Ink jet printing apparatus and method providing an induced, clea

Details Ink jet printing apparatus and method providing an induced, clea Ink jet printing apparatus and method providing an induced, clea

1985-04-12

1986-05-27

Goldberg, E. A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, 346140R, G01D 1518

Patent

active

045918694

ABSTRACT:
To protect critical operative portions (e.g. the orifice plate) of ink jet printing apparatus from airborne debris particles (e.g. paper dust), a wall is provided to substantially enclose a region around those critical operative portions and filtered air is induced to flow through the enclosed region from a location proximate the operative portions to a droplet outlet. In one mode the energy of printing droplet streams induces the air flow. In another embodiment the energy of printing substrate movement induces the air flow.

REFERENCES:
patent: 4122457 (1978-10-01), Erikson et al.

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