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Curl straightening device and image forming apparatus having the same

A correction device and curling technology, applied in printing devices, transportation and packaging, printing, etc., can solve problems such as inability to properly implement sheet correction

Active Publication Date: 2019-10-25
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the correction of the curl of the sheet cannot be properly performed.

Method used

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  • Curl straightening device and image forming apparatus having the same
  • Curl straightening device and image forming apparatus having the same
  • Curl straightening device and image forming apparatus having the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Hereinafter, a curl correction device and an image forming apparatus according to an embodiment of the present invention will be described with reference to the drawings. In addition, in the following, the directional relationship will be described using the directions of front and rear, left and right, and up and down. However, this description is only for the sake of convenience, and is not intended to limit a certain direction. In addition, in the following description, the term "sheet" refers to plain paper, thick paper, postcards, translucent copy paper, or other sheet materials subjected to image forming processing.

[0016] (Overall structure of image forming apparatus)

[0017] figure 1 It is a schematic diagram showing the internal structure of the image forming apparatus 1 according to one embodiment of the present invention. figure 1 The illustrated image forming apparatus 1 is an inkjet recording apparatus that ejects ink to form (record) an image on a she...

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PUM

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Abstract

The invention provides a curl straightening device that corrects curl of a conveyed sheet. The curl straightening device includes supporting rollers, an endless belt, a curl straightening roller, anda contact member. The supporting rollers are disposed rotatably about a shaft extending in a direction orthogonal to a conveying direction of the sheet. The endless belt is stretched across the supporting rollers, and circulates in the conveying direction. The curl straightening roller makes contact with an outer peripheral surface of the endless belt between the supporting rollers so as to form anip portion, and straightens curl of the sheet which passes through the nip portion. The nip portion is shaped so that the endless belt curves along a peripheral surface of the curl straightening roller. The contact member is disposed to oppose a center portion of the curl straightening roller in an axial direction, and makes contact with the curl straightening roller so as to prevent deformationof the curl straightening roller.

Description

technical field [0001] The present invention relates to a curl correcting device for correcting curl of a sheet on which an image is formed, and an image forming apparatus including the same. Background technique [0002] It is known that an image forming apparatus such as a printer is equipped with a curl correcting device for correcting curl of a sheet on which an image is formed. A conventional curl correction device includes an endless conveyor belt stretched over a pair of support rollers, and a curl correction roller (press roller) that is in pressure contact with the outer peripheral surface of the endless conveyor belt. In the curl correcting device, the curl of the sheet is corrected by passing the sheet through a gap portion formed on the endless conveyor belt by pressure contact of the curl correcting roller. [0003] However, the curl correcting rollers that are pressure-contacted to the outer peripheral surface of the endless conveyor belt may sometimes move aw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H29/70B41J2/21
CPCB65H29/70B41J2/21B65H2701/19B41J11/007B41J11/0005B41J13/025B65H2801/27B65H2301/51256B65H2404/262B65H2404/2693B65H2404/1521B65H29/52B41J13/076B41J11/0045
Inventor 宫越直人
Owner KYOCERA DOCUMENT SOLUTIONS INC