Developing apparatus and method for assembling the same
AssigneeCanon Kabushiki Kaisha
InventorsKazuo Chadani, Hiroomi Matsuzaki, Akira Suzuki
Life of this patent
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Abstract
The present invention relates to a developing apparatus which has a developer bearing member for bearing and conveying developer to a developing position, a developer regulating member for regulating a thickness of the developer born on the developer bearing member, and voltage being applied to the developer regulating member, a magnetic seal member opposed to an end in a longitudinal direction of the developer bearing member, and an elastic member for urging the magnetic seal member against the developer regulating member to establish electrical communication between the developer regulating member and the magnetic seal member.
Claims26
A developing apparatus comprises:
- a developer bearing member for bearing and conveying developer to a developing position;
- a developer regulating member for regulating a thickness of the developer borne on said developer bearing member, and voltage being allowed to be applied to said developer regulating member;
- a magnetic seal member opposed to an end in a longitudinal direction of said developer bearing member;
- and
- an elastic member for urging said magnetic seal member against said developer regulating member to establish electrical connection between said developer regulating member and said magnetic seal member.
A method for assembling a developing apparatus including a developer bearing member for bearing and conveying developer to a developing position, a developer regulating member for regulating a thickness of the developer borne on said developer bearing member, a magnetic seal member opposed to an end in a longitudinal direction of said developer bearing member, and a spring member for urging said magnetic seal member against said developer regulating member, said method comprising the steps of:
- a first step for attaching said spring member to a magnetic seal member attaching portion;
- a second step for attaching said magnetic seal member to said magnetic seal member attaching portion so that said magnetic seal member is provided on said spring member after said first step;
- and
- a third step for attaching said developer regulating member to a developer regulating attaching portion by urging said magnetic seal member by means of said developer regulating member in opposition to an elastic force of said spring member, after said second step.
A developing apparatus comprises:
- a developer bearing member for bearing and conveying developer to a developing position;
- a developer regulating member for regulating a thickness of the developer borne on said developer bearing member, and a voltage being applied to said developer regulating member;
- a magnetic seal member opposed to an end in a longitudinal direction of said developer bearing member;
- and
- an elastic member for urging said magnetic seal member against said developer regulating member to establish an electrical connection between said developer regulating member and said magnetic seal member, wherein said elastic member is electrically connected to said developer regulating member in a route different from said magnetic seal member.
A developing apparatus comprising:
- a developer bearing member for bearing and conveying developer to a developing position;
- a developer regulating member for regulating a thickness of the developer borne on said developer bearing member, and voltage being allowed to be applied to said developer regulating member;
- a magnetic seal member opposed to an end in a longitudinal direction of said developer bearing member;
- and
- a spring member for urging said magnetic seal member against said developer regulating member to establish electrical connection between said developer regulating member and said magnetic seal member.
Dependencies are inferred from the claim text.