Ink jet print head with flexible wall member having low and high

Details Ink jet print head with flexible wall member having low and high Ink jet print head with flexible wall member having low and high

1995-09-26

1998-07-21

Tso, Edward

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 245

Patent

active

057840857

ABSTRACT:
An ink jet print head including a flow path forming member having pressure generating chambers, ink supply paths, and reservoirs, a nozzle plate for covering one side of the flow path forming member, the nozzle plate having nozzle openings communicated with the pressure generating chambers, a flexible wall member for varying the volumes of the pressure generating chambers, the flexible wall member covering the other side of the flow path forming member, and piezoelectric vibrating elements for elastically deforming the flexible wall member, the piezoelectric vibrating element being in contact with the flexible wall member. The flexible wall member includes low elasticity portions and high elasticity portions for transmitting expanding and contracting motions of the piezoelectric vibrating elements to the pressure generating chambers, one end of each high elasticity portion being extended to a region of the ink supply path.

REFERENCES:
patent: 5424769 (1995-06-01), Sakai et al.
patent: 5539982 (1996-07-01), Hosono et al.
patent: 5560090 (1996-10-01), Komakine et al.
patent: 5594475 (1997-01-01), Komakine et al.
patent: 5617127 (1997-04-01), Takeuchi et al.

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