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1. 发明专利

JP2013193292A Liquid-jet head, and image forming apparatus 有权
标题翻译：液体喷头和图像形成装置
公开(公告)号：JP2013193292A
公开(公告)日：2013-09-30
申请号：JP2012061640
申请日：2012-03-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KUWATA MASAHIRO , YAMANAKA KUNIHIRO , HIDA SATORU
IPC分类号： B41J2/055 , B41J2/045
CPC分类号： B41J2/045 , B41J2/14274 , B41J2202/11
摘要： PROBLEM TO BE SOLVED: To stabilize liquid ejection characteristics when a channel plate is formed of a thin layer.SOLUTION: In a groove 6a forming an individual liquid chamber 6, a liquid supply channel 7 and a liquid introducing part, of a channel plate 2, an island part (island protrusion part) 31 elongated in a liquid flowing direction is formed in a region of the liquid supply channel 7, so that two fluid resistance parts 7a and 7b are formed. A gradient part 32 is formed at least at an end part on the individual liquid chamber 6 side in the liquid flowing direction, of the island part 31, on a facing surface 6b side of the individual liquid chamber 6 facing a diaphragm member 3.
摘要翻译：要解决的问题：当通道板由薄层形成时，以稳定液体喷射特性。解决方案：在通道板2的形成单个液体室6，液体供应通道7和液体引入部分的槽6a中在液体供给通路7的区域形成有在液体流动方向上延伸的岛部（岛突出部）31，从而形成两个流体阻力部7a，7b。在单个液体室6的面对隔膜部件3的相对表面6b侧，至少在岛部31的液体流动方向上的各个液体室6侧的端部形成有梯度部32。

2. 发明专利

JP2012183730A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2012183730A
公开(公告)日：2012-09-27
申请号：JP2011048559
申请日：2011-03-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMANAKA KUNIHIRO
IPC分类号： B41J2/175
CPC分类号： Y02P70/20
摘要： PROBLEM TO BE SOLVED: To prolong the life of an image forming apparatus by solving a problem caused due to the clogging of a foreign matter-removing filter provided in a liquid discharge head.SOLUTION: An inkjet image forming apparatus discharges droplets of an ink from which foreign matters are removed by the foreign matter-removing filter to a paper according to a discharge drive frequency. The image forming apparatus includes: a clogging index value-determining means for predicting the degree of clogging in the foreign matter-removing filter to determine a clogging index value S that shows the degree of clogging; and a discharge drive frequency-controlling means for changing a frequency obtained when the clogging index value S thus determined is larger than an allowance threshold R, to a frequency lower than a discharge drive frequency to be obtained when the clogging index value S does not exceed the allowance threshold R.
摘要翻译：要解决的问题：通过解决由于设置在液体排出头中的异物去除过滤器的堵塞而导致的问题来延长图像形成装置的寿命。解决方案：喷墨图像形成装置根据排出驱动频率将由异物除去过滤器除去的异物的墨滴滴到纸上。图像形成装置包括：堵塞指标值确定装置，用于预测异物去除过滤器中的堵塞程度，以确定显示堵塞程度的堵塞指数值S; 以及放电驱动频率控制装置，用于将当所确定的堵塞指数值S大于允许阈值R时获得的频率改变为低于当堵塞指数值S不超过时获得的放电驱动频率的频率津贴阈值R.版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2012179813A Liquid discharge head and image forming apparatus 有权
标题翻译：液体放电头和图像形成装置
公开(公告)号：JP2012179813A
公开(公告)日：2012-09-20
申请号：JP2011044726
申请日：2011-03-02
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMANAKA KUNIHIRO , TSUNODA SHINICHI , MAEBAYASHI HIRONORI , UENO YOSHIKAZU
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To solve the problem that a convex part connected with a piezoelectric member is a shape such that a central part rises thickly in the direction along the longitudinal direction of a liquid chamber due to high compactness of a nozzle when a vibration plate member is to be formed by electrocasting.SOLUTION: When a connection part of the convex part 2B of the vibration plate member 2 with a vibration area 2A of a first-stage overhang shaped part 101 is the first connection part 101a, and a connecting part of the first-stage overhang shaped part 102 with a second-stage overhang shaped part 102 is the second connection part 102a, the width W1 in the direction along the lateral direction of the liquid chamber of the first connection part 101a is smaller than the width W2 in the direction along the lateral direction of the liquid chamber of the second connection part 102a (W1
摘要翻译：要解决的问题为了解决与压电元件连接的凸部是由于喷嘴的高度紧凑性而使得中心部沿着液体室的长度方向的方向厚度上升的形状的问题，振动板构件将通过电铸而形成。解决方案：当振动板构件2的凸起部分2B的具有第一级悬垂形部分101的振动区域2A的连接部分是第一连接部分101a时，第一级的连接部分具有第二级突出形状部分102的突出形状部分102是第二连接部分102a，沿着第一连接部分101a的液体室的横向方向的宽度W1小于沿着第一连接部分101a的方向上的宽度W2 第二连接部102a的液体室的横向（W1

