公开(公告)号：US08376522B2

公开(公告)日：2013-02-19

申请号：US12328471

申请日：2008-12-04

申请人： Masaki Oikawa ,  Mitsuhiro Matsumoto

发明人： Masaki Oikawa ,  Mitsuhiro Matsumoto

IPC分类号： B41J2/05

CPC分类号： B41J2/14145 ,  B41J2/1404 ,  B41J2/14056 ,  B41J2002/14177 ,  B41J2002/14387 ,  B41J2202/11

摘要： A liquid ejection head is provided that is adapted, when the ejection of comparatively small ink droplets by one print head is required, to not only increase a printing speed and a printing resolution but also to prevent the occurrence of cavitation. The liquid ejection head includes: nozzles, for which heaters are formed to generate thermal energy used to eject ink; and bubble generation chambers, for which ejection ports are formed for ejecting ink upon the application of thermal energy provided by the heaters. Further, a partition wall is formed in each bubble generation chamber at a position opposite the ejection port.

摘要翻译： 提供了一种液体喷射头，其适于当需要由一个打印头喷射相对小的墨滴时，不仅提高打印速度和打印分辨率，而且防止空化的发生。 液体喷射头包括：喷嘴，其中形成加热器以产生用于喷射墨水的热能; 以及气泡生成室，其中形成喷射口用于在施加由加热器提供的热能时喷射墨水。 此外，在每个气泡产生室中在与喷射口相对的位置处形成隔壁。

公开(公告)号：US07585056B2

公开(公告)日：2009-09-08

申请号：US12103991

申请日：2008-04-16

申请人： Masaki Oikawa

发明人： Masaki Oikawa

IPC分类号： B41J2/05

CPC分类号： B41J2/1404 ,  B41J2/14056 ,  B41J2/14088 ,  B41J2002/14169 ,  B41J2002/14403

摘要： An ink jet recording head can, when a smaller liquid droplet is obtained, suppress or reduce stagnation of liquid in a second discharge port portion, prevent an offset meniscus in a discharge port, reduce unstable satellite(s) and realize stable discharging with less image deterioration and less floating mist. Two heaters are provided for each bubble generating chamber and the heaters are arranged substantially symmetrically with respect to a center or a center of gravity of a second discharge port portion. In a plan view viewed from a direction perpendicular to a main surface of an element substrate, at least one of two heaters is positioned to straddle an inner area of the second discharge port portion and an outer area outside of the second discharge port portion at a region where the bubble generating chamber is communicated with the liquid supply path.

摘要翻译： 当获得较小的液滴时，喷墨记录头可以抑制或减少液体在第二排出口部分中的停滞，防止排出口中的偏移弯月面，减少不稳定的卫星，并以更少的图像实现稳定的放电 劣化和较少浮雾。 为每个气泡发生室提供两个加热器，并且加热器相对于第二排出口部分的中心或重心基本上对称地布置。 在从垂直于元件基板的主表面的方向观察的平面图中，两个加热器中的至少一个被定位成跨越第二排出口部分的内部区域和第二排出口部分的外侧区域 气泡生成室与液体供给路径连通的区域。

公开(公告)号：US20060139413A1

公开(公告)日：2006-06-29

申请号：US11304815

申请日：2005-12-16

申请人： Masaki Oikawa

发明人： Masaki Oikawa

IPC分类号： B41J2/05

CPC分类号： B41J2/1404 ,  B41J2/14056 ,  B41J2/14088 ,  B41J2002/14169 ,  B41J2002/14403

摘要： The present invention provides an ink jet recording head which, when a smaller liquid droplet is obtained, can suppress or reduce stagnation of liquid in a second discharge port portion, prevent an offset meniscus in a discharge port, reduce unstable satellite(s) and realize stable discharging with less image deterioration and less floating mist. In the present invention, two heaters 1a and 1b are provided for each bubble generating chamber and the heaters 1a and 1b are arranged substantially symmetrically with respect to a center or a center of gravity of a second discharge port portion. In a plan view viewed from a direction perpendicular to a main surface of an element substrate, at least one of two heaters is positioned to straddle an inner area of the second discharge port portion and an outer area out of the second discharge port portion.

