公开(公告)号：US10576742B2

公开(公告)日：2020-03-03

申请号：US16157238

申请日：2018-10-11

申请人： Takakazu Kihira ,  Tomoaki Murakami ,  Masami Iwama ,  Kouichi Nakano

发明人： Takakazu Kihira ,  Tomoaki Murakami ,  Masami Iwama ,  Kouichi Nakano

IPC分类号： B41J2/14

摘要： A liquid discharge head includes a nozzle plate in which a plurality of nozzles to discharge a liquid is formed in a nozzle array direction, a channel plate including partition walls to form a plurality of individual chambers communicating with the plurality of nozzles, respectively, a diaphragm bonded to the channel plate to form a wall of the plurality of individual chambers, and a plurality of electromechanical transducers bonded to the diaphragm to deform the diaphragm to generate a pressure in the plurality of individual chambers, and a cycle of vibration of natural vibration generated in the liquid in the plurality of individual chambers is equal to or larger than a cycle of a primary mode of lateral vibration of the plurality of electromechanical transducers in the nozzle array direction.

公开(公告)号：US20190224974A1

公开(公告)日：2019-07-25

申请号：US16157238

申请日：2018-10-11

申请人： Takakazu KIHIRA ,  Tomoaki Murakami ,  Masami Iwama ,  Kouichi Nakano

发明人： Takakazu KIHIRA ,  Tomoaki Murakami ,  Masami Iwama ,  Kouichi Nakano

IPC分类号： B41J2/14

摘要： A liquid discharge head includes a nozzle plate in which a plurality of nozzles to discharge a liquid is formed in a nozzle array direction, a channel plate including partition walls to form a plurality of individual chambers communicating with the plurality of nozzles, respectively, a diaphragm bonded to the channel plate to form a wall of the plurality of individual chambers, and a plurality of electromechanical transducers bonded to the diaphragm to deform the diaphragm to generate a pressure in the plurality of individual chambers, and a cycle of vibration of natural vibration generated in the liquid in the plurality of individual chambers is equal to or larger than a cycle of a primary mode of lateral vibration of the plurality of electromechanical transducers in the nozzle array direction.

公开(公告)号：US10076918B2

公开(公告)日：2018-09-18

申请号：US15439327

申请日：2017-02-22

申请人： Tomoaki Murakami ,  Takahiro Yoshida ,  Masami Iwama ,  Takakazu Kihira

发明人： Tomoaki Murakami ,  Takahiro Yoshida ,  Masami Iwama ,  Takakazu Kihira

IPC分类号： B41J29/377

CPC分类号： B41J29/377 ,  B41J2/14024 ,  B41J2/1408 ,  B41J2/14201 ,  B41J2/14314 ,  B41J2002/14362 ,  B41J2202/08

摘要： A liquid-discharging head includes a pressure-generating element configured to be actuated to apply pressure on liquid in a pressure chamber from which the liquid is discharged through a nozzle, an actuation controller configured to control actuation of the pressure-generating element, a heat-releasing member configured to contact the actuation controller, and a cover member configured to cover the actuation controller and part of the heat-releasing member. The heat-releasing member includes a first heat-releasing member and a second heat-releasing member. The first heat-releasing member is arranged outside the cover member and has a surface exposed to external air. The second heat-releasing member is arranged inside the cover member and has a first end portion to contact the actuation controller. The first heat-releasing member and the second heat-releasing member are arranged to contact each other.

公开(公告)号：US10179452B2

公开(公告)日：2019-01-15

申请号：US15844831

申请日：2017-12-18

申请人： Masami Iwama ,  Yukio Otome ,  Takahiro Yoshida ,  Takakazu Kihira ,  Takayuki Nakai ,  Shiomi Andou ,  Isamu Suzuki ,  Ryuji Yoshida ,  Kanshi Abe ,  Junichi Iwata ,  Katsuya Ishii ,  Toshimichi Odaka

发明人： Masami Iwama ,  Yukio Otome ,  Takahiro Yoshida ,  Takakazu Kihira ,  Takayuki Nakai ,  Shiomi Andou ,  Isamu Suzuki ,  Ryuji Yoshida ,  Kanshi Abe ,  Junichi Iwata ,  Katsuya Ishii ,  Toshimichi Odaka

