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Developing device and image forming device

Technology of a developing device and developing roller

Inactive Publication Date: 2018-11-02
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the lower layer toner is overcharged as described above, the electrostatic transport force increases, and the toner layer formed in the sealed area is thicker than other parts (outside the sealed area), causing toner coating or toner scattering. Waiting for bad

Method used

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  • Developing device and image forming device
  • Developing device and image forming device
  • Developing device and image forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Hereinafter, a developing device and an image forming apparatus including the developing device according to an embodiment of the present invention will be described with reference to the drawings. figure 1 It is a front cross-sectional view showing the structure of an image forming apparatus including a developing device according to an embodiment of the present invention.

[0042] An image forming apparatus 1 according to an embodiment of the present invention is, for example, a multifunction peripheral having multiple functions of a copy function, a print function, a scan function, and a facsimile function. The image forming apparatus 1 is configured to include an operation unit 47 , an image forming unit 12 , a fixing unit 13 , a paper feeding unit 14 , a document supply unit 6 , a document reading unit 5 , and the like in an apparatus main body 11 .

[0043] When image forming apparatus 1 performs a document reading operation, document reading unit 5 optically read...

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PUM

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Abstract

A developing device includes a developing roller, a regulating blade, seal members, and contact members. The regulating blade extends in a rotation axis direction of the developing sleeve, is disposed opposite to a circumferential surface of the developing sleeve, and regulates a quantity of the toner on the circumferential surface of the developing sleeve. The seal members are disposed opposite to the circumferential surface without being in contact with both ends of the developing region in the rotation axis direction. Each contact member is an edge on the developing region side in the rotation axis direction, provided at a position at an upstream side in a rotational direction of the circumferential surface of the developing sleeve relative to an arrangement position of the regulating blade, and configured to be in contact with the circumferential surface of the developing sleeve.

Description

technical field [0001] The present invention relates to a developing device for forming a toner image by supplying toner to an electrostatic latent image electrophotographically formed on the peripheral surface of a photoreceptor drum, and an image forming apparatus including the developing device. It relates to a technology for preventing the leakage of toner on the peripheral surface of a developing sleeve. Background technique [0002] In an electrophotographic image forming apparatus, toner is supplied from a developing device to an electrostatic latent image formed on a surface of a photoreceptor drum to form a toner image. The developing device has a developing roller composed of a magnetic roller and a developing sleeve on which a toner layer is formed on the peripheral surface, and the toner is supplied from the developing sleeve to the surface of the photoreceptor drum. [0003] In such a developing device, a sealing member made of a magnetic material is used as a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08G03G15/00
CPCG03G15/0942G03G15/0812G03G15/0817
Inventor 山岸義弘
Owner KYOCERA DOCUMENT SOLUTIONS INC