Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-11-02
2009-10-06
Vo, Anh T. N. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S066000
Reexamination Certificate
active
07597426
ABSTRACT:
An ink-jet head includes: a cavity unit having a nozzle row in which nozzles are arranged in a row, a common ink chamber, and ink channels connecting the common ink chamber with the nozzles, respectively; at least two air discharge ports for air-bubble discharge provided substantially on an extension line of the nozzle row; and a single air discharge-channel connecting the at least two air discharge ports and a portion in the common ink chamber disposed at most downstream of a flow of the ink. The ink channels and the air discharge-channel have substantially the same shape, and an opening area of each of the discharge ports is substantially same as that of the nozzles, thereby making channel resistance in the air discharge-channel lower than that in the ink channels, thereby efficiently removing air bubble stagnated in the common ink chamber at the most downstream portion in the ink flow.
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Brother Kogyo Kabushiki Kaisha
Reed Smith LLP
Vo Anh T. N.
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