Applicator device

An applicator device comprising;

• a reservoir tank for trapping embrocation;
• a stage for holding a substrate which is to be applied embrocation;
• a ferrule having a slit-shaped opening section and being installed above the stage;
• a fluid transfer pump for guiding the embrocation within the reservoir tank to the ferrule by carrying out suction operation and discharge operation alternately;
• a first opening and closing valve disposed between a suction opening of the fluid transfer pump and the reservoir tank and becoming in opened condition when suction operation is carried out and becoming in closed condition when discharge operation is carried out;
• a second opening and closing valve disposed between a discharge opening of the fluid transfer pump and the ferrule and becoming in opened condition when discharge operation is carried out and becoming in closed condition when suction operation is carried out;
• and
• driving means for relatively moving the ferrule and/or substrate to one another under a condition where the slit-shaped opening section and the substrate are adjacent to one another,
• wherein the fluid transfer pump comprises a cylinder having the suction opening and the discharge opening, a plunger provided within the cylinder in reciprocable manner along an axial line of the cylinder, a membranous sealing member for sealing gap between the cylinder and the plunger, and plunger driving means for driving the plunger.