Image reading apparatus and operation device

摘要

An operation device includes a cover and a substrate on which a plurality of electrodes which detects a capacitance and which is provided corresponding to each of a plurality of touch switches is mounted. The operation device includes a laminated structure in which at least an elastic sheet that is self-tacking and closely contacts a plurality of electrodes is inserted between the cover and the substrate. At least one through hole is formed at a location on the substrate facing the elastic sheet.

主权项

1. An operation device having a touch switch, the operation device comprising:
a cover having a touch portion of the touch switch, wherein on the cover, a transparent graphic portion is formed at a location of the touch switch; an electronic substrate on which an electrode to detect capacitance for the touch switch is mounted; a light source for a backlight of the touch switch mounted on the electronic substrate together with and corresponding to the electrode; and an elastic sheet disposed between the cover and the electronic substrate, the elastic sheet contacting at least the electrode on the electronic substrate, wherein the cover, the electronic substrate, and the elastic sheet are laminated together, wherein the electronic substrate has at least one through hole at a location facing the elastic sheet in a vicinity of the electrode.