Ink jet printing apparatus and method providing an induced...

Details Ink jet printing apparatus and method providing an induced... Ink jet printing apparatus and method providing an induced...

B - Operations, Transporting

41

J

101/96.022

B41J 2/20 (2006.01)

Patent

CA 1257506

- 0 - INK JET PRINTING APPARATUS AND METHOD PROVIDING AN INDUCED, CLEAN-AIR REGION 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.

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