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Image reading device and image forming apparatus

An image reading device and image reading technology, which are applied in image communication, electrical components, etc., can solve the problems of difficult original size detection and time-consuming

Inactive Publication Date: 2016-10-26
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there arises a problem that if the resolution of the read image data is high, it takes time to determine the pixel row in which pixels with high density values ​​are arranged consecutively.
That is, there is a problem that it is difficult to quickly complete the size detection of the document (detection of the edge of the document).

Method used

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  • Image reading device and image forming apparatus
  • Image reading device and image forming apparatus
  • Image reading device and image forming apparatus

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Embodiment Construction

[0022] Hereinafter, the image reading device and the image forming device of the present invention will be described by taking a digital multi-functional peripheral equipped with a copying function, a printing function, and the like as an example.

[0023]

[0024] Such as figure 1 As shown, the multifunction peripheral 100 of this embodiment includes the image reading unit 1 including the document conveying unit 11 . In addition, the multifunction peripheral 100 corresponds to an "image reading device" and an "image forming device".

[0025] The image reading unit 1 has a frame in which a contact glass 1 a for loading and reading and a contact glass 1 b for conveying and reading are embedded. Further, the image reading unit 1 performs on-load reading for reading an original document placed on the contact glass 1 a or conveyance reading for reading an original document D passing on the contact glass 1 b. In addition, during conveyance and reading, the document conveyance u...

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Abstract

An image reading device generates, as image data of a reading region, image data for output and image data for size detection, the latter having a lower resolution than the former, discriminates high density lines from the size-detection image data, sets as a target line one of the high density lines. And the image reading device calculates as a width for size detection a width from a reference line to the target line, sets as the size of a document a reference size that has a width closest to the width for size detection, performs image processing on the output image data based on the reference size set as the size of the document, and outputs the processed image data.

Description

technical field [0001] The present invention relates to an image reading device and an image forming device. Background technique [0002] When a conventional image reading device reads a document, the user places the document to be read on the document table, and the document cover presses the document placed on the document table. Then, when the image reading device reads a document placed on the document table, it irradiates light on the document table, forms an image of the reflected light reflected by the document and the document cover on the image sensor, and generates image data based on an analog signal output from the image sensor. [0003] The image data (read image data) generated in this way includes the image data of the document and the image data of the document cover. Therefore, in order to extract only the image data of the document from the scanned image data, the size detection of the document (detection of the edge of the document) may be performed base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/00
CPCH04N1/00737H04N1/00708H04N1/0071H04N1/00713H04N1/00716H04N1/00748H04N1/00753H04N1/00766H04N1/00769H04N1/00779H04N1/00816H04N1/00827H04N1/1013H04N2201/0094H04N2201/0422
Inventor 田上裕也原田博之
Owner KYOCERA DOCUMENT SOLUTIONS INC
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