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1. 发明授权

US06450615B2 Ink jet printing apparatus and method using a pressure generating device to induce surface waves in an ink meniscus 失效
标题翻译：喷墨打印装置和使用压力产生装置在油墨弯液面中诱发表面波的方法
公开(公告)号：US06450615B2
公开(公告)日：2002-09-17
申请号：US09026335
申请日：1998-02-19
申请人： Ryuichi Kojima , Yasuhiro Otsuka , Torahiko Kanda , Fuminori Takizawa , Masakazu Okuda , Hirofumi Nakamura
发明人： Ryuichi Kojima , Yasuhiro Otsuka , Torahiko Kanda , Fuminori Takizawa , Masakazu Okuda , Hirofumi Nakamura
IPC分类号： B41J2135
CPC分类号： B41J2/04528 , B41J2/04563 , B41J2/04581 , B41J2/14274 , B41J2/1433 , B41J2202/11
摘要： Characteristics of a droplet ejection apparatus are change depending on the shape or cone angle of the main ink ejection chamber of the apparatus, or on the diameter of the ejection aperture of main ink ejection chamber. Accordingly, operation of the droplet ejection apparatus varies with the shape, angle, or diameter of main ink ejection chamber. The shape of the aperture according to the present invention is circular or regular polygonal so that surface waves are synthesized at the central portion of the ejection aperture. Moreover, the cone angle of the main chamber is set to 65° or less from the plane vertical to the droplet ejecting direction and the diameter of the ejection aperture is set to a value 1.25 times or more larger than a desired droplet diameter.
摘要翻译：液滴喷射装置的特征根据装置的主喷墨室的形状或锥角，或主喷墨室的喷射孔的直径而变化。因此，液滴喷射装置的操作随主喷墨室的形状，角度或直径而变化。根据本发明的孔的形状是圆形或正多边形，使得在喷射孔的中心部分处合成表面波。此外，主室的锥角从垂直于液滴喷射方向的平面设定为65°以下，喷射孔的直径设定为比期望的液滴直径大1.25倍以上的值。

2. 发明授权

US06347854B1 Image recording device capable of preventing deviation of ink dot on recording medium 有权
标题翻译：能够防止墨点在记录介质上的偏差的图像记录装置
公开(公告)号：US06347854B1
公开(公告)日：2002-02-19
申请号：US09570919
申请日：2000-05-15
申请人： Masakazu Okuda , Fuminori Takizawa , Yasuhiro Otsuka , Torahiko Kanda
发明人： Masakazu Okuda , Fuminori Takizawa , Yasuhiro Otsuka , Torahiko Kanda
IPC分类号： B41J2205
CPC分类号： B41J2/04573 , B41J2/0458 , B41J2/04591 , B41J2/04593 , B41J2/2128
摘要： In an image recording device which records an image on a recording medium responsive to a desired gradation in each pixel and which includes a recording head for jetting an ink droplet having a diameter at a timing therefrom, the diameter of the ink droplet is modulated in response to the desired gradation in each pixel while the timing is modulated dependent on the modulated diameter. Thus, a position of impact of the ink droplet is not deviated, so that quality of image is not deteriorated.
摘要翻译：在图像记录装置中，响应于每个像素中的期望灰度记录在记录介质上的图像，并且包括用于在其时刻喷射直径的墨滴的记录头，响应于墨滴的直径到每个像素期望的灰度，同时根据调制的直径调制定时。因此，墨滴的冲击位置不会偏离，图像质量不会变差。

3. 发明授权

US06692103B2 Ink jet recording head 失效
标题翻译：喷墨记录头
公开(公告)号：US06692103B2
公开(公告)日：2004-02-17
申请号：US10140621
申请日：2002-05-07
申请人： Masakazu Okuda , Yasuhiro Otsuka
发明人： Masakazu Okuda , Yasuhiro Otsuka
IPC分类号： B41J2145
CPC分类号： B41J2/1634 , B41J2/1433 , B41J2/162 , B41J2/1623 , B41J2002/14459 , B41J2002/14475 , B41J2202/11
摘要： An ink jet recording head wherein a nozzle jetting ink droplets is structured of a plurality of ink jet ports 11, and the length ln [m] of an ink jet port and pitch Pn [m] are set to satisfy the conditions ln>1.2 Vd/An and Pn>1.4 dd (where Vd is the volume of ink droplets that are jetted from one individual ink jet port [m3], dd is diameter of an ink droplet [m] and An is the area of a nozzle opening [m2]); wherein the fusion phenomena of a meniscus at the rear surface of a nozzle after ink is jetted can be suppressed; and wherein the effect of a multi-port nozzle enabling re-fill time to be reduced is utilized. Further the fusion phenomena of ink jet droplets in flight after being jet expelled from a multi-port nozzle can be suppressed enabling superior quality images to be recorded.
摘要翻译：一种喷墨记录头，其中喷射喷墨墨滴的喷嘴由多个喷墨口11构成，喷墨口的长度ln [m]和间距Pn [m]设定为满足条件ln> 1.2 Vd / An和Pn> 1.4dd（其中Vd是从一个单独的喷墨口喷射的墨滴的体积[m 3]，dd是墨滴的直径[m]，并且An是喷嘴的面积开[m 2]）; 其中喷墨后喷嘴后表面上的弯液面的熔化现象可被抑制; 并且利用能够减少再填充时间的多口喷嘴的效果。此外，可以抑制喷射从多口喷嘴排出的飞行中的喷墨液滴的融合现象，从而能够记录优质的图像。

