Liquid ejection device

Details Liquid ejection device Liquid ejection device

2008-02-28

2011-10-04

Do, An (Department: 2853)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C347S019000

Reexamination Certificate

active

08029115

ABSTRACT:
A liquid ejection device of a first aspect of the invention includes a sub tank capable of fluid communicating with the main tank removably mountable to the liquid ejection device. The sub tank is configured to satisfy the formula: SH−SL≦MH−MNwhere SHis a liquid amount in the sub tank in a balanced state at which the liquid has flowed into the sub tank by a hydraulic head pressure on mounting the main tank with the liquid fully filled; SLis a liquid amount in the sub tank in a state where the liquid level is positioned at the outlet of the sub tank; MHis a liquid amount in the main tank when the liquid is fully filled in the main tank; and MNis a liquid amount in the main tank in a state where the liquid level is positioned at a threshold level.

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Japan Patent Office, Office Action in Japanese Patent Application No. 2007-050072 (counterpart to the above-captioned U.S. Patent Application) mailed Jan. 27, 2009. (partial translation).

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