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image forming device

An image and cleaning device technology, which is applied to the electrical recording process using charge graphics, equipment and instruments for the electrical recording process using charge graphics, and can solve the problems such as the reduction of the toner effect

Active Publication Date: 2021-06-01
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there is the following problem in the above-mentioned conventional image forming apparatus: that is, if toner or paper dust etc. are clogged and accumulated between the brush fibers of the pre-cleaning brush, the above-mentioned effect of disturbing the toner will be reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0025] figure 1 It is a schematic diagram showing the overall configuration of the image forming apparatus 1 . The image forming apparatus 1 is, for example, a four-color tandem color printer, and includes: a developing unit A; an intermediate transfer unit B arranged above the developing unit A; ) toner cartridge C. Further, the image forming apparatus 1 includes a primary transfer portion 6 , a secondary transfer portion 9 , a fixing portion 11 , and an optical scanning device 15 . The developing unit A has a plurality of (four) image forming units arranged above the optical scanning device 15 . The intermediate transfer unit B includes an endless intermediate transfer belt 7 , and the intermediate transfer belt 7 is arranged above the four image forming units 16 along the arrangement direction of the image forming units 16 .

[0026] A paper feed cassette 3 is arranged below the interior of the casing 2 of the image forming apparatus 1 . Pre-printing sheets (not shown) ...

Embodiment approach 2

[0053] Image 6 and Figure 7 Embodiment 2 is shown. This embodiment differs from the above-mentioned Embodiment 1 in that two suction fans 45 are provided on the upper side of the support member 30 . In addition, in the following description, the same code|symbol is attached|subjected to the same component as Embodiment 1, and a detailed description is abbreviate|omitted.

[0054] The two suction fans 45 are arranged symmetrically with respect to the center position of the support member 30 in the longitudinal direction. Each suction fan 45 is square in plan view, and is supported across the left side wall 30 d and the right side wall 30 e of the support member 30 . The suction fan 45 sucks foreign matter between the respective brush fibers of the pre-cleaning brush 39 through the respective openings 30f of the support wall 30a. Therefore, the accumulation of foreign matter between the brush fibers can be suppressed more reliably. Therefore, the same functions and effect...

Embodiment approach 3

[0056] Figure 8 and Figure 9 Embodiment 3 is shown. The present embodiment differs from the above-described second embodiment in the shape of the support member 30 and the arrangement structure of the suction unit.

[0057] In the present embodiment, the support member 30 has a duct shape extending in the belt width direction along the transfer surface of the intermediate transfer belt 7 . In this duct shape, only the width direction side (the rear side of the image forming apparatus) is opened. The lower side wall of the support member 30 (the wall portion facing the transfer surface of the intermediate transfer belt 7 ) is set as the support wall 30 a , and a plurality of the support walls 30 a are formed at intervals in the belt width direction as in the first embodiment. the opening portion 30f.

[0058] like Figure 9 As shown, one side opening of the support member 30 in the width direction is connected to the duct 46 . The end portion of the duct 46 on the oppos...

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PUM

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Abstract

An object of the present invention is to provide an image forming apparatus. The image forming apparatus includes: a transfer belt; a cleaning device that uses a rotating brush to sweep away toner remaining on the transfer surface of the transfer belt and removes the swept toner by electro-adsorption with a recovery roller; pre-cleaning a brush that is in sliding contact with the transfer surface of the transfer belt on the upstream side of the belt rotation direction than the cleaning device; and a support member that supports the pre-cleaning brush. An opening is formed in the support wall of the support member through which foreign matter including toner, paper dust and the like accumulated on the pre-cleaning brush escapes. According to the present invention, it is possible to suppress accumulation of foreign substances such as toner and paper dust on the pre-cleaning brush.

Description

technical field [0001] The present invention relates to an image forming apparatus. Background technique [0002] Conventionally, in electrophotographic image forming apparatuses, for example, after the primary transfer of the toner image from the photoreceptor to the transfer surface of the intermediate transfer belt, the secondary transfer of the primary transferred toner image is performed. to paper, etc., to form an image. This image forming apparatus generally includes a cleaning device in order to remove toner remaining on the transfer surface after the secondary transfer. [0003] The cleaning device has a rotating brush, a recovery roller and a scraper. The rotating brush removes residual toner from the surface of the intermediate transfer belt. A bias voltage opposite to the polarity of the toner is applied to the recovery roller, and the toner swept by the rotating brush is electrically adsorbed for recovery. The scraper is in contact with the surface of the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G21/00
CPCG03G21/0035G03G15/161G03G2215/1661G03G15/0283G03G21/0011G03G21/12
Inventor 山田雅之
Owner KYOCERA DOCUMENT SOLUTIONS INC