公开(公告)号：US20100328384A1

公开(公告)日：2010-12-30

申请号：US12816732

申请日：2010-06-16

申请人： Masayuki Kyoshima ,  Masaki Oikawa ,  Keiji Tomizawa

发明人： Masayuki Kyoshima ,  Masaki Oikawa ,  Keiji Tomizawa

IPC分类号： B41J29/38

CPC分类号： B41J2/2132

摘要： An inkjet printing apparatus and an inkjet printing method are provided which can minimize air current disturbances that occur between the print head and the print medium and also minimize density unevenness caused by mask patterns. For this purpose, the 2-pass printing is performed such that the high printing ratio region and the low printing ratio region are alternated every pixel in the nozzle-arrayed direction and that adjoining groups of high printing ratio regions are separated from one another by a group of low printing ratio regions that forms a passage wide enough for air currents to pass through.

摘要翻译： 提供一种喷墨打印设备和喷墨打印方法，其可以使打印头和打印介质之间发生的气流干扰最小化，并且还使由掩模图案引起的密度不均匀最小化。 为此，进行2遍打印，使得高打印率区域和低打印率区域在喷嘴排列方向上的每个像素交替，并且相邻的高打印率区域组彼此分离 一组低打印率区域，形成足够宽的通道，以使气流通过。

公开(公告)号：US20090251509A1

公开(公告)日：2009-10-08

申请号：US12415045

申请日：2009-03-31

申请人： Keiji Tomizawa ,  Masaki Oikawa

发明人： Keiji Tomizawa ,  Masaki Oikawa

IPC分类号： B41J2/04

CPC分类号： B41J2/05 ,  B41J2/04528 ,  B41J2/04541 ,  B41J2/04553 ,  B41J2/0458

摘要： This invention is directed to a head substrate capable of high-quality printing even when the environmental temperature, print duty, and printhead itself change, a printhead, a head cartridge, and a printing apparatus using the printhead. The head substrate includes a plurality of heaters, a constant electric current source which generates a constant electric current used to drive the heaters, and a reference current generation circuit which generates a reference current for generating the constant electric current. The head substrate also includes a MOSFET which drives the heaters by the constant electric current obtained by driving the constant electric current source in accordance with the reference current, and a switch which determines the time for which the reference current is generated. The open-close time of the switch can be externally controlled.

摘要翻译： 本发明涉及即使当环境温度，打印任务和打印头本身改变打印头，打印头盒以及使用该打印头的打印设备时也能够进行高质量打印的打印头基板。 头基板包括多个加热器，产生用于驱动加热器的恒定电流的恒定电流源，以及产生用于产生恒定电流的参考电流的参考电流产生电路。 头基板还包括MOSFET，其通过根据参考电流驱动恒定电流源获得的恒定电流驱动加热器，以及开关，其确定产生参考电流的时间。 开关的开关时间可以从外部控制。

公开(公告)号：US08845081B2

公开(公告)日：2014-09-30

申请号：US13605686

申请日：2012-09-06

申请人： Masaki Oikawa ,  Keiji Tomizawa

发明人： Masaki Oikawa ,  Keiji Tomizawa

IPC分类号： B41J2/05 ,  B41J2/04 ,  B41J2/14

CPC分类号： B41J2/14145 ,  B41J2/1404 ,  B41J2002/14403 ,  B41J2002/14467

摘要： A liquid discharge head includes a plurality of discharge ports configured to discharge liquid, a supply port configured to retain the liquid to be discharged from the plurality of discharge ports, a first pressure chamber including a first energy generation element to discharge a predetermined amount of liquid droplets, a second pressure chamber including a second energy generation element to discharge an amount of liquid droplets greater than the predetermined amount, a first flow path through which the supply port and the first pressure chamber communicate with each other, and a second flow path through which the first pressure chamber and the second pressure chamber communicate with each other.

