公开(公告)号：US20230302798A1

公开(公告)日：2023-09-28

申请号：US18118141

申请日：2023-03-07

申请人： Satomi ARAKI ,  Takahiro YOSHIDA

发明人： Satomi ARAKI ,  Takahiro YOSHIDA

IPC分类号： B41J2/14

CPC分类号： B41J2/1433

摘要： A liquid discharge head includes: a nozzle plate having multiple nozzles on a plane of the nozzle plate in a first direction and a second direction orthogonal to the first direction; and a nozzle plate holder adjacent to the nozzle plate in the first direction and configured to hold the nozzle plate, wherein the multiple nozzles in the nozzle plate are arrayed in a third direction inclined with the first direction to form a nozzle array, multiple nozzle arrays, including the nozzle array, arrayed in the nozzle plate in a fourth direction inclined with respect to the second direction, and the nozzle plate has: a nozzle-plate short side inclined with respect to the second direction; and a nozzle-plate long side intersecting the nozzle-plate short side and along the fourth direction, and the nozzle-plate short side and the nozzle-plate long side form an acute angle θ1.

公开(公告)号：US20240173984A1

公开(公告)日：2024-05-30

申请号：US18520597

申请日：2023-11-28

申请人： Satomi ARAKI ,  Takahiro YOSHIDA

发明人： Satomi ARAKI ,  Takahiro YOSHIDA

IPC分类号： B41J2/175

CPC分类号： B41J2/175 ,  B41J2/04531

摘要： A head module includes at least two liquid discharge heads, a reservoir, a heater, an inlet, a first outlet, a second outlet, and a wall member. The liquid discharge heads discharge liquid. The reservoir stores the liquid. The heater heats the liquid in the reservoir. The liquid is to be introduced from the inlet into the reservoir. The liquid in the reservoir is to be delivered from the first outlet to one of the liquid discharge heads. The liquid in the reservoir is to be delivered from the second outlet to another of the liquid discharge heads. A distance between the inlet and the first outlet is shorter than a distance between the inlet and the second outlet. The wall member is interposed between the inlet and the first outlet.

公开(公告)号：US20210162746A1

公开(公告)日：2021-06-03

申请号：US17100035

申请日：2020-11-20

申请人： Satomi ARAKI

发明人： Satomi ARAKI

IPC分类号： B41J2/045

摘要： A liquid discharge apparatus includes a liquid discharge head and circuitry. The liquid discharge head includes a nozzle to discharge liquid. The circuitry is configured to: generate and output a common drive waveform including a drive pulse for discharging liquid from the nozzle of the liquid discharge head; select a waveform portion of the drive pulse to be applied to a pressure generating element of the liquid discharge head; and output a selection signal for designating the waveform portion selected. The drive pulse includes at least an expansion waveform element for expanding a pressure chamber of the liquid discharge head and a holding waveform element for holding a state expanded by the expansion waveform element. The selection signal includes a deselection signal for deselecting at least a part of a waveform portion preceding the expansion waveform element having, as a terminal, a state held by the holding waveform element.

公开(公告)号：US20160075132A1

公开(公告)日：2016-03-17

申请号：US14831202

申请日：2015-08-20

申请人： Naoko KITAOKA ,  Satomi ARAKI

发明人： Naoko KITAOKA ,  Satomi ARAKI

IPC分类号： B41J2/045

CPC分类号： B41J2/04588 ,  B41J2/04525 ,  B41J2/04581 ,  B41J2/04593 ,  B41J2/14274

摘要： An image forming apparatus includes a liquid discharge head including plural nozzles to discharge droplets; a plurality of individual liquid chambers; a pressure generator, and a head drive controller. A meniscus oscillation generated in the individual liquid chamber applied with the pressure by the pressure generator has a phase reverse to a phase of a meniscus oscillation generated in the adjacent individual liquid chamber not applied with the pressure by the pressure generator, the common drive waveform generated by the head drive controller includes a common discharge pulse used for forming droplets having at least two sizes and an noncommon discharge pulse used for forming one of the droplets having two sizes, and a pulse interval between the common discharge pulse and the noncommon discharge pulse located right before the common discharge pulse is a time area having a phase reverse to resonance.

