Patent ID: 7810732
Filing Date: 2010-10-12
Classification: G06K,G11B

Abstract:
1. A barcode reading mechanism, comprising: a reading unit including a light emitting portion for irradiating a barcode with irradiation light and a light receiving portion for receiving reflected light of the irradiation light from the barcode; a supporting member for turnably supporting the reading unit so that a position of an optical axis of the irradiation light is moved in a bar length direction of a plurality of bars constituting the barcode; an optical axis moving mechanism for moving the optical axis of the irradiation light in the bar length direction by turning the reading unit; a support base which supports the reading unit so that the reading unit is movable in a direction perpendicular to a surface on which the barcode is placed; and a block moving mechanism which moves the reading unit relative to the support base, wherein the barcode reading mechanism further comprises a tensile coil spring connecting the reading unit to the supporting member, and wherein the optical axis moving mechanism includes a roller provided integrally with the reading unit and a slanting surface which is formed on the support base and along which the roller is moved.