摘要翻译： 本发明提供了一种喷墨记录头，当获得较小的液滴时，可以抑制或减少液体在第二排出口部分中的停滞，防止排出口中的偏移弯月面，减少不稳定的卫星并实现 稳定放电，图像劣化少，浮雾少。 在本发明中，为每个气泡发生室提供两个加热器1a和1b，并且加热器1a和1b相对于第二排出口部分的中心或重心基本上对称地布置。 在从垂直于元件基板的主表面的方向观察的平面图中，两个加热器中的至少一个被定位成跨越第二排出口部分的内部区域和第二排出口部分的外部区域。

公开(公告)号：US06984025B2

公开(公告)日：2006-01-10

申请号：US10419131

申请日：2003-04-21

申请人： Mineo Kaneko ,  Ken Tsuchii ,  Keiichiro Tsukuda ,  Masaki Oikawa ,  Kenji Yabe

发明人： Mineo Kaneko ,  Ken Tsuchii ,  Keiichiro Tsukuda ,  Masaki Oikawa ,  Kenji Yabe

IPC分类号： B41J2/05

CPC分类号： B41J2/14056 ,  B41J2002/14169 ,  B41J2002/14185 ,  B41J2002/14387

摘要： An ink jet head includes a substrate provided with heat generating members for generating a bubble in ink on a surface of the substrate, a plurality of discharge ports for discharging the ink, the ports opposed to the surface of the substrate, and a plurality of ink flow passages communicating with the plurality of discharge ports to feed the ink. A plurality of the heat generating members is provided in each of the ink flow passages, and the discharge port is arranged on an extension line extending from a center of a pressure generating area composed of the plurality of heat generating members toward the surface of the substrate in a normal direction. Moreover, a distance dhc between centers of each of two heat generating members arranged most apart from each other among the plurality of heat generating members is set to be larger than a diameter do of an aperture of the discharge port. In the ink jet head, even if the center position of the discharge port and the center position of the pressure generating area are somewhat shifted from each other, main liquid droplets of the ink are discharged from the discharge port without generating no shift in their discharge directions.

摘要翻译： 喷墨头包括：基板，其设置有用于在基板的表面上产生油墨的发热部件，用于排出墨水的多个排出口，与基板的表面相对的端口，以及多个墨水 与多个排出口连通的流动通道供给油墨。 在每个墨流动通道中设置有多个发热元件，并且排出口设置在从由多个发热元件组成的压力产生区域的中心朝向基板的表面延伸的延伸线 在正常的方向。 此外，将多个发热部件中彼此最大配置的两个发热部件的中心之间的距离dhc设定为大于排出口的孔径的直径do。 在喷墨头中，即使排出口的中心位置和压力​​产生区域的中心位置相互稍微偏移，墨水的主液滴从排出口排出，也不会产生排出位移 方向。

公开(公告)号：US06652055B2

公开(公告)日：2003-11-25

申请号：US09963447

申请日：2001-09-27

申请人： Masaki Oikawa

发明人： Masaki Oikawa

IPC分类号： B41J2938

CPC分类号： B41J2/04543 ,  B41J2/04565 ,  B41J2/04568 ,  B41J2/0458 ,  B41J2/04588 ,  B41J2/04591 ,  B41J2/04598 ,  B41J2202/17

摘要： When a plurality of heaters in the printing head are driven and the pulse width is controlled according to a change in the voltage drop corresponding to the number of driven heaters, the control range of the pulse width is properly determined to ensure a stable ink ejection. More specifically, the driving bit number for each block representing the number of heaters to be driven is counted; and based on this count value, a table is referenced to determine the pulse width of a single pulse. Then, in an inappropriate range of pulse width where the ink ejection amount varies largely, the single pulse is changed into a double pulse by referencing the table with the pulse width to obtain a double pulse driving waveform.

