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1. 发明专利

JP2003326714A Liquid drop ejection head and ink jet recorder 审中-公开
标题翻译：液体喷射头和喷墨记录仪
公开(公告)号：JP2003326714A
公开(公告)日：2003-11-19
申请号：JP2002141686
申请日：2002-05-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： EGUCHI HIROTOSHI
IPC分类号： B41J2/045 , B41J2/05 , B41J2/055
CPC分类号： B41J2002/14419
摘要： PROBLEM TO BE SOLVED: To solve a problem that dischargeability of bubble, mutual interference, and guarantee of the volume of a common liquid chamber cannot be satisfied simultaneously.
SOLUTION: The size of the common liquid chamber 8 communicating with an interconnecting part 7 extending along the arranging direction of nozzles is assumed as the length L of the common liquid chamber, the size of the common liquid chamber 8 in the direction perpendicular to the length L of the surface communicating with the interconnecting part 7 as the width W of the common liquid chamber, and the size D of the common liquid chamber 8 from an ink supply source to the common liquid chamber 8 through a coupling tube 9 as the depth D of the common liquid chamber. The depth direction is the vertical direction, the interconnecting part 7 with a pressure liquid chamber 6 is formed at the end of the common liquid chamber 8 in the widthwise direction, and the width W is set larger than the depth D of the common liquid chamber 8.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了解决不能同时满足气泡的排出性，相互干扰和保证公共液体室的体积的问题。＆lt; P＆gt;解决方案：与沿着喷嘴的排列方向延伸的互连部分7连通的公共液体室8的尺寸被认为是公共液体室的长度L，公共液体室8在垂直方向上的尺寸与公共液体室的宽度W连通的表面的长度L和公共液体室8的尺寸D通过耦合管9从供墨源到公共液体室8的尺寸D作为公共液体室的深度D。深度方向是垂直方向，具有压力液体室6的互连部分7形成在公共液体室8的宽度方向的端部，宽度W被设定为大于公共液体室的深度D 8.版权所有（C）2004，JPO

2. 发明专利

JP2009220458A Liquid discharge head and image formation device 有权
标题翻译：液体排出头和图像形成装置
公开(公告)号：JP2009220458A
公开(公告)日：2009-10-01
申请号：JP2008068490
申请日：2008-03-17
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KUSUNOKI MASAMUNE , EGUCHI HIROTOSHI
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To solve a problem that a width in a nozzle trains arrangement direction of a recording head becomes large when the nozzle trains are arranged so as to reduce bidirectional color difference.
SOLUTION: The liquid discharge head comprises nozzle trains 11-1, 11-4 which discharge liquid droplets of the same color from all nozzles 10, nozzle trains 11-2, 11-3 which are separated into a plurality of nozzle groups 12a, 12b, 12c in a nozzle arrangement direction for discharging liquid droplets of colors different from that of the nozzle trains 11-1, 11-4 and different between the nozzle groups from each nozzle groups 12a, 12b, 12c, the first common liquid chamber 13 corresponding to the nozzle trains 11-1, 11-4, and the second common liquid chamber train 14 having the second common liquid chambers 14a, 14b, 14c corresponding to each nozzle groups 12a, 12b, 12c of the nozzle trains 11-3, 11-4 arranged in the nozzle arrangement direction. The second common liquid chamber train 14 is arranged between the two nozzle trains 11-2, 11-3 adjacent to each other.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了解决当喷嘴列被布置为使得双向色差减小时记录头的喷嘴排列方向的宽度变大的问题。解决方案：液体排出头包括喷嘴列11-1,11-4，喷嘴列11-1,11-4从所有喷嘴10喷射相同颜色的液滴，喷嘴列11-2,11-3分离成多个喷嘴组 12a，12b，12c，其喷嘴布置方向用于排出与喷嘴列11-1,11-4不同的颜色的液滴，并且各个喷嘴组12a，12b，12c的喷嘴组之间不同，第一公共液体对应于喷嘴列11-1,11-4的腔室13和具有对应于喷嘴列11〜11的每个喷嘴组12a，12b，12c的第二公共液体室14a，14b，14c的第二公共液体室列14。 3，11-4布置在喷嘴排列方向上。第二公共液体室列14设置在彼此相邻的两个喷嘴列11-2,11-3之间。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2006007629A Inkjet recording head and recorder 有权
标题翻译：喷墨记录头和记录仪
公开(公告)号：JP2006007629A
公开(公告)日：2006-01-12
申请号：JP2004189286
申请日：2004-06-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHIDA TAKAHIRO , OGATA KENICHI , EGUCHI HIROTOSHI
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To prevent a pressurizing liquid chamber from being influenced by reflection of a pressure by absorbing pressure fluctuation in a common liquid chamber and effectively preventing a pressure in the common liquid chamber from being raised by eliminating resonance of the pressure without enlarging the common liquid chamber and increasing the cost.
