Ink jet head having oval-shaped orifices

Details Ink jet head having oval-shaped orifices Ink jet head having oval-shaped orifices

2006-03-21

2006-03-21

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S248000, C347S068000

Reexamination Certificate

active

07014297

ABSTRACT:
An ink head includes an ink head module and a nozzle plate. The ink head module has a plurality of ink chambers in which ink is retained. The nozzle plate is attached to the ink head module. The nozzle plate has at least one nozzle to jet ink inside the ink chamber. The surface of the nozzle plate opposing to a recording medium has a first region coming in contact with an opening of the nozzle and a second region other than the first region. Water repellency of the first region is higher than that of the second region.

REFERENCES:
patent: 6084609 (2000-07-01), Manini et al.
patent: 6557974 (2003-05-01), Weber
patent: 06-316083 (1994-11-01), None

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