Droplet forming method for mixed liquid and droplet forming device, and ink jet pringting method and device, and ink jet pringing electrode-carrying nozzle

An ink jet printing method for printing a color image on a printing object by using a plurality of inks, comprising:

• a first step in which a plurality of ink nozzles which house the plurality of inks and a dilution nozzle which houses a dilute solution that can dilute the inks are used, and the ink or the dilute solution is discharged from the ink nozzle or the dilution nozzle by an electrostatic sucking force to form a droplet on the printing object;
• and
• a second step in which the ink or the dilute solution is discharged from the ink nozzle or the dilution nozzle by an electrostatic sucking force, and the inks or the dilute solution are mixed in the droplet to form a droplet in an additive color.

An ink jet printing electrode-attached nozzle which is used in an ink jet printing apparatus including a flat electrode and disposed opposite the flat electrode, comprising an ink nozzle housing only an ink and an electrode provided on the outer circumference of the nozzle.

An ink jet printing electrode-attached nozzle which is used in an ink jet printing apparatus including a flat electrode and disposed opposite the flat electrode, comprising a dilution nozzle that houses only a dilute solution and an electrode that is provided on the outer circumference of the dilution nozzle.

A nozzle which houses a single raw material liquid,

• wherein an electrode is provided on the outer circumference of the front end of the nozzle.