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1. 发明专利

JP2005081643A Nozzle for inkjet recording apparatus 有权
标题翻译：喷嘴记录装置喷嘴
公开(公告)号：JP2005081643A
公开(公告)日：2005-03-31
申请号：JP2003314893
申请日：2003-09-08
申请人： Hitachi Home & Life Solutions Inc , Hitachi Ltd , 日立ホーム・アンド・ライフ・ソリューション株式会社 , 株式会社日立製作所
发明人： INOUE TOMOHIRO , OKANO MAMORU , TAKIZAWA YOSHIHARU , MIYAO AKIRA
IPC分类号： B41J2/02
摘要： PROBLEM TO BE SOLVED: To provide a nozzle capable of stably amplifying a micro-oscillation of a piezoelectric body exciting an ink and preventing a fluid resonance being unstable with temperature from occurring.
SOLUTION: In order to amplify oscillation of the piezoelectric body 29 fitted on a body 30, the length of the body 30 is determined so that the resonance frequency f
b of an oscillation in the axial direction of the body is close to the driving frequency f
n of the nozzle, to amplify the oscillation by a mechanical resonance of the body 30. In addition, ink flow paths 37, 38 and 39 formed in the body 30 are respectively made into structures with steps with different inner diameters, so that the resonance frequencies of the fluid generated in the ink flow paths are made to be separated by ≥20 kHz from the driving frequency of the nozzle.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供能够稳定地放大激发墨水的压电体的微振荡并防止随着温度发生的流体共振不稳定的喷嘴。解决方案：为了放大装配在主体30上的压电体29的振动，确定主体30的长度，使得轴向振动的共振频率f SB SB 的体积接近喷嘴的驱动频率f n ，以通过机体30的机械共振放大振荡。此外，在主体中形成的油墨流路37,38和39 30分别制成具有不同内径的台阶的结构，使得在油墨流动路径中产生的流体的共振频率与喷嘴的驱动频率分开≥20kHz。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2003326681A Inkjet recorder 有权
标题翻译：喷墨记录仪
公开(公告)号：JP2003326681A
公开(公告)日：2003-11-19
申请号：JP2002136718
申请日：2002-05-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKANO MAMORU , SATO YOSHIHIRO , FURUYA KANAME , SUEMATSU KOJI
IPC分类号： B41J2/01
摘要： PROBLEM TO BE SOLVED: To provide an inkjet recorder which can obtain a stable printing quality by heating or cooling an inkjet head.
SOLUTION: At a standby position of the inkjet head 18 which prints an image onto a recording medium 12 by flying ink to the recording medium 12 transferred by a recording medium transfer means 13, there are set a temperature detecting means 24 for detecting the temperature of the inkjet head 18, and a temperature control means 25 for heating or cooling the inkjet head 18 to make the inkjet head 18 an appropriate temperature on the basis of the temperature detected by the temperature detecting means 24. Even when the inkjet recorder is used at a tropic place or a cold place, the ink in the inkjet head 18 is maintained to be an appropriate temperature at all times, and therefore the stable printing quality can be obtained without being affected by an environment where the apparatus is set.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种能够通过加热或冷却喷墨头来获得稳定的打印质量的喷墨记录器。解决方案：在喷墨头18的待机位置，其通过将墨水飞溅到由记录介质传送装置13传送的记录介质12上将图像打印到记录介质12上，设置有用于检测的温度检测装置24 喷墨头18的温度和用于加热或冷却喷墨头18以使喷墨头18基于由温度检测装置24检测到的温度的适当温度的温度控制装置25.即使当喷墨记录器在热带地方或冷处使用时，喷墨头18中的墨水始终保持适当的温度，因此可以在不受设备的环境影响的情况下获得稳定的打印质量。版权所有（C）2004，JPO

