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Fixing device, image forming apparatus, pressing device, and urging device

A drive and image technology, applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, and the electric recording technique, etc., can solve the problem of the complexity of the switching mechanism

Active Publication Date: 2016-12-07
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although it has been possible to switch the pressing force between the normal mode and the envelope mode in the prior art, since the pressing force is switched by directly applying the urging force to the second supporting member by using a plurality of urging members, two kinds of pressing forces can be generated and the The mechanism for switching between these two pressing forces is complex

Method used

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  • Fixing device, image forming apparatus, pressing device, and urging device
  • Fixing device, image forming apparatus, pressing device, and urging device
  • Fixing device, image forming apparatus, pressing device, and urging device

Examples

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Embodiment Construction

[0024] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0025] figure 1 is a schematic diagram of a printer serving as an exemplary embodiment of the image forming apparatus of the present invention.

[0026] figure 1 A monochrome printer 10 is shown. An image signal representing an image and generated outside the printer 10 is input to the printer 10 via a signal line (not shown) or the like. The printer 10 includes a controller 11 that controls the operations of components in the printer 10 , and an image signal is input to this controller 11 . The printer 10 forms an image according to an image signal under the control of the controller 11 .

[0027] The printer 10 includes sheet trays 21 at the bottom, and the sheet trays 21 each accommodate a stack of sheets P. As shown in FIG. The sheet tray 21 is configured to be detachable so that sheets P can be supplied. The sheet tray 21 can accommodate OHP sheets, pla...

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PUM

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Abstract

The invention provides a fixing device, an image forming apparatus, a pressing device and an urging device. The fixing device includes a first rotary member; a second rotary member that is in contact with the first rotary member and presses a recording medium passing therethrough; a heating member that heats a contact area; a first support member supporting the first rotary member from inside so as to be in contact with the second rotary member; a second support member supporting the first support member and switchable between states in which it is in contact with and separated from the first support member; a first urging-force applying member attached to the second support member and urging the second and first support members against the second rotary member; a second urging-force applying member disposed between the first and second support members; and a switching member via which the first and second support members are switched between states in which they are in contact with and separated from each other.

Description

technical field [0001] The present invention relates to a fixing device, an image forming apparatus, a pressing device, and an urging device. Background technique [0002] A conventional electrophotographic image forming apparatus has a built-in fixing device that fixes an image on a recording medium such as paper. The fixing device applies pressure to the recording medium to fix the image. A fixing device generally has an urging device. The urging device urges a member in contact with the recording medium against the recording medium or urges another member to generate a pressing force. Meanwhile, there is a need to use an envelope as a recording medium, and thus, in an envelope mode in which an envelope is used as a recording medium, the pressing force applied during fixing needs to be reduced compared to a normal mode in which paper is used as a recording medium. [0003] For example, Japanese Unexamined Patent Application Laid-Open No. 2006-162999 discloses a techniqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20G03G21/16
CPCG03G15/2032G03G15/2064G03G2215/2035
Inventor 泽村淳佐藤秀树赤塚将拓加藤裕弘鹈川贵之渡边茂
Owner FUJIFILM BUSINESS INNOVATION CORP