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公开(公告)号：US20240278562A1
公开(公告)日：2024-08-22
申请号：US18444348
申请日：2024-02-16
发明人： Yu SHIOZAWA , Motoki TAKABE
CPC分类号： B41J2/14233 , B41J2/04581 , B41J2002/14306
摘要： A liquid ejecting head includes: a nozzle substrate including a first nozzle; a vibration plate; a pressure chamber substrate including a first pressure chamber in which pressure for ejecting liquid through the first nozzle is applied to liquid by the vibration plate and a first absorption chamber in which vibration of liquid propagated from the first pressure chamber is absorbed by the vibration plate; and a sealing substrate including a first-pressure-chamber recess associated with the first pressure chamber and a first-absorption-chamber recess associated with the first absorption chamber, and when a first direction is defined as a direction in which the first pressure chamber and the first absorption chamber are aligned, width of the first-absorption-chamber recess in the first direction is smaller than width of the first absorption chamber in the first direction.
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公开(公告)号：US20240181776A1
公开(公告)日：2024-06-06
申请号：US18502180
申请日：2023-11-06
发明人： Yu SHIOZAWA , Motoki TAKABE , Hitoshi TAKAAI
IPC分类号： B41J2/14
CPC分类号： B41J2/14201 , B41J2/14072
摘要： A liquid ejecting head includes: a nozzle; a piezoelectric material; an upper electrode located over the piezoelectric material and electrically coupled to the piezoelectric material; a lower electrode located under the piezoelectric material and electrically coupled to the piezoelectric material; upper-electrode wiring located over the upper electrode and configured to electrically couple the upper electrode to an external power supply; lower-electrode wiring configured to electrically couple the lower electrode to the external power supply; a vibration plate located under the lower electrode and configured to vibrate when the piezoelectric material is driven; and a pressure chamber substrate having a pressure chamber in which vibration of the vibration plate applies pressure to liquid to eject liquid through the nozzle and a first absorption chamber configured to absorb vibration of liquid propagated from the pressure chamber, and the upper electrode and the upper-electrode wiring are present over the first absorption chamber.
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公开(公告)号：US20230166506A1
公开(公告)日：2023-06-01
申请号：US18059878
申请日：2022-11-29
发明人： Yu SHIOZAWA , Masaki MORI , Motoki TAKABE , Hitoshi TAKAAI , Eiju HIRAI
CPC分类号： B41J2/14233 , B41J2/04581 , B41J2002/14362 , B41J2002/14459 , B41J2002/14491
摘要： A liquid discharge head includes an individual electrode that is individually provided for the plurality of pressure chambers, a common electrode that is commonly provided for the plurality of pressure chambers, a piezoelectric body that is provided between the individual electrode and the common electrode for applying pressure to liquid in the pressure chambers, a drive wiring that is electrically coupled to the individual electrode and the common electrode, and applies a voltage for driving the piezoelectric body, a detection resistor that is formed of the same material as any of the individual electrode, the common electrode, and the drive wiring for detecting temperature of the liquid in the pressure chambers, and a first layer that is provided on a surface opposite to a surface facing the pressure chamber substrate in the detection resistor, and has a lower thermal conductivity than the detection resistor.
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公开(公告)号：US20230166498A1
公开(公告)日：2023-06-01
申请号：US18059885
申请日：2022-11-29
发明人： Masaki MORI , Yu SHIOZAWA , Hitoshi TAKAAI , Motoki TAKABE , Eiju HIRAI
IPC分类号： B41J2/045
CPC分类号： B41J2/04563 , B41J2/04581
摘要： A liquid discharge head includes a pressure chamber substrate that is provided with a plurality of pressure chambers, a piezoelectric body that is driven to apply pressure to liquid in the pressure chambers, an upper electrode that is provided above the piezoelectric body for applying a voltage to the piezoelectric body, a lower electrode that is provided below the piezoelectric body for applying a voltage to the piezoelectric body, a detection resistor that is provided below the piezoelectric body for detecting temperature of the liquid in the pressure chambers, and a first wiring portion that is electrically coupled to the detection resistor. The first wiring portion includes a first part that is extended above the piezoelectric body, and a second part that is provided in at least a part of a through hole penetrating the piezoelectric body and electrically coupled to the detection resistor.
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公开(公告)号：US20240042759A1
公开(公告)日：2024-02-08
申请号：US18363956
申请日：2023-08-02
发明人： Motoki TAKABE , Yu SHIOZAWA
IPC分类号： B41J2/14
CPC分类号： B41J2/14233 , B41J2002/14306
摘要： A liquid ejecting head wherein a first common flow passage that is in shared communication with the plurality of individual flow passages and supplies a liquid to the plurality of individual flow passages, a second common flow passage that is in shared communication with the plurality of individual flow passages and collects a liquid from the plurality of individual flow passages, and a first bypass flow passage that connects the first common flow passage and the second common flow passage are formed in the first substrate, and the first substrate is comprised of a pressure compartment substrate in which the plurality of pressure compartments is formed and a communication plate that is provided between the pressure compartment substrate and the second substrate.
