Micro ballpoint pen and printing apparatus
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United States of America Patent
Stats
-
Jun 2, 2015
Grant Date -
Apr 4, 2013
app pub date -
Sep 6, 2012
filing date -
Sep 30, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A micro ballpoint pen enabling to print directly straight, oblique, curved, dashed, broken and wavy lines and a printing apparatus including the same. The micro ballpoint pen may include a tip body including a caulking portion, at least one inner protrusion, and at least one expansible or shrinkable elastic portion, a ball provided between the caulking portion and the inner protrusion, the ball contacting and rolling on a target printing object to eject ink onto the target printing object, a supporting bar pressing the ball toward the caulking portion to form an ink outflowing channel between the caulking portion and the ball, and a control part expanding or shrinking the elastic portion to control the ink outflowing channel.
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