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Image reading unit and overhead image reading device

  • US 8,941,896 B2
  • Filed: 03/30/2011
  • Issued: 01/27/2015
  • Est. Priority Date: 05/18/2010
  • Status: Active Grant
First Claim
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1. An image reading unit comprising:

  • an image reading section including one-dimensionally aligned imaging elements to read an image of a document in a one-dimensional direction;

    a lens for converging light from the document to the image reading section;

    light sources each of which irradiates an image reading region read by the image reading section with light; and

    a rotation head that holds the image reading section, the lens, and the light sources in a manner that the image reading section, the lens, and the light sources are rotatable relative to the document about a rotation axis which is parallel to an alignment direction of the imaging elements, whereinthe light sources are disposed at both sides of the lens in a direction of the rotation axis, andthe image reading section and the light sources are disposed such that an irradiation plane indicating an irradiation range by the light sources overlaps with a scanning plane indicating a range of reading in the image reading by the image reading section.

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