IPC分类号： B41J2/175 ,  B41J2/14 ,  B41J2/17

摘要： A liquid discharge head includes a plurality of nozzles from which liquid is discharged, a plurality of individual-liquid-chambers communicating with the plurality of nozzles, respectively, a plurality of individual-drainage-channels communicating with the plurality of individual-liquid-chambers, respectively, a drainage-side common-liquid-chamber communicating with each of the plurality of individual-drainage-channels, a filter having filter holes and disposed between the plurality of individual-drainage-channels and the drainage-side common-liquid-chamber, and an intermediate-drainage-channel disposed between the filter and the plurality of individual-drainage-channels. The intermediate-drainage-channel faces the filter and communicates with two or more of the plurality of individual-drainage-channels. A cross-sectional area of the intermediate-drainage-channel is greater than a cross-sectional area of each of the plurality of individual-drainage-channels communicating with the intermediate-drainage-channel in a direction perpendicular to a direction of liquid flow.

公开(公告)号：US08366242B2

公开(公告)日：2013-02-05

申请号：US12825742

申请日：2010-06-29

申请人： Tomohiko Koda ,  Kenichi Yoshimura ,  Tomiyoshi Takano ,  Mitsuru Kawakami ,  Masami Iwama

发明人： Tomohiko Koda ,  Kenichi Yoshimura ,  Tomiyoshi Takano ,  Mitsuru Kawakami ,  Masami Iwama

IPC分类号： B41J2/16

CPC分类号： B41J2/155 ,  B41J2/14274 ,  B41J2202/19 ,  B41J2202/20

摘要： A liquid-ejection head unit includes a head, an electric-circuit board, electronic components, and a storage tank. The head includes a frame member and ejects droplets of liquid. The electronic components are mounted on the electric-circuit board and connected to the head. The storage tank stores liquid supplied to the head. The electric-circuit board is disposed between the frame member of the head and the storage tank to form a single multi-layered structure. The electronic components of the electric-circuit board are accommodated in at least one of a first internal space defined by the frame member of the head and the electric-circuit board and a second internal space defined by the electric-circuit board and the storage tank.

摘要翻译： 液体喷射头单元包括头部，电路板，电子部件和存储罐。 头部包括框架构件并喷射液滴。 电子部件安装在电路板上并连接到头部。 储存罐存储供应到头部的液体。 电路板设置在头部的框架构件和储存罐之间以形成单个多层结构。 电路板的电子部件容纳在由头部的框架构件和电路板限定的第一内部空间和由电路板和储存箱限定的第二内部空间中的至少一个中 。

公开(公告)号：US20200094595A1

公开(公告)日：2020-03-26

申请号：US16572079

申请日：2019-09-16

申请人： Masami Iwama ,  Shiomi Andou ,  Satoru Yoshida

发明人： Masami Iwama ,  Shiomi Andou ,  Satoru Yoshida

IPC分类号： B41J29/377 ,  B41J2/14

摘要： A liquid discharge head includes a plurality of pressure generating elements configured to generate pressure to discharge a liquid, a plurality of wirings configured to transmit a drive signal to the plurality of pressure generating elements, respectively, a plurality of integrated circuits configured to drive the plurality of pressure generating elements, respectively, the plurality of integrated circuits being provided on the plurality of wirings, respectively, and a heat sink configured to contact the plurality of integrated circuits to dissipate heat in the plurality of integrated circuits. The heat sink includes a first dissipation part that directly contacts one of the plurality of integrated circuits, and a second dissipating part that contacts another of the plurality of integrated circuits via one of the plurality of wirings.

公开(公告)号：US20140375712A1

公开(公告)日：2014-12-25

申请号：US14311562

申请日：2014-06-23

申请人： Masami Iwama

发明人： Masami Iwama

IPC分类号： B41J2/045 ,  B41J2/16

CPC分类号： B41J2/04541 ,  B41J2/04563 ,  B41J2/04578 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/16 ,  B41J2/1625 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1642 ,  Y10T29/49401

摘要： A control device of controlling a liquid droplet ejection head includes a head substrate; a head controller applying a drive voltage to the head substrate to control the ejection of liquid droplets; a relay substrate connecting the head substrate and the head controller; a main-body controller controlling the head controller; and a voltage conversion circuit disposed in the relay substrate. Further, the voltage conversion circuit converts a resistance value in accordance with a temperature of the head substrate into an output voltage, the relay substrate inputs the output voltage into the main-body controller, and the main-body controller detects the temperature based on the output voltage and determines the drive voltage based on the detected temperature.

