Ink-jet head having nozzle openings with a constant width and ma

Details Ink-jet head having nozzle openings with a constant width and ma Ink-jet head having nozzle openings with a constant width and ma

1996-07-03

1999-11-30

Lee, Eddie C.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 214

Patent

active

059929740

ABSTRACT:
A nozzle plate has a plurality of nozzles for discharging ink which is fed from an ink reservoir through ink supply ports to ink cavities which are pressurized by a pressurizing element. In the nozzle plate, nozzle openings are formed in a silicon monocrystalline substrate with a lattice face (110) by anisotropic etching in such a way that through holes have faces (1-11) and (-11-1) in the direction in which the nozzle openings are arrayed as well as faces (111) and (11-1) in the direction of the axis of the ink cavity. The nozzle openings can be formed so as to have the faces (1-11) and (-11-1) normal to the silicon monocrystalline substrate in the direction in which the nozzle openings are arrayed. The width of the nozzle opening becomes constant irrespective of the time required to etch the substrate.

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