Recovery device having a protruding portion providing reduced pressure for improved recovery and method using same
AssigneeCanon Kabushiki Kaisha
InventorsAtsushi Saito, Yutaka Koizumi, Toshihiro Mori, Minoru Nozawa
Life of this patent
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Abstract
A liquid jet recording apparatus includes a cap member for covering discharge ports of a liquid jet recording head which discharge recording liquid. The cap member is provided with a protruding portion opposed to the discharge ports. Gas flow is generated in a space formed by the cap member and the liquid jet recording head. The protruding portion provides for a negative or reduced pressure at the discharge ports, to draw off impurities and improve recovery. An improved recovery method is also provided.
Claims22
A liquid jet recording apparatus including a liquid jet recording head having discharge ports for discharging recording liquid, said recording apparatus comprising:
- a cap member for covering the discharge ports, the cap member being provided with a protruding portion opposed to the discharge ports;
- and
- means for generating a gas flow passed said protruding portion in a space formed by said cap member and the liquid jet recording head to create a reduced pressure for removing impurities from the discharge ports.
A liquid jet recording apparatus having an ink jet recording head provided with discharge ports for discharging recording liquid, said recording apparatus comprising:
- a cap member having an internal face for covering the discharge ports, the internal face having a protruding portion opposed to the discharge ports;
- and
- means for generating a gas flow in a space formed by the internal face of said cap member and the liquid jet recording head;
- wherein the protruding portion creates a reduced pressure in the gas flow for removing impurities from the discharge ports.
A recovery method for a liquid jet recording apparatus including a liquid jet recording head having discharge ports for discharging recording liquid, said recovery method comprising:
- covering the discharge ports by a cap member having a protruding portion opposed to the discharge ports;
- and
- generating a gas flow in a space formed by the recording head and the cap member, through a gap formed by the protruding portion and the recording head to create a reduced pressure for removing impurities from the discharge ports.
Dependencies are inferred from the claim text.