公开(公告)号：US06338551B1

公开(公告)日：2002-01-15

申请号：US09094568

申请日：1998-06-15

申请人： Toshiaki Sugiura ,  Seiichi Kanemoto ,  Masatomo Kojima

发明人： Toshiaki Sugiura ,  Seiichi Kanemoto ,  Masatomo Kojima

IPC分类号： B41J2045

CPC分类号： B41J2/14233 ,  B41J2002/1425 ,  B41J2202/03

摘要： An ink jet printer head of hot-melt type for heating and melting solid ink and then discharging the melted ink onto a recording medium is provided with: a cavity plate prescribing (i) an ink flow path through which the melted ink is supplied, (ii) a plurality of ink storing chambers, each of which is connected to the ink flow path in which the supplied ink is temporarily stored, and (iii) a plurality of ink discharge holes which are connected to respective one of the ink storing chambers though which the temporarily stored ink is discharged; a piezoelectric element member, which is opposed to the cavity plate and has a plurality of piezoelectric elements for selectively changing capacities of the ink storing chambers; and a base member for supporting the piezoelectric element member. The piezoelectric element member is interposed and fixed between the cavity plate and the base member. The cavity plate, the piezoelectric element member and the base member have thermal expansion coefficients equal or approximate to each other.

摘要翻译： 一种用于加热和熔化固体油墨然后将熔化的油墨排出到记录介质上的热熔型喷墨打印机头设置有：一个空腔板，其中规定了（i）供应熔融油墨的油墨流动通道（ ii）多个墨水储存室，每个墨水储存室连接到供应墨水被暂时储存的墨水流动通道，和（iii）多个墨水排出孔，这些墨水排放孔通过连接到相应的一个储墨室 临时存储的墨水被排出; 压电元件，其与所述腔板相对，并且具有用于选择性地改变所述储墨室的容量的多个压电元件; 以及用于支撑压电元件的基座部件。 压电元件构件插入并固定在空腔板和基座构件之间。 空腔板，压电元件构件和基座构件具有彼此相等或相近的热膨胀系数。

公开(公告)号：US07614719B2

公开(公告)日：2009-11-10

申请号：US12168705

申请日：2008-07-07

申请人： Akira Iriguchi ,  Masatomo Kojima

发明人： Akira Iriguchi ,  Masatomo Kojima

IPC分类号： B41J29/393

CPC分类号： B41J2/04595 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/17509

摘要： A testing method includes sorting inkjet heads into a plurality of groups on the basis of known information about ink flow, preparing basic driving waveform data corresponding to each of the groups and modification data that partially modifies the basic driving waveform data to individually store them in advance in a storing section, creating individual waveform information that instructs combinations of the basic driving waveform data with the modification data with respect to an inkjet head to be tested to apply a modified driving waveform, and repeating the modification of the individual waveform information until a recording state becomes good.

摘要翻译： 一种测试方法包括：根据关于油墨流动的已知信息，将喷墨头分成多个组，准备对应于每个组的基本驱动波形数据和部分修改基本驱动波形数据的修改数据，以预先分别存储它们 在存储部分中，创建指示基本驱动波形数据与要测试的喷墨头的修改数据的组合以应用修改的驱动波形的单独波形信息，并且重复对各个波形信息的修改直到记录 状态变好。

公开(公告)号：US20070139485A1

公开(公告)日：2007-06-21

申请号：US11639613

申请日：2006-12-15

申请人： Masatomo Kojima

发明人： Masatomo Kojima

IPC分类号： B41J2/045

CPC分类号： B41J2/04588 ,  B41J2/04571 ,  B41J2/04581

摘要： In an ink-jet recording apparatus, an active portion for jetting a pigment ink has an area greater than an area of an active portion for jetting a dye ink. Accordingly, the active portion for jetting the pigment ink is capable of generating energy greater than that generated by the active portion for jetting the dye ink. In addition, since a diameter of nozzles which jet the pigment ink is greater than that of nozzles which jet the dye ink, it is possible to jet, at a substantially same speed, the pigment ink and the dye ink to which the different energies are imparted. Further, when performing the recording with the pigment ink, a liquid-droplet having a large volume can be obtained, and when performing the recording with the dye ink, a liquid-droplet having a small volume can be obtained.