4. 发明授权

US06550897B2 Inkjet recording head and recording apparatus using the same 有权
公开(公告)号：US06550897B2
公开(公告)日：2003-04-22
申请号：US10022938
申请日：2001-12-18
申请人： Hirofumi Nakamura , Masakazu Okuda , Yasuhiro Otsuka
发明人： Hirofumi Nakamura , Masakazu Okuda , Yasuhiro Otsuka
IPC分类号： B41J2045
CPC分类号： B41J2/14233 , B41J2002/14419 , B41J2002/14459 , B41J2002/14491
摘要： An inkjet recording head allowing a high driving efficiency and preventing a variation in the driving efficiency is disclosed. An piezoelectric actuator is provided for each ink nozzle and has a driving section disposed in an area of an ink pressure chamber, an electrode pad section, and at least one bridge section connecting the driving section and the electrode pad section. The pressure chamber has a plane shape having an aspect ratio approximately equal to 1, and the bridge section has a width of a connection area to the driving section set smaller than a width of a connection side of the driving section.

5. 发明授权

US06682175B2 Ink jet recording head and ink jet recording apparatus 失效
标题翻译：喷墨记录头和喷墨记录装置
公开(公告)号：US06682175B2
公开(公告)日：2004-01-27
申请号：US10230363
申请日：2002-08-29
申请人： Yasuhiro Otsuka , Kazuhiko Hayashi , Toshinori Ishiyama , Masakazu Okuda
发明人： Yasuhiro Otsuka , Kazuhiko Hayashi , Toshinori Ishiyama , Masakazu Okuda
IPC分类号： B41J204
CPC分类号： B41J2/055 , B41J2002/14419 , B41J2002/14459
摘要： In an ink jet recording head, an ink pool has a main flow path communicating with an ink supply port and a plurality of branch flow paths branching from the main flow path. Each ejector has a pressure chamber, a pressure generating unit and a nozzle. The pressure chamber communicates with the corresponding one of the branch flow paths. The pressure generating unit generates a pressure wave in ink charged into the pressure chamber. The nozzle ejects the ink from the pressure chamber compressed by the pressure wave. At least one wall surface forming each of the branch flow paths is formed of a damper member elastically deformable in accordance with the change of pressure in the branch flow path.
摘要翻译：在喷墨记录头中，墨水池具有与供墨口连通的主流路和从主流路分支的多个分支流路。每个喷射器具有压力室，压力发生单元和喷嘴。压力室与相应的一个分支流路连通。压力产生单元产生加压到压力室中的油墨中的压力波。喷嘴从由压力波压缩的压力室喷出墨水。形成每个分支流动路径的至少一个壁表面由根据分支流动路径中的压力变化可弹性变形的阻尼器构件形成。

6. 发明授权

US06305792B1 Ink jet recording head 失效
标题翻译：喷墨记录头
公开(公告)号：US06305792B1
公开(公告)日：2001-10-23
申请号：US09292327
申请日：1999-04-15
申请人： Yasuhiro Otsuka , Torahiko Kanda , Masakazu Okuda , Fuminori Takizawa
发明人： Yasuhiro Otsuka , Torahiko Kanda , Masakazu Okuda , Fuminori Takizawa
IPC分类号： B41S2045
CPC分类号： B41J2/1404 , B41J2/14274 , B41J2002/14387 , B41J2002/14459 , B41J2002/14467
摘要： In order to reduce a manufacturing cost of an ink jet type recording head by simplifying a structure of the ink jet type recording head and reducing the number of manufacturing steps thereof, to provide a capacity of an ink pool without increasing a size thereof, to make the freedom of nozzle layout high and to make the freedom of design by reducing a restriction on position and number of ink supply ports, the ink pool to which ink is supplied is formed in a rear surface of a nozzle plate having a front surface formed with a plurality of nozzles and an ink chamber plate is attached to the rear surface of the nozzle plate through discrete partition walls each defining a discrete space communicating with different one of the nozzles.
摘要翻译：为了通过简化喷墨式记录头的结构并减少其制造步骤的数量来降低喷墨式记录头的制造成本，提供墨水池的容量而不增加其尺寸，以使喷嘴布局自由度高，通过减少供墨口的位置和数量来限制设计的自由度，在具有形成有前面的喷嘴板的后表面中形成有供应墨的墨水池多个喷嘴和墨室板通过离散的分隔壁附接到喷嘴板的后表面，每个分隔壁限定与不同喷嘴之间连通的离散空间。

