging polarity of the developer, and wherein said developer carrying member is provided with a surface facing substantially downward, in a range from a downstream-most edge of the first contact portion of said developer carrying member with respect to a rotational direction of said developer carrying member to a second contact portion between said developer carrying member and said regulating member; and (b) a developer storage container, provided below said development chamber, for storing the developer, including: (b-1) a developer conveying member for conveying the developer contained in said developer storage container to said development chamber, wherein said development chamber has a storage portion which intersects a vertical line passing through the downstream-most edge and which stores the developer conveyed by said developer conveying member.