Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2007-10-09
2007-10-09
Do, An H. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
Reexamination Certificate
active
10347523
ABSTRACT:
A liquid injection apparatus having a liquid reservoir for containing liquid, a recording head for injecting the liquid, and a liquid supply passage for supplying the liquid in the liquid reservoir to the recording head is disclosed. A valve unit is located on the liquid supply passage. The valve unit has pressure chamber for temporarily retaining the liquid. As the recording head injects the liquid, the liquid in the pressure chamber decreases. In response to a negative pressure generated by the decrease of the liquid in the pressure chamber, a valve mechanism of the valve unit selectively establishes a supply state where the liquid is supplied from the liquid supply passage to the pressure chamber and a non-supply state where the liquid is not supplied from the liquid supply passage to the pressure chamber. An flow rate adjuster forcibly changes a flow rate of the liquid that flows through the liquid supply passage.
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Aruga Yoshiharu
Kumagai Toshio
Matsumoto Hitoshi
Do An H.
Seiko Epson Corporation
Sughrue Mion Pllc.
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