Fixing device and image forming device

An image and fixing part technology, applied in the direction of electric recording process applying charge pattern, equipment for applying electric recording process of charge pattern, electric recording technique, etc. and other problems, to achieve the effects of deformation suppression, high fixing processing, and high reliability

Inactive Publication Date: 2011-03-30
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Because of the gap A, in the fixing belt 201 at the part of the gap A, the recording medium discharged from the nip N is maintained in a pasted state, which may cause thermal offset after the fixing belt 201 overheats the recording medium. (hotoffset), in addition, there may be a problem that the separation between the recording medium and the fixing belt 201 is lowered, etc.

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 Construction

[0062] Embodiments of the present invention will be described below with reference to the drawings.

[0063] figure 1 Shown is a schematic configuration diagram illustrating the entire image forming apparatus according to the embodiment of the present invention. In this example, a tandem color printer is displayed as the image forming apparatus.

[0064] figure 1 In the tank accommodating portion 101 provided above the main body 1 of the image forming apparatus, four toner tanks 102Y, 102M, 102C, 102C, 102K.

[0065] Below the tank accommodating portion 101, an intermediate transfer unit 85 is arranged. The four image forming sections 4Y, 4M, 4C, and 4K corresponding to the respective colors (yellow, magenta, cyan, and black) face the intermediate transfer belt 78 provided in the intermediate transfer unit 85 .

[0066] Photoreceptor drums 5Y, 5M, 5C, and 5K are arranged in the image forming units 4Y, 4M, 4C, and 4K, respectively. In addition, around the respective pho...

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PUM

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Abstract

The invention provides a fixing device and an image forming device for stabilizing the mobility of a fixing component and inhibiting the deformation of the fixing component close to outlet of a recording medium, wherein a nip portion is formed between the fixing component and a pressing component. By utilizing the method, the scraping plate (28) is in close sliding contact with two end parts of afixing belt (21) in width direction so as to prevent the fixing belt (21) from moving relative to the width direction, stabilize the movement of the fixing belt (21) and reduce the leakage of a lubricant between the fixing belt (21) and a retaining component (22). Furthermore, according to the rigidity of the fixing belt (21) in width direction, the scraping plate (28) is in sliding contact with an obviously deformed portion in circumferential surface of the fixing belt (21), that is, the portion in sliding contact with the scraping plate (28) can inhibit interspace and deformation in whole width direction, even if in the central field of a recording medium passage in width direction.

Description

technical field [0001] The present invention relates to a fixing device for filming an image formed on a recording medium by heating and pressing the recording medium at a nip between a fixing member and a pressing member, and an image forming device including the fixing device. Background technique [0002] Conventionally, image forming apparatuses using electrophotography are widely known. The image forming process is to form an electrostatic latent image on the surface of the photoreceptor drum of the image carrier, and use a toner as a developer to develop the electrostatic latent image on the photoreceptor drum and make it visible. Then, the developed image is transferred to a recording medium by a transfer device, and a toner image is placed thereon. After that, the unfixed toner image on the recording medium is pressurized / heated by the fixing device, and the toner image on the recording medium is fixed. [0003] In the fixing device, rollers or belts facing each ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20G03G15/00
CPCG03G15/2053G03G2215/2016
Inventor 下川俊彦吉川政昭进士晃石井贤治吉永洋岩谷直毅德田哲生长谷川健一山口嘉纪田卷俊太郎今田高广藤本一平长谷岳诚池渊丰
Owner RICOH KK
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