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公开(公告)号：US20230264478A1
公开(公告)日：2023-08-24
申请号：US18142431
申请日：2023-05-02
CPC分类号： B41J2/175 , B41J2/14233 , B41J2/1631
摘要： A liquid ejection head includes a print element substrate including multiple ejection openings, pressure chambers, a common flow path, and pumps, the pumps being configured to circulate liquid between the common flow path and the pressure chamber; and a flow path member laminated to the print element substrate. The flow path member includes a supply flow path and a collection flow path, the supply flow path being configured to supply liquid to the print element substrate, and the collection flow path being configured to collect liquid that is not ejected. The supply flow path and the collection flow path have liquid connection with the same common flow path. A circulating pump generates a flow of liquid flowing in an order of the supply flow path, the common flow path, and the collection flow path, the circulating pump being provided at a position different from the print element substrate.
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公开(公告)号：US11479037B2
公开(公告)日：2022-10-25
申请号：US17025855
申请日：2020-09-18
发明人： Hideo Kanno , Nobuyuki Hirayama , Ryo Kasai
摘要： A printing apparatus comprising a printing element substrate, including a substrate including a heating element for heating and discharging liquid and a temperature detecting element for detecting a temperature of the substrate, wherein a detection period, during which a detecting result is obtainable, extends across a plurality of cycles of a latch signal, and a heating enabling signal for discharging the liquid and the latch signal are output such that, in the detection period, an output value of a temperature waveform does not exceed a preset threshold value, the temperature waveform being a temperature waveform of the substrate detected by the temperature detecting element.
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公开(公告)号：US20210323310A1
公开(公告)日：2021-10-21
申请号：US17362492
申请日：2021-06-29
摘要： A liquid ejection head includes a print element substrate including multiple ejection openings, pressure chambers, a common flow path, and pumps, the pumps being configured to circulate liquid between the common flow path and the pressure chamber; and a flow path member laminated to the print element substrate. The flow path member includes a supply flow path and a collection flow path, the supply flow path being configured to supply liquid to the print element substrate, and the collection flow path being configured to collect liquid that is not ejected. The supply flow path and the collection flow path have liquid connection with the same common flow path. A circulating pump generates a flow of liquid flowing in an order of the supply flow path, the common flow path, and the collection flow path, the circulating pump being provided at a position different from the print element substrate.
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公开(公告)号：US11090937B2
公开(公告)日：2021-08-17
申请号：US16682120
申请日：2019-11-13
摘要： In a liquid ejection head, ejection orifices can be densely arranged while suppressing decrease in liquid flow speed. A channel extending through a pressure chamber extends in a direction crossing an ejection orifice array such that a liquid flows between the two ends of the channel located on the sides of the ejection orifice array.
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公开(公告)号：US11065878B2
公开(公告)日：2021-07-20
申请号：US16710367
申请日：2019-12-11
摘要： A liquid ejection head includes a print element substrate including multiple ejection openings, pressure chambers, a common flow path, and pumps, the pumps being configured to circulate liquid between the common flow path and the pressure chamber; and a flow path member laminated to the print element substrate. The flow path member includes a supply flow path and a collection flow path, the supply flow path being configured to supply liquid to the print element substrate, and the collection flow path being configured to collect liquid that is not ejected. The supply flow path and the collection flow path have liquid connection with the same common flow path. A circulating pump generates a flow of liquid flowing in an order of the supply flow path, the common flow path, and the collection flow path, the circulating pump being provided at a position different from the print element substrate.
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公开(公告)号：US10974504B2
公开(公告)日：2021-04-13
申请号：US16720940
申请日：2019-12-19
摘要： A liquid ejection head can stably eject a liquid from an ejection port by mitigating thickening of the liquid by evaporation from the ejection port. The liquid ejection head has a support substrate; a liquid chamber arranged on the support substrate and provided with an energy generating element for generating energy necessary for ejection of a liquid and an ejection port from which the liquid is ejected; and a circulation flow path of the liquid that passes through the liquid chamber. The liquid ejection head further has a first circulating element that forms a first circulatory flow in the circulation flow path; and a second circulating element that forms a second circulatory flow inside the liquid chamber and a driving frequency of the first circulating element is lower than a driving frequency of the second circulating element.
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公开(公告)号：US20200207101A1
公开(公告)日：2020-07-02
申请号：US16710367
申请日：2019-12-11
摘要： A liquid ejection head includes: a print element substrate including multiple ejection openings, pressure chambers, a common flow path, and pumps, the pump being configured to circulate liquid between the common flow path and the pressure chamber; and a flow path member laminated to the print element substrate. The flow path member includes a supply flow path and a collection flow path, the supply flow path being configured to supply liquid to the print element substrate, the collection flow path being configured to collect liquid that is not ejected. The supply flow path and the collection flow path have liquid connection with the same common flow path. A circulating pump generates a flow of liquid flowing in an order of the supply flow path, the common flow path, and the collection flow path, the circulating pump being provided at a position different from the print element substrate.
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公开(公告)号：US20200009864A1
公开(公告)日：2020-01-09
申请号：US16439002
申请日：2019-06-12
发明人： Masafumi Morisue , Yoshiyuki Nakagawa , Kazuhiro Yamada , Takuro Yamazaki , Ryo Kasai , Tomoko Kudo , Takashi Sugawara
IPC分类号： B41J2/14
摘要： Provided is a liquid ejecting head including an element substrate including: a common liquid chamber connected to a liquid supply source; a pressure chamber connected to the common liquid chamber and including inside an element to generate energy used for ejecting liquid; a bubble generating chamber connected to the common liquid chamber and including inside a pump to cause a flow of the liquid; and a connection flow path connecting the pressure chamber and the bubble generating chamber, in which the liquid ejecting head includes a first anti-cavitation film over the element to generate the energy and a second anti-cavitation film over the pump, and the first anti-cavitation film and the second anti-cavitation film have different film thicknesses.
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公开(公告)号：US20190092009A1
公开(公告)日：2019-03-28
申请号：US16136550
申请日：2018-09-20
发明人： Tomoko Kudo , Ryo Kasai , Masafumi Morisue , Yoshiyuki Nakagawa , Takuro Yamazaki , Takashi Sugawara , Kazuhiro Yamada
摘要： A liquid ejection head including: a substrate; an energy generating element, which is provided on the substrate and is utilized to eject liquid; a first film provided on the energy generating element; a flow path forming member, which has an ejection orifice from which the liquid is ejected and forms a flow path of the liquid between the substrate and the flow path forming member; and an electrode, which generates a flow of the liquid, wherein the electrode includes the first film.
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公开(公告)号：US20170341382A1
公开(公告)日：2017-11-30
申请号：US15602671
申请日：2017-05-23
发明人： Ryo Kasai , Kengo Umeda , Takatsuna Aoki , Makoto Takagi
CPC分类号： B41J2/04563 , B41J2/04528 , B41J2/04541 , B41J2/0458 , B41J2/14072 , B41J2/14088
摘要： A print element substrate and a printing device which can suppress lowering of an image quality are provided. For that purpose, a heater, a sub-heater, and a driver are arranged in each heating area, and a plurality of the heating areas is arrayed on the print element substrate.
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