Image reader and image forming apparatus determining direction of document to be read
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United States of America Patent
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Jan 30, 2018
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N/A
app pub date -
Nov 29, 2016
filing date -
Dec 8, 2015
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Abstract
An image forming apparatus includes: a document reading section; a character detection section detecting, based on image data of a document obtained through reading by the document reading section, characters included in an image formed on the document; a character concentration detection section detecting concentration of the characters detected by the character detection section; a character direction detection section detecting a direction of the characters whose concentration detected by the character concentration detection section is in a preset specified concentration range; and a document direction determination section determining, based on the direction of the characters detected by the character direction detection section, a direction of the image formed on the document as a document direction, wherein the character direction detection section, upon determination that the image on the document is a monochromatic image, defines, as the specified concentration range, a concentration range higher than predefined first concentration.
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