EJECTING HEAD, IMAGE FORMING APPARATUS AND IMAGE FORMATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an ejecting head and an image forming apparatus which achieve a preferred printing quality by reducing irregularities generated in printing of a turning position of the head with nozzles arranged in matrix.

SOLUTION: A printing head 50 passes an organic pigment solution dissolved in a water medium as a laminar flow in a passage, and strikes liquid droplets including organic pigment fine particles produced in a process of changing a hydrogen ion exponent of the solution in the laminar flow process. The printing head 50 comprises a nozzle group 522 and a nozzle group 524 with a nozzle array 512 and a nozzle array 514 arranged in a slant direction with an angle θ (0°<θ<90°) formed to a main scanning direction. The nozzle group 522 and the nozzle group 524 are arranged with phases changed in the main scanning direction so that the nozzle arrays included in the respective nozzle groups mutually interpolate projected nozzle arrays projected to align in the main scanning direction.

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