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公开(公告)号：US10828906B2
公开(公告)日：2020-11-10
申请号：US16410375
申请日：2019-05-13
发明人： Yoshiyuki Nakagawa , Shintaro Kasai , Shuzo Iwanaga , Akiko Hammura , Koichi Ishida , Takatsugu Moriya
摘要： A liquid discharge head includes: a substrate, where a recording element is disposed; and a discharge orifice forming member, where a discharge orifice, facing the recording element, and configured to discharge the liquid, is formed. The liquid discharge head has a pressure chamber, a first liquid channel configured to supply liquid to the pressure chamber, and a second liquid channel configured to recover liquid from the pressure chamber. The substrate has a liquid supply channel connected to the first liquid channel to supply liquid to the first liquid channel, and a liquid recovery channel connected to the second liquid channel, to recover liquid from the second liquid channel. Pressure at an inlet portion of the liquid supply channel is higher than pressure at an outlet portion of the liquid recovery channel, and a flow velocity of liquid within the pressure chamber is 3 to 140 mm/s.
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公开(公告)号：US10730291B2
公开(公告)日：2020-08-04
申请号：US16371962
申请日：2019-04-01
发明人： Masakazu Kobayashi , Koichi Ishida , Shuzo Iwanaga
摘要： A liquid ejection head including recording element substrates each including ejection opening rows in which ejection openings ejecting liquid are arranged, the plurality of ejection opening rows being juxtaposed in a relative movement direction with respect to the printed medium. In the relative movement direction of the printed medium when the printed medium is viewed from the liquid ejection head, and in the plurality of ejection opening rows provided in the recording element substrate, among the plurality of recording element substrates, positioned on an upstream side in the relative movement direction, arrangement intervals of ejection openings in an end area of an ejection opening row positioned on a most upstream side in the relative movement direction are smaller than arrangement intervals of ejection openings in an end area of an ejection opening row positioned on a most downstream side in the relative movement direction.
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公开(公告)号：US10293607B2
公开(公告)日：2019-05-21
申请号：US15397517
申请日：2017-01-03
发明人： Takatsugu Moriya , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Koichi Ishida , Tatsuya Yamada , Shinji Kishikawa , Takayuki Sekine , Shuzo Iwanaga
摘要： A recording element board includes a discharge orifice configured to discharge liquid, a pressure chamber communicating with the discharge orifice, a recording element configured to generate thermal energy to cause bubbling of the liquid, the recording element being disposed in the pressure chamber facing the discharge orifice, and a substrate on which the recording element is formed. When the recording element is driven and the liquid of within the pressure chamber is discharged, a generated bubble communicates with the atmosphere. A discharge orifice projection region where the discharge orifice has been projected on the substrate includes a region includes a region extending beyond a heat-generating region projection region where the heat-generating region of the recording element has been projected on the substrate, the outline of the discharge orifice projection region is circumscribed by the outline of the heat-generating region projection region.
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公开(公告)号：US10040288B2
公开(公告)日：2018-08-07
申请号：US15889533
申请日：2018-02-06
发明人： Takatsugu Moriya , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Koichi Ishida , Tatsuya Yamada , Shuzo Iwanaga , Ayako Tozuka , Tomoki Ishiwata , Tomohiro Sato
CPC分类号： B41J2/155 , B41J2/14024 , B41J2/1404 , B41J2/14072 , B41J2/14145 , B41J2/18 , B41J2002/012 , B41J2202/12 , B41J2202/20
摘要： A liquid ejection module and a liquid ejection head capable of suppressing unevenness in printing are provided. Accordingly, openings are disposed so that a center position of at least one of openings in a plurality of ejection opening rows is not disposed on the same line extending in a print medium movement direction in a relative movement with respect to center positions of the other openings.
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公开(公告)号：US20180022087A1
公开(公告)日：2018-01-25
申请号：US15655231
申请日：2017-07-20
发明人： Takatsugu Moriya , Shuzo Iwanaga , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Tatsuya Yamada , Tomohiro Sato , Ayako Iwasaki , Tomoki Ishiwata , Koichi Ishida
CPC分类号： B41J2/0458 , B41J2/0456 , B41J2/04595 , B41J2/14024 , B41J2/1404 , B41J2/14048 , B41J2/14056 , B41J2/14072 , B41J2002/033 , B41J2002/14169 , B41J2002/14217 , B41J2002/14467 , B41J2002/14475 , B41J2202/12 , B41J2202/19 , B41J2202/20 , B41J2202/21
摘要： A liquid discharging head includes a discharge port that discharges a liquid, a pressure chamber that communicates with the discharge port, and an energy generating element that is disposed in the pressure chamber. In the liquid discharging head, the discharge port is provided with a plurality of projections that project towards a central portion of the discharge port from an inner peripheral edge of the discharge port, and an interval between the projections at a location where the projections are closest to each other is 5 μm or less.
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公开(公告)号：US20170341393A1
公开(公告)日：2017-11-30
申请号：US15602812
申请日：2017-05-23
发明人： Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Takatsugu Moriya , Koichi Ishida , Tatsuya Yamada , Shuzo Iwanaga , Tomohiro Sato , Tomoki Ishiwata
IPC分类号： B41J2/14
摘要： A print element substrate and a liquid ejection head capable of suppressing degradation of a print quality caused by a white stripe/black stripe etc., is actualized without using a high degree of microfabrication technology. As a result of asymmetric deformation by swelling in a direction of relative movement to a print medium, print elements having different liquid droplet ejection directions are made to coexist and arrayed for that purpose.
