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Image sensor unit and image reading apparatus

  • US 9,131,099 B2
  • Filed: 10/09/2014
  • Issued: 09/08/2015
  • Est. Priority Date: 12/10/2010
  • Status: Active Grant
First Claim
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1. An image sensor unit comprising:

  • a sensor substrate on which a plurality of photoelectric conversion elements are mounted;

    a light source that includes a light-emitting element and is for illuminating a document;

    a light guide that guides light from the light source from one end face thereof and illuminates the document with light output from a light emission surface of the light guide in a light emission direction;

    an image forming element imaging reflected light from the document on the sensor substrate; and

    a frame holding the sensor substrate, the light source, the light guide, and the image forming element,wherein the frame includes a detachably mounted slide member disposed in proximity to the light source,wherein the slide member includes a light shield covering the light source and a portion of the emission surface of the light guide, so that the light shield and the portion of the light emission surface overlap each other in the light emission direction, andwherein the light shield and the light guide are spaced apart so that an air space is provided therebetween.

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