| 摘要 |
A valve includes: a passage having a first passage which communicates an atmosphere-communicating passage and outside of a cartridge body, and a second passage which branches from the first passage; an electrode provided on a wall surface forming the second passage; an electrode provided on a wall surface of a bottom wall lid forming the first passage; a driver IC which applies a predetermined voltage selectively to one of these two kinds of electrodes; an insulating film provided on a surface of the electrode; and an insulating film provided on a surface of the electrode. Accordingly, there is provided a valve which is capable of opening and closing a passage communicating two spaces separated from each other, which has no movable part, and which has a simple construction.
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