| 摘要 |
PURPOSE:To improve grade of ink by adsorbing dissolved gas in ink by an adsorption means provided in a nozzle and generating foamed nuclear on the surface of the adsorption means so as to size ink drops, in an ink jet printer wherein the ink in the nozzle is foamed and the ink drops are discharged from an outlet at the tip of the nozzle. CONSTITUTION:In an ink jet printer wherein ink in a nozzle 6 is foamed and ink drops are discharged from an outlet at the tip of the nozzle, dissolved gas in the ink is adsorbed by an adsorption means 8 (for example, a high molecular porous matter) provided in the nozzle 6 and foamed nucleus 5 is generated on the surface of the adsorption means 8. As a result, sizes of the foam and ink drops are controlled, so that images of high print quality can be obtained stably. |
