Patent ID: 7072607

Claim:
A developing apparatus comprising: a developer carrying member for carrying a developer to develop an electrostatic latent image formed on an image bearing member, said developer carrying member having an elastic property; a scraping/supplying member, contacted into said developer carrying member, for supplying the developer to said developer carrying member and for scraping the developer off said developer carrying member, said scraping/supplying member having an elastic property, wherein said developer carrying member has a hardness which is higher than that of said scraping/supplying member, and wherein said developer carrying member and said scraping/supplying member satisfy that in a state in which said scraping/supplying member is out of contact with said developer carrying member, a radius of curvature of said scraping/supplying member is larger than a radius of curvature of said developer carrying member at a position of contact between said scraping/supplying member and said developer carrying member; and wherein the radius of curvature of said developer carrying member is 4–10 mm at the position of the contact in the state in which said scraping/supplying member is out of contact with said developer carrying member.