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    Inkjet printing apparatus and inkjet printing method
    12.
    发明授权
    Inkjet printing apparatus and inkjet printing method 有权

    公开(公告)号：US11077687B2

    公开(公告)日：2021-08-03

    申请号：US16823875

    申请日：2020-03-19

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Shingo Nishioka ,  Sae Mogi ,  Satoshi Azuma ,  Kazuhiko Sato ,  Shin Genta ,  Mitsutoshi Nagamura ,  Masataka Kato ,  Yoshinori Nakajima ,  Kazuo Suzuki

    IPC: B41J2/245 ,  B41J2/21 ,  B41J25/00

    Abstract: Images with high image quality having less time-difference unevenness are outputted in an inkjet printing apparatus that performs multi-pass printing using full-line inkjet print heads 2. For this purpose, a CPU is capable of setting a first printing method in which an image for a unit area is printed by a specified number of printing conveyance operations and a second printing method in which an image for a unit area is printed by a smaller number than the specified number of printing conveyance operations. The CPU sets conveyance conditions such that a taken time for one printing conveyance operation of the printing conveyance operations for a unit area in the second printing method is smaller than a taken time for one successive printing conveyance operation of the printing conveyance operations for a unit area in the first printing method.

    INK JET RECORDING APPARATUS
    15.
    发明申请
    INK JET RECORDING APPARATUS 有权
    喷墨记录装置

    公开(公告)号：US20130147868A1

    公开(公告)日：2013-06-13

    申请号：US13712890

    申请日：2012-12-12

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Yuhei Oikawa ,  Kazuo Suzuki ,  Hiroaki Shirakawa ,  Mitsutoshi Nagamura ,  Yosuke Ishii

    IPC: B41J2/045

    CPC classification number: B41J2/0454 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04588 ,  B41J2/0459 ,  B41J2/04591 ,  B41J2/04598

    Abstract: The present invention relates to an ink jet recording apparatus including a recording head including a plurality of energy generation elements configured to generate thermal energy. The ink jet recording apparatus includes a specification unit and a control unit. The specification unit specifies a pulse width upper limit value of a prepulse during a recording operation based on a minimum pulse width by which ink is discharged by applying a drive pulse to the energy generation elements and a temperature of the recording head during the recording operation. The control unit controls the energy generation elements to be driven using a drive pulse of a prepulse with a pulse width equal to or less than the pulse width upper limit value.

    Abstract translation: 喷墨记录装置技术领域本发明涉及一种包括记录头的喷墨记录装置，所述记录头包括被配置为产生热能的多个能量产生元件。 喷墨记录装置包括指定单元和控制单元。 规格单元基于通过在记录操作期间向能量产生元件施加驱动脉冲和记录头的温度而排出墨的最小脉冲宽度来指定记录操作期间的预脉冲的脉冲宽度上限值。 控制单元使用脉冲宽度等于或小于脉冲宽度上限值的预脉冲的驱动脉冲来控制要驱动的能量产生元件。

    INKJET PRINTING APPARATUS AND INKJET PRINTING METHOD
    19.
    发明申请
    INKJET PRINTING APPARATUS AND INKJET PRINTING METHOD 审中-公开

    公开(公告)号：US20200307283A1

    公开(公告)日：2020-10-01

    申请号：US16823875

    申请日：2020-03-19

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Shingo Nishioka ,  Sae Mogi ,  Satoshi Azuma ,  Kazuhiko Sato ,  Shin Genta ,  Mitsutoshi Nagamura ,  Masataka Kato ,  Yoshinori Nakajima ,  Kazuo Suzuki

    IPC: B41J25/00

    Abstract: Images with high image quality having less time-difference unevenness are outputted in an inkjet printing apparatus that performs multi-pass printing using full-line inkjet print heads 2. For this purpose, a CPU is capable of setting a first printing method in which an image for a unit area is printed by a specified number of printing conveyance operations and a second printing method in which an image for a unit area is printed by a smaller number than the specified number of printing conveyance operations. The CPU sets conveyance conditions such that a taken time for one printing conveyance operation of the printing conveyance operations for a unit area in the second printing method is smaller than a taken time for one successive printing conveyance operation of the printing conveyance operations for a unit area in the first printing method.

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