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公开(公告)号：US20170334203A1
公开(公告)日：2017-11-23
申请号：US15598212
申请日：2017-05-17
发明人： Akiko Saito , Shintaro Kasai , Yoshiyuki Nakagawa , Takatsugu Moriya , Koichi Ishida , Shinji Kishikawa , Takayuki Sekine , Shuzo Iwanaga , Tatsuya Yamada
IPC分类号： B41J2/14
CPC分类号： B41J2/1433 , B41J2/1404 , B41J2002/14467 , B41J2202/12
摘要： A recording element substrate includes: a substrate on which a plurality of energy generating elements that generate energy used for ejecting liquid are arranged side by side, an ejection port forming member in which ejection ports are formed at positions corresponding to the plurality of energy generating elements, a plurality of supply passages which are channels extending in a thickness direction of the substrate and through which liquid is supplied to the energy generating elements, and a support member that is formed between the substrate and the ejection port forming member and supports the ejection port forming member, in which supply ports that are apertures of the plurality of supply passages are linearly arranged side by side on the substrate, and a plurality of support members are provided side by side between adjacent supply ports on the substrate in a direction in which the supply ports are aligned.
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公开(公告)号：US20170197411A1
公开(公告)日：2017-07-13
申请号：US15397517
申请日：2017-01-03
发明人： Takatsugu Moriya , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Koichi Ishida , Tatsuya Yamada , Shinji Kishikawa , Takayuki Sekine , Shuzo Iwanaga
IPC分类号： B41J2/14
CPC分类号： B41J2/14024 , B41J2/1404 , B41J2/1433 , B41J2002/012 , B41J2002/14169 , B41J2002/14467 , B41J2002/14475 , B41J2202/11 , B41J2202/12
摘要： A recording element board includes a discharge orifice configured to discharge liquid, a pressure chamber communicating with the discharge orifice, a recording element configured to generate thermal energy to cause bubbling of the liquid, the recording element being disposed in the pressure chamber facing the discharge orifice, and a substrate on which the recording element is formed. When the recording element is driven and the liquid of within the pressure chamber is discharged, a generated bubble communicates with the atmosphere. A discharge orifice projection region where the discharge orifice has been projected on the substrate includes a region includes a region extending beyond a heat-generating region projection region where the heat-generating region of the recording element has been projected on the substrate, the outline of the discharge orifice projection region is circumscribed by the outline of the heat-generating region projection region.
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公开(公告)号：US20160375685A1
公开(公告)日：2016-12-29
申请号：US15188571
申请日：2016-06-21
发明人： Koichi Ishida , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Takatsugu Moriya , Tatsuya Yamada , Shuzo Iwanaga
IPC分类号： B41J2/14
CPC分类号： B41J2/14016 , B41J2/1404 , B41J2/14072 , B41J2/14129 , B41J2/14145 , B41J2002/14306 , B41J2002/14467 , B41J2202/12
摘要： A liquid ejection head substrate includes a heating resistor array including a plurality of heating resistors and a protective film covering at least one of the heating resistors. The liquid ejection head substrate further includes a supply opening array and an electrode. The supply opening array is disposed on a side of a surface of the liquid ejection head substrate on which the protective film is provided. The supply opening array includes a plurality of supply openings through which a liquid is supplied arranged in a direction along the heating resistor array. The electrode is disposed on the side of the surface in a space between the supply openings adjacent to each other in a direction along the supply opening array. The electrode is configured such that a voltage is applied between the electrode and the protective film.
摘要翻译： 液体喷射头基板包括包括多个加热电阻器的加热电阻器阵列和覆盖至少一个加热电阻器的保护膜。 液体喷射头基板还包括供给开口阵列和电极。 供给口阵列设置在其上设置有保护膜的液体喷射头基板的表面的一侧。 供应开口阵列包括多个供应开口，通过该供应开口沿着沿着加热电阻器阵列的方向布置液体。 电极在沿着供给开口阵列的方向彼此相邻的供给开口之间的空间中设置在表面的一侧。 电极被配置为使得在电极和保护膜之间施加电压。
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公开(公告)号：US09457593B2
公开(公告)日：2016-10-04
申请号：US15056919
申请日：2016-02-29
发明人： Koichi Ishida , Ken Tsuchii , Nobuhito Yamaguchi , Hiroshi Arimizu , Yumi Komamiya , Arihito Miyakoshi
IPC分类号： B41J11/00
CPC分类号： B41J11/0015 , B41J2/14016 , B41J2/14201 , B41J2202/02
摘要： A liquid ejecting head ejects liquid from a plurality of ejection orifices thereof for recording while being moved relative to a recording medium. The liquid ejecting head includes a gas discharge port configured to allow gas to be discharged therefrom. The gas discharge port is disposed on a downstream side of the ejection orifices in a direction of relative movement of the recording medium as viewed from the liquid ejecting head. The gas discharged from the gas discharge port joins an airflow that forms a vortex on an upstream side of the ejection orifices in the direction of relative movement. The vortex is generated by the liquid ejected from the ejection orifices.
摘要翻译： 液体喷射头从多个喷射口喷射液体，以相对于记录介质移动而进行记录。 液体喷射头包括被配置为允许气体从其排出的气体排出口。 气体排出口设置在从液体喷射头观察的记录介质的相对运动方向上的喷射孔的下游侧。 从气体排出口排出的气体在相对运动方向上的喷射口的上游侧连结形成涡流的气流。 涡流由从喷射口喷出的液体产生。
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