SOLUTION: In an inkjet recording head, ink is supplied to each of the pressurizing liquid chambers from the common liquid chamber 14a and the ink in each pressurizing liquid chamber is ejected from the respective nozzle 17a by virtue of the pressure change in the respective pressurizing liquid chamber. By, for example, making a wall for delimiting the common liquid chamber to be partially thin-walled, a plurality of dumper walls 21 for absorbing pressure change in the common liquid chamber by being distorted are formed on the wall. A rib-like part 22 is provided to each portion between the dumper walls. The intervals of the rib-like parts are differentiated from each other to vary the sizes of the dumper walls. The elasticities of all of or at least a few of dumper walls are differentiated from each other.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过吸收公共液体室中的压力波动来防止加压液体室受到压力的反射的影响，并且通过消除压力的共振来有效地防止公共液体室中的压力升高而不会扩大公共液体室并增加成本。解决方案：在喷墨记录头中，从公共液体室14a向每个加压液体室供应油墨，并且由于在喷嘴记录头中的压力变化，每个加压液体室中的油墨从相应的喷嘴17a喷出各加压液室。例如，制作用于将公共液体室限定为部分薄壁的壁，在壁上形成有用于在公共液体室中变形而吸收压力变化的多个翻斗壁21。一个肋状部分22设置在翻斗墙之间的每个部分。肋状部分的间隔彼此不同，以改变翻斗壁的尺寸。所有或至少几个垃圾箱的弹性彼此不同。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2008023781A Apparatus for maintaining and recovering head, liquid delivering apparatus and image forming apparatus 有权
标题翻译：用于维护和恢复头部，液体输送装置和图像形成装置的装置
公开(公告)号：JP2008023781A
公开(公告)日：2008-02-07
申请号：JP2006197035
申请日：2006-07-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAWASE HIROSHI , EGUCHI HIROTOSHI , NAKAMURA DAISUKE
IPC分类号： B41J2/165
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for maintaining and recovering a head capable of reducing the amount of remaining liquid remained in a liquid absorbing member in a cap member and always maintaining a stable delivering recovering performance, a liquid delivering apparatus equipped with this, and an image forming apparatus. SOLUTION: A cap member 82 for capping a delivering face for delivering liquid droplets of a recording head, the liquid absorbing member 103 provided in the cap member 82, and a suction pump 108 connected with a discharging hole 106 formed on the bottom part of the cap member 82, are equipped. A projecting part 111 for supporting the liquid absorbing member 103 is formed on the bottom part of the cap member 82, and a passage 113 with a flat shape and branching toward the outer peripheral direction from the discharging hole 106 is formed. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于维持和恢复头部的装置，其能够减少保持在盖构件中的液体吸收构件中的剩余液体的量并且始终保持稳定的输送恢复性能，配备有液体输送装置并具有图像形成装置。解决方案：用于封盖用于输送记录头的液滴的输送面的盖构件82，设置在盖构件82中的液体吸收构件103和与底部形成的排出孔106连接的抽吸泵108 盖部件82的一部分被配备。在盖构件82的底部形成有用于支撑液体吸收构件103的突出部111，并且形成具有扁平形状并且从排出孔106朝向外周方向分支的通道113。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2006247840A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2006247840A
公开(公告)日：2006-09-21
申请号：JP2005063222
申请日：2005-03-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHINGYOUCHI MITSURU , KIMURA TAKASHI , EGUCHI HIROTOSHI , YAMANAKA KUNIHIRO , YOSHIDA TAKAHIRO , KAMEI TOSHIHITO
IPC分类号： B41J2/205 , B41J2/01 , B41J2/52
摘要： PROBLEM TO BE SOLVED: To solve the problem that when the number of driving signals included in a driving waveform becomes larger than the number of gradations which can be specified by gradation data, the dimension of a droplet is remarkably changed to the change in gradation, and on the other hand, when the number of bits of the gradation data is increased, cost increases. SOLUTION: The image forming apparatus is equipped with a liquid delivering head 11 for delivering droplets of a recording liquid, a driving waveform generating part 301 for generating a driving waveform containing a plurality of driving signals within one printing period, and a head driver 208 for inputting gradation data, selecting a required driving signal through a switching means opening and closing in accordance with the gradation data among the driving waveforms, and applying it on the liquid delivering head. A data transferring part 302 for transferring the gradation data composed of a plurality of bits per one channel to the head driver 208 for a plurality of times within one printing period, is also installed. