Electroosmotic ink recording apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorTadao Kohashi
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Abstract
A novel ink printing apparatus utilizes electroosmotic force on a face of dielectric substance substrate 10 between a needle shaped recording electrode 20 and a ring shaped auxiliary electrode 30. When a voltage of a suitable polarity is applied between the electrodes 20 and 30, a fluid ink (of solvent ink) 40 laid on the dielectric substrate 10 to range from the electrodes 30 to 20 travels by the electroosmotic force and makes protrusion 41 on the end tip 20' of the recording electrode 20. By applying a high voltage between a counter electrode 60 behind a recording paper 50 and the recording electrode 20, the fluid ink 41 flies to the recording paper.
Claims16
A picture recording apparatus comprising:
- an ink printing head for energizing fluid ink responding to input picture signal, said ink printing head including at least a recording electrode having an end tip to be disposed to face a recording media face with a predetermined gap inbetween, an auxiliary electrode disposed isolated from and surrounding said recording electrode and, a substrate of dielectric substance disposed between said recording electrode and said auxiliary electrode, said substrate forming electroosmotic travelling path for a fluid ink between said recording electrode and said auxiliary electrode, when an electroosmosis voltage is impressed across said recording electrode and said auxiliary electrode, thereby to bring said fluid ink to an energized state that said fluid ink protrudes on said end tip,
- a moving means for moving said recording media face relatively of said ink printing head thereby making ink printing on said recording media by transferring said fluid ink at said energized state.
Dependencies are inferred from the claim text.