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公开(公告)号：EP4197795A1
公开(公告)日：2023-06-21
申请号：EP22212734.2
申请日：2022-12-12
发明人： KONDO, Soji , NABESHIMA, Naozumi , YOSHII, Kazuya
摘要： A liquid ejection head(1) includes a pressure chamber(12) communicating with an ejection port(13), an ejection element(15) which ejects the liquid from the port(13), and a circulation path for the liquid including the chamber(12). The path includes a supply channel(130) for supplying the liquid to the chamber(12), a collection channel(140) for collecting the liquid from the chamber(12), a circulation pump(500) which supplies the collected liquid to the supply channel(130), and a pressure adjustment unit(150) configured to adjust a pressure on the liquid to be supplied to the supply channel (130). A pressure P21 on the liquid supplied to the chamber(12) while the pump(500) is stopped, a pressure P22 on the liquid supplied to the chamber(12) while the pump(500) is driven, and a pressure loss ΔP from the adjustment unit(150) to the chamber(12) while the pump(500) is driven satisfy P22 > P21 and P22 - ΔP
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公开(公告)号：EP3424728B1
公开(公告)日：2020-09-09
申请号：EP18182127.3
申请日：2018-07-06
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公开(公告)号：EP3354467A1
公开(公告)日：2018-08-01
申请号：EP18153161.7
申请日：2018-01-24
发明人： NABESHIMA, Naozumi
摘要： A common supply channel (4) is connected to one end of a discharge module having a discharge orifice (13) that discharges liquid, and a common recovery channel (5) is connected to the other end of the discharge module. A valve (7) connecting the common supply channel (4) and common recovery channel (5) is provided in an adjustment channel (6), and is opened under a first opening pressure. A pump causes liquid to flow from the common supply channel (4) toward the common recovery channel (5). Flow resistance of the common recovery channel (5) is smaller than flow resistance of the discharge module.
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公开(公告)号：EP4197796A1
公开(公告)日：2023-06-21
申请号：EP22212736.7
申请日：2022-12-12
发明人： OHARA, Manabu , NABESHIMA, Naozumi , KONDO, Soji , YOSHII, Kazuya
摘要： A liquid ejection head (1) includes: an ejection element (15) configured to generate a pressure for ejecting the liquid; a supply channel (130) through which the liquid is supplied to a pressure chamber (12); a collection channel (140) connected to the supply channel through the pressure chamber and through which the liquid is collected from the pressure chamber; a circulation pump (500) capable of supplying the liquid from the supply channel into the pressure chamber, and collecting the liquid in the pressure chamber through the collection channel and sending the liquid to the supply channel; a first pressure adjustment unit (120) disposed between an outlet channel (180) of the circulation pump and the supply channel and configured to adjust a pressure in the supply channel; and a second pressure adjustment unit (150) disposed between an inlet channel (170) of the circulation pump and the collection channel and configured to adjust a pressure in the collection channel.
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5.发明公开
公开(公告)号：EP4049844A1
公开(公告)日：2022-08-31
申请号：EP21217385.0
申请日：2021-12-23
IPC分类号： B41J2/175
摘要： A liquid refill container (2) for refilling a liquid discharge apparatus (1) with liquid includes a liquid storage portion (21), a pouring portion (22), and a cap portion. The liquid storage portion is made of a metal and contains liquid. The pouring portion is removeably connected to the liquid storage portion and has an outlet (22a) for pouring the liquid. The cap portion (23) is removeably attached to the pouring portion and covers the outlet.
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公开(公告)号：EP3421245A1
公开(公告)日：2019-01-02
申请号：EP18180021.0
申请日：2018-06-27
摘要： Element substrate 2 has ejection ports for ejecting liquid, pressure chambers 62 for storing the liquid to be ejected from the ejection ports, liquid supply paths for supplying liquid to the pressure chambers and liquid recovery paths 66 for recovering liquid from the pressure chambers. The filter chambers 23 have respective filters 11 for seizing foreign objects contained in liquid. Liquid is forced to flow from downward to upward relative to the filters 11.
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公开(公告)号：EP4279280A1
公开(公告)日：2023-11-22
申请号：EP23171534.3
申请日：2023-05-04
摘要： A liquid ejection head (1) has: an ejection module (300) including a pressure chamber (12) and an ejection element (15) configured to eject a liquid in the pressure chamber, a supply channel (130), a collection channel (140) connected to the supply channel through a pressure chamber, a first pressure adjustment unit (120), a second pressure adjustment unit (150), and a circulation pump (500). A controlled pressure in the first pressure adjustment unit is set higher than a controlled pressure in the second pressure adjustment unit. A pressure reception area of a second flexible member (230B) and a second pressing plate (210B) in a second pressure control chamber (152) in a case where a second opening (191B) is brought into an open state is smaller than a pressure reception area of a first flexible member (230A) and a first pressing plate (210A) in a first pressure control chamber (122) in a case where a first opening (191A) is brought into an open state.
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公开(公告)号：EP4197797A1
公开(公告)日：2023-06-21
申请号：EP22212740.9
申请日：2022-12-12
发明人： YOSHII, Kazuya , NABESHIMA, Naozumi , KONDO, Soji
摘要： A liquid ejection head (1) includes a pressure chamber (12), an upstream channel (130), a downstream channel (140), a pump (500), an inflow channel (110, 121), and a bypass channel (160). The upstream channel communicates with the pressure chamber to supply the liquid to the pressure chamber. The downstream channel communicates with the pressure chamber. The pump communicates with the upstream channel and the downstream channel to cause the liquid in the downstream channel to flow into the upstream channel. The inflow channel communicates with the upstream channel to cause the liquid to be supplied to the pressure chamber to flow into the upstream channel. The upstream channel and the downstream channel communicate with each other through the bypass channel without the pressure chamber being between the upstream channel and the downstream channel. Part of the liquid flowing from the upstream channel into the bypass channel flows into the pressure chamber through the downstream channel.
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公开(公告)号：EP3421245B1
公开(公告)日：2020-08-05
申请号：EP18180021.0
申请日：2018-06-27
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公开(公告)号：EP3461643A1
公开(公告)日：2019-04-03
申请号：EP18196534.4
申请日：2018-09-25
摘要： A liquid ejection apparatus(1) includes an ejection port ejecting a liquid, a pressure chamber(123) storing the liquid, an element(115) generating energy for ejecting the liquid in the pressure chamber(123), first and second tanks(21, 22) which can store the liquid, a flow passage establishing communication between the first and second tanks(21,22) through the pressure chamber(123), a switching unit(4) switching a flowing direction of the liquid in the flow passage between a first direction from the first tank(21) to the second tank(22) and a second direction being opposite to the first direction, and a pressure compensation unit(37). When a pressure in a downstream side flow passage portion downstream of the pressure chamber(123) has a predetermined pressure or below, the pressure compensation unit(37) compensates for reduction in pressure in the downstream side flow passage portion by supplying the liquid to the downstream side flow passage portion.
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