摘要翻译： 在喷墨记录装置中，用于喷射颜料墨的活性部分的面积大于用于喷射染料墨水的活性部分的面积。 因此，用于喷射颜料墨的活性部分能够产生比用于喷射染料墨水的活性部分产生的能量更大的能量。 此外，由于喷射颜料墨的喷嘴的直径大于喷射染料墨的喷嘴的直径，所以可以以基本相同的速度喷射不同能量的颜料墨和染料墨 传授 此外，当用颜料墨进行记录时，可以获得体积大的液滴，并且当用染料墨进行记录时，可以获得体积小的液滴。

公开(公告)号：US20070109373A1

公开(公告)日：2007-05-17

申请号：US11590727

申请日：2006-10-31

申请人： Masatomo Kojima

发明人： Masatomo Kojima

IPC分类号： B41J2/17

CPC分类号： B41J2/055 ,  B41J2/14209 ,  B41J2002/14217 ,  B41J2002/14225 ,  B41J2002/14306 ,  B41J2002/14419

摘要： A liquid-droplet jetting apparatus includes a first common liquid chamber which supplies a liquid to first pressure chambers communicating with first nozzles and extending in a predetermined direction; and a second common liquid chamber which supplies a liquid to second pressure chambers communicating with second nozzles and extending in the predetermined direction. The first and second common liquid chambers are overlapped in a plan view, and each having a substantial width. A damper for attenuating pressure wave which propagates to the first and second common liquid chambers is formed at a portion in which the first and second common liquid chambers are overlapped. Each of the first common liquid chamber, the second common liquid chamber and the damper is formed to have a width overlapping with one of the first and second pressure chambers, thereby making it possible to attenuate the pressure wave efficiently.

摘要翻译： 液滴喷射装置包括：第一公共液体室，其将液体供应到与第一喷嘴连通并沿预定方向延伸的第一压力室; 以及第二公共液体室，其将液体供应到与第二喷嘴连通并沿预定方向延伸的第二压力室。 第一和第二公共液体室在平面图中重叠，并且每个都具有相当大的宽度。 在第一和第二公共液体室重叠的部分处形成用于衰减传播到第一和第二公共液体室的压力波的阻尼器。 第一公共液体室，第二公共液体室和阻尼器中的每一个形成为具有与第一和第二压力室中的一个重叠的宽度，从而可以有效地衰减压力波。

公开(公告)号：US20070091145A1

公开(公告)日：2007-04-26

申请号：US11588793

申请日：2006-10-26

申请人： Yoshikazu Takahashi ,  Masatomo Kojima ,  Hiroyuki Ishikawa ,  Masaharu Ito ,  Shin Hasegawa ,  Koichiro Hara ,  Yasuhiro Sekiguchi ,  Akira Iriguchi

发明人： Yoshikazu Takahashi ,  Masatomo Kojima ,  Hiroyuki Ishikawa ,  Masaharu Ito ,  Shin Hasegawa ,  Koichiro Hara ,  Yasuhiro Sekiguchi ,  Akira Iriguchi

IPC分类号： B41J2/04

CPC分类号： B41J2/14233 ,  B41J2/055 ,  B41J2/14209 ,  B41J2002/14419

摘要： An ink-jet head includes pressure chambers arranged in a row in a row-direction, and a manifold flow passage communicated with the pressure chambers and extending in the row-direction. An ink inflow port is formed at one end of the manifold flow passage. The manifold flow passage has a main portion, a connecting portion, and an extended portion which are arranged in this order from a side close to the ink inflow port. The manifold flow passage is communicated with the pressure chambers at the main portion. The main portion has a constant cross-sectional area greater than that of the connecting portion. A cross-sectional area of the extended portion is greater than that of the connecting portion. The pressure wave, generated in the pressure chamber and propagated to the manifold flow passage, can be efficiently attenuated by the manifold flow passage constructed as described above.

