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Sensor unit and image forming apparatus having same

A sensor unit and sensor technology, applied in the direction of transportation and packaging, object supply, winding strips, etc., can solve problems such as poor conveying, increased conveying resistance, and inability to detect side edges with high precision, so as to expand the gap and suppress Conveyance resistance becomes too large, and the effect of suppressing poor conveyance

Active Publication Date: 2020-05-12
KYOCERA DOCUMENT SOLUTIONS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, when a thick sheet such as an envelope passes through, the conveyance resistance increases, resulting in poor conveyance.
In addition, when the gap between the upper guide member and the lower guide member is set to about 2 to 3 mm, for example, when a thin sheet such as plain paper is conveyed along the upper surface of the paper conveyance path, the focal point of the edge detection sensor The side edge of the sheet cannot be detected with high precision because it is out of focus with the sheet

Method used

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  • Sensor unit and image forming apparatus having same
  • Sensor unit and image forming apparatus having same
  • Sensor unit and image forming apparatus having same

Examples

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Embodiment Construction

[0036] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0037] figure 1 It is a side cross-sectional view showing a schematic structure of an inkjet recording printer (image forming apparatus) 100 including a sensor unit 30 according to an embodiment of the present invention.

[0038] Such as figure 1 As shown, the printer 100 includes a paper feed cassette 2 a which is a paper storage portion inside and below the printer body 1 , and a manual feed tray 2 b outside the right side of the printer body 1 . On the downstream side in the paper feeding direction of the paper feeding cassette 2a ( figure 1 The paper feeding device 3a is arranged above the right side of the paper feeding cassette 2a in . Also, on the downstream side of the manual feed tray 2b in the paper conveyance direction ( figure 1 The paper feed unit 3b is arranged on the left side of the manual feed tray 2b in the manual. Papers (sheets) P ​​are separate...

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Abstract

The present invention provides a sensor unit and an image forming apparatus having the same. The sensor unit includes a first housing constituting a first conveying face of a sheet conveying passage,a second housing constituting a second conveying face arranged opposite to the first conveying face with a predetermined gap, an edge detection sensor for detecting a side edge along the sheet conveying direction, and a gap adjuster for supporting the first housing movably in a direction in which the size of the gap increases. When, with the first housing arranged at the first position, a sheet with a thickness greater than a reference value passes through the sheet conveying passage, the first housing moves in the direction in which the size of the gap increases as the sheet enters the sheetconveying passage, to allow the passage of the sheet.

Description

technical field [0001] The present invention relates to a sensor unit equipped with an image forming apparatus such as a facsimile, a copier, and a printer, and having a sensor for detecting a sheet edge, and an image forming apparatus including the sensor unit. Background technique [0002] Image forming apparatuses such as facsimile machines, copiers, and printers are configured to record images on sheets such as paper, cloth, and OHP sheets. These image forming apparatuses can be classified into electrophotographic type, inkjet type, etc. according to the recording method. [0003] When printing on a sheet using an image forming apparatus, if the position of the sheet is shifted in a direction perpendicular to the conveyance direction (sheet width direction), the printing position of each sheet also shifts. Therefore, in the case of binding into a book after printing, etc., high accuracy is required for the printing position of each page. [0004] In the past, an image ...

Claims

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Application Information

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IPC IPC(8): B65H26/00B65H5/06
CPCB65H26/00B65H5/062B65H2801/03B65H2553/80B65H7/14B65H2553/416B65H5/36B65H2404/611B65H2404/64B65H7/02B65H2511/13B65H2511/22B65H2220/01
Inventor 丸山启
Owner KYOCERA DOCUMENT SOLUTIONS INC
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