Ink-jet recording apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsNaoya Okazaki, Masayuki Takata
Life of this patent
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Abstract
An ink-jet recording apparatus includes a recording head, an ink channel supplying the recording head with ink and a valve body controlling the supply of ink to the recording head in the ink channel. The ink channel has a valve accommodation room and a valve opening formed in a wall surface located at one end of the valve accommodation room. In an ordinary state the valve body is urged to be in contact with the wall surface and to close the valve opening. In that state, a first area of the valve body, on which a pressure in a direction of opening the valve body from the valve opening acts, is smaller than a second area of the valve body, which is on an opposite side to the first area and on which a pressure within the valve accommodation room acts.
Claims14
An ink-jet recording apparatus comprising:
- a recording head which performs recording on a recording medium by ejecting ink droplets from ink ejection apertures;
- an ink channel which supplies the recording head with ink that is supplied from an ink supply source;
- and
- a valve body which controls the supply of ink to the recording head in the ink channel,
- wherein the ink channel has a valve accommodation room which accommodates the valve body in a movable manner, a valve opening opened and closed by the valve body is formed in a wall surface which is located at one end of the valve accommodation room in a movement direction of the valve body, and the valve opening and the valve accommodation room are connected to the ink supply source and the recording head, respectively;
- in an ordinary state the valve body is urged to be located at a position where it is in contact with the wall surface and to close the valve opening, and defines, with the wall surface, a space which is independent of the valve opening and the valve accommodation room;
- and
- when the valve body is opened by a pressure reduction in the valve accommodation room due to ejection of ink droplets from the recording head, a pressure in the space acts to move the valve body in such a direction as to open the valve opening.
An ink-jet recording apparatus comprising:
- a recording head which performs recording on a recording medium by ejecting ink droplets from ink ejection apertures;
- an ink channel which supplies the recording head with ink that is supplied from an ink supply source;
- and
- a valve body which controls the supply of ink to the recording head in the ink channel,
- wherein the ink channel has a valve accommodation room which accommodates the valve body in a movable manner, a valve opening opened and closed by the valve body is formed in a wall surface which is located at one end of the valve accommodation room in a movement direction of the valve body, and the valve opening and the valve accommodation room are connected to the ink supply source and the recording head, respectively;
- in an ordinary state the valve body is urged to be located at a position where it is in contact with the wall surface and to close the valve opening;
- and
- in a state where the valve body is in contact with the wall surface, a first area of the valve body, on which a pressure in a direction of opening the valve body from the valve opening acts, is smaller than a second area of the valve body, which is on an opposite side to the first area and on which a pressure within the valve accommodation room acts.
Dependencies are inferred from the claim text.