公开(公告)号：US06264310B1

公开(公告)日：2001-07-24

申请号：US09031597

申请日：1998-02-27

申请人： Takuji Toru ,  Nobuhiro Noto ,  Kenichi Kugai ,  Takao Matsuoka ,  Yoshitaka Akiyama ,  Kazuaki Akimoto ,  Nobuhiro Kurosawa ,  Yasuo Takano

发明人： Takuji Toru ,  Nobuhiro Noto ,  Kenichi Kugai ,  Takao Matsuoka ,  Yoshitaka Akiyama ,  Kazuaki Akimoto ,  Nobuhiro Kurosawa ,  Yasuo Takano

IPC分类号： B41J2045

CPC分类号： B41J2/1623 ,  B41J2/14274 ,  B41J2/1612 ,  B41J2002/14491 ,  B41J2202/18

摘要： An on-demand ink jet head includes a plurality of piezoelectric elements in alignment with one another with one end of each facing in the same direction. The end of each piezoelectric element is bonded by an adhesive material to a diaphragm which, together with a nozzle plate, forms a pressurizing chamber. To confine the fluid state adhesive material expelled out of the endmost piezoelectric elements, a dummy piezoelectric element is disposed outside each endmost piezoelectric element. The adhesive material, when dried, serves as a damper of the piezoelectric element for damping unwanted vibrations of the piezoelectric elements. By the provision of the dummy piezoelectric elements, the distribution of the adhesive material becomes substantially even between the piezoelectric elements, resulting in uniform operations of the piezoelectric elements.

摘要翻译： 按需喷墨头包括彼此对准的多个压电元件，每个压电元件的一端各自朝向相同的方向。 每个压电元件的端部通过粘合剂材料粘合到隔膜上，隔膜与喷嘴板一起形成加压室。 为了限制排出最差压电元件的流体状态的粘合剂材料，在每个最末端的压电元件的外侧设置有虚拟的压电元件。 干燥时的粘合剂材料用作压电元件的阻尼器，用于阻尼压电元件的不期望的振动。 通过设置虚拟压电元件，粘合材料的分布在压电元件之间变得基本均匀，导致压电元件的均匀操作。

公开(公告)号：US06457222B1

公开(公告)日：2002-10-01

申请号：US09577945

申请日：2000-05-25

申请人： Takuji Torii ,  Nobuhiro Noto ,  Keiji Watanabe ,  Yoshitaka Akiyama ,  Kenichi Kugai ,  Nobuhiro Kurosawa ,  Shigenori Suematsu ,  Yasuo Takano

发明人： Takuji Torii ,  Nobuhiro Noto ,  Keiji Watanabe ,  Yoshitaka Akiyama ,  Kenichi Kugai ,  Nobuhiro Kurosawa ,  Shigenori Suematsu ,  Yasuo Takano

IPC分类号： B41J2045

CPC分类号： B41J2/1632 ,  B41J2/14274 ,  B41J2/1612 ,  B41J2/1623 ,  B41J2002/14491 ,  B41J2202/18 ,  Y10T29/42

摘要： During a method for manufacturing an ink-jet print head, piezoelectric element bars are fixed to a base plate. Then, two corners of the piezoelectric element bars are cut. The bare are then diced to be separated into individual piezoelectric elements.

摘要翻译： 在喷墨打印头的制造方法中，将压电元件棒固定在基板上。 然后，切断压电元件棒的两个角。 然后将裸体切割成单独的压电元件。

公开(公告)号：US06378972B1

公开(公告)日：2002-04-30

申请号：US09384280

申请日：1999-08-27

申请人： Yoshitaka Akiyama ,  Takuji Torii ,  Nobuhiro Noto ,  Kazuaki Akimoto ,  Kazuo Shimizu ,  Shigenori Suematsu ,  Kenichi Kugai

发明人： Yoshitaka Akiyama ,  Takuji Torii ,  Nobuhiro Noto ,  Kazuaki Akimoto ,  Kazuo Shimizu ,  Shigenori Suematsu ,  Kenichi Kugai

IPC分类号： B41J2938

CPC分类号： B41J2/04581 ,  B41J2/04588 ,  B41J2/04595 ,  B41J2002/14491 ,  B41J2202/06 ,  B41J2202/18

摘要： To increase the size of dot printed on a print medium with an on-demand multi-nozzle ink jet head, at least two unit pulses are applied in succession to a piezoelectric element which varies the volume of an ink chamber. The unit pulse has a pulse width substantially equal to a period of Helmholtz natural oscillation determined based on dimensions, materials, and physical properties of an ink channel and the piezoelectric element and other components relating to oscillation. An off duration between adjacent unit pulses applied in succession to the piezoelectric element is preferably set one fifth to one fourth of the unit pulse width.

