Droplet ejecting apparatus

A droplet ejecting apparatus, comprising:

• a head unit having a generally planar shape and including a plurality of nozzles through which droplets are ejected,
• a holder which holds the head unit,
• a reinforcing plate via which the head unit is held by the holder and which has an adhesion surface as at least a part of one of opposite surfaces thereof to which an adhesion surface of the head unit as at least a part of one of opposite surfaces thereof is adhered with an adhesive layer interposed between the adhesion surface of the reinforcing plate and the adhesion surface of the head unit, and
• an adhesion portion constituted by the adhesion surface of the head unit, the adhesion surface of the reinforcing plate, and the adhesive layer;
• wherein the adhesion portion has a special region in which (a) a plurality of first sections in each of which a part of the adhesion surface of the head unit and a part of the adhesion surface of the reinforcing plate are opposed to each other with a part of the adhesive layer interposed therebetween and are adhered to each other and (b) a plurality of second sections in each of which a part of the adhesion surface of one of the head unit and the reinforcing plate is opposed to a space and is not adhered to the adhesion surface of the other of the head unit and the reinforcing plate are alternately arranged;
• wherein the head unit includes (A) a cavity unit which has a generally planar shape, which has the plurality of nozzles in one of opposite surfaces thereof, and in which a plurality of liquid flow channels corresponding to the plurality of nozzles are formed and (B) an actuator which is attached to a part of the other of opposite surfaces of the cavity unit and which operates for ejecting the droplets through the plurality of nozzles;
• wherein the adhesion surface of the head unit is provided by a different part of the other of opposite surfaces of the cavity unit than said part thereof;
• wherein the actuator is attached to a central portion of the other of opposite surfaces of the cavity unit, and the adhesion surface of the head unit is provided by a peripheral portion of the other of opposite surfaces of the cavity unit;
• wherein the reinforcing plate includes an opening in which the actuator is provided, so as to have a generally frame shape;
• and
• wherein the special region is provided only near the actuator.