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US 5,689,783 AGranted
Elastic blade and developing device using the same
AssigneeCanon Kabushiki Kaisha
InventorsHiroshi Sasame, Toru Ishigaki, Noriyuki Yanai, Tetsuya Kobayashi, Naoki Enomoto, Yoshiro Saito, Arihiro Yamamoto
Life of this patent
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Abstract
An elastic blade is provided with a rubber layer and a surface resin layer provided on the rubber layer, the surface resin layer satisfying the following condition: 3.ltoreq.E.times.t.ltoreq.30, where E: elastic modulus of the surface resin layer (Kg/cm.sup.2); t: thickness of the surface resin layer (cm).
Claims10
An elastic blade comprising:
- a rubber layer;
- and
- a surface resin layer provided on the rubber layer;
- wherein said surface resin layer satisfies the following condition:
- 3.ltoreq.E.times.t.ltoreq.30,
- where
- E:
- elastic modulus of the surface resin layer (kg/cm.sup.2);
- t:
- thickness of the surface resin layer (cm).
7 more elements
A developing device comprising:
- a developer carrying member carrying a developer thereon;
- and
- an elastic blade forming a nip with said developing carrying member and regulating the layer thickness of the developer on said developer carrying member;
- said elastic blade having a rubber layer and a surface resin layer provided on the rubber layer;
- wherein the surface resin layer satisfies the following condition:
- 3.ltoreq.E.times.t.ltoreq.30,
- where
- E:
- elastic modulus of the surface layer (kg/cm.sup.2);
- t:
- thickness of the surface resin layer (cm).
8 more elements
A method of manufacturing an elastic blade, comprising the steps of:
- preparing a rubber layer;
- forming on the rubber layer a resin layer satisfying the following condition:
- 3.ltoreq.E.times.t.ltoreq.30,
- where
- E:
- elastic modulus of the resin layer (kg/cm.sup.2);
- t:
- thickness of the resin layer (cm);
- and
- cutting an elastic plate comprising the resin layer formed on the rubber layer into a predetermined size.
7 more elements
Dependencies are inferred from the claim text.