摘要翻译： 为了使用点播多喷嘴喷墨头来增加打印在打印介质上的点的尺寸，至少两个单位脉冲依次被施加到改变墨水腔体积的压电元件。 单位脉冲的脉冲宽度基本上等于基于油墨通道和压电元件以及与振荡有关的其它部件的尺寸，材料和物理特性确定的亥姆霍兹自然振荡周期。 连续施加到压电元件的相邻单元脉冲之间的关闭持续时间优选设置为单位脉冲宽度的五分之一至四分之一。

公开(公告)号：US6053602A

公开(公告)日：2000-04-25

申请号：US127791

申请日：1998-08-03

申请人： Nobuhiro Noto ,  Takuji Torii ,  Yoshitaka Akiyama ,  Yasuo Takano ,  Norimasa Kondo ,  Nobuhiro Kurosawa

发明人： Nobuhiro Noto ,  Takuji Torii ,  Yoshitaka Akiyama ,  Yasuo Takano ,  Norimasa Kondo ,  Nobuhiro Kurosawa

IPC分类号： B41J2/14 ,  B41J2/16 ,  B41J2/045

CPC分类号： B41J2/1623 ,  B41J2/14274 ,  B41J2/161 ,  B41J2/1612 ,  B41J2/1632 ,  B41J2002/14491 ,  B41J2202/18

摘要： An on-demand multi-nozzle ink jet head includes a diaphragm and a plurality of piezoelectric stacks. The diaphragm forms at least one wall of a pressurizing chamber used to increase the pressure of the ink. When print signals are applied to the piezoelectric stacks. The stacks generate pressure fluctuations in the walls of the pressurizing chamber. An elastic material with adhesive properties is used to bond the diaphragm to the piezoelectric stacks, which elastic material has a Shore hardness of less than 80 on the A scale and less than 30 on the D scale.

摘要翻译： 按需的多喷嘴喷墨头包括隔膜和多个压电叠层。 隔膜形成用于增加墨水压力的加压室的至少一个壁。 当打印信号被施加到压电叠层时。 堆叠在加压室的壁中产生压力波动。 使用具有粘合性质的弹性材料将隔膜粘合到压电叠层上，该弹性材料在A刻度上具有小于80的肖氏硬度，在D刻度上小于30。

公开(公告)号：US06679589B2

公开(公告)日：2004-01-20

申请号：US10158457

申请日：2002-05-31

申请人： Hiroshi Takahagi ,  Nobuhiro Noto ,  Yutaka Shoji ,  Yoshitaka Akiyama ,  Kenji Yamada ,  Kenichi Kugai

发明人： Hiroshi Takahagi ,  Nobuhiro Noto ,  Yutaka Shoji ,  Yoshitaka Akiyama ,  Kenji Yamada ,  Kenichi Kugai

IPC分类号： B41J2045

CPC分类号： B41J2/1623 ,  B41J2/14274 ,  B41J2/1612 ,  B41J2002/14403

摘要： An ink jet print head includes pressure chambers, a diaphragm forming a side of the pressure chambers, stacked piezoelectric elements, a piezoelectric element fixing plate, and a housing. The stacked piezoelectric elements are attached to the diaphragm in a one-to-one correspondence with pressure chambers. The piezoelectric element fixing plate is fixedly attached to and supports the stacked piezoelectric elements. The housing includes a common ink channel portion that supplies ink to the pressure chambers. The piezoelectric element fixing plate and the stacked piezoelectric elements are disposed at least partially in the space defined by the diaphragm and internal side walls of the ink channel portion with a gap existing between the piezoelectric element fixing plate and the internal side walls.