摘要翻译： 喷墨头包括排列成行方向的压力室和与压力室连通并沿行方向延伸的歧管流路。 在歧管流路的一端形成有墨水流入口。 歧管流路具有主要部分，连接部分和延伸部分，其从靠近墨水流入口的一侧依次排列。 歧管流路与主体部分的压力室连通。 主要部分的横截面面积大于连接部分的横截面面积。 延伸部分的横截面积大于连接部分的横截面面积。 在压力室中产生并传播到歧管流道的压力波可以通过如上所述构造的歧管流动通道有效地衰减。

公开(公告)号：US06419348B1

公开(公告)日：2002-07-16

申请号：US09409383

申请日：1999-09-30

申请人： Masatomo Kojima ,  Yoshiyuki Ikezaki

发明人： Masatomo Kojima ,  Yoshiyuki Ikezaki

IPC分类号： B41J2045

CPC分类号： B41J2/14209 ,  B41J2002/14217 ,  B41J2002/14225 ,  B41J2202/20

摘要： An ink ejecting device in accordance with the invention regulates the ink ejecting velocity for each nozzle. A piezoelectric element thereof is made of piezoelectric materials, internal discrete electrodes and a common electrode. When a cut in the common electrode is formed above an ink chamber, the cut creates an area where an electric field is not generated. The extent of deformation of the piezoelectric element is reduced in that area, whereby the ink ejecting velocity from the ink chamber decreases. In this way, it is possible to regulate the ink ejecting velocity for each nozzle by providing the cut and adjusting the extent of deformation. Further, the size of the cut is in proportion to the deceleration of ink ejecting velocity. This cut in the common electrode is created exactly above the center of the ink chamber so that the deforming portion and non-deforming portion of the piezoelectric element are well balanced.

摘要翻译： 根据本发明的喷墨装置调节每个喷嘴的喷墨速度。 其压电元件由压电材料，内部分立电极和公共电极制成。 当公共电极上的切口形成在墨室上方时，切口形成不产生电场的区域。 在该区域中压电元件的变形程度减小，从而墨水喷射速度降低。 以这种方式，可以通过提供切割并调整变形程度来调节每个喷嘴的喷墨速度。 此外，切割的尺寸与喷墨速度的减速成比例。 公共电极上的这种切割正好位于墨水腔的中心之上，使得压电元件的变形部分和非变形部分均衡。

公开(公告)号：US07980682B2

公开(公告)日：2011-07-19

申请号：US12286231

申请日：2008-09-29

申请人： Masatomo Kojima

发明人： Masatomo Kojima

IPC分类号： B41J2/045

CPC分类号： B41J2/14233 ,  B41J2002/14258 ,  B41J2002/14266 ,  B41J2002/14491

摘要： A piezoelectric actuator includes first active portion which correspond to a central portion of each of pressure chambers and a second active portion which correspond to a portion, of each of the pressure chambers, located on outer circumferential sides with respect to the central portion of the pressure chamber. The first active portion and the second active portion are deformed by applying the voltage to each of the first and second active portions. The first active portion is polarized in a direction parallel to the electric field generated in the first active portion, and the second active portion is polarized in a direction opposite to the electric field generated in the second active portion, thereby making it possible to suppress the crosstalk even when a high density arrangement of the pressure chambers is realized.

摘要翻译： 压电致动器包括对应于每个压力室的中心部分的第一有效部分和对应于每个压力室的相对于压力的中心部分位于外周侧的部分的第二有效部分 房间。 第一有效部分和第二有效部分通过向第一和第二有效部分中的每一个施加电压而变形。 第一有源部分在与第一有源部分中产生的电场平行的方向上极化，并且第二有源部分在与第二有源部分中产生的电场相反的方向上极化，从而可以抑制 即使实现压力室的高密度布置，串扰也是如此。

公开(公告)号：US07621613B2

公开(公告)日：2009-11-24

申请号：US11600997

申请日：2006-11-17

申请人： Masatomo Kojima

发明人： Masatomo Kojima

IPC分类号： B41J29/38

CPC分类号： B41J2/0459 ,  B41J2/04563 ,  B41J2/0457 ,  B41J2/04581

摘要： An ink-jet recording apparatus detects a temperature of an ink-jet head, and reads, from a table of set drive voltages, a drive voltage corresponding to that head temperature. The read drive voltage is determined to be a drive voltage V1 to be used in a recording for this time. Further, when the scanning number “n” of the ink-jet head has reached a value “m”, a drive voltage V2 to be used for next time is temporarily determined, based on the head temperature. When |V1−V2| is greater than a value ΔV, a voltage obtained by making a correcting, by an amount of ΔV, to the drive voltage V1 is determined to be the drive voltage V2 to be used next time. Therefore, even when the ink temperature is changed during the recording, it is possible to improve the recording quality.

