Ink suction pump and ink jet recording apparatus equipped therewith
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 1, 2000
Issued Date -
N/A
app pub date -
Jun 6, 1995
filing date -
Dec 21, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ink jet recording apparatus is equipped with an ink suction pump which performs discharge recovery treatment for maintaining the ink within the discharge port under a predetermined state by sucking ink from the discharge port of a recording head. The ink suction pump has a cylinder and a piston moving in a reciprocal fashion relative to the cylinder therein and performs suction of the ink and discharge of the sucked ink as accompanied with the reciprocal movement. An annular contact portion forming a route for the discharge, which, in the actuation according the suction, blocks the route for discharging the ink, and maintains a predetermined interval by separation in the actuation according the discharge. The annular contact portion is provided at either the end surface of the piston or the end surface of the pushing member which pushes the end surface in the actuation of the suction.
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Cited Art Landscape
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