摘要翻译： 喷墨打印头包括压力室，形成压力室一侧的隔膜，堆叠的压电元件，压电元件固定板和壳体。 层叠的压电元件与压力室一一对应地附接到隔膜。 压电元件固定板固定地安装并支撑堆叠的压电元件。 壳体包括向压力室供应墨水的公共墨水通道部分。 压电元件固定板和堆叠的压电元件至少部分地设置在由膜片和墨水通道部分的内侧壁限定的空间中，其间存在压电元件固定板和内侧壁之间的间隙。

公开(公告)号：US6102512A

公开(公告)日：2000-08-15

申请号：US815004

申请日：1997-03-14

申请人： Takuji Torii ,  Nobuhiro Noto ,  Kazuaki Akimoto ,  Shigenori Suematsu ,  Yoshitaka Akiyama ,  Ryoji Yabuki

发明人： Takuji Torii ,  Nobuhiro Noto ,  Kazuaki Akimoto ,  Shigenori Suematsu ,  Yoshitaka Akiyama ,  Ryoji Yabuki

IPC分类号： B41J2/045 ,  B41J2/055 ,  B41J29/38

CPC分类号： B41J2/04581 ,  B41J2/04588 ,  B41J2/04591 ,  B41J2202/18

摘要： A piezoelectric element is driven by a predetermined pulse width in the range of 60 to 100% of the Helmholtz resonance vibration period of an ink vibration system comprising an orifice, a pressurizing chamber, a restrictor, the piezoelectric element, and an elastic material.

摘要翻译： 压电元件由包括孔，加压室，限制器，压电元件和弹性材料的墨振动系统的亥姆霍兹共振振动周期的60至100％的预定脉冲宽度驱动。

公开(公告)号：US06394589B1

公开(公告)日：2002-05-28

申请号：US09451919

申请日：1999-12-01

申请人： Charles A. Willus ,  Stuart D. Howkins ,  Nobuhiro Noto ,  Yoshitaka Akiyama

发明人： Charles A. Willus ,  Stuart D. Howkins ,  Nobuhiro Noto ,  Yoshitaka Akiyama

IPC分类号： B41J2045

CPC分类号： B41J2/14274 ,  B41J2/055 ,  B41J2002/14403 ,  B41J2002/14419

摘要： An ink jet printhead composed of: a reservoir storing a quantity of printing ink, an ink manifold defining an ink supply volume in communication with the reservoir for holding a supply of ink received from the reservoir and a plurality of individually controlled ink jet delivery channels, each of the channels having an ink drop ejection transducer and an orifice to eject successive ink drops on demand in response to pressure pulses produced by the transducer, and each of the channels being in communication with the ink supply volume for receiving ink from the ink supply volume. The manifold is constructed to give the ink supply volume a large acoustic compliance to minimize propagation of pressure disturbances in the ink supply volume and acoustic signal crosstalk between the channels.

摘要翻译： 一种喷墨打印头，包括：储存一定数量的印刷油墨的储存器，限定与储存器连通的供墨容积的油墨歧管，用于保持从储存器接收的油墨供应;以及多个单独控制的喷墨输送通道， 每个通道具有墨滴喷射传感器和孔口，以响应于由换能器产生的压力脉冲来喷射连续的墨滴，并且每个通道与供墨容器连通，用于从墨水供应墨水 卷。 歧管被构造成使墨水供应体积具有大的声学顺应性，以最小化墨水供应体积中的压力扰动的传播和声道之间的声学​​信号串扰。

公开(公告)号：US06328397B1

公开(公告)日：2001-12-11

申请号：US09390669

申请日：1999-09-07

申请人： Kazuo Shimizu ,  Takuji Torii ,  Nobuhiro Noto ,  Yoshitaka Akiyama ,  Masatoshi Sakata ,  Shigenori Suematsu

发明人： Kazuo Shimizu ,  Takuji Torii ,  Nobuhiro Noto ,  Yoshitaka Akiyama ,  Masatoshi Sakata ,  Shigenori Suematsu