公开(公告)号：US06296342B1

公开(公告)日：2001-10-02

申请号：US08921541

申请日：1997-09-02

申请人： Masaki Oikawa

发明人： Masaki Oikawa

IPC分类号： B41J2165

CPC分类号： B41J2/16579 ,  B41J2/2114

摘要： An ink jet recording apparatus is to record by discharging ink and colorless record processing liquid to a recording medium from ink discharge ports and record processing liquid discharge ports. A detector detects discharge or non-discharge from every discharge port. The discharge recovery process for the processing liquid discharge ports is executed by discharging record processing liquid out of non-discharged ports to the recording medium. With the discharge recovery process thus arranged to be executable on the surface of a recording medium, not only the slowdown of printing speed is prevented, but also, the apparatus main body can be made smaller because there is no need for any provision of receptacle for receiving exhausted processing liquid.

摘要翻译： 喷墨记录装置通过从墨水排出口将墨水和无色记录处理液体排出到记录介质上并记录处理液体排出口进行记录。 检测器检测每个排放口的排放或不排放。 用于处理液体排出口的排放恢复处理是通过将非排出口中的记录处理液排出到记录介质来执行的。 由于排出恢复过程因此被布置成可在记录介质的表面上执行，所以不仅可以防止打印速度的减慢，而且可以使设备主体更小，因为不需要提供容器 接收耗尽的处理液体。

公开(公告)号：US06224191B1

公开(公告)日：2001-05-01

申请号：US09066864

申请日：1998-04-28

申请人： Asao Saito ,  Yoshinori Misumi ,  Masaki Oikawa

发明人： Asao Saito ,  Yoshinori Misumi ,  Masaki Oikawa

IPC分类号： B41J214

CPC分类号： B41J2/14056 ,  B41J2/14129

摘要： An ink jet recording head of high printing quality including a plurality of electro-thermal transducers arranged on a substrate corresponding to respective nozzles, wherein each protective layer placed on a resistor constituting each of the plurality of electro-thermal transducers has a thickness-reduced portion at a part thereof so as to increase the distance between the center point of the air bubble of each of the plurality of electro-thermal transducers to longer than the distance between the centers of gravity of each of the plurality of electro-thermal transducers. With the ink jet recording head, the relationship between the amount and the speed of ejected ink droplets can be optimized in accordance with the size of areas of the electro-thermal transducers.

摘要翻译： 一种具有高印刷质量的喷墨记录头，包括布置在对应于各个喷嘴的基板上的多个电热换能器，其中放置在构成多个电热换能器中的每一个的电阻器上的每个保护层具有厚度减小部分 在其一部分处，以便将多个电热换能器中的每一个的气泡的中心点之间的距离增加到比多个电热换能器中的每一个的重心之间的距离更长。 利用喷墨记录头，可以根据电热换能器的面积的大小优化喷射墨滴的量和速度之间的关系。

公开(公告)号：US06164773A

公开(公告)日：2000-12-26

申请号：US921526

申请日：1997-09-02

申请人： Masaki Oikawa

发明人： Masaki Oikawa

IPC分类号： B41J2/01 ,  B41J2/05 ,  B41J2/21 ,  B41J29/00 ,  B41M5/00

CPC分类号： B41J2/04503 ,  B41J2/04533 ,  B41J2/04558 ,  B41J2/0458 ,  B41J2/2114

摘要： A printing apparatus has an ink-jet printing head having one nozzle array for ejecting an ink, and the other nozzle array for ejecting a printing improvement liquid containing a substance making a coloring agent in the ink insoluble or coagulate. When the printing improvement liquid is ejected in advance of ejection of the ink, the ejection speed of the ink is set to be lower than the ejection speed of the printing improvement liquid. When the ink is ejected in advance of ejection of the printing improvement liquid, the ejection speed of the printing improvement liquid is set to be lower than the ejection speed of the ink. The printing apparatus is capable of preventing ejection failure or deflection of the ejecting direction due to rebounding of the printing improvement liquid or mist thereof.

摘要翻译： 印刷装置具有喷墨打印头，该喷墨打印头具有一个用于喷射墨水的喷嘴阵列，另一个喷嘴阵列用于喷射含有使不溶于或凝结的墨水中的着色剂的物质的印刷改进液体。 当打印改进液体在墨水喷射之前喷射时，油墨的喷射速度被设定为低于打印改进液体的喷射速度。 当在喷墨打印改进液体之前喷墨时，打印改进液体的喷射速度被设定为低于油墨的喷射速度。 打印装置能够防止由于打印改进液体或其雾的反弹引起喷射方向的喷射不良或挠曲。