3. 发明专利

JP2003063003A Method for driving ink jet recording head 审中-公开
标题翻译：用于驱动喷墨记录头的方法
公开(公告)号：JP2003063003A
公开(公告)日：2003-03-05
申请号：JP2001259003
申请日：2001-08-29
申请人： Hitachi Koki Co Ltd , Hitachi Ltd , 日立工機株式会社 , 株式会社日立製作所
发明人： OKANO MAMORU , YAMADA KENJI
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To provide a method for driving a recording head capable of obtaining a high quality printing image by preventing ink ejected in the air from being divided, also preventing a recording dot from being formed into an oval shape or divided into two on a recording medium, in a recording head for a high speed ink jet printer.
SOLUTION: When ink drops are made to be ejected in the air from nozzles of the recording head, a second pulse which can eject ink in the air but has a lower voltage Vb than a first pulse is added and applied after the first drive pulse voltage Va to eject ink in the air. By using the second pulse, the vicinity of a rear part of the ink drops is accelerated to prevent the ink drops from being divided in the middle of the flight.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了提供一种驱动能够通过防止在空气中喷射的墨被分割而获得高质量打印图像的记录头的方法，还防止记录点形成为椭圆形或分成两个记录介质，用于高速喷墨打印机的记录头。解决方案：当墨滴从记录头的喷嘴喷射到空气中时，可以在第一驱动脉冲电压之后添加并施加可在空气中喷射墨而具有比第一脉冲更低的电压Vb的第二脉冲 Va将空气中的墨水喷出。通过使用第二脉冲，墨滴的后部附近被加速以防止墨滴在飞行中间被分开。

4. 发明专利

JP2001232793A INK JET RECORDER 失效
公开(公告)号：JP2001232793A
公开(公告)日：2001-08-28
申请号：JP2000045809
申请日：2000-02-23
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： OKANO MAMORU , YAMADA TAKEHIRO , MACHIDA OSAMU
IPC分类号： B41J2/175 , B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To provide an ink jet recorder for recording a high quality image at high speed. SOLUTION: A plurality of nozzle arrays 203a1, 203a2 and piezoelectric element arrays 204a1, 204a2 are arranged, at a constant interval, in the subscanning direction (carrying direction of recording medium) on the front and back faces of a serial 1, can recording head 201. Members 202a, 202b for introducing ink from the outside to each nozzle 203 are bonded to the back face of a head substrate 201 along the subscanning direction A.

5. 发明专利

JP2001088307A INK JET RECORDER 失效
公开(公告)号：JP2001088307A
公开(公告)日：2001-04-03
申请号：JP27281399
申请日：1999-09-27
申请人： HITACHI LTD
发明人： FUKANO YOSHINOBU , OKANO MAMORU , YONEKURA SEIJI
IPC分类号： B41J2/06 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To facilitate manufacture of a recording head of an ink jet recorder. SOLUTION: This ink jet recorder comprises a recording head 101 having a plurality of ink ejection members provided on a grid electrode plate 105 and an opposing electrode 100 provided to tip sides of the ink ejection members. A folded projection provided to an edge of the grid electrode plate 105 standing toward the side of the ink ejection member and a plurality of cutouts for allowing ink ejected from each of the ink ejection members to pass therethrough toward the side of the opposing electrode 100 are formed on the grid electrode plate 105.

6. 发明专利

JP2000326513A INK JET RECORDER AND MANUFACTURE OF RECORDING HEAD 失效
公开(公告)号：JP2000326513A
公开(公告)日：2000-11-28
申请号：JP14197099
申请日：1999-05-21
申请人： HITACHI LTD
发明人： OKANO MAMORU , FUKANO YOSHINOBU , YONEKURA SEIJI
IPC分类号： B41J2/06 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To prevent deterioration of image due to crosstalk between adjacent electrodes. SOLUTION: A plurality of ink ejection members 12 are arranged, at a predetermined pitch, in the direction traversing the recording medium carrying passage on the insulating head substrate 10 of a recording head while directing the forward end toward the common electrode 6 side. A predetermined positional shift is imparted to every other ink ejection members 12 in the carrying direction of a recording medium 7. The timing for applying a voltage to the recording electrode corresponding to each ink ejection member 12 is shifted such that ink is ejected alternately from even ink ejection member 12 and odd ink ejection member 12.

7. 发明专利

JP2000229415A INK JET RECORDER 失效
公开(公告)号：JP2000229415A
公开(公告)日：2000-08-22
申请号：JP3231799
申请日：1999-02-10
申请人： HITACHI LTD
发明人： OKANO MAMORU , FUKANO YOSHINOBU , ONOSE ATSUSHI , YONEKURA SEIJI , FUJIWARA SHIGETAKA , FUKUCHI KUNIO , IKAWA TATSUO
IPC分类号： B41J2/165 , B41J2/06 , B41J2/18 , B41J2/185
摘要： PROBLEM TO BE SOLVED: To prevent ink from adhering to the forward end of an ejection electrode by circulating the ink and cleaning the forward end of the ejection electrode periodically. SOLUTION: Ink liquid level is increased periodically until the forward end of a recording electrode is wetted and, under a state where adhering matters can be separated easily from the forward end of the recording electrode, a voltage is applied to the recording electrode ender to eject ink thus removing the adhering matters. An ink recovery member is located to avoid a recording medium carrying passage 8. In case of a scan type head, a recording head 2 is shifted to a position facing the ink recovery member when printing is not conducted and, after ink supply to an ink ejecting part 5 is increased, ink is ejected toward the ink recovery member at that position. In case of line type head, the recording head 2 is retracted when printing is not conducted and then the ink recovery member is shifted between the recording medium carrying passage 8 and the recording head 2. Thereafter, ink supply to an ink ejecting part 5 is increased and ink is ejected toward the ink recovery member at that position.