IPC分类号： B41J2938

CPC分类号： B41J2/04508 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/04588

摘要： To eliminate influence of cross-talk in an on-demand multi-nozzle ink jet head, drive pulses to be applied to piezoelectric elements for driving nozzles aligned in a row are individually adjusted so that the nozzles eject ink droplets at the same speed when the nozzles are driven simultaneously. To the piezoelectric elements which are deactuated during printing, a dummy drive pulse having a voltage level in a range from 50 to 75% of a minimum voltage for ejecting an ink droplet is applied, whereby the ejection speed achieved when individual nozzles are driven approaches the ejection speed achieved when all nozzles are driven simultaneously. As such, the print quality is improved.

摘要翻译： 为了消除按需多喷嘴喷墨头中的串扰的影响，单独调整要施加到用于驱动排列成行的喷嘴的压电元件的驱动脉冲，使得喷嘴以相同的速度喷射墨滴 喷嘴同时驱动。 对于在打印期间被去激活的压电元件，施加具有用于喷射墨滴的最小电压的50至75％范围内的电压电平的虚拟驱动脉冲，由此在驱动各个喷嘴时实现的喷射速度接近 所有喷嘴同时驱动时的喷射速度。 因此，打印质量得到改善。

公开(公告)号：US06592196B2

公开(公告)日：2003-07-15

申请号：US09986734

申请日：2001-11-09

申请人： Yoshitaka Akiyama ,  Nobuhiro Noto ,  Yutaka Shoji ,  Hiroshi Takahagi ,  Osamu Machida ,  Yoshinari Suzuki

发明人： Yoshitaka Akiyama ,  Nobuhiro Noto ,  Yutaka Shoji ,  Hiroshi Takahagi ,  Osamu Machida ,  Yoshinari Suzuki

IPC分类号： B41J2938

CPC分类号： B41J2/04581 ,  B41J2/04588

摘要： An appropriate pulse width of a driving pulse for driving a piezoelectric element of ink jet head is determined by using the head difference. That is, the pulse width with which the least change in the ink speed occurs can be used as the pulse width of the driving signal for the piezoelectric actuator. As a result, a reliable ink jet printer head capable of stably ejecting ink droplets over a long period of time and having excellent frequency characteristics can be provided.

公开(公告)号：US09290005B1

公开(公告)日：2016-03-22

申请号：US14849457

申请日：2015-09-09

申请人： Yoshitaka Akiyama ,  Ryuuta Katoh ,  Kazuki Yasu ,  Yoshinari Suzuki

发明人： Yoshitaka Akiyama ,  Ryuuta Katoh ,  Kazuki Yasu ,  Yoshinari Suzuki

IPC分类号： B41J2/21

CPC分类号： B41J2/2146 ,  B41J2/16579 ,  B41J2/16585 ,  B41J2/2114 ,  B41J2/2135 ,  B41J2/2142

摘要： An image formation apparatus includes a first discharge unit to form an image on a recording medium; and a second discharge unit including a nozzle line that discharges transparent droplets on the image formed on the recording medium. The second discharge unit moves in a first direction relative to the recording medium and the nozzle line has nozzles in a second direction orthogonal to the first direction. After the image formation, the second discharge unit discharges the transparent droplets from the nozzles spaced at m−1 nozzle intervals to form a row of dots in the second direction, and repeats the forming while moving to form m rows in the first direction, such that the dots in the rows are formed at m−1 nozzle intervals and positions of the dots between n-th and n−1-th rows are displaced together by one nozzle in the second direction.

摘要翻译： 图像形成装置包括：第一放电单元，用于在记录介质上形成图像; 以及第二排出单元，其包括在形成在记录介质上的图像上排出透明液滴的喷嘴线。 第二排出单元相对于记录介质沿第一方向移动，并且喷嘴线具有与第一方向正交的第二方向的喷嘴。 在图像形成之后，第二放电单元从以m-1喷嘴间隔间隔开的喷嘴排出透明液滴，以在第二方向上形成一排点，并且在移动时重复形成，以在第一方向上形成m行， 行中的点以m-1个喷嘴间隔形成，并且在第n和第n-1行之间的点的位置在第二方向上由一个喷嘴一起移位。