Patent ID: 8820878

Claim:
A liquid ejecting apparatus, characterized in being provided with: a carriage that has a liquid ejecting head for ejecting a liquid toward a medium, and moves reciprocatingly in a movement direction that intersects with a conveyance direction of the medium; an optical sensor which is provided to the carriage and has a light-emitting unit capable of irradiating light toward the medium and a light-receiving unit for receiving reflected light of the light and outputting an output value corresponding to an amount of light received; a reflecting part that is used to measure a sensitivity of the optical sensor; an openable and closable cover part for covering the reflecting part; and an open/close drive unit for opening/closing the cover part; wherein: the cover part can be opened by the open/close drive unit, the carriage being arranged at a position where the optical sensor is made to face the reflecting part.