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    21.
    发明专利
    未知

    公开(公告)号：DE69102081T2

    公开(公告)日：1995-01-05

    申请号：DE69102081

    申请日：1991-02-12

    Applicant: CANON KK

    Inventor： TAKAHASHI KAZUYOSHI ,  NUMATA YASUHIRO ,  TERASAWA KOJI ,  FUKAZAWA HIDEO ,  MIYAZAKI HITOSHI ,  AICHI TAKAO

    IPC: B41J2/165

    Abstract: An ink jet recording apparatus comprising, timer means (31) for measuring an elapse time from a predetermined measurement start timing, a backup power source for supplying power to said timer (31) means when a main power source (38) is turned off, and control means (30) for changing a content and/or the number of times of a recover operation for recovering and preventing a discharge error in a discharge port for discharging an ink on the basis of the elapse time.

    Image recording apparatus utilizing serial recording head and image recording method therefor
    22.
    发明专利
    Image recording apparatus utilizing serial recording head and image recording method therefor 未知

    公开(公告)号：AU7280594A

    公开(公告)日：1994-11-24

    申请号：AU7280594

    申请日：1994-09-02

    Applicant: CANON KK

    Inventor： TANAKA SOHEI ,  TAKEDA AKIO ,  NUMATA YASUHIRO

    IPC: B41J11/42 ,  B41J13/00 ,  B41J29/44 ,  B65H7/02

    Abstract: An image recording apparatus, having a recording head (4) and a pair of transport rollers (7, 8) in front of the recording head and another pair of discharge rollers (12, 13) behind the recording head, with a larger transport speed for a recording sheet in the latter pair for applying a suitable tension on the recording sheet. The apparatus has a sensor (23) for detecting the amount of sheet remaining and a control circuit (28) for varying the transport speed and/or the recording area of the recording head after the rear end of the sheet leaves the first pair of rollers. Thus, the eventual error in record position, resulting from sheet advancement by the second pair of rollers only, can be compensated. In this manner, the area of precise image recording on a sheet can be expanded.

    24.
    发明专利
    未知

    公开(公告)号：DE60232833D1

    公开(公告)日：2009-08-20

    申请号：DE60232833

    申请日：2002-01-30

    Applicant: CANON KK

    Inventor： NUMATA YASUHIRO

    IPC: B41J2/01 ,  B41J2/155

    Abstract: A recording apparatus using full-line type ink jet recording heads needs a large amount of electrical power for ink ejection due to a large number of nozzles of the recording heads. Therefore, a power supply capacity of the recording apparatus needs to be increased, resulting in increase in an overall apparatus cost. When simultaneously recording on plural recording media (P1,P2) using a recording apparatus having recording heads (H1,H2,H3,H4,H5) with different electrical power consumptions arranged in a transfer direction of the recording media (P1,P2), recording is performed so that the recording heads to be simultaneously driven are combined so as to be a combination of the recording heads with different electrical power consumptions.

    25.
    发明专利
    未知

    公开(公告)号：DE69333171T2

    公开(公告)日：2004-06-17

    申请号：DE69333171

    申请日：1993-10-29

    Applicant: CANON KK

    Inventor： INUI TOSHIHARU ,  MORIYAMA JIRO ,  KITAZAWA HIROAKI ,  NUMATA YASUHIRO ,  ISHINO TAKAYOSHI ,  EBISAWA ISAO ,  YAEGASHI HISAO

    IPC: B41J2/21

    Abstract: When the color printing is performed using a recording head arranged such that the number of nozzles for discharging the black ink is greater than the nozzles for discharging the inks of other colors, the use frequency of some nozzles among all the nozzles for discharging the black ink is higher, so that image unevenness may arise when transferred to the black printing. The present invention provides an ink jet recording method and an ink jet recording apparatus in which the image unevenness often seen in the black printing involving the use of more nozzles than other colors, and the blur of recorded image seen in the image having black image and color image located adjacent are reduced.

    28.
    发明专利
    未知

    公开(公告)号：AT248065T

    公开(公告)日：2003-09-15

    申请号：AT98204402

    申请日：1993-10-29

    Applicant: CANON KK

    Inventor： INUI TOSHIHARU ,  MORIYAMA JIRO ,  KITAZAWA HIROAKI ,  NUMATA YASUHIRO ,  ISHINO TAKAYOSHI ,  EBISAWA ISAO ,  YAEGASHI HISAO

    IPC: B41J2/21

    Abstract: When the color printing is performed using a recording head arranged such that the number of nozzles for discharging the black ink is greater than the nozzles for discharging the inks of other colors, the use frequency of some nozzles among all the nozzles for discharging the black ink is higher, so that image unevenness may arise when transferred to the black printing. The present invention provides an ink jet recording method and an ink jet recording apparatus in which the image unevenness often seen in the black printing involving the use of more nozzles than other colors, and the blur of recorded image seen in the image having black image and color image located adjacent are reduced.

    29.
    发明专利
    未知

    公开(公告)号：DE69330081T2

    公开(公告)日：2001-08-30

    申请号：DE69330081

    申请日：1993-10-29

    Applicant: CANON KK

    Inventor： INUI ,  MORIYAMA JIRO ,  KITAZAWA HIROAKI ,  NUMATA YASUHIRO ,  ISHINO TAKAYOSHI ,  EBISAWA ISAO ,  YAEGASHI HISAO

    IPC: B41J2/21

    Abstract: When the color printing is performed using a recording head arranged such that the number of nozzles for discharging the black ink is greater than the nozzles for discharging the inks of other colors, the use frequency of some nozzles among all the nozzles for discharging the black ink is higher, so that image unevenness may arise when transferred to the black printing. The present invention provides an ink jet recording method and an ink jet recording apparatus in which the image unevenness often seen in the black printing involving the use of more nozzles than other colors, and the blur of recorded image seen in the image having black image and color image located adjacent are reduced.

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