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Image read device and image forming device with the image and device

An image reading device and image reading technology are applied in image communication, electric recording technology using charge patterns, and equipment using electric recording technology using charge patterns, etc., which can solve problems such as inability to read images reliably, and achieve Effects of improving image reading accuracy, reducing the size of the device, and reducing costs

Inactive Publication Date: 2004-05-19
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, another problem arises that the image reaching the rear end of the document cannot be reliably read.

Method used

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  • Image read device and image forming device with the image and device
  • Image read device and image forming device with the image and device
  • Image read device and image forming device with the image and device

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Experimental program
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Embodiment Construction

[0043] An image reading device according to an embodiment of the present invention will be described below with reference to the drawings. Furthermore, an image forming apparatus in which the image reading apparatus of this embodiment is provided in the main body of the apparatus will also be described with reference to the drawings.

[0044] The image forming device forms an image on a sheet. In addition to copiers, image forming apparatuses include facsimile machines, printers, and multifunction machines of these. The image reading device of this embodiment is installed on the device body of a digital copier having a printer function as an example of an image forming device, not just on a copier.

[0045]In this embodiment, the sheet on which an image is formed is referred to as a "document", and the symbol is D. Alternatively, the sheet on which an image is formed is called "recording paper", and the symbol is P. The image reading device can read books in addition to ori...

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PUM

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Abstract

An image reading apparatus is adapted to nip a sheet having an image formed thereon with a main roller and conveying rollers, the conveying rollers being in contact with this main roller, to convey the sheet along the main roller to a reading line opposed to a lowermost point of the main roller, and to read the image with an image sensor for reading an image, and includes reading white background plates which press the sheet against the reading line on both sides of the main roller.

Description

technical field [0001] The present invention relates to an image reading device that reads an image formed on a sheet, and more particularly, relates to an image reading device capable of reading an image reaching the end of a sheet at an image reading position of the sheet, and an image reading device equipped with the image reading device. Take the image forming device of the device. Background technique [0002] Conventionally, in image reading devices, such as Figure 8 As shown, some take a form in which the original is conveyed by the pre-scan roller 132 and the post-scan roller 142 arranged along the conveyance direction of the image-formed sheet (hereinafter referred to as "document") D, and At the image reading position 127a during conveyance, the document image is read by the document reading unit 104 (for example, refer to Japanese Patent Application Laid-Open No. 2000-038234). Further, the image reading apparatus 101 reads the document by pressing the document t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/00B65H5/06G03G15/00H04N1/04H04N1/12H04N1/193
CPCH04N1/00588H04N1/1235H04N1/125H04N1/00591H04N1/0057G03G15/602H04N1/1215H04N1/193H04N1/00602
Inventor 中村文彦
Owner CANON KK