Patent ID: 8888253

Claim:
A method of manufacturing an electromechanical transducer layer on a surface of a substrate, comprising: placing the substrate so that the surface of the substrate faces a nozzle plate which is provided with a nozzle for discharging a solution including a source material to form the electromechanical transducer layer; discharging the solution from the nozzle of the nozzle plate to coat the solution on the surface of the substrate while applying voltage such that a potential difference is present between the nozzle plate and the substrate to charge the nozzle plate at a first polarity and the substrate at a second polarity opposite to the first polarity, the solution discharged from the nozzle including a main droplet which is coated on the surface of the substrate and a split droplet split from the main droplet, the the potential difference present between the nozzle plate and the substrate causes the split droplet to become charged at the second polarity and to be attracted and collected by the nozzle plate; and applying a heat treatment to the substrate on which the solution is coated to crystallize the solution to form the electromechanical transducer layer, wherein in the discharging the solution, the solution, before being discharged from the nozzle, is also charged at the first polarity.