摘要翻译： 液体排出头包括多个排出液体的排出口，构成为保持从多个排出口排出的液体的供给口，具有第一能量产生元件的第一压力室，排出规定量的液体 液滴，包括第二能量产生元件的第二压力室，以排出大于预定量的液滴量;供给口和第一压力室相互连通的第一流路，以及通过 第一压力室和第二压力室彼此连通。

公开(公告)号：US08342645B2

公开(公告)日：2013-01-01

申请号：US12768924

申请日：2010-04-28

申请人： Keiji Tomizawa ,  Masaki Oikawa ,  Masayuki Kyoshima

发明人： Keiji Tomizawa ,  Masaki Oikawa ,  Masayuki Kyoshima

IPC分类号： B41J2/15

CPC分类号： B41J29/02 ,  B41J29/38

摘要： A printing apparatus prints on a printing medium by scanning a printhead having a plurality of nozzle arrays in a first direction and a second direction opposite to the first direction, and has a structure in which an air flow entering the nozzle array in the scan of the printhead in the first direction becomes larger than an air flow entering the nozzle array in the scan of the printhead in the second direction. The apparatus increases, in scanning in the second direction, discharge speed of ink discharged from at least one nozzle array arranged leeward in the scanning direction of the printhead from a predetermined position on the printhead in the scanning direction to be higher than or equal to the discharge speed of ink discharged from at least one nozzle array arranged windward in the scanning direction of the printhead from the predetermined position.

摘要翻译： 打印装置通过在与第一方向相反的第一方向和第二方向上扫描具有多个喷嘴阵列的打印头在打印介质上打印，并且具有这样的结构：在扫描中的喷嘴阵列中的空气流 打印头沿第一方向变得大于在第二方向扫描打印头时进入喷嘴阵列的气流。 该设备在扫描方向上从打印头的扫描方向上从打印头的扫描方向排列的至少一个喷嘴阵列排出的排墨速度从扫描方向上的打印头上的预定位置增加到高于或等于 从至少一个喷嘴阵列排出的墨水的排出速度从打印​​头的扫描方向从预定位置向上排列。

公开(公告)号：US20110074884A1

公开(公告)日：2011-03-31

申请号：US12892228

申请日：2010-09-28

申请人： Chiaki Muraoka ,  Yasushi Iijima ,  Tomotsugu Kuroda ,  Naoko Tsujiuchi ,  Mikiya Umeyama ,  Masaki Oikawa ,  Yuichiro Akama ,  Keiji Tomizawa

发明人： Chiaki Muraoka ,  Yasushi Iijima ,  Tomotsugu Kuroda ,  Naoko Tsujiuchi ,  Mikiya Umeyama ,  Masaki Oikawa ,  Yuichiro Akama ,  Keiji Tomizawa

IPC分类号： B41J2/14

CPC分类号： B41J2/15 ,  B41J2/14016 ,  B41J2/2125 ,  B41J2002/14475 ,  B41J2202/11

摘要： To provide an inkjet head which includes high-density nozzle rows and which does not easily cause an ejection failure due to adhesion of ink mist around ejection orifices when a high-density image of a secondary color is printed with a small number of paths. An inkjet head includes at least two or more types of nozzle rows that eject different amounts of ink. When A is the cross section, with respect to an ink supplying direction, of an ink supply path from each ejection orifice to a supply port and L is the length of the ink supply path, the value of A/L differs between the two or more types of nozzle rows. The nozzle row of which the value of A/L is small is disposed outside an area between the nozzle rows that eject a largest amount of ink and that are arranged next to each other.