摘要翻译： 图像形成装置包括：液体排出头，包括用于排出液滴的多个喷嘴; 多个单独的液体室; 压力发生器和头驱动控制器。 在由压力发生器施加压力的单个液体室中产生的弯液面振荡具有与在未被压力发生器施加压力的相邻独立液体室中产生的弯月面振荡的相位相反的相位，产生公共驱动波形 通过头驱动控制器包括用于形成具有至少两个尺寸的液滴的公共放电脉冲和用于形成具有两个尺寸的液滴中的一个的非常用放电脉冲，以及位于公共放电脉冲和非常用放电脉冲之间的脉冲间隔 在公共放电脉冲之前是具有与谐振相反的相位的时间区域。

公开(公告)号：US20170151780A1

公开(公告)日：2017-06-01

申请号：US15350611

申请日：2016-11-14

申请人： Kiminori MASUDA ,  Satomi ARAKI ,  Michihiko NAMBA ,  Hiroaki TAKAHASHI ,  Amika SAGARA

发明人： Kiminori MASUDA ,  Satomi ARAKI ,  Michihiko NAMBA ,  Hiroaki TAKAHASHI ,  Amika SAGARA

IPC分类号： B41J2/045

CPC分类号： B41J2/04588 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04593 ,  B41J2/14233 ,  B41J2/1606 ,  B41J2002/14475

摘要： An inkjet recording method includes applying one or more drive pulses to a pressure generating device of a recording head including a nozzle plate, a liquid chamber, and discharging droplets of ink from the nozzle. Also, the following conditions 1 and 2 are satisfied. 1. The ink has a dynamic surface tension 10 mN/m or more greater than the static surface tension of the ink when the surface life length is 15 ms and 3 mN/m or more greater than the static surface tension of the ink when the surface life length is 1,500 ms, as measured by maximum bubble pressure technique at 25 degrees C. 2. At least one of the drive pulses has a voltage changing portion to draw in the ink, the voltage changing portion having a changing time of one third or more of the resonance period of the liquid chamber.

公开(公告)号：US20170066236A1

公开(公告)日：2017-03-09

申请号：US15245577

申请日：2016-08-24

申请人： Norimasa SOHGAWA ,  Satomi ARAKI ,  Shinichiroh OSANAI

发明人： Norimasa SOHGAWA ,  Satomi ARAKI ,  Shinichiroh OSANAI

IPC分类号： B41J2/045 ,  B41J2/14 ,  B41J2/155

CPC分类号： B41J2/04588 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/04596 ,  B41J2/14201 ,  B41J2/14274 ,  B41J2/155

摘要： A device to discharge liquid includes a liquid discharging head to discharge the liquid and a drive waveform generating device to generate and output a drive waveform including continuous multiple drive pulses to discharge the liquid from the liquid discharging head that are continuously arranged in chronological order to form a single droplet. The continuous multiple drive pulses include an inflation waveform element to inflate an individual liquid chamber of the liquid discharging head and a contraction waveform element to contract the inflated individual liquid chamber to discharge the liquid. When the wave element between the continuous multiple drive pulses is determined as the holding wave element between pulses, the voltage held by the holding waveform element is higher than the initial voltage of the inflation waveform element of the first drive pulse and the ending voltage of the contraction waveform element of the last drive pulse.

摘要翻译： 排出液体的装置包括用于排出液体的液体排出头和驱动波形发生装置，以产生并输出包括连续的多个驱动脉冲的驱动波形，以从液体排出头排出液体，该液体按时间顺序连续排列以形成 单个液滴。 连续多个驱动脉冲包括用于使液体排出头的各个液体室膨胀的膨胀波形元件和收缩波形元件，以收缩膨胀的各个液体室以排出液体。 当连续多个驱动脉冲之间的波形元件被确定为脉冲之间的保持波形元件时，由保持波形元件保持的电压高于第一驱动脉冲的充气波形元件的初始电压和 收缩波形元素的最后一个驱动脉冲。