摘要翻译： 喷墨记录装置检测喷墨头的温度，并从设定的驱动电压表读出与该头温度相对应的驱动电压。 读取驱动电压被确定为要在此时间的记录中使用的驱动电压V1。 此外，当喷墨头的扫描数“n”达到值“m”时，基于头温度临时确定下一次使用的驱动电压V2。 | V1-V2 | 大于值DeltaV时，通过将DeltaV的量校正到驱动电压V1而获得的电压被确定为下次要使用的驱动电压V2。 因此，即使在记录期间油墨温度改变时，也可以提高记录质量。

公开(公告)号：US20090244129A1

公开(公告)日：2009-10-01

申请号：US12411296

申请日：2009-03-25

申请人： Naoki Katayama ,  Masatomo Kojima ,  Atsushi Ito ,  Masashi Ono ,  Keiji Kura ,  Shohei Koide ,  Shigeru Suzuki ,  Yasuhiro Sekiguchi ,  Yoshitsugu Morita

发明人： Naoki Katayama ,  Masatomo Kojima ,  Atsushi Ito ,  Masashi Ono ,  Keiji Kura ,  Shohei Koide ,  Shigeru Suzuki ,  Yasuhiro Sekiguchi ,  Yoshitsugu Morita

IPC分类号： B41J29/38

CPC分类号： B41J2/14233 ,  B41J2/14274 ,  B41J2002/14266 ,  B41J2202/11

摘要： In a liquid droplet jetting mode of jetting liquid droplets, a controller controls a piezoelectric actuator to perform a liquid droplet jetting operation in which volume of a pressure chamber is decreased to a decreased volume smaller than a predetermined volume, and then the volume of the pressure chamber is increased to an increased volume greater than the predetermined volume, and the volume of the pressure chamber is again decreased to the decreased volume. On the other hand, in a warm-up mode of heating the liquid in the pressure chamber, the controller controls the piezoelectric actuator to perform at least one of a first warm-up operation in which the volume of the pressure chamber is changed repeatedly between the predetermined volume and the increased volume, and a second warm-up operation in which the volume of the pressure chamber is changed repeatedly between the predetermined volume and the decreased volume.

摘要翻译： 在喷射液滴的液滴喷射模式中，控制器控制压电致动器以执行液滴喷射操作，其中压力室的体积减小到小于预定体积的体积减小，然后压力体积 室增加到大于预定体积的增加的体积，并且压力室的体积再次减小到减小的体积。 另一方面，在加热压力室中的液体的预热模式中，控制器控制压电致动器执行第一预热操作中的至少一个，其中压力室的容积在 预定体积和增加的体积，以及第二预热操作，其中压力室的体积在预定体积和体积减小之间重复地改变。

公开(公告)号：US20090085984A1

公开(公告)日：2009-04-02

申请号：US12286231

申请日：2008-09-29

申请人： Masatomo Kojima

发明人： Masatomo Kojima

IPC分类号： B41J2/045 ,  H01L41/00

CPC分类号： B41J2/14233 ,  B41J2002/14258 ,  B41J2002/14266 ,  B41J2002/14491

摘要： A piezoelectric actuator includes first active portion which correspond to a central portion of each of pressure chambers and a second active portion which correspond to a portion, of each of the pressure chambers, located on outer circumferential sides with respect to the central portion of the pressure chamber. The first active portion and the second active portion are deformed by applying the voltage to each of the first and second active portions. The first active portion is polarized in a direction parallel to the electric field generated in the first active portion, and the second active portion is polarized in a direction opposite to the electric field generated in the second active portion, thereby making it possible to suppress the crosstalk even when a high density arrangement of the pressure chambers is realized.

摘要翻译： 压电致动器包括对应于每个压力室的中心部分的第一有效部分和对应于每个压力室的相对于压力的中心部分位于外周侧的部分的第二有效部分 房间。 第一有效部分和第二有效部分通过向第一和第二有效部分中的每一个施加电压而变形。 第一有源部分在与第一有源部分中产生的电场平行的方向上极化，并且第二有源部分在与第二有源部分中产生的电场相反的方向上极化，从而可以抑制 即使实现压力室的高密度布置，串扰也是如此。