摘要翻译： 提供一种喷墨头，其包括高密度喷嘴列，并且当以少数路径打印次高颜色的高密度图像时，由于喷墨口周围的墨雾粘附而不容易引起喷射故障。 喷墨头包括排出不同量的墨的至少两种或更多种类型的喷嘴列。 当A是相对于供墨方向的从每个喷射孔到供给口的供墨路径的横截面，L是供墨路径的长度时，A / L的值在两个或 更多类型的喷嘴行。 A / L值较小的喷嘴列配置在排出最大量的墨水并且彼此相邻布置的喷嘴列之间的区域的外侧。

公开(公告)号：US08342648B2

公开(公告)日：2013-01-01

申请号：US12892228

申请日：2010-09-28

申请人： Chiaki Muraoka ,  Yasushi Iijima ,  Tomotsugu Kuroda ,  Naoko Tsujiuchi ,  Mikiya Umeyama ,  Masaki Oikawa ,  Yuichiro Akama ,  Keiji Tomizawa

发明人： Chiaki Muraoka ,  Yasushi Iijima ,  Tomotsugu Kuroda ,  Naoko Tsujiuchi ,  Mikiya Umeyama ,  Masaki Oikawa ,  Yuichiro Akama ,  Keiji Tomizawa

IPC分类号： B41J2/21

CPC分类号： B41J2/15 ,  B41J2/14016 ,  B41J2/2125 ,  B41J2002/14475 ,  B41J2202/11

摘要： To provide an inkjet head which includes high-density nozzle rows and which does not easily cause an ejection failure due to adhesion of ink mist around ejection orifices when a high-density image of a secondary color is printed with a small number of paths. An inkjet head includes at least two or more types of nozzle rows that eject different amounts of ink. When A is the cross section, with respect to an ink supplying direction, of an ink supply path from each ejection orifice to a supply port and L is the length of the ink supply path, the value of A/L differs between the two or more types of nozzle rows. The nozzle row of which the value of A/L is small is disposed outside an area between the nozzle rows that eject a largest amount of ink and that are arranged next to each other.

摘要翻译： 提供一种喷墨头，其包括高密度喷嘴列，并且当以少数路径打印次高颜色的高密度图像时，由于喷墨口周围的墨雾粘附而不容易引起喷射故障。 喷墨头包括排出不同量的墨的至少两种或更多种类型的喷嘴列。 当A是相对于供墨方向的从每个喷射孔到供给口的供墨路径的横截面，L是供墨路径的长度时，A / L的值在两个或 更多类型的喷嘴行。 A / L值较小的喷嘴列配置在排出最大量的墨水并且彼此相邻布置的喷嘴列之间的区域的外侧。

公开(公告)号：US08342631B2

公开(公告)日：2013-01-01

申请号：US12897310

申请日：2010-10-04

申请人： Masayuki Kyoshima ,  Masaki Oikawa ,  Keiji Tomizawa

发明人： Masayuki Kyoshima ,  Masaki Oikawa ,  Keiji Tomizawa

IPC分类号： B41J29/38

CPC分类号： B41J2/2125 ,  B41J2/2132 ,  G06K15/107

摘要： An objective is to provide an inkjet print apparatus and an inkjet print method capable of a print without concentration unevenness. To achieve the objective, in a multiple-pass print using mask patterns each having low-print-percentage areas and high-print-percentage areas, the print-percentage difference between high-print-percentage areas and low-print-percentage areas is cancelled out in left-edge and right-edge parts of an image to be printed.

摘要翻译： 目的是提供能够进行无浓度不均匀性的打印的喷墨打印装置和喷墨打印方法。 为了实现这一目标，在使用具有低打印百分比区域和高打印百分比区域的掩模图案的多次打印中，高打印百分比区域和低打印百分比区域之间的打印百分比差为 在要打印的图像的左边缘和右边缘部分中被取消。

公开(公告)号：US08287091B2

公开(公告)日：2012-10-16

申请号：US12816732

申请日：2010-06-16

申请人： Masayuki Kyoshima ,  Masaki Oikawa ,  Keiji Tomizawa

发明人： Masayuki Kyoshima ,  Masaki Oikawa ,  Keiji Tomizawa

IPC分类号： B41J2/145 ,  B41J2/15

CPC分类号： B41J2/2132

摘要： An inkjet printing apparatus and an inkjet printing method are provided which can minimize air current disturbances that occur between the print head and the print medium and also minimize density unevenness caused by mask patterns. For this purpose, the 2-pass printing is performed such that the high printing ratio region and the low printing ratio region are alternated every pixel in the nozzle-arrayed direction and that adjoining groups of high printing ratio regions are separated from one another by a group of low printing ratio regions that forms a passage wide enough for air currents to pass through.