8. 发明专利

JPH11254698A INK JET RECORDER 失效
公开(公告)号：JPH11254698A
公开(公告)日：1999-09-21
申请号：JP5668098
申请日：1998-03-09
申请人： HITACHI LTD
发明人： YONEKURA SEIJI , NAGAE KEIJI , OKANO MAMORU , ONOSE ATSUSHI , FUJIWARA SHIGETAKA , FUKANO YOSHINOBU
IPC分类号： B41J2/175 , B41J2/06
摘要： PROBLEM TO BE SOLVED: To realize high speed printing while enhancing concentration efficiency, circulation efficiency and cleaning performance of ink color material of an ink circulation, electrostatic ink jet recorder where coloring material in an ink channel is concentrated through electrophoresis to a flying electrode and flied electrostatically toward a recording medium by an electric field formed between the flying electrode and a counter electrode. SOLUTION: The flying electrode 17 and the electrophoretic electrode 18 of a recording head 11 are disposed oppositely through an ink channel 15. The ink circulation inlet and outlet of the ink channel made in the recording head 11 are made in the wall face thereof where the flying electrode 17 and the electrophoretic electrode 18 are not formed. Upon finishing printing, a coloring material 16 aggregated to the flying electrode 17 is scattered and low concentration ink is circulated to clean the flying electrode 17. High speed printing is carried out by arranging a large number of recording heads 11 in parallel.

9. 发明专利

JPH11198381A INK JET IMAGE FORMING APPARATUS 失效
公开(公告)号：JPH11198381A
公开(公告)日：1999-07-27
申请号：JP101298
申请日：1998-01-06
申请人： HITACHI LTD
发明人： ONOSE ATSUSHI , FUJIWARA SHIGETAKA , OKANO MAMORU , FUKANO YOSHINOBU
IPC分类号： B41J2/06
摘要： PROBLEM TO BE SOLVED: To eliminate flying of ink from an unintended electrode and to reduce a voltage being applied to each electrode. SOLUTION: Electrodes 6B, 6D for forming an ink jet point 4 are arranged at the opening 3 of an ink tank 1 filled with ink 2 and a voltage is applied to electrodes 6A, 6C and 6E located around the ink jet point 4 contiguously thereto. Potential of the electrodes 6B, 6D for forming the ink jet point 4 is set lower than that of the electrodes 6A, 6C and 6E in order to collect ink for forming a jet meniscus. Ink collected by further increasing the voltage is then jetted to form an ink image. A bias power supply 8 and a pulse power supply 7 are employed for applying the voltage.

10. 发明专利

JPH11170536A INK JET TYPE HEAD 失效
公开(公告)号：JPH11170536A
公开(公告)日：1999-06-29
申请号：JP34793897
申请日：1997-12-17
申请人： HITACHI LTD
发明人： FUKANO YOSHINOBU , OKANO MAMORU , FUJIWARA SHIGETAKA , ONOSE ATSUSHI , YONEKURA SEIJI , KOBAYASHI SHINYA
IPC分类号： B41J2/06
摘要： PROBLEM TO BE SOLVED: To provide an ink jet type head for obtaining a good print image by supplying sufficient ink continuously while suppressing mutual electrical interference among a plurality of ink jet electrodes 3 thereby jetting ink stably at all times. SOLUTION: An ink jet type head comprises a plurality of electrode substrates 1 laminated through a spacer 2, ink channels 5 formed between the plurality of electrode substrates 1 and the spacer 2, ink jet stripe electrodes 3 formed on one side of the plurality of electrode substrates 1 while facing a recording medium at the forward end thereof, means 7a for supplying the ink jet electrode 3 with a pulse signal superposed on a bias voltage, and a pulse signal supply means 8. The ink channel 5 comprises means for circulating ink, and means for applying a second bias voltage to each conductor layer 4 formed on the other side of the plurality of electrode substrates 1.

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