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题为了解决当包括在驱动波形中的驱动信号的数量变得大于可由灰度数据指定的灰度数时，液滴的尺寸显着地改变为变化的问题在灰度级中，另一方面，当灰度数据的位数增加时，成本增加。解决方案：图像形成装置配备有用于输送记录液体的液滴的液体输送头11，用于在一个打印周期内产生包含多个驱动信号的驱动波形的驱动波形生成部301，以及头用于输入灰度数据的驱动器208，根据驱动波形中的灰度数据，通过切换装置的打开和关闭来选择所需的驱动信号，并将其施加在液体输送头上。还安装了用于在一个打印周期内将由每个通道的多个位组成的灰度数据传送到头驱动程序208多次的数据传送部分302。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2006056088A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2006056088A
公开(公告)日：2006-03-02
申请号：JP2004239078
申请日：2004-08-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MAEKAWA SHINO , EGUCHI HIROTOSHI , KIMURA TAKASHI , KATO TOMOKI , KUSUNOKI MASAMUNE , OHASHI MIKIO
IPC分类号： B41J2/175 , B41J2/01 , C09D11/00 , C09D11/322 , C09D11/324 , C09D11/326 , C09D11/38
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which can stably form an image without causing nozzle-down due to in-head pressure fluctuations, when forming the image excellent in character bleeding, color boundary bleeding, double-side printability and dryability, while securing high image density, sufficient color developability, color reproducibility, etc. by using a high-viscosity recording liquid.
SOLUTION: Fluid resistance of a filter 206, which is provided in a subtank 15 for supplying ink to a recording head 14, is reduced, and pressure is adjusted so that the pressure fluctuations P in a liquid ejection head can satisfy the condition: P=R×Q
摘要翻译：要解决的问题：提供一种能够稳定地形成图像而不会由于头内压力波动而引起喷嘴下降的图像形成装置，当形成特征渗色，色边界渗色，双面印刷性优异的图像时和可干性，同时通过使用高粘度记录液确保高图像密度，足够的显色性，色彩再现性等。解决方案：设置在用于向记录头14供应墨水的子容器15中的过滤器206的流体阻力减小，并且调节压力，使得液体喷射头中的压力波动P能够满足条件：P = R×Q <500mmAq。在这种情况下，P表示液体喷射头中的压力波动; R表示流体阻力; Q表示记录液的流量。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005144966A Ink jet recording head and ink 审中-公开
标题翻译：喷墨记录头和墨水
公开(公告)号：JP2005144966A
公开(公告)日：2005-06-09
申请号：JP2003388371
申请日：2003-11-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： EGUCHI HIROTOSHI , GOTO AKIHIKO
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To realize an ink jet recorder having a sufficient print density and exhibiting excellent rigidity in which controllability of meniscus of high viscosity ink and thereby ejection characteristics of ink drop are enhanced.
SOLUTION: The ink jet head comprises a plurality of nozzles, a pressurization liquid chamber communicating with each nozzle, a diaphragm, a driving means for varying pressure in the pressurization liquid chamber, and a supporting substrate bonded with one end of the driving means wherein image information is recorded on a recording medium by ejecting ink drops from the nozzles. The pressurization liquid chamber is formed of a high rigidity material having modulus of elasticity not lower than 500 kg/mm
2 , a supporting member coupling the supporting board and the diaphragm is provided at a position corresponding to a wall partitioning adjacent pressurization liquid chambers, the ink being ejected has high viscosity of 5 cp or above at 25°C, and the supporting member is composed of such a piezoelectric element as normal displacement of the diaphragm takes place in d33 direction.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了实现具有足够的印刷密度和显示出优异的刚度的喷墨记录器，其中高粘度油墨的弯液面的控制性以及由此提高了墨滴的喷射特性。解决方案：喷墨头包括多个喷嘴，与每个喷嘴连通的加压液室，隔膜，用于改变加压液室中的压力的驱动装置和与驱动的一端粘合的支撑基板通过从喷嘴喷射墨滴将图像信息记录在记录介质上的装置。加压液室由弹性模量不低于500kg / mm 2的高刚性材料形成，在与壁对应的位置设有连接支撑板和隔膜的支撑构件分隔相邻的加压液体室时，喷出的墨水在25℃下具有5cp或更高的高粘度，并且支撑构件由这样的压电元件构成，因为在d33方向上发生正常的隔膜位移。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2003062997A Liquid droplet ejecting head and head driving unit 审中-公开
标题翻译：液体喷射头和头驱动单元
公开(公告)号：JP2003062997A
公开(公告)日：2003-03-05
申请号：JP2001255418
申请日：2001-08-27
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： EGUCHI HIROTOSHI , NOMURA KOJI
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To prevent liquid backward flow to the common liquid chamber side in a simple configuration.
