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公开(公告)号：US10894416B2
公开(公告)日：2021-01-19
申请号：US16589320
申请日：2019-10-01
发明人： Hiroshi Nakai , Noriko Sato , Takahiro Kiuchi , Takashi Sasaki
摘要： An objective of the present invention is to provide an inkjet printing apparatus and an ink filling method capable of restraining a decrease in its availability. For that purpose, in a case where a predetermined negative pressure (determination pressure) is not reached within a predetermined time (determination time) in normal filling operation (first filling operation), it is assumed that a leakage occurs in a cap member, and second filling operation is performed.
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公开(公告)号：US20200316967A1
公开(公告)日：2020-10-08
申请号：US16907356
申请日：2020-06-22
发明人： Tetsuyo Ohashi , Yasuyuki Takanaka , Tetsuya Ishikawa , Seiji Ogasawara , Noriko Sato , Akira Kida , Noboru Shimoyama
摘要： There is provided an inkjet printing apparatus capable of stably outputting high quality images in a configuration of feeding a print medium that is kept horizontal, performing printing by the use of a print head, and conveying the print medium vertically upward. To this purpose, a platen that supports the back side of the print medium in a position facing a printing part of the print head is located to support the print medium at an angle greater than 0° and less than 90° with respect to the horizontal direction, thereby reducing a contact pressure from roller pairs on the printed side immediately after printing.
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公开(公告)号：US20190009522A1
公开(公告)日：2019-01-10
申请号：US16024973
申请日：2018-07-02
发明人： Takuya Fukasawa , Takatoshi Nakano , Atsushi Takahashi , Yoshinori Nakagawa , Hiroshi Nakai , Noriko Sato
CPC分类号： B41J2/04501 , B41J2/16505 , B41J2/16508 , B41J2/16517 , B41J2/16526 , B41J2/16535 , B41J2/16588 , B41J2/18 , B41J2/21 , B41J29/02 , B41J2202/12 , B41J2202/20
摘要： There is provided an inkjet printing apparatus including: a print head having an ejection opening surface on which a first ejection opening array capable of ejecting a first ink and a second ejection opening array capable of ejecting a second ink are arranged; a cap member; and a print controller configured to cause the first and the second ejection opening arrays to perform preliminary ejection to an inside of the cap member, and to cause the first ejection opening array to perform preliminary ejection in a first relative position and cause the second ejection opening array to perform preliminary ejection in a second relative position, wherein, on the cap member, a position in which the second ink lands by the preliminary ejection overlaps with an area where the first ink lands by the preliminary ejection.
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公开(公告)号：US20180311960A1
公开(公告)日：2018-11-01
申请号：US15955813
申请日：2018-04-18
发明人： Hiroshi Nakai , Takahiro Kiuchi , Noriko Sato
IPC分类号： B41J2/165
摘要： An inkjet printing apparatus includes: a print head having an ejection opening surface on which an ejection opening for ejecting ink is provided; a wiping unit configured to wipe the ejection opening surface; a moving unit configured to move the wiping unit in a first direction; and a treatment liquid holding portion having a holding member for holding a treatment liquid and an applying member for applying the treatment liquid to the wiping unit by coming into contact with the wiping unit, wherein a plurality of treatment liquid holding portions are arranged in a second direction crossing the first direction such that adjacent treatment liquid holding portions are not in contact with each other.
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公开(公告)号：US20190291438A1
公开(公告)日：2019-09-26
申请号：US16356291
申请日：2019-03-18
发明人： Takashi Sasaki , Noriko Sato , Takahiro Kiuchi
IPC分类号： B41J2/165
摘要： A liquid ejection apparatus includes a cap member contacting an ejection opening surface of a liquid ejection unit and covering the ejection opening surface, and a drive motor configured to cause the ejection opening surface and the cap member to contact or separate from each other. Furthermore, the liquid ejection apparatus includes a negative pressure generation unit configured to bring a space surrounded by the ejection opening surface and the cap member into a negative pressure state, and a control unit configured to drive the negative pressure generation unit to bring the space into a negative pressure state under a separation instruction to separate the cap member and the liquid ejection unit, and subsequently cause the drive motor to separate the liquid ejection unit and the cap member.
