Electric field driven ink jet printer having a resilient plate d

Details Electric field driven ink jet printer having a resilient plate d Electric field driven ink jet printer having a resilient plate d

1995-09-15

1998-04-14

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 54, 347 55, B41J 214, B41J 216, B41J 206

Patent

active

057398313

ABSTRACT:
An ink jet print head of the electric-field drive type includes: a nozzle plate including a ink spouting hole; a resilient plate deformable when it receives an electrostatic attraction force; a pressure generating chamber structure formed between the nozzle plate and the resilient plate; a first electrode formed on the resilient plate, the first electrode being located corresponding to the pressure generating chamber structure; a second electrode spaced apart from the first electrode a distance corresponding to a predetermined gap, the second electrode being undeformable when receiving the electrostatic attraction force; a photo conductive layer, one surface of the photo conductive layer being electrically connected to the second electrodes; and a substrate made of transparent material, the substrate including a transparent electrode which is electrically connected to the other surface of the photo conductive layer, wherein the electrostatic attraction force generated between the first and second electrodes causes the pressure generating chamber structure to be expanded, and removal of the electrostatic attraction force allows the pressure generating chamber structure to be compressed, to thereby cause the pressure generating chamber structure to shoot forth ink droplets through the ink spouting hole of the nozzle plate.

REFERENCES:
patent: 4312009 (1982-01-01), Lange

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