4. 发明专利

JP2012051303A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2012051303A
公开(公告)日：2012-03-15
申请号：JP2010197230
申请日：2010-09-03
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MATSUBARA MITSUYA , TANAKA AKIYOSHI , ITO YOICHI , KATO TOMOKI , KIKUKAWA FUMITAKA , PARK SOYOUNG , YAMANAKA KUNIHIRO , SUZUKI KAZUYOSHI , TAKANO KUNIKAZU , JO HONRIKU , TANAKA YUJI , ENDO SATOSHI
IPC分类号： B41J2/18 , B41J2/165 , B41J2/185
CPC分类号： B41J2/16508 , B41J2/16523 , B41J2/175 , B41J2/18 , B41J29/38 , B41J2002/16594
摘要： PROBLEM TO BE SOLVED: To solve problems wherein, when a negative pressure in a cap is reduced, air flows in a suction cap from a waste liquid tank side through a discharge path and air bubbles are generated in the cap, and color mixture or the like occurs.SOLUTION: The image forming apparatus includes: a recording head 24 having a nozzle face 124 on which nozzles that discharge liquid droplets are formed; the suction cap 92a for capping the nozzle face 124 of the recording head 24; the discharge path 191 connected to the suction cap 92a; a suction pump 96 provided in the discharge path 191 and formed of a tube pump; and an atmosphere opening port 193 for opening an airtight space, created when the nozzle face 124 is capped by the suction cap 92a, to an atmosphere. The atmosphere opening port 193 is communicated with the inside of the cap 92a at a position higher than a surface of liquid discharged into the suction cap 92a, and a check valve 196 for preventing a flow of liquid toward the cap 92a from the suction pump 96 is provided in the discharge path 191.
摘要翻译：解决问题的方案为了解决如下问题：当帽中的负压减小时，空气在废液罐侧通过排出路径从吸液帽流出，并且在盖中产生气泡，并且颜色混合物等发生。图像形成装置包括：具有喷嘴面124的记录头24，喷嘴液面形成有喷嘴; 用于封盖记录头24的喷嘴面124的吸附盖92a; 连接到吸入盖92a的排出路径191; 设置在排出路径191中并由管式泵构成的抽吸泵96; 以及当喷嘴面124被吸盘盖92a盖住时产生的气密空间的大气开放口193到大气。大气开放口193在帽92a的内部与排出到吸入帽92a的液体的表面相比高的位置连通，以及止回阀196，用于防止液体从吸引泵96向帽92a流动设置在排出路径191中。版权所有（C）2012，JPO＆INPIT

