Patent ID: 8820912

Claim:
A liquid droplet discharging device comprising: a discharge head configured and arranged to undergo relative movement through a predetermined plane with respect to a substrate to discharge liquid droplets curable by activation light; an irradiation section configured and arranged to irradiate the liquid droplets on the substrate with the activation light; a housing configured and arranged to house light source of the activation light, the housing having an opening that opens towards a side opposing the substrate; a cover member that transmits the activation light; and a retaining device whereby the cover member is detachably retained in a first direction parallel to the predetermined plane, the retaining device including a locking member on which the cover member is placed and a fastening member, the locking member having a hole extending a second direction crossing to the first direction, the fastening member being configured and arranged to pass through the hole to the housing such that the locking member is attached to the housing, and a position of the fastening member in the hole being changeable such that the lock member moves in the second direction relative to the housing.