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Developing device

A developing device and developing agent technology, applied in electrography, optics, instruments, etc., to achieve the effect of preventing fusion bonding

Active Publication Date: 2006-06-14
KONICA MINOLTA BUSINESS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Moreover, the technical problem of completely eliminating the intrusion of toner into the bearing portion of the rotating member constituting the developing device is still in an unestablished state. more obvious

Method used

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Examples

Experimental program
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Embodiment

[0207] Hereinafter, although an Example is given and this invention is demonstrated concretely, embodiment of this invention is not limited to these. In addition, in the following examples, "part" means a mass part.

[0208]

[0209] (production of toner particles)

[0210] 1. Preparation of two-component system developer

[0211] (1) Synthesis of Latex-1

[0212] Put 509.83g of styrene, 88.67g of n-butyl acrylate, 34.83g of methacrylic acid, and 21.83g of tert-dodecyl mercaptan into a four-neck flask with a capacity of 1 liter equipped with a stirring device, a cooling tube, and a temperature sensor. , 66.7g of the ester compound (20), the temperature in the bottle was raised to 80°C, stirred until the ester compound (20) was dissolved, and the temperature was maintained. On the other hand, an aqueous surfactant solution in which 1.0 g of sodium dodecylbenzenesulfonate was dissolved in 2,700 ml of pure water was heated so that the internal temperature also reached 80° C....

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PUM

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Abstract

The present invention provides a method for preventing intrusion of toner into a bearing portion of a rotating member in a developing device, and preventing friction aggregation on a sliding surface with a shaft portion of a rotating member or frictional heat caused by the bearing portion. A fused developing device having a bearing portion with an improved shape, characterized by comprising a developer container for storing developer, a rotating member for stirring and transporting the developer, and holding the rotating member in the developer container. The rotating member holding device inside the container, wherein the rotating member holding device holds the shaft portion of the rotating member while having a gap with the shaft portion.

Description

technical field [0001] The present invention relates to a developing device for developing an electrostatic latent image formed on an image carrier into a toner image. Agent coagulation and fusion bonding developing device. Background technique [0002] In an electrophotographic image forming apparatus, first, a charging device uniformly charges the surface of an image carrier, and operates an exposure device based on a document or image data to form a latent image on the image carrier. Next, a two-component developer containing a toner and a carrier is introduced into the developing area, and the latent image on the image carrier is developed into a toner image by contact development or non-contact development. The formed toner image is then transferred to a transfer material such as paper by a transfer device, and the toner image on the transfer material is thermally fixed by a fixing device to form an image. [0003] A developing device that develops a latent image on a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/06G03G21/10
Inventor 吉田秀幸谷本博史
Owner KONICA MINOLTA BUSINESS TECH INC