5. 发明专利

JP2009119766A Liquid discharge head, ink cartridge, and image forming apparatus 有权
标题翻译：液体放电头，墨盒和图像形成装置
公开(公告)号：JP2009119766A
公开(公告)日：2009-06-04
申请号：JP2007297739
申请日：2007-11-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMANAKA KUNIHIRO , YAMAGUCHI KIYOSHI
IPC分类号： B41J2/01
CPC分类号： B41J2/14274 , B41J2/04541 , B41J2002/14362 , B41J2002/14491 , H05K1/147
摘要： PROBLEM TO BE SOLVED: To miniaturize a head constituted to give a driving signal to a driving element using a flexible printed board.
SOLUTION: This liquid discharge head has piezoelectric elements 12, 12 constituting driving element rows in which a plurality of driving piezoelectric element columns 12A generating energy for discharging liquid droplets from a nozzle 4 are arranged; a wiring board 24 arranged on the opposite side to a surface formed with the nozzle 4; and two flexible printed boards 15, 15 having output terminal parts 22 provided corresponding to the respective piezoelectric elements 12, 12 and connected to the plurality of driving piezoelectric element columns 12A, and input terminal parts 21 pulled out to the wiring board 24 side and connected to the wiring board 24. The respective flexible printed board 15 are arranged to face each other in a state of the input terminal parts 21, 21 not facing each other, and the input terminal parts 21 of the respective flexible printed boards 15, 15 are bent in a facing direction and connected to the wiring board 24.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：使用柔性印刷电路板将构成为向驱动元件提供驱动信号的磁头小型化。解决方案：该排液头具有构成驱动元件列的压电元件12,12，其中布置有多个驱动压电元件柱12A，其产生用于从喷嘴4排出液滴的能量; 布置在与喷嘴4形成的表面相对的一侧的布线板24; 和两个柔性印刷电路板15,15，其具有对应于各个压电元件12,12设置并连接到多个驱动压电元件列12A的输出端子部分22和被拉出到布线板24侧的输入端子部分21，并连接相应的柔性印刷电路板15在输入端子部21,21彼此不相对的状态下相对配置，各个柔性印刷电路板15,15的输入端子部21 在相对方向弯曲并连接到布线板24.版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2005138412A Inkjet recorder, ink cartridge and recording liquid used therein 审中-公开
标题翻译：喷墨记录器，墨盒和记录液体
公开(公告)号：JP2005138412A
公开(公告)日：2005-06-02
申请号：JP2003376783
申请日：2003-11-06
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMANAKA KUNIHIRO
IPC分类号： B41J2/01 , B41J2/05 , B41J2/14 , B41J2/175 , C09D11/00 , C09D11/322 , C09D11/38
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable inkjet recorder that has a highly stable ejection performance and can stably obtain a high quality image superior in a high coloring property, a high water resistance, and a high scratch resistance even in the high speed printing, and to provide an ink cartridge loaded to the recorder and a recording liquid used therein.
SOLUTION: A recording liquid supply source, an ejection nozzle and a means for generating an ejection pressure to be applied to a recording liquid are provided on a liquid channel of a recording head. A curved face having a radius of curvature which is more than two times of an averaged diameter of pigment particles in the recording liquid is provided on a corner of an inner section forming a cavity structure of the liquid channel. The recording head is mounted on the inkjet recorder and the recording liquid containing a pigment and a resin dispersant and having the surface tension of 30 mN/m or less is used therein. The recording head and an ink tank for supplying the recording liquid are united to form the ink cartridge, and then the ink cartridge is mounted on the inkjet recorder.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种具有高度稳定的喷射性能的高可靠性喷墨记录器，并且即使在高色彩性能下也可以稳定地获得高着色性，高耐水性和高耐擦伤性的优质图像高速打印，并提供装载到记录器的墨盒和其中使用的记录液体。解决方案：在记录头的液体通道上设置有记录液体供给源，喷射喷嘴和用于产生要施加到记录液体的喷射压力的装置。在形成液体通道的空腔结构的内部部分的角部，设置曲率半径大于记录液中的颜料颗粒的平均直径的两倍的曲面。记录头安装在喷墨记录器上，并且使用含有颜料和树脂分散剂并且表面张力为30mN / m以下的记录液。将记录头和用于供应记录液体的墨水盒结合在一起形成墨盒，然后将墨盒安装在喷墨记录器上。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2011056922A Liquid discharging head, and image forming apparatus 审中-公开
标题翻译：液体排出头和图像形成装置
公开(公告)号：JP2011056922A
公开(公告)日：2011-03-24
申请号：JP2009212538
申请日：2009-09-14
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMANAKA KUNIHIRO
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To solve the problem that the miniaturization of constituent parts of a head, and the firm bonding of a nozzle protecting member are difficult.
SOLUTION: This liquid discharging head includes: a channel 1 in which a nozzle plate 3 and a nozzle plate 3 are bonded to form an individual channel 6 with which a nozzle 4 communicates; and a nozzle cover member 31 which covers the surface peripheral edge sections of the nozzle plates 3 and the head peripheral section. A cutting section 3a which becomes a part of the outer peripheral section of the nozzle plate 3 is fitted in a groove section 30 which is formed on the surface on the outside of the outer peripheral section of the nozzle plate 3 of the channel 1. The channel 1 and the nozzle cover member 31 are bonded with an adhesive 41 which is provided in the groove section 30 of the channel 1.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了解决头部构成部件的小型化以及喷嘴保护部件的牢固结合困难的问题。该液体排出头包括：通道1，其中喷嘴板3和喷嘴板3接合，形成与喷嘴4连通的单个通道6; 以及覆盖喷嘴板3的表面周缘部分和头部周边部分的喷嘴盖部件31。成为喷嘴板3的外周部的一部分的切断部3a嵌合在形成在通道1的喷嘴板3的外周部的外侧的表面上的槽部30中。通道1和喷嘴盖构件31与设置在通道1的槽部30中的粘合剂41接合。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2009196283A Liquid droplet discharge head, ink cartridge, and image forming apparatus 有权
标题翻译：液体喷射头，墨盒和图像形成装置
公开(公告)号：JP2009196283A
公开(公告)日：2009-09-03
申请号：JP2008042275
申请日：2008-02-23
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMANAKA KUNIHIRO
IPC分类号： B41J2/045 , B41J2/055
CPC分类号： B41J2/14274 , B41J2/15 , B41J2/155 , B41J2002/14491 , B41J2202/20 , H05K1/147
摘要： PROBLEM TO BE SOLVED: To miniaturize a head having a structure in which a drive signal is applied to a drive element by using a flexible printed substrate. SOLUTION: This image forming apparatus comprises piezoelectric elements 12, 12 forming a drive element row having, arranged therein, a drive piezoelectric element pillars 12A for generating energy for ejecting a liquid droplet from a nozzle 4, a plurality of FPCs 15, 15 for inputting signals to the plurality of drive element rows, and a circuit substrate 24 having input terminals 21, 21 of the FPCs 15, 15 connected thereto. A surface of the circuit substrate 24 is perpendicular to a nozzle face and the circuit substrate 24 is parallel to a long side direction of the head and is disposed within a width of the nozzle face in a short side direction of the head. The FPCs 15, 15 are arranged to be opposed to each other with the circuit substrate 24 therebetween. The input terminals 21, 21 connected to one circuit substrate 24 are disposed so as not to be opposed to each other in the facing direction. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过使用柔性印刷基板将具有驱动信号施加到驱动元件的结构的头部小型化。该图像形成装置包括形成驱动元件列的压电元件12,12，其中布置有用于产生从喷嘴4喷射液滴的能量的驱动压电元件柱12A，多个FPC 15， 15，用于向多个驱动元件行输入信号;以及电路基板24，其具有与其连接的FPC 15,15的输入端子21,21。电路基板24的表面垂直于喷嘴面，电路基板24平行于头部的长边方向，并且在头部的短边方向上设置在喷嘴面的宽度内。 FPC 15,15被布置成彼此相对，电路基板24在它们之间。连接到一个电路基板24的输入端子21,21被设置成在相对的方向上彼此不相对。版权所有（C）2009，JPO＆INPIT

