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公开(公告)号：EP4403366A1
公开(公告)日：2024-07-24
申请号：EP24152370.3
申请日：2024-01-17
申请人： Ricoh Company, Ltd.
发明人： YOSHIDA, Takahiro
CPC分类号： B41J2202/1220130101 , B41J2002/1440320130101 , B41J2/14274 , B41J2002/1441920130101 , B41J2202/1120130101 , B41J2/055
摘要： A liquid discharge head (100) includes a nozzle plate (1), a channel substrate (2), a frame (20), and a vibration attenuator (81). The nozzle plate (1) has multiple nozzles (4) from which a liquid is discharged in a liquid discharge direction. The channel substrate (2) has multiple individual liquid chambers (15) communicating with the multiple nozzles (4), respectively. The frame (20) has a first end adjacent to the channel substrate (2), a second end opposite the first end, and a common liquid chamber (10, 40) between the first end and the second end and communicating with the multiple individual liquid chambers (15). The vibration attenuator (81) is disposed between the first end and the second end in the common liquid chamber (10, 40). The vibration attenuator (81) has a through hole (84) through which the liquid flows in the common liquid chamber (10, 40).
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公开(公告)号：EP4368398A1
公开(公告)日：2024-05-15
申请号：EP22837598.6
申请日：2022-06-30
申请人： Kyocera Corporation
发明人： HIRASHIMA, Akinori
摘要： A liquid discharge head (8) includes a discharge unit (26) including a nozzle (163), a pressurizing chamber (162), and a pressurizer (170) and dummy units (26a and 26b) including a dummy pressurizing chamber (162a) and a dummy pressurizer (170a). The liquid discharge head (8) includes a discharge region (24) where a plurality of the discharge units (26) is disposed in a row and a dummy region (25) where one or more dummy units (26a and 26b) are disposed adjacent to the discharge region (24) on an extended line of the row of the discharge units (26). The discharge region (24) includes a central region (26c) located at the center of the row and an end portion region (26d) located adjacent to the dummy region (25) at the end portion of the row. The end portion region (26d) is a region where the discharge unit (26) having a size of a dot larger than the discharge unit (26) in the central region (26c) is located. The dot is discharged by an identical drive signal formed on the recording medium when the dummy unit (26a and 26b) is not driven. In the liquid discharge head (8), a drive signal is supplied to the dummy unit (26a and 26b) while the drive signal is being supplied to the discharge unit (26) in the end portion region (26d).
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公开(公告)号：EP4253056A1
公开(公告)日：2023-10-04
申请号：EP23163622.6
申请日：2023-03-23
摘要： An object is to provide a liquid ejection head (1) and liquid ejection apparatus (101) capable of reducing or preventing a decrease in image quality without increasing the chip size. To achieve this, a configuration is employed in which a bonding layer (19) is not provided between a liquid supply substrate (203) and channel partitions (16) between common supply channels (13a) and common collection channels (13b), and a minute communication portion (20) is provided there.
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公开(公告)号：EP3372407B1
公开(公告)日：2023-10-04
申请号：EP18159358.3
申请日：2018-03-01
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公开(公告)号：EP3286003B1
公开(公告)日：2022-04-27
申请号：EP16783614.7
申请日：2016-04-13
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公开(公告)号：EP3077204B1
公开(公告)日：2021-04-14
申请号：EP14795918.3
申请日：2014-10-26
发明人： TURAN, Mustafa , CHEN, Tzer-Yi
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公开(公告)号：EP3789203A1
公开(公告)日：2021-03-10
申请号：EP20192051.9
申请日：2020-08-21
发明人： XU, Li , KUSUNOKI, Ryutaro
摘要： According to one or more embodiments, a liquid discharge head comprises a substrate, a nozzle plate, and a damper member. The substrate comprises a plurality of pressure chambers. The nozzle plate is provided on a first surface of the substrate and comprises a plurality of nozzles, each of the plurality of nozzles aligned with a corresponding one of the plurality of pressure chambers. The damper member is provided on a second surface of the substrate and comprises a pressure wave absorbing material.
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公开(公告)号：EP3608107A1
公开(公告)日：2020-02-12
申请号：EP19198999.5
申请日：2016-03-24
发明人： HAYASHI, Hideki
摘要： A liquid discharge apparatus includes an individual flow passage member; and a common flow passage member joined to the individual flow passage member in a first direction. The individual flow passage member has nozzle groups formed on a surface on a side opposite to the common flow passage member and connecting hole groups formed on a surface on a side of the common flow passage member; and the common flow passage member has manifold flow passages corresponding to the connecting hole groups respectively. Each of the nozzle groups includes nozzles aligned in a second direction orthogonal to the first direction; and each of the connecting hole groups includes connecting holes aligned in the second direction and connected to the nozzles respectively. Each of the manifold flow passages extends in the second direction and is connected to the nozzles via the connecting holes.
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9.发明公开
公开(公告)号：EP3590718A1
公开(公告)日：2020-01-08
申请号：EP19182771.6
申请日：2019-06-27
发明人： MURAYAMA, Toshiro , FUKUZAWA, Yuma , FUKUDA, Shunya , UCHIDA, Kazuaki , WATANABE, Shunsuke , OKAZAWA, Noriaki
摘要： A liquid ejection head having a nozzle for ejecting a liquid includes a flow path substrate including a flow path of the liquid in the flow path substrate, a nozzle plate which is attached to the flow path substrate and in which the nozzle is formed, a pressure chamber substrate that is attached to a location facing the nozzle plate with the flow path substrate interposed therebetween and that has a pressure chamber, and a pressure generation portion that operates according to an electrical signal from a wiring substrate coupled to an electrode provided on the pressure chamber substrate and that changes a pressure of the pressure chamber to eject the liquid from the nozzle, in which the nozzle plate and the wiring substrate are disposed such that the nozzle plate does not overlap a coupling portion between the wiring substrate and the electrode when viewed in a thickness direction of the flow path substrate.
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公开(公告)号：EP3459742A1
公开(公告)日：2019-03-27
申请号：EP18194635.1
申请日：2018-09-14
发明人： SUGIURA, Keita
摘要： A liquid jetting apparatus includes individual channel rows each formed by individual channels aligned in a first direction and including nozzles respectively, the individual channel rows being arranged in a second direction orthogonal to the first direction, first manifolds each extending in the first direction and connected to the individual channels, the first manifolds being arranged in the second direction, and at least one second manifold extending in the first direction and connected to the individual channels. First connecting ports are formed in end portions, of the first manifolds, on one side in the first direction and open on one side in a third direction orthogonal to both the first direction and the second direction. A second connecting port is formed in an end portion, of the second manifold, on the one side in the first direction and open on the one side in the third direction.
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