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Developing roller and imaging apparatus using the same

A developing roller and resin layer technology, which is applied to the electric recording process using charge patterns, equipment and instruments for electric recording processes using charge patterns, etc., can solve the problems that carbon materials cannot be used and resin curing cannot be fully carried out, etc. Achieve the effect of saving large-scale equipment and space, and suppressing uneven film formation

Inactive Publication Date: 2009-07-08
BRIDGESTONE CORP
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Problems solved by technology

[0012] However, even if an ultraviolet curable resin containing carbon-based conductive agent is to be cured by ultraviolet rays after coating, since carbon is opaque, it will also absorb ultraviolet rays, and it is difficult for ultraviolet rays to reach deep into the layer. Possibility that it cannot be performed sufficiently, therefore, there is a problem that carbon-based substances cannot be used as a conductive agent

Method used

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  • Developing roller and imaging apparatus using the same
  • Developing roller and imaging apparatus using the same
  • Developing roller and imaging apparatus using the same

Examples

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Embodiment

[0234] The present invention will be described in detail below through examples and comparative examples, but the present invention is not limited to these examples.

[0235] When the developing roller does not have an elastic layer, the resin layer is formed directly on the shaft member made of aluminum pipe, or when the developing roller has an elastic layer, after the elastic layer is formed on the shaft member, the resin layer is formed, and the image 3 The developing roller with the structure shown is used as an example. In addition, in order to compare with the developing roller of the example, a developing roller having a partly different composition from the present invention was manufactured and used as a comparative example. Furthermore, with respect to the developing rollers of these Examples and Comparative Examples, measurement evaluation of roller characteristics and image evaluation were performed.

[0236] The material table showing the materials used to form ...

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Abstract

The present invention provides a developing roller that does not require a drying line during the formation of a resin layer and that can use a carbon-based conductive agent for imparting conductivity to a resin layer, and provides an image forming method using the developing roller device. The developing roller 1 has a shaft member 2 made of a metal pipe and a resin layer 4 . The resin layer 4 is composed of an ultraviolet curable resin containing a carbon-based conductive agent and an ultraviolet polymerization initiator whose maximum wavelength in the ultraviolet absorption band is 400 nm or more. The resin layer 4 may also be composed of an electron beam curable resin containing a conductive agent.

Description

technical field [0001] The present invention relates to a developing roller used in electrophotographic devices such as copiers and printers, or image forming devices such as electrostatic recording devices, and an image forming device using the developing roller. Background technique [0002] In electrophotographic image forming apparatuses such as copiers and printers, a non-magnetic developer (toner) is supplied to a latent image holder such as a photosensitive drum holding a latent image, and the toner adheres to the latent image of the latent image holder And make the latent image visible, as the general example of this developing method, there is the non-magnetic jump developing method as follows: on the outer periphery of the developing roller that is provided with the latent image holder with a small gap and arranged, the charged toner is carried, The developing roller is rotated in a state where a voltage is applied between the latent image holder and the developing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08
Inventor 高木光治赤间秀洋
Owner BRIDGESTONE CORP
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