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Fusing device and image forming apparatus including the same

An unfixed, toner image technology, applied in the fields of fixing devices and image forming devices, can solve the problems of unstable imprinting pressure, difficulty in obtaining fixing performance, etc., and achieve the effect of reducing wrinkles and good fixing

Active Publication Date: 2013-10-30
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the standard mode of the fixing unit, the imprint pressure becomes unstable at the junction of the soft pad and the hard pad
On the other hand, in the envelope mode of the fixing unit, the imprint pressure becomes unstable because a cushion made of soft material is used.
As a result, there is a problem that it is difficult to obtain good fixing performance in either mode

Method used

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  • Fusing device and image forming apparatus including the same
  • Fusing device and image forming apparatus including the same
  • Fusing device and image forming apparatus including the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach 〕

[0021] figure 1 It is a schematic configuration diagram of an image forming apparatus including a fixing device according to an embodiment of the present invention. The image forming apparatus 1 includes: a paper feeding unit 2, which is provided at the lower part of the image forming apparatus 1; a paper conveying unit 3, which is arranged on one side of the paper feeding unit 2; an image forming unit 4, The image forming section 4 is provided above the paper conveyance section 3; the fixing device 5 is provided closer to the discharge side than the image forming section 4; and the image reading section 6 is provided at the image forming section. 4 and above the fixing device 5.

[0022] The paper feeding unit 2 has a plurality of paper feeding cassettes 7 for respectively storing paper 9 which is a recording medium, and a manual feed tray 22 for feeding manual paper. By the rotation of the paper feed roller 8 , the paper 9 is sent out one by one from the paper feed cassett...

no. 2 approach 〕

[0055] Figure 6 , Figure 7 The structure of the switching mechanism 70 of the second embodiment is shown. Figure 6 It is a schematic side view of the switching mechanism 70 in the first mode. Figure 7 It is a schematic side view of the switching mechanism 70 in the second mode. In the second embodiment, the switching mechanism 70 rotates the holding plate 71 to switch from the first mode to the second mode and from the second mode to the first mode. Hereinafter, the description of the same parts as those of the first embodiment will be omitted, and the switching mechanism 70 will be described focusing on the parts different from the first embodiment. In addition, the fixing belt 26 Figure 6 , Figure 7 A pair of holding plates 71 and a pair of side plates 65 are disposed on the front side and the back side of the drawing. but, Figure 6 , Figure 7 In , the side plate 65 on the surface side of the drawing is omitted in order to facilitate the understanding of the ...

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PUM

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Abstract

A fusing device (5) includes a regulating member (60) and a switching mechanism (70). The regulating member (60) has a flat surface (61) and an arc-shaped surface (63) and regulates a nip (N) formed by a belt (26) and a roller (19). The switching mechanism (70) switches the fusing device (5) between a first mode and a second mode in which an unfused toner image is fused to a recording medium (9). The flat surface (61) is provided along a direction in which the recording medium (9) enters the nip (N). The arc-shaped surface (63) is provided downstream of the flat surface (61) in the recording medium entry direction, is contiguous to the flat surface (61), and is curved toward the roller (19). In the first mode, the nip (N) is regulated by the flat surface (61) and the arc-shaped surface (63). In the second mode, the nip (N) is regulated by the flat surface (61) of the flat and arc-shaped surfaces (61, 63).

Description

technical field [0001] The present invention relates to a method of pressing a belt against a roller, inserting a recording medium carrying an unfixed toner image and passing through a fixing nip formed by the belt and roller to heat and press the unfixed toner image. A fixing device for fixing a toner image on a recording medium, and an image forming device including the fixing device. Background technique [0002] Conventionally, an image forming apparatus transfers a toner image formed on an image carrier such as a photosensitive drum to a recording medium. Then, the image forming apparatus conveys the recording medium carrying the toner image to the fixing apparatus. Then, the image forming device fixes the toner image on the recording medium on the recording medium by heating and applying pressure on the fixing device. The fixing device has a belt fixing method. In the belt fixing method, the unfixed toner image is fixed on the recording medium by inserting the recor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20
CPCG03G15/2064G03G15/2085G03G2215/2035G03G15/2028
Inventor 笠间健一
Owner KYOCERA DOCUMENT SOLUTIONS INC