9. 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

10. 发明专利

JP2005007779A Ink jet head, ink cartridge and ink jet recorder 审中-公开
标题翻译：墨水喷头，墨盒和喷墨记录仪
公开(公告)号：JP2005007779A
公开(公告)日：2005-01-13
申请号：JP2003175712
申请日：2003-06-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMANAKA KUNIHIRO
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To provide an ink jet head capable of printing high-quality images stably in high speed and excellent in mass productivity. SOLUTION: The ink jet head comprises a nozzle plate with a plurality of nozzles, a passage plate which composes a plurality of pressurized liquid chambers, a vibrating plate, a laminated piezoelectric element 2 which is connected with the vibrating plate and changes the pressure in the pressurized liquid chambers, a supporting substrate 1 to which one end of the piezoelectric element 2 is joined, and a frame member 7. The ink jet head has a great number of nozzles and is long. The supporting substrate 1 is fixed to the frame member 7 by a coupling member 11 composed of an adhesive. Adhesive fixing regions between the supporting substrate 1 and the frame member 7 are positioned at both ends in the width direction and at both ends in the longitudinal direction of the supporting substrate 1, thereby suppressing the vibration of an ink jet head in the low-frequency region (at 10 kHz or below) and obtaining an ink jet head excellent in mass productivity and capable of printing high-quality images stably in high speed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够高速稳定地印刷高品质图像并且具有优异的批量生产率的喷墨头。解决方案：喷墨头包括具有多个喷嘴的喷嘴板，构成多个加压液体室的通道板，振动板，与振动板连接的层叠压电元件2，加压液体室中的压力，压电元件2的一端接合的支撑基板1和框架构件7.喷墨头具有大量喷嘴并且长。支撑基板1通过由粘合剂构成的联接构件11固定到框架构件7。支撑基板1和框架部件7之间的粘合剂固定区域位于支撑基板1的宽度方向和长度方向两端的两端，从而抑制低频下的喷墨头的振动区域（10kHz以下），得到质量生产性优异的喷墨头，能够高速稳定地印刷高质量的图像。版权所有（C）2005，JPO＆NCIPI

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