Canon Kasei Kabushiki Kaisha

Canon Kabushiki Kaisha

Toru Ishigaki

Tetsuya Kobayashi

Hiroshi Sasame

Yoshiro Saito

Naoki Enomoto

Arihiro Yamamoto

Naohiko Nakano

Kazuaki Iwata

Mitsuru Honda

Noriyuki Yanai

Satoshi Fukuzawa

Manabu Takashima

A developer level control blade is provided which can form a developer layer on a developer carrying member in a proper thickness and in a uniform state and can keep the developer, in particular, color toner particles from melt-adhering to the charge control face so that faulty images such as lines and non-uniformity can be kept from occurring. Also provided is a process for manufacturing this developer level control blade. The process for manufacturing the developer level control blade is characterized by having the steps of extruding a blade member material melted to liquefy, covering therewith a support member thin-plate metal member at an edge portion thereof to join the both together, and cooling the blade member material to solidify, followed by cutting in a preset length.

Developer level control blade and process for manufacturing developer level control blade

A blade member manufacturing process using no mold and a developer quantity control blade manufacturing process using this blade member are disclosed in which a material for the blade member is extruded onto a charge control face face-transferring sheet in a uniform thickness, and solidified to form a layer, and the layer is cut into the shape of a blade member.

Processes for manufacturing blade member of developer quantity control blade

In a developing assembly comprising a developer-carrying member and a developer quantity control blade kept in pressure contact with the developer-carrying member, the developer-carrying member has a deformation percentage D of 0.5% or less in the direction of pressure contact, and the developer quantity control blade has a ten-point average roughness Rz of from 0.3 &#x3bc;m to 20 &#x3bc;m at its surface on the side kept in contact with the developer-carrying member (a charge control face). The developing assembly can prevent faulty images such as lines and uneven images due to the deformation of developer-carrying member even though any deformation due to the pressure contact of the developer quantity control blade has taken place in the developer-carrying member while the developing assembly is stopped.

Developing assembly featuring a developer-carrying member having specified ranges of deformation and hardness and a developer quality control blade having a rough contact surface

This specification discloses a developer regulating member and a developing device provided with this developer regulating member. The developer regulating member is provided with a blade having a rubber base member and thermoplastic resin layers provided on the both surfaces of the rubber base member, and a support member adhesively secured to one surface of the blade.

Developer regulating member having thermoplastic resin layers provided

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:

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Chiba, Japan

Toru Ishigaki