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REMOVAL OF INK DEPOSITS LOCATED NEAR THE NOZZLES OF AN INK JET DEVICE

IP.com Disclosure Number: IPCOM000025304D
Original Publication Date: 1984-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 79K

Publishing Venue

Xerox Disclosure Journal

Abstract

Control of startup and shutdown of ink jet orinting systems, especially the continuous stream type, is seriously hampered by the presence of ink deposits in the vicinity of the orifices. The presence of ink deposits promote various startup and shutdown failures, such as, for example, stream misdirection and mistine: or dribbling which causes contamination of printhead outer and adjacent structure. If the ink deposits dry during prolonged shutdown, orifice clogginq could result.

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XEROX DISCLOSURE JOURNAL

REMOVAL OF INK DEPOSITS LOCATED NEAR THE NOZZLES OF AN INK JET DEVICE Int. (31. Gold 9/00 Donald N. Kords

Proposed Classification
U.S. Cl. 346/18

i"

FIG. I FIG. 2

Control of startup and shutdown of ink jet orinting systems, especially the continuous stream type, is seriously hampered by the presence of ink deposits in the vicinity of the orifices. The presence of ink deposits promote various startup and shutdown failures, such as, for example, stream misdirection and mistine: or dribbling which causes contamination of printhead outer and adjacent structure. If the ink deposits dry during prolonged shutdown, orifice clogginq could result.

In Figure 1, a retainer plate 12 is mounted to the orifice Dlate 14 which has an opening 20 that surrounds the orifices 16. During operation of the ink jet device, a stream of ink is emitting under pressure through the orifices I6 in the direction of arrow 18. To drain away any ink which may tend to deposit on the retainer olate, a

Volume 9 Number 4 July/August 1984 247

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REMOVAL OF INK DEPOSITS LOCATED NEAR THE NOZZLES OF AN INK
JET DEVICE (Cont'dl

groove 22 is formed. A negative pressure is applied to this groove via Dassagewav 24 and conduit 26. Each orifice has its own deposit clearing suction via a passageway and conduit. An alternate design could have a manifold (not shown) connecting all of the separate passageways to a single condui...