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    72.
    发明专利
    未知

    公开(公告)号：DE60304274D1

    公开(公告)日：2006-05-18

    申请号：DE60304274

    申请日：2003-11-26

    Applicant: CANON KK

    Inventor： NAGOSHI SHIGEYASU

    IPC: B41J2/01 ,  B41J3/60 ,  B41J2/205

    Abstract: An ink jet printing apparatus can execute a two-side printing capable of avoiding a show through effect while maintaining a specific print grade. Specifically, for the two-side printing, a small amount of a light cyan ink is used only within the range near white. To compensate this, a dark cyan ink starts to be used near the range. Thus, the amount of ink outputted by converting the same signal values is smaller than that for the one-side printing. As a result, the total amount of landed ink can be reduced to decrease the show through effect in which landed ink pass from one side of a printing medium to another side of the printing medium.

    77.
    发明专利
    未知

    公开(公告)号：DE69232977D1

    公开(公告)日：2003-04-30

    申请号：DE69232977

    申请日：1992-07-29

    Applicant: CANON KK

    Inventor： HIRABAYASHI HIROMITSU ,  TERASAWA KOJI ,  TAKEMURA MAKOTO ,  WATANABE KENJIRO ,  NAGOSHI SHIGEYASU ,  FUKAZAWA HIDEO ,  ARAI ATSUSHI ,  AKIYAMA YUJI ,  SUGIMOTO HITOSHI ,  MATSUBARA MIYUKI

    IPC: B41J2/05 ,  B41J2/195 ,  B41J2/21 ,  B41J29/393 ,  G06K15/10 ,  B41J2/505

    Abstract: An ink jet recording apparatus for performing recording using a recording head for ejecting an ink from a plurality of ejection orifices, includes a print control unit for performing a print operation while switching a print mode between a thin multi-pass print mode for sequentially recording divided recording data in a plurality of number of times of relative scan operations of the recording head with respect to a single recording area, and a 1-pass print mode for recording all recording data in a single relative scan operation of the recording head, and an eject quantity control unit for controlling the eject quantity of the ink ejected from the recording head so that a total ink quantity on the recording area in the thin multi-pass print mode is larger than a total ink quantity in the 1-pass print mode.

    79.
    发明专利
    未知

    公开(公告)号：DE69622354D1

    公开(公告)日：2002-08-22

    申请号：DE69622354

    申请日：1996-12-04

    Applicant: CANON KK

    Inventor： FIJITA MIYUKI ,  NAGOSHI SHIGEYASU ,  INUI TOSHIHARU ,  AKIYAMA YUJI ,  UETSUKI MASAYA ,  KANDA HIDEHIKO ,  YAMADA AKITOSHI

    IPC: B41J2/01 ,  B41J2/07 ,  B41J2/205 ,  B41J2/485 ,  G06K15/10 ,  H04N1/40

    Abstract: This invention relates to an ink jet recording apparatus and a recording method for recording images of high density with the amount of ink placed per unit area on a recording medium being kept constant even if the resolvability when recording is changed. When the amount of ink of an ink droplet discharged from a recording head is constant (25 pl), the average number of recorded dots conforming to the resolvability is found on the basis thereof, and the number of recordable dots is found from this average number of dots. The difference between this number of actually recorded dots and the average number of recorded dots is adjusted by reducing the value of recording data in advance.

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