摘要翻译： 控制液滴喷射头的控制装置包括：头基板; 头控制器，向头基板施加驱动电压以控制液滴的喷射; 连接头基板和头控制器的继电器基板; 控制头控制器的主体控制器; 以及设置在继电器基板中的电压转换电路。 此外，电压转换电路根据头基板的温度将电阻值转换为输出电压，继电器基板将输出电压输入主体控制器，主体控制器基于 输出电压，并根据检测到的温度确定驱动电压。

公开(公告)号：US11077688B2

公开(公告)日：2021-08-03

申请号：US16572079

申请日：2019-09-16

申请人： Masami Iwama ,  Shiomi Andou ,  Satoru Yoshida

发明人： Masami Iwama ,  Shiomi Andou ,  Satoru Yoshida

IPC分类号： B41J29/377 ,  B41J2/045 ,  B41J2/14

摘要： A liquid discharge head includes a plurality of pressure generating elements configured to generate pressure to discharge a liquid, a plurality of wirings configured to transmit a drive signal to the plurality of pressure generating elements, respectively, a plurality of integrated circuits configured to drive the plurality of pressure generating elements, respectively, the plurality of integrated circuits being provided on the plurality of wirings, respectively, and a heat sink configured to contact the plurality of integrated circuits to dissipate heat in the plurality of integrated circuits. The heat sink includes a first dissipation part that directly contacts one of the plurality of integrated circuits, and a second dissipating part that contacts another of the plurality of integrated circuits via one of the plurality of wirings.

公开(公告)号：US6109802A

公开(公告)日：2000-08-29

申请号：US110241

申请日：1998-07-06

申请人： Masami Iwama ,  Toshiyuki Suzuki

发明人： Masami Iwama ,  Toshiyuki Suzuki

IPC分类号： B41J2/30 ,  B41J9/00 ,  B41J21/16

CPC分类号： B41J9/00

摘要： In a dot line printer having a plurality of print hammers which are arranged to print a plurality of dot lines simultaneously when a hammer bank on which the print hammers are mounted performs one scan from one extreme to another, the dot lines originally assigned to the print hammers for printing are changed provided that a particular print hammer is driven an undue number of times when the originally assigned positions of the print hammers are maintained in the subsequent scans of the hammer bank.

摘要翻译： 在具有多个打印锤的点阵式打印机中，其布置成当安装有打印锤的锤片组从一个极端到另一个极端时进行一次扫描同时打印多个点线，原始分配给打印的点线 如果打印锤的原始分配位置保持在锤组的随后扫描中，则特定打印锤被驱动不必要次数，则打印锤被改变。

公开(公告)号：US5826990A

公开(公告)日：1998-10-27

申请号：US933967

申请日：1997-09-19

申请人： Toshiyuki Suzuki ,  Masami Iwama ,  Kohichi Yageta ,  Mitsuru Kawakami

发明人： Toshiyuki Suzuki ,  Masami Iwama ,  Kohichi Yageta ,  Mitsuru Kawakami

IPC分类号： B41J2/30 ,  B41J9/26 ,  B41J29/38

CPC分类号： B41J9/26

摘要： To prevent effective print speed from being lowered, a counter is provided for each of a plurality of print hammers. A number of times a print hammer is driven during one print phase having a predetermined period of time is counted by the counter. The counted value is compared with a reference value, and when the counted value has reached the reference value during the print phase, driving of the print hammer is halted until the end of the print phase. A reference value is changed based on the number of times the print hammer is driven during a previous print phase immediately before the present print phase. The reference value represents an allowable number the print hammer can be driven during each of successive print phases.

摘要翻译： 为了防止有效的打印速度降低，为多个打印锤中的每一个提供计数器。 通过计数器对打印锤在一个预定时间段的一个打印阶段中被驱动的次数进行计数。 将计数值与参考值进行比较，并且当在打印阶段期间计数值已经达到参考值时，停止打印锤的驱动直到打印阶段结束。 基于在紧接在当前打印阶段之前的之前的打印阶段期间打印锤被驱动的次数来改变参考值。 参考值表示在每个连续打印阶段期间可以驱动打印锤的允许数量。