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公开(公告)号：US11865837B2
公开(公告)日：2024-01-09
申请号：US17965189
申请日：2022-10-13
CPC分类号： B41J2/055 , B41J2/04525 , B41J2/1433 , B41J2/14233 , B41J2/161 , B41J2/162 , B41J2/164 , B41J2/1623 , B41J2/1628 , B41J2/1629 , B41J2/1631 , B41J2/1632 , B41J2002/14459 , B41J2202/12
摘要： A fluid ejection apparatus includes a plurality of fluid ejectors. Each fluid ejector includes a pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber. The fluid ejection apparatus includes a feed channel fluidically connected to each pumping chamber; and at least one compliant structure formed in a surface of the feed channel. The at least one compliant structure has a lower compliance than the surface of the feed channel.
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公开(公告)号：US11779957B2
公开(公告)日：2023-10-10
申请号：US16773499
申请日：2020-01-27
发明人： Arman Hajati
CPC分类号： B06B1/0276 , A61B18/082 , B06B1/0622 , B06B1/0629 , H10N30/081 , H10N30/1071 , H10N30/802
摘要： Micromachined ultrasonic transducer (MUT) arrays capable of multiple resonant modes and techniques for operating them are described, for example to achieve both high frequency and low frequency operation in a same device. In embodiments, various sizes of piezoelectric membranes are fabricated for tuning resonance frequency across the membranes. The variously sized piezoelectric membranes are gradually transitioned across a length of the substrate to mitigate destructive interference between membranes oscillating in different modes and frequencies.
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公开(公告)号：US20230150262A1
公开(公告)日：2023-05-18
申请号：US17987433
申请日：2022-11-15
发明人： Christoph Menzel
IPC分类号： B41J2/14
CPC分类号： B41J2/14201
摘要： A method for ejecting fluid from a fluid ejector includes actuating a piezoelectric actuator to cause deformation of a membrane defining a wall at a first end of an elongated channel of the fluid ejector, the deformation of the membrane causing ejection of a droplet of fluid from a nozzle disposed at a second end of the channel. The elongated channel fluidically connects a first channel to the nozzle, the first channel disposed at the first end of the elongated channel, and wherein an impedance of the first channel is at least ten times greater than an impedance of the elongated channel. Deformation of the membrane induces fluid flow along the elongated channel, and wherein at least 60% of the fluid flow induced by the deformation of the membrane is in a direction extending from the first end of the elongated channel to the second end of the elongated channel.
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公开(公告)号：US20230050914A1
公开(公告)日：2023-02-16
申请号：US17978317
申请日：2022-11-01
发明人： Christoph Menzel , Shinya Sugimoto , Mats G. Ottoson , Wayne Liu
摘要： An apparatus includes a reservoir and a printhead. The printhead includes a support structure including a deformable portion defining at least a top surface of a pumping chamber, a flow path extending from the reservoir to the pumping chamber to transfer fluid from the reservoir to the pumping chamber, and an actuator disposed on the deformable portion of the support structure. A trench is defined in a top surface of the actuator. Application of a voltage to the actuator causes the actuator to deform along the trench, thereby causing deformation of the deformable portion of the support structure to eject a drop of fluid from the pumping chamber.
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公开(公告)号：US10913264B2
公开(公告)日：2021-02-09
申请号：US16013835
申请日：2018-06-20
摘要： A fluid ejection apparatus includes a plurality of fluid ejectors. Each fluid ejector includes a pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber. The fluid ejection apparatus includes a feed channel fluidically connected to each pumping chamber; and at least one compliant structure formed in a surface of the feed channel. The at least one compliant structure has a lower compliance than the surface of the feed channel.
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公开(公告)号：US10696047B2
公开(公告)日：2020-06-30
申请号：US15722155
申请日：2017-10-02
摘要： A fluid ejector includes a fluid ejection module having a substrate and a layer separate from the substrate. The substrate includes a plurality of fluid ejection elements arranged in a matrix, each fluid ejection element configured to cause a fluid to be ejected from a nozzle. The layer separate from the substrate includes a plurality of electrical connections, each electrical connection adjacent to a corresponding fluid ejection element.
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公开(公告)号：US10308054B2
公开(公告)日：2019-06-04
申请号：US15431218
申请日：2017-02-13
摘要： A fluid ejection module mounting apparatus, including a module mount having a horizontal portion and a vertical portion, a fluid ejection module mounted to the module mount, and a clamp assembly including a recessed portion, a clamp along a wall of the recessed portion, and a lever coupled to the clamp and configured to move the clamp from an open position to a closed position. The horizontal portion has an opening configured to receive a fluid ejection module and the vertical portion has a protruding portion. The protruding portion of the module mount is configured to mate with the recessed portion of the clamp assembly.
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公开(公告)号：US10189252B2
公开(公告)日：2019-01-29
申请号：US15610445
申请日：2017-05-31
IPC分类号： B41J2/045
摘要： Methods and systems are described herein for driving droplet ejection devices with multi-level waveforms. In one embodiment, a method for driving droplet ejection devices includes applying a multi-level waveform to the droplet ejection devices. The multi-level waveform includes a first section having at least one compensating edge and a second section having at least one drive pulse. The compensating edge has a compensating effect on systematic variation in droplet velocity or droplet mass across the droplet ejection devices. In another embodiment, the compensating edge has a compensating effect on cross-talk between the droplet ejection devices.
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公开(公告)号：US10022751B2
公开(公告)日：2018-07-17
申请号：US14292413
申请日：2014-05-30
申请人： Arman Hajati , Deane Gardner , Christopher M. Daft
发明人： Arman Hajati , Deane Gardner , Christopher M. Daft
摘要： In an embodiment, a tile device includes a plurality of piezoelectric transducers elements and a base adjoining and supporting the plurality of piezoelectric transducers elements. The base includes integrated circuitry programmed to successively configure operational modes of the tile, according to a pre-programmed sequence, to successively select respective subsets of the piezoelectric transducers elements for activation. The integrated circuitry includes pulser logic to selectively activate such subsets, and demultiplexer logic to communicate from the tile sense signals resulting from such activation. In another embodiment, the demultiplexer logic is part of a first voltage domain of the tile, and the pulser logic is part of a second voltage domain of the tile. The base may include circuitry to protect the demultiplexer logic from a relatively high voltage level of the second voltage domain.
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公开(公告)号：US20180170052A1
公开(公告)日：2018-06-21
申请号：US15845371
申请日：2017-12-18
发明人： Christoph Menzel , Shinya Sugimoto , Mats G. Ottoson , Wayne Liu
CPC分类号： B41J2/14233 , B41J2/04523 , B41J2/04533 , B41J2/14032 , B41J2/1626 , B41J2/175 , B41J2/17596 , B41J2002/14258 , B41J2002/14419 , B41J2002/14459 , B41J2002/14491 , B41J2202/12
摘要： An apparatus includes a reservoir and a printhead. The printhead includes a support structure including a deformable portion defining at least a top surface of a pumping chamber, a flow path extending from the reservoir to the pumping chamber to transfer fluid from the reservoir to the pumping chamber, and an actuator disposed on the deformable portion of the support structure. A trench is defined in a top surface of the actuator. Application of a voltage to the actuator causes the actuator to deform along the trench, thereby causing deformation of the deformable portion of the support structure to eject a drop of fluid from the pumping chamber.
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