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US 4,977,413 AGranted
Ink remain detector having a flexible member and a liquid injection recording apparatus utilizing the detector
AssigneeCanon Kabushiki Kaisha
InventorsAkihiro Yamanaka, Hiroshi Iida, Minoru Nozawa
Life of this patent
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Abstract
A liquid injection recording apparatus having a recording head for injecting ink toward a recording medium to thereby effect recording, an ink tank storing therein ink to be supplied to the recording head, and an ink remain detector provided within a supply path communicating the recording head with the ink tank are presented. The ink remain detector has an ink chamber having at least one wall surface thereof formed of a flexible film member, and at least two detector means responsive to the displacement of the film member.
Claims21
A liquid injection recording apparatus comprising:
- a recording head for injecting ink toward a recording medium to thereby effect recording;
- an ink tank storing therein the ink to be supplied to said recording head;
- supply path means for supplying ink between said ink tank and said recording head;
- and
- an ink remain detector provided in said supply path and including an inflow port into which ink flows, an outflow port from which ink flows out, an ink chamber communicating with said inflow port and said outflow port, a flexible film member which comprises at least a portion of a wall forming said ink chamber, and a plurality of detector means each having an electrically conductive member provided on said film member and an electrode provided correspondingly to said electrically conductive member and being fixed to said detector.
2 more elements
Dependencies are inferred from the claim text.