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公开(公告)号：US10406838B2
公开(公告)日：2019-09-10
申请号：US15891807
申请日：2018-02-08
发明人： Tetsuyo Ohashi , Yasuyuki Takanaka , Tetsuya Ishikawa , Seiji Ogasawara , Noriko Sato , Akira Kida , Noboru Shimoyama
IPC分类号： B41J2/165 , B41J25/34 , B41J25/316 , B41J2/175 , B41J2/14 , B41J25/304
摘要： An inkjet printing apparatus includes a print head configured to perform a print operation, the print head having an ejection opening surface on which a plurality of ejection openings for ejecting ink are arrayed along a width direction, and a moving unit configured to move the print head between a printing position, in which the print operation is performed, and a standby position, in which the print operation is not performed. The moving unit moves the print head between the printing position and the standby position by simultaneously performing rotational movement, in which the print head is rotated around a rotation axis that is parallel to the width direction, and linear movement in the gravitational direction, of the print head.
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公开(公告)号：US20180236797A1
公开(公告)日：2018-08-23
申请号：US15891807
申请日：2018-02-08
发明人： Tetsuyo Ohashi , Yasuyuki Takanaka , Tetsuya Ishikawa , Seiji Ogasawara , Noriko Sato , Akira Kida , Noboru Shimoyama
IPC分类号： B41J25/316 , B41J2/14 , B41J2/175
CPC分类号： B41J25/316 , B41J2/1433 , B41J2/16585 , B41J2/175 , B41J25/304
摘要： There is provided an inkjet printing apparatus capable of moving a print head in a short time using a simpler configuration. To this purpose, the print head is moved while simultaneously performing rotational movement and linear movement between a printing position and a maintenance position in the printing apparatus.
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公开(公告)号：US11794479B2
公开(公告)日：2023-10-24
申请号：US17729809
申请日：2022-04-26
发明人： Takahiro Kiuchi , Noriko Sato , Hiroshi Nakai , Takashi Sasaki , Takatoshi Nakano , Atsushi Takahashi , Takuya Fukasawa , Yoshinori Nakagawa
IPC分类号： B41J2/165
CPC分类号： B41J2/16523 , B41J2/16535
摘要： The inkjet printing apparatus includes: a printing unit to eject ink; a wiping unit capable of wiping an ejection opening surface by moving relative to the ejection opening surface with an opening, adapted to be in contact with the ejection opening surface, put in contact with the ejection opening surface; a suction unit connected to the wiping unit and configured to apply negative pressure to the ejection opening surface via the opening; a moving unit to move the wiping unit relative to the ejection opening surface; and a control unit to perform suction wiping operation by wiping the ejection opening surface with the wiping unit while applying negative pressure to the ejection opening surface. The control unit determines the timing to perform the suction wiping operation, and, according to the timing, determines a moving speed of the moving unit and a pressure value caused by the suction unit.
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公开(公告)号：US20220250386A1
公开(公告)日：2022-08-11
申请号：US17729809
申请日：2022-04-26
发明人： Takahiro Kiuchi , Noriko Sato , Hiroshi Nakai , Takashi Sasaki , Takatoshi Nakano , Atsushi Takahashi , Takuya Fukasawa , Yoshinori Nakagawa
IPC分类号： B41J2/165
摘要： The inkjet printing apparatus includes: a printing unit to eject ink; a wiping unit capable of wiping an ejection opening surface by moving relative to the ejection opening surface with an opening, adapted to be in contact with the ejection opening surface, put in contact with the ejection opening surface; a suction unit connected to the wiping unit and configured to apply negative pressure to the ejection opening surface via the opening; a moving unit to move the wiping unit relative to the ejection opening surface; and a control unit to perform suction wiping operation by wiping the ejection opening surface with the wiping unit while applying negative pressure to the ejection opening surface. The control unit determines the timing to perform the suction wiping operation, and, according to the timing, determines a moving speed of the moving unit and a pressure value caused by the suction unit.
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公开(公告)号：US11345154B2
公开(公告)日：2022-05-31
申请号：US16564512
申请日：2019-09-09
发明人： Takahiro Kiuchi , Noriko Sato , Hiroshi Nakai , Takashi Sasaki , Takatoshi Nakano , Atsushi Takahashi , Takuya Fukasawa , Yoshinori Nakagawa
摘要： The inkjet printing apparatus includes: a printing unit to eject ink; a wiping unit capable of wiping an ejection opening surface by moving relative to the ejection opening surface with an opening, adapted to be in contact with the ejection opening surface, put in contact with the ejection opening surface; a suction unit connected to the wiping unit and configured to apply negative pressure to the ejection opening surface via the opening; a moving unit to move the wiping unit relative to the ejection opening surface; and a control unit to perform suction wiping operation by wiping the ejection opening surface with the wiping unit while applying negative pressure to the ejection opening surface. The control unit determines the timing to perform the suction wiping operation, and, according to the timing, determines a moving speed of the moving unit and a pressure value caused by the suction unit.
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