Patent ID: 8464653

Claim:
An application device comprising: a liquid tank for retaining a liquid; and a discharge unit to which the liquid is supplied from the liquid tank, and which discharges the liquid at a set application width to an application-target area provided to an object and extended in a first direction, and a moving unit which moves one of the discharge unit and the object relative to the other in the first direction along each application-target area, wherein the discharge unit comprises: a head cylinder filled with the liquid supplied from the liquid tank; a nozzle plate which is provided at one end of the head cylinder in a replaceable manner and which is provided with plural nozzle holes arranged in a straight line that discharge the liquid; and a rotating mechanism which makes a rotating angle of an arrangement direction of the plural nozzle holes of the nozzle plate changeable relative to the first direction in a plane along an upper surface of the substrate, wherein the application width is set by a width of the plural nozzle holes of the nozzle plate in a second direction that is orthogonal to the first direction, and the rotating angle is set to be an angle such that the application width becomes a value according to a width in the second direction of the application-target area of the object wherein a center line of a discharge direction in which at least one of the plural nozzle holes discharges the liquid is inclined toward a center direction of the width of the application-target area in the second direction relative to a direction orthogonal to a surface of the nozzle plate from which the liquid is discharged, and wherein the plural nozzle holes of the nozzle plate include a first nozzle hole and a second nozzle hole having respective center lines with inclined angles different from each other.