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公开(公告)号：US20190308413A1
公开(公告)日：2019-10-10
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：US20190232653A1
公开(公告)日：2019-08-01
申请号：US16375746
申请日：2019-04-04
发明人： Takatsugu Moriya , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Hammura , 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：US20190111678A1
公开(公告)日：2019-04-18
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：US10183490B2
公开(公告)日：2019-01-22
申请号：US15691402
申请日：2017-08-30
发明人： Tomohiro Sato , Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Takatsugu Moriya , Koichi Ishida , Tatsuya Yamada , Shuzo Iwanaga , Shingo Okushima
摘要： A discharge port array is inclined to a second direction B at an angle θ that satisfies a relation of tan θ=d2/(N×d1), where d1 is a distance between discharge ports within the discharge port array in the second direction B, and d2 is a distance between two adjacent discharge ports within each group in a first direction.
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公开(公告)号：US09931845B2
公开(公告)日：2018-04-03
申请号：US15388725
申请日：2016-12-22
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：US10421276B2
公开(公告)日：2019-09-24
申请号：US15595541
申请日：2017-05-15
发明人： Akiko Saito , Shintaro Kasai , Yoshiyuki Nakagawa , Takatsugu Moriya , Koichi Ishida , Tatsuya Yamada , Shuzo Iwanaga , Ayako Iwasaki , Tomoki Ishiwata , Tomohiro Sato
摘要： A printing element substrate includes a substrate, an energy generating element, and an ejection-port formed member. The energy generating element is disposed on one surface of the substrate and configured to generate energy for use in ejecting liquid. The ejection-port formed member includes ejection ports that eject the liquid. A protrusion protruding toward inside of each of the ejection ports is provided on an inner surface of the ejection port. In a surface of the ejection-port formed member remote from the substrate, a tip portion of the protrusion is positioned closer to the substrate than an outer periphery of the ejection port.
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公开(公告)号：US10112387B2
公开(公告)日：2018-10-30
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
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：US09969165B2
公开(公告)日：2018-05-15
申请号：US15394619
申请日：2016-12-29
发明人： Shintaro Kasai , Yoshiyuki Nakagawa , Akiko Saito , Takatsugu Moriya , Koichi Ishida , Tatsuya Yamada , Shuzo Iwanaga , Ayako Tozuka , Tomoki Ishiwata , Tomohiro Sato
CPC分类号： B41J2/1433 , B41J2/14016 , B41J2/14024 , B41J2/1404 , B41J2/14145 , B41J2/155 , B41J2/18 , B41J2202/12 , B41J2202/20
摘要： Multiple recording elements are disposed on one face of a recording element board, and a groove-shaped liquid supply channel is provided on the other face in common for the recording elements. Multiple supply ports passing through the recording element board and communicating the liquid supply channel with pressure chambers, and supply-side openings serving as supply ports of liquid to the liquid supply channel are further provided. When discharging liquid, the sum of pressure drop of the liquid from any supply-side opening to the supply port at a position farthest removed from that supply-side opening, and the pressure drop of the liquid at the supply port, is 5000 Pa or less.
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公开(公告)号：US20170341388A1
公开(公告)日：2017-11-30
申请号：US15595541
申请日：2017-05-15
发明人： Akiko Saito , Shintaro Kasai , Yoshiyuki Nakagawa , Takatsugu Moriya , Koichi Ishida , Tatsuya Yamada , Shuzo Iwanaga , Ayako Iwasaki , Tomoki Ishiwata , Tomohiro Sato
IPC分类号： B41J2/14
摘要： A printing element substrate includes a substrate, an energy generating element, and an ejection-port formed member. The energy generating element is disposed on one surface of the substrate and configured to generate energy for use in ejecting liquid. The ejection-port formed member includes ejection ports that eject the liquid. A protrusion protruding toward inside of each of the ejection ports is provided on an inner surface of the ejection port. In a surface of the ejection-port formed member remote from the substrate, a tip portion of the protrusion is positioned closer to the substrate than an outer periphery of the ejection port.
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公开(公告)号：US20170197430A1
公开(公告)日：2017-07-13
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
IPC分类号： B41J2/175
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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