61.
    发明专利
    未知

    公开(公告)号:DE69316706D1

    公开(公告)日:1998-03-05

    申请号:DE69316706

    申请日:1993-10-01

    Applicant: CANON KK

    Abstract: An ink supply mechanism which supplies ink from an ink container (19) for storing ink to an ink discharging unit (17) which discharges ink comprises a first filter (70) member provided in an ink outlet section of the ink container; an ink supply passage (52) which conductively connects an ink jet recording unit and the ink container (19) for supplying ink from the ink container reservoir portion to the ink jet recording unit; and a second filter member (63) provided in the ink supply passage between the ink discharging ports and the first filter member (70). The second filter member (63) is provided with holes which create the capillary force greater than the negative pressure in the ink container. With the above structure, it is possible to provide an ink jet recording apparatus capable of making the recovery amount compatible between a usual recording means and a recording means of a high-speed type, making a recording means of a high-speed type usable in a usual recording apparatus, and improving the ink usage efficiency in the recovery process.

    63.
    发明专利
    未知

    公开(公告)号:DE69307645D1

    公开(公告)日:1997-03-06

    申请号:DE69307645

    申请日:1993-10-14

    Applicant: CANON KK

    Abstract: An ink jet recording apparatus includes an orifice (5) for ejecting ink (6); a heater (4) for generating thermal energy to produce a bubble (8) to eject the ink; an ink passage (1) for supplying ink to the orifice (5), the ink passage being provided with the heater (4); an ink container (7) for containing ink to be supplied to the ink passage (1), the ink container retaining the ink, using capillary force; wherein the following is satisfied: VOH > V'Me + Vd where VOH is a volume of the ink passage (1) from the orifice (5) to an edge of the heater adjacent the orifice; V'Me is a volume of a meniscus retraction at an initial ink ejection; and Vd is a volume of ejected ink.

    65.
    发明专利
    未知

    公开(公告)号:DE69025696T2

    公开(公告)日:1996-11-14

    申请号:DE69025696

    申请日:1990-10-18

    Applicant: CANON KK

    Abstract: There is disclosed a driving device for a recording head such as a thermal head (10) or an ink jet head driven in plural blocks, capable of avoiding formation of division lines, or low-density streaks, in the recorded image at the boundaries of the driving blocks of the head (10). In this driving device, the time difference between the start of pulse application to a heat generating element of the recording head (10) and that to an adjacent element is maintained not exceeding the maximum pulse duration to the heat generating element. Also a group of plural heat generating elements positioned at the boundary of two divided blocks is activated simultaneously with each of the two divided blocks.

    66.
    发明专利
    未知

    公开(公告)号:DE69025696D1

    公开(公告)日:1996-04-11

    申请号:DE69025696

    申请日:1990-10-18

    Applicant: CANON KK

    Abstract: There is disclosed a driving device for a recording head such as a thermal head (10) or an ink jet head driven in plural blocks, capable of avoiding formation of division lines, or low-density streaks, in the recorded image at the boundaries of the driving blocks of the head (10). In this driving device, the time difference between the start of pulse application to a heat generating element of the recording head (10) and that to an adjacent element is maintained not exceeding the maximum pulse duration to the heat generating element. Also a group of plural heat generating elements positioned at the boundary of two divided blocks is activated simultaneously with each of the two divided blocks.

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