Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2005-06-27
2008-08-05
Vo, Anh T. N. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
C347S085000
Reexamination Certificate
active
07407241
ABSTRACT:
In an ink-jet head device, a main tank, a sub tank and an ink-jet head are mounted in this order in a carriage, with the main tank placed at the top. The main tank, sub tank and ink-jet head are connected to one another by a three-way ink conduit. At a junction of the ink conduit is disposed a three-way switching valve, which selectively switch a path connecting the sub tank to the main tank and a path connecting the sub tank to the ink-jet head, without causing the ink-jet head and the main tank to communicate with each other. As a result, an ink-jet head device and an ink-supplying method are realized, in which the ink-jet head can maintain suitable negative pressure and in which consumption of ink is reduced.
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Higuchi Kaoru
Mutoh Yoshinori
Conlin David G.
Edwards Angell Palmer & & Dodge LLP
Sharp Kabushiki Kaisha
Tucker David A.
Vo Anh T. N.
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