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公开(公告)号：US20230278335A1
公开(公告)日：2023-09-07
申请号：US18176968
申请日：2023-03-01
发明人： Yu SHIOZAWA , Eiju HIRAI
CPC分类号： B41J2/0456 , B41J2/14233 , B41J2/04581
摘要： A liquid ejecting apparatus includes: a channel substrate having one or more pressure chambers, an absorbing chamber that absorbs vibration of a liquid; a vibration plate that is stacked on the channel substrate; a first piezoelectric element that is provided on a first surface of the vibration plate, which is on a side opposite to a side on which the pressure chamber is present, at a position overlapping the pressure chamber when viewed and that vibrates the vibration plate to apply pressure to the liquid; a second piezoelectric element that is provided on the first surface of the vibration plate at a position overlapping the absorbing chamber and that deforms to absorb the vibration of the liquid propagated from the pressure chamber; and a pressure detecting section that detects, based on an electromotive force of the second piezoelectric element, pressure of the liquid in the absorbing chamber.
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公开(公告)号：US20230182465A1
公开(公告)日：2023-06-15
申请号：US18063275
申请日：2022-12-08
发明人： Yu SHIOZAWA , Masaki MORI , Motoki TAKABE , Hitoshi TAKAAI , Eiju HIRAI
IPC分类号： B41J2/045
CPC分类号： B41J2/04541 , B41J2/04573 , B41J2/04581
摘要： The controller drives the piezoelectric body such that, when the cumulative number of times of the driving is a second number of times greater than the first number of times, the voltage difference is a second value smaller than the first value.
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公开(公告)号：US20230020673A1
公开(公告)日：2023-01-19
申请号：US17812302
申请日：2022-07-13
发明人： Masaki MORI , Yu SHIOZAWA , Motoki TAKABE , Hitoshi TAKAAI , Eiju HIRAI , Michiya KUBOKAWA
IPC分类号： B41J2/14
摘要： A liquid discharge head includes a pressure chamber substrate that has a plurality of pressure chambers, a piezoelectric element that is laminated at the pressure chamber substrate, and has an individual electrode individually provided for each of the plurality of pressure chambers, a common electrode commonly provided for the plurality of pressure chambers, and a piezoelectric body provided between the individual electrode and the common electrode in a lamination direction of the piezoelectric element and provided to apply pressure to a liquid in the pressure chamber, a drive wiring that is electrically coupled to the individual electrode and the common electrode, and provided to apply a voltage for driving the piezoelectric body to the piezoelectric body, and a heating resistor that is formed of the same material as any of the individual electrode, the common electrode, and the drive wiring, and provided to heat the liquid in the pressure chamber.
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公开(公告)号：US20230226818A1
公开(公告)日：2023-07-20
申请号：US18098157
申请日：2023-01-18
发明人： Motoki TAKABE , Yu SHIOZAWA
IPC分类号： B41J2/14
CPC分类号： B41J2/14233 , B41J2002/14306 , B41J2002/14419 , B81B2201/052 , B81B7/02
摘要： A MEMS device includes a first substrate 22 including a single-crystal silicon substrate and a second substrate 23 including a single-crystal silicon substrate, in which the first substrate 22 and the second substrate 23 are laminated together, and the first substrate 22 and the second substrate 23 are joined to each other such that the cleavage directions of both substrates intersect each other.
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公开(公告)号：US20230166497A1
公开(公告)日：2023-06-01
申请号：US18059609
申请日：2022-11-29
发明人： Jingling WANG , Masaki MORI , Yu SHIOZAWA
IPC分类号： B41J2/045
CPC分类号： B41J2/04563 , B41J2/04581
摘要： A liquid discharge head includes an individual electrode, a common electrode, a piezoelectric body that is provided between the individual electrode and the common electrode for applying pressure to liquid in the pressure chambers, a drive wiring that applies a voltage so as to drive the piezoelectric body, a detection resistor that is formed of the same material as any of the individual electrode, the common electrode, and the drive wiring for detecting temperature of the liquid in the pressure chambers, and a sealing substrate that has a wall portion and a ceiling portion, and protects the piezoelectric body by the wall portion and the ceiling portion. The detection resistor is provided to have a part overlapping the wall portion which is shorter than a part not overlapping the wall portion when viewed along a lamination direction of the piezoelectric body, the individual electrode, and the common electrode.
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