Regulating member, developing device and process cartridge
AssigneeCanon Kabushiki Kaisha
InventorsTakashi Kase, Hideaki Hasegawa
Life of this patent
Estimating the term…
Abstract
A regulating member for regulating a developer amount carried on a developer carrying member includes a plate-like supporting member having an elasticity, the supporting member being provided with a fixed portion for being fixed to a fixed part; a first contact portion contactable to the developer carrying member, the first contact portion protruding from the regulating member from a side of the supporting member; and a second contact portion contactable to and the developer carrying member, the second contact portion being at a position closer to the fixed portion than the first contact portion.
Claims10
A developing apparatus for developing an electrostatic latent image formed on an image bearing member, said developing apparatus comprising:
- a developer carrying member for carrying a developer for developing the electrostatic latent image;
- and
- a regulating member for regulating a developer amount carried on said developer carrying member, said regulating member including:
- a plate-like supporting member having an elasticity, said supporting member being provided with a fixed portion for being fixed to a fixed part, and said supporting member having a free end disposed at an upstream side with respect to a rotational moving direction of said developer carrying member;
- a first contact portion provided on said supporting member and protruding toward said developer carrying member to contact to said developer carrying member;
- and
- a second contact portion provided on said supporting member and positioned downstream of said first contact portion with respect to the rotational moving direction,
- wherein pressure applied by said regulating member to said developer carrying member has a plurality of local maximum values along the rotational moving direction of said developer carrying member, and an upstreammost one of the local maximum values is maximum of the local maximum values.
A process cartridge detachably mountable to a main assembly of an image forming apparatus, said process cartridge comprising:
- an image bearing member for carrying an electrostatic latent image;
- a developer carrying member for carrying a developer for developing the electrostatic latent image;
- and
- a regulating member for regulating a developer amount carried on said developer carrying member, said regulating member including;
- a plate-like supporting member having an elasticity, said supporting member being provided with a fixed portion for being fixed to a fixed part, and said supporting member having a free end disposed at an upstream side with respect to a rotational moving direction of said developer carrying member;
- a first contact portion provided on said supporting member and protruding toward said developer carrying member to contact to said developer carrying member;
- and
- a second contact portion provided on said supporting member and positioned downstream of said first contact portion with respect to the rotational moving direction,
- wherein pressure applied by said regulating member to said developer carrying member has a plurality of local maximum values along the rotational moving direction of said developer carrying member, and an upstreammost one of the local maximum values is maximum of the local maximum values.
Dependencies are inferred from the claim text.