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Developing device and image forming device including the developing device

A developing device and a developer technology, which are applied in the direction of an electric recording process applying a charge pattern, equipment and instruments for an electric recording process applying a charge pattern, etc., can solve the problems such as the reduction of the charging performance of the toner, and achieve a stable developer amount. Effect

Active Publication Date: 2019-08-02
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the carrier that is stirred together with the toner in the developing container deteriorates as the stirring frequency increases, and as a result, the charge-imparting performance of the carrier to the toner gradually decreases.

Method used

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  • Developing device and image forming device including the developing device
  • Developing device and image forming device including the developing device
  • Developing device and image forming device including the developing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] right in figure 1 In the color printer 100 shown, changes in the amounts of developers in the developing devices 3 a to 3 d were investigated when the conveying speed of the developer, the toner density, and the absolute humidity were changed. In addition, the test was performed in the cyan image forming part Pa including the photosensitive drum 1 a and the developing device 3 a.

[0072] As a test method, the developing device 3a of the present invention was as Figure 5 As shown: the rotating shaft 44b of the second stirring screw conveyor 44 is connected with the second bias circuit 31 and the voltage variable device 32, and the inner wall surface of the second conveying chamber 22d opposite to the restricting part 52 is equipped with a weak magnetic The conductive plate 70 is made of stainless steel (SUS304). In the developing device 3a of the comparative example, the second bias circuit 31 and the voltage variable device 32 are not connected to the rotating shaft ...

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PUM

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Abstract

The present invention provides a developing device including a developing container, a first agitating member, a second agitating member, and a developer carrier, and an image forming apparatus including the developing device. The developing container accommodates two-component developer, and it has: a plurality of conveying chambers, including a first conveying chamber and a second conveying chamber; a developer supply port, which replenishes the developer in the developing container; and a developer discharge port, which discharges the remaining developer. A conductive restricting portion is formed on the second agitating member. The restricting portion is disposed on the downstream side of the communication portion with respect to the developer conveying direction and faces the developer discharge port. The restricting portion restricts the flow of the developer to the developer. The outlet side moves. A conductive plate is disposed on an inner wall surface of the developing container facing the restricting portion. During rotational driving of the first stirring member and the second stirring member, an AC bias is applied to at least one of the restricting portion and the conductive plate to generate a potential difference between the restricting portion and the conductive plate.

Description

technical field [0001] The present invention relates to a developing device used in image forming devices such as copiers, printers, facsimile machines, and digital multifunction machines using electrophotography, and an image forming device including the developing device. In particular, the supply is composed of toner and carrier A developing device that discharges a two-component developer and discharges the remaining developer, and an image forming apparatus provided with the developing device. Background technique [0002] In an image forming apparatus, a latent image formed on an image carrier made of a photoreceptor or the like is developed by a developing device and visualized as a toner image. As one of such developing devices, a two-component developing system using a two-component developer is employed. This type of developing device accommodates a developer consisting of a carrier and toner in a developing container, is provided with a developing roller that sup...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08G03G15/09
CPCG03G15/0887G03G15/0889G03G15/0907G03G21/1652G03G15/0893G03G15/0844
Inventor 末浪浩二
Owner KYOCERA DOCUMENT SOLUTIONS INC