摘要翻译： 提供一种喷墨打印设备和喷墨打印方法，其可以使打印头和打印介质之间发生的气流干扰最小化，并且还使由掩模图案引起的密度不均匀最小化。 为此，进行2遍打印，使得高打印率区域和低打印率区域在喷嘴排列方向上的每个像素交替，并且相邻的高打印率区域组彼此分离 一组低打印率区域，形成足够宽的通道，以使气流通过。

公开(公告)号：US20100289843A1

公开(公告)日：2010-11-18

申请号：US12768924

申请日：2010-04-28

申请人： Keiji Tomizawa ,  Masaki Oikawa ,  Masayuki Kyoshima

发明人： Keiji Tomizawa ,  Masaki Oikawa ,  Masayuki Kyoshima

IPC分类号： B41J29/38

CPC分类号： B41J29/02 ,  B41J29/38

摘要： A printing apparatus prints on a printing medium by scanning a printhead having a plurality of nozzle arrays in a first direction and a second direction opposite to the first direction, and has a structure in which an air flow entering the nozzle array in the scan of the printhead in the first direction becomes larger than an air flow entering the nozzle array in the scan of the printhead in the second direction. The apparatus increases, in scanning in the second direction, discharge speed of ink discharged from at least one nozzle array arranged leeward in the scanning direction of the printhead from a predetermined position on the printhead in the scanning direction to be higher than or equal to the discharge speed of ink discharged from at least one nozzle array arranged windward in the scanning direction of the printhead from the predetermined position.

摘要翻译： 打印装置通过在与第一方向相反的第一方向和第二方向上扫描具有多个喷嘴阵列的打印头在打印介质上打印，并且具有这样的结构：在扫描中的喷嘴阵列中的空气流 打印头沿第一方向变得大于在第二方向扫描打印头时进入喷嘴阵列的气流。 该设备在扫描方向上从打印头的扫描方向上从打印头的扫描方向排列的至少一个喷嘴阵列排出的排墨速度从扫描方向上的打印头上的预定位置增加到高于或等于 从至少一个喷嘴阵列排出的墨水的排出速度从打印​​头的扫描方向从预定位置向上排列。

公开(公告)号：US09266325B2

公开(公告)日：2016-02-23

申请号：US14124870

申请日：2012-08-10

申请人： Keiji Tomizawa ,  Masaki Oikawa

发明人： Keiji Tomizawa ,  Masaki Oikawa

IPC分类号： B41J2/14

CPC分类号： B41J2/14 ,  B41J2/1404 ,  B41J2002/14169 ,  B41J2002/14475

摘要： The print head includes an energy generating element, a chamber for accommodating liquid, and an ejection opening arranged in a position corresponding to the energy generating element. The ejection opening includes at least one projection projecting inside of the ejection opening, the ejection opening having a first region between a front end of the projection and an inner wall of the ejection opening positioned at the shortest distance from the front end, and second regions positioned on both sides of the projection and different from the first region, and when a width of the projection at a chamber-side opening face is represented as a1 and the maximum width of the projection is represented as a2, a relation a1

摘要翻译： 打印头包括能量产生元件，用于容纳液体的腔室和布置在与能量产生元件对应的位置的喷射口。 喷射口包括突出在喷射口内部的至少一个突出部，该喷射口具有位于该突起的前端和该喷射口的内壁之间的第一区域，该第一区域位于距前端最短的距离处，第二区域 位于突起的两侧并且不同于第一区域，并且当室侧开口面处的突起的宽度被表示为a1，并且突起的最大宽度表示为a2时，关系a1