SOLUTION: An electro-thermal converter 9 for generating the state change of a liquid by heat is provided in a supply path 7 between a pressure liquid chamber 6 and a common liquid chamber 8.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了防止液体以简单的结构向公共液体室侧向后流动。解决方案：在压力液室6和公共液体室8之间的供给路径7中设置用于通过热产生液体状态变化的电热转换器9。

9. 发明专利

JP2008068594A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2008068594A
公开(公告)日：2008-03-27
申请号：JP2006251475
申请日：2006-09-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI DAISUKE , EGUCHI HIROTOSHI , OGATA KENICHI
IPC分类号： B41J2/01 , B41J2/165
摘要： PROBLEM TO BE SOLVED: To solve the problem wherein a droplet discharging failure is generated because mist flows back and adheres to the droplet discharging surface of a recording head when an image is formed by the droplet discharging while a medium is electrostatically atracted and fed.
SOLUTION: The image forming apparatus is constituted of: a nozzle plate 103 and a diaphragm 102, each formed of a polyimide; a flow path plate 101 formed of DFR; a piezoelectric element 121 bonded to the rear surface of the diaphragm 102; a supporting substrate 122 formed of PTFE supporting the piezoelectric element 121; a resin frame member 130; and an FPC cable 126 connected to the piezoelectric element 121. Thus, the droplet discharging surface is made up of an insulating body, and its outer peripheral part is also made up of an insulating body.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题为了解决由于当静电吸收介质时，当通过液滴喷射形成图像时，由于雾流回并粘附到记录头的液滴排出表面，因此产生液滴喷射故障的问题，以及美联储。解决方案：图像形成装置由以下部分构成：喷嘴板103和隔膜102，各自由聚酰亚胺形成; 由DFR形成的流路板101; 接合到隔膜102的后表面的压电元件121; 由支撑压电元件121的PTFE形成的支撑基板122; 树脂框架构件130; 以及与压电元件121连接的FPC电缆126.因此，液滴排出面由绝缘体构成，其外周部也由绝缘体构成。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2005125631A Liquid droplet ejecting head and image forming apparatus 有权
标题翻译：液体喷射头和图像形成装置
公开(公告)号：JP2005125631A
公开(公告)日：2005-05-19
申请号：JP2003364294
申请日：2003-10-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OGATA KENICHI , EGUCHI HIROTOSHI , YOSHIDA TAKAHIRO
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To solve the problem that a pressure variation of a liquid chamber at the time of driving a head causes resonance of the liquid chamber, and also impedes stable droplet ejection characteristics if a resonance frequency of the vibration agrees with a drive frequency of the head. SOLUTION: A common liquid chamber 8 is formed by a frame member 14 and a pressure absorber 21 of a lower rigidity than that of the frame member 14. When an arrangement direction of the liquid chambers is made a direction X, at least one face of wall faces along the direction X of the common liquid chamber 8 is rendered a pressure absorber face 21a of a lower rigidity than that of the other wall faces for absorbing a pressure. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题为了解决在驱动头部时液体室的压力变化引起液体室的共振的问题，并且如果振动的共振频率与振动的共振频率一致则阻碍稳定的液滴喷射特性磁头的驱动频率。解决方案：公共液体室8由刚性低于框架构件14的框架构件14和压力吸收器21形成。当液体室的排列方向成为方向X时，至少沿着公共液体室8的方向X的壁面的一个面被形成为比用于吸收压力的其它壁面的刚性低的压力吸收体面21a。版权所有（C）2005，JPO＆NCIPI

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