Particle tolerant inkjet printhead architecture

Details Particle tolerant inkjet printhead architecture Particle tolerant inkjet printhead architecture

1995-07-11

1998-03-31

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 93, B41J 205, B41J 2175

Patent

active

057343993

ABSTRACT:
In order to reduce particle clogging of ink firing chambers in an inkjet printer printhead, the barrier layer is configured to have a plurality of inner barrier islands, each associated with a respective one of the heater resistors, disposed between an ink firing chamber and the ink plenum, to form two ink feed channels. The two ink feed channels are designed to have a right angle turn to prevent particles from entering the ink firing chamber. A plurality of outer barrier islands, having a number equal to twice the number of inner barrier islands, are disposed between the inner barrier islands and the ink plenum, and are configured in lines parallel to the lines of heater resistors to prevent particles from reaching the ink feed channels.

REFERENCES:
patent: 4394670 (1983-07-01), Sugitani et al.
patent: 4771295 (1988-09-01), Baker et al.
patent: 4875059 (1989-10-01), Masuda
patent: 4885932 (1989-12-01), Hefferman et al.
patent: 5025271 (1991-06-01), Baker et al.
patent: 5463413 (1995-10-01), Ho
patent: 5519424 (1996-05-01), Scardovi

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