Patent ID: 8393708

Claim:
A recording device comprising: a recording head comprising a discharge port that is configured to discharge a liquid droplet; a head supporting member that is configured to support the recording head; a securing member that is configured to secure the recording head to the head supporting member such that a positional relationship between the head supporting member and the recording head is changeable in a direction intersecting a liquid droplet discharging direction; a light emitter that is configured to emit a light; a light receiver that is configured to receive the light from the light emitter; a position detector that is configured to detect the positional relationship on the basis of an intensity of the light received by the light receiver; and an outputting unit that is configured to output a signal of the positional relationship detected by the position detector, wherein the light emitter and the light receiver are positioned such that the intensity of the light received by the light receiver is changed in accordance with the positional relationship, and wherein the recording head comprises a passage hole configured to allow the light from the light emitter to pass therethrough.