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Fixing device and image forming device

A technology for image and fixing components, which is applied to the electrical recording process using the charge pattern, equipment and instruments for the electric recording process using the charge pattern, and can solve problems such as exceeding the heat resistance temperature of the coil and achieve the effect of suppressing the temperature difference

Active Publication Date: 2019-01-15
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the temperature of the portion farther from the air inlet may exceed the heat-resistant temperature of the coil faster than the temperature of the portion near the air inlet.

Method used

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  • Fixing device and image forming device
  • Fixing device and image forming device
  • Fixing device and image forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0021] refer to figure 1 , the image forming apparatus 100 according to Embodiment 1 of the present invention will be described. figure 1 is a cross-sectional view showing the image forming apparatus 100 . Image forming apparatus 100 is a color printer. The image forming apparatus 100 includes a feeding unit 1 , a transport unit 2 , an image forming unit 3 , a fixing unit 4 as a fixing device, and a discharge unit 5 .

[0022] The feeding unit 1 stores a plurality of sheets P and sends the sheets to the conveying unit 2 . For example, the sheet P is a sheet made of paper or synthetic resin. The conveying section 2 includes several pairs of conveying rollers, and sends the sheet P to the image forming section 3 . The image forming section 3 forms an image on the sheet P by electrophotography. The transport section 2 sends the image-formed sheet P to the fixing section 4 . The fixing unit 4 heats and presses the image formed on the sheet P to fix the image on the sheet P. ...

Embodiment approach 2

[0065] refer to Figure 1 ~ Figure 3 , Figure 5 and Figure 7 ~ Figure 9 , the image forming apparatus 100 and the fixing unit 4 according to Embodiment 2 of the present invention will be described. The structure of the image forming apparatus 100 according to Embodiment 2 and figure 1 The image forming apparatus 100 according to the first embodiment shown has the same configuration, and the fixing unit 4 according to the second embodiment has the same configuration as figure 2 , image 3 and Figure 5 The structure of the fixing unit 4 according to the first embodiment shown is the same. However, the fixing unit 4 according to the second embodiment is different from the fixing unit 4 according to the first embodiment in that it includes the second guide 110A. Hereinafter, the points in which the second embodiment differs from the first embodiment will be mainly described.

[0066] Figure 7 It is an exploded perspective view showing the arched core 70 , the second g...

Embodiment approach 3

[0078] refer to Figure 10 , the image forming apparatus 100 and the fixing unit 4 according to Embodiment 3 of the present invention will be described. The configurations of the image forming apparatus 100 and the fixing unit 4 according to the third embodiment are the same as those of the image forming apparatus 100 and the fixing unit 4 according to the second embodiment. However, in the third embodiment, the second guide 110B is provided instead of the second guide 110A according to the second embodiment. Hereinafter, the points in which the third embodiment differs from the second embodiment will be mainly described.

[0079] refer to Figure 10 , the second guide 110B will be described. Figure 10 It is a sectional view showing the flow of gas for cooling the coil 52 and the second guide 110B. To simplify the drawings, in Figure 10 omitted in Figure 5 Gas A3 and Gas A4 are shown. The fixing unit 4 includes a second guide 110B instead of the second guide 110A, an...

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PUM

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Abstract

A fixing device (4) includes a fixing member (10) and an induction heating section (40). The fixing member fixes an image onto a sheet (P). The induction heating section inductively heats the fixing member. The induction heating section includes an annular coil (52) and a cover (80). The coil is elongated in a direction (D2) perpendicular to a sheet conveyance direction (D1). The cover has first, second, and third opening rows (91, 92, 93). The coil includes first and second linear sections (52A, 52B). The first and second opening rows are located at a side closer to the first linear section than a center line (C) of the coil in the longitudinal direction (D2). The second opening row is located closer to the second linear section than the first opening row. The third opening row is located at a side closer to the second linear section than the center line.

Description

technical field [0001] The present invention relates to a fixing device and an image forming device. Background technique [0002] Some fixing devices include a fixing roller, an annular coil for inductively heating the fixing roller, a plurality of magnetic cores covering the coil, a support portion for supporting the plurality of magnetic cores, and a guard member covering the support portion. The holder part includes several core accommodation parts, several first opening parts and several second opening parts. In each of the several core accommodation parts, one magnetic core is arranged. One first opening portion and one second opening portion constitute a set, and each set is formed between adjacent core housing portions. [0003] In the protective part, several air inlets and several air outlets are formed. The air inlet is formed at a position opposing the first opening, and the air outlet is formed at a position opposing the second opening. The air introduced fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/20
CPCG03G15/2053G03G15/2017
Inventor 权钟浩
Owner KYOCERA DOCUMENT SOLUTIONS INC
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