Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1994-10-03
1997-01-21
Barlow, Jr., John E.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 36, B41J 2165
Patent
active
055963544
ABSTRACT:
An ink priming device for an ink jet printing apparatus is disclosed which includes a housing adapted to fit over the nozzle plate of the print head when the print head is in a non-printing position, the housing having a substantially air tight connection to the nozzle plate. A vacuum generating pump having means defining a variable volume chamber is connected to the housing, and includes an actuator for sequentially decreasing and increasing the volume of the chamber to expel air to ambient atmosphere but not back to the housing and to draw air and ink pockets in the print head into the chamber as a result of the vacuum created when the volume of the chamber is increased, so that the print head is reprimed with ink to maintain proper operation
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Barlow Jr. John E.
Pitney Bowes Inc.
Scolnick Melvin J.
Shapiro Steven J.
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