Ink jet recording head having reduced manufacturing steps

Details Ink jet recording head having reduced manufacturing steps Ink jet recording head having reduced manufacturing steps

1990-08-15

1992-10-20

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

B41J 2045

Patent

active

051574209

ABSTRACT:
An inkjet recording head having a head substrate (1); at least a group of pressure chambers (2) arranged so as to be recessed over an entire surface of the head substrate; ink ejecting nozzles (7), each of which is opened so as to face a surface opposite to that of the substrate by extending through a flow path (5) that passes through the head substrate thicknesswise from one end of each of the pressure chambers; and an annular ink preparation chamber (4) communicating with the other end of each of the pressure chambers. The ink preparation chamber that communicates with each of the pressure chambers is arranged so as to be annular, thereby improving the air bubble discharging characteristics and preventing disruption of ink ejection. In addition, the advantage that the ink can be supplied to each of the ink ejecting nozzles uniformly ensures excellent printing quality. Furthermore, the ink chamber is recessed into an opposite surface of the head substrate opposite the pressure chambers.

REFERENCES:
patent: 4216477 (1980-08-01), Matsuda
patent: 4521788 (1985-06-01), Kimura
patent: 4611219 (1986-09-01), Sugitani et al.
patent: 4635079 (1987-01-01), Hubbard
patent: 4680595 (1987-07-01), Cruz-Uribe et al.
patent: 4769654 (1988-09-01), Tanaka

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