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公开(公告)号：US10723127B2
公开(公告)日：2020-07-28
申请号：US16372044
申请日：2019-04-01
发明人： Koichi Ishida , Shuzo Iwanaga , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Hammura , Takatsugu Moriya , Tomohiro Sato , Tatsuya Yamada , Tomoki Ishiwata , Ayako Iwasaki
摘要： A liquid ejection head including first and second recording element substrates adjacent in a direction intersecting a relative movement direction include ejection opening rows that include ejection openings arranged in the intersecting direction. A straight line connecting the ejection openings in end portions on a second recording element substrate side in the first recording element substrate and a straight line connecting the ejection openings in end portions on a first recording element substrate side in the second recording element substrate are inclined towards a middle area side of the first recording element substrate, and arrangement intervals of the ejection openings in an end portion area on the second recording element substrate side of a first ejection opening row is larger than arrangement intervals of the ejection openings in an end portion area on the first recording element substrate side of a second ejection opening row.
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公开(公告)号：US10603910B2
公开(公告)日：2020-03-31
申请号：US16222727
申请日：2018-12-17
发明人： Yoshiyuki Nakagawa , Shintaro Kasai , Akiko Hammura , Shinji Kishikawa , Takayuki Sekine , Shuzo Iwanaga , Takatsugu Moriya , Koichi Ishida , Tatsuya Yamada
摘要： A liquid discharge head includes a recording element configured to generate thermal energy and a discharge orifice disposed at a position facing the recording element. A bubble is generated in liquid by the thermal energy, liquid between the bubble and the discharge orifice is discharged from the discharge orifice by the pressure of the generated bubble, and the bubble communicates with the atmosphere on the outside of the discharge orifice.
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公开(公告)号：US10507654B2
公开(公告)日：2019-12-17
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：US10421287B2
公开(公告)日：2019-09-24
申请号：US15992667
申请日：2018-05-30
发明人： Takuro Yamazaki , Toru Nakakubo , Kazuhiro Yamada , Yoshiyuki Nakagawa , Yoshihiro Hamada , Koichi Ishida , Shingo Okushima
摘要： A plurality of pressure chambers are formed in a circulation channel for liquid in order to array ejection ports in a high density in association with the circulation channel. The circulation channel is connected to a penetration supply path and a penetration recovery path that penetrate a substrate.
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公开(公告)号：US10201972B2
公开(公告)日：2019-02-12
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
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：US10195848B2
公开(公告)日：2019-02-05
申请号：US15396002
申请日：2016-12-30
发明人： Yoshiyuki Nakagawa , Shintaro Kasai , Akiko Saito , Shinji Kishikawa , Takayuki Sekine , Shuzo Iwanaga , Takatsugu Moriya , Koichi Ishida , Tatsuya Yamada
摘要： A liquid discharge head includes a recording element configured to generate thermal energy and a discharge orifice disposed at a position facing the recording element. A bubble is generated in liquid by the thermal energy, liquid between the bubble and the discharge orifice is discharged from the discharge orifice by the pressure of the generated bubble, and the bubble communicates with the atmosphere on the outside of the discharge orifice.
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公开(公告)号：US10144217B2
公开(公告)日：2018-12-04
申请号：US15057668
申请日：2016-03-01
发明人： Arihito Miyakoshi , Ken Tsuchii , Nobuhito Yamaguchi , Hiroshi Arimizu , Yumi Komamiya , Koichi Ishida
摘要： Gas is ejected toward a region between a liquid ejection head and a recording medium so as to enlarge and stabilize a vortex generated by an airflow generated by liquid droplets ejected from ejection ports. Accordingly, an airflow turbulence generated between the liquid ejection head and the recording medium is reduced and displacements of positions at which the liquid droplets are applied due to the airflow turbulence are reduced.
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公开(公告)号：US20180162130A1
公开(公告)日：2018-06-14
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 , 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：US09981470B2
公开(公告)日：2018-05-29
申请号：US15677697
申请日：2017-08-15
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.
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公开(公告)号：US09975347B2
公开(公告)日：2018-05-22
申请号：US15391114
申请日：2016-12-27
发明人： Ayako Tozuka , Shuzo Iwanaga , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Tomohiro Sato , Takatsugu Moriya , Koichi Ishida , Tatsuya Yamada , Tomoki Ishiwata
CPC分类号： B41J2/17566 , B41J2/04508 , B41J2/14024 , B41J2/1404 , B41J2/14072 , B41J2/175 , B41J2/17563 , B41J2/18 , B41J2/2054 , B41J2/2132 , B41J2202/12 , B41J2202/20 , B41J2202/21
摘要： A liquid is reliably supplied to a liquid ejection head through a plurality of supply paths. The liquid is supplied to a plurality of areas of the liquid ejection head through the plurality of supply paths and a liquid ejection amount per unit time from the liquid ejection head is controlled so that a liquid flow amount of each of the areas becomes a predetermined flow amount or less.
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