To provide a printing head capable of enhancing the mixing ratio of a fixed quantity medium and an emitting medium and capable of forming a mixed soln. high in concn. for a short time to realize desired max. density.
A printing head has a fixed quantity medium pressure chamber into whcih a fixed quantity medium 45 is introduced, an emitting medium pressure chamber into which an emitting medium 49 is introduced, the fixed quantity medium nozzle 53 connected to the fixed quantity medium pressure chamber and the emitting medium nozzle 54 connected to the emitting medium pressure chamber and arranged so as to be adjacent to the fixed quantity medium nozzle 53 and the fixed quantity medium 45 is allowed to go along the orifice surface of the fixed quantity medium nozzle 53 toward the emitting medium nozzle 54 from the fixed quantity nozzle 53 to be brought into contact with the emitting medium 49 of the emitting medium nozzle 54 to form a mixed soln. and the fixed quantity medium 45 pushed out of the fixed quantity medium nozzle 53 is drawn in the emitting medium nozzle 54 at a time of the emission of the mixed soln. before the mixed soln. is emitted.
YAMADA EMI
ANDO MASATO
