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Image reading apparatus and operation device

  • US 8,625,169 B2
  • Filed: 03/29/2011
  • Issued: 01/07/2014
  • Est. Priority Date: 03/31/2010
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a reading unit configured to read an image of a document set on a reading surface;

    a pressing plate capable of opening relative to the reading surface; and

    an operation device provided on an upper surface of the pressing plate,wherein the operation device includes;

    a cover;

    a plurality of touch switches provided at different locations of the cover, each touch switch including an electrode configured to detect a capacitance, wherein on the cover, a transparent graphic portion is formed at a location of each of the plurality of touch switches; and

    a substrate on which a plurality of the electrodes and a plurality of light sources of backlights are mounted,wherein the operation device has a laminated structure in which the cover, a first elastic sheet having translucency, a light guide element group provided corresponding to the plurality of touch switches, a second elastic sheet, and the substrate are laminated together, andwherein at least the second elastic sheet is not divided and is common to the plurality of electrodes.

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