7. 发明授权

US6154228A Image recording device capable of preventing deviation of ink dot on recording medium 有权
标题翻译：能够防止墨点在记录介质上的偏差的图像记录装置
公开(公告)号：US6154228A
公开(公告)日：2000-11-28
申请号：US135407
申请日：1998-08-18
申请人： Masakazu Okuda , Fuminori Takizawa , Yasuhiro Otsuka , Torahiko Kanda
发明人： Masakazu Okuda , Fuminori Takizawa , Yasuhiro Otsuka , Torahiko Kanda
IPC分类号： B41J2/045 , B41J2/05 , B41J2/055 , B41J2/205 , B41J2/21
CPC分类号： B41J2/04573 , B41J2/0458 , B41J2/04591 , B41J2/04593 , B41J2/2128
摘要： In an image recording device which records an image on a recording medium responsive to a desired gradation in each pixel and which includes a recording head for jetting an ink droplet having a diameter at a speed therefrom, the diameter of the ink droplet is modulated in response to the desired gradation in each pixel while the speed is modulated dependent on the modulated diameter. Thus, a position of impact of the ink droplet is not deviated, so that quality of image is not deteriorated.
摘要翻译：在图像记录装置中，响应于每个像素中的所需灰度记录图像在记录介质上，并且包括用于喷射直径为其速度的墨滴的记录头，响应于墨滴的直径到每个像素中的期望灰度，同时根据调制的直径来调制速度。因此，墨滴的冲击位置不会偏离，图像质量不会变差。

8. 发明授权

US5710966A Cleaning device for removing non-transferred toner 失效
标题翻译：用于清除未转印墨粉的清洁装置
公开(公告)号：US5710966A
公开(公告)日：1998-01-20
申请号：US550305
申请日：1995-10-30
申请人： Yasuhiro Otsuka , Masakazu Okuda
发明人： Yasuhiro Otsuka , Masakazu Okuda
IPC分类号： B41J2/39 , G03G15/05 , G03G15/32 , G03G21/00 , G03G21/10
CPC分类号： G03G21/0005 , G03G15/32
摘要： A cleaning device includes a removing portion and a heater. The removing portion removes a toner held by an electrostatic force on a first surface of a latent image charge holding member. The latent image charge holding member includes a pyroelectric layer having a first surface on which the toner is deposited. The heater heats the pyroelectric layer to reduce the electrostatic force attracting the toner to the first surface of the pyroelectric layer, and the removing portion thereby removes the toner from the latent image charge holding member. In another embodiment of the cleaning device, the heater is incorporated in the removing portion which is a blade. In still another embodiment the cleaning device includes a heater and an ultrasonic vibrator is used as the removing portion.
摘要翻译：清洁装置包括去除部分和加热器。去除部分去除在静电荷电荷保持部件的第一表面上由静电力保持的调色剂。潜像电荷保持部件包括具有沉积有调色剂的第一表面的热电层。加热器加热热电层以减少吸引调色剂到热电层的第一表面的静电力，并且去除部分从而从潜像电荷保持部件移除调色剂。在清洁装置的另一个实施例中，加热器被结合在作为叶片的去除部分中。在另一个实施例中，清洁装置包括加热器，超声波振动器用作去除部分。

9. 发明授权

US5660486A Image printing apparatus and image printing method 失效
标题翻译：图像打印装置和图像打印方法
公开(公告)号：US5660486A
公开(公告)日：1997-08-26
申请号：US447798
申请日：1995-05-23
申请人： Masakazu Okuda , Yasuhiro Otsuka
发明人： Masakazu Okuda , Yasuhiro Otsuka
IPC分类号： G03G15/32 , B41J2/36
CPC分类号： G03G15/32 , G03G15/321
摘要： An image printing device includes a latent image charge keeping medium including a pyroelectric layer, a thermal head for selectively heating the charge keeping medium according to a signal, and an electrically conductive film disposed to be brought into contact with or to be in the vicinity of a surface of the pyroelectric layer of the medium for being heated by the thermal head, thereby neutralizing charge appearing on the medium due to pyroelectric effect. The device further includes a developer for visualizing with a charged coloring medium an electrostatic latent image formed on the medium, a transfer roller for transferring the developed image onto a sheet of printing paper, and a fixing device for fixing the transferred image on the printing sheet. The conductive layer is applied with a bias voltage from a power source such that a strong absorbing force acts upon charge, thereby efficiently neutralizing the charge. There are attained a high printing density and a favorable uniformity in the printing density.
摘要翻译：一种图像打印装置包括：包含热电层的潜像保压介质，用于根据信号选择性地加热保压介质的热敏头;以及导电膜，其被设置成接触或靠近介质的热电层的表面由热敏头加热，从而中和由于热电效应而在介质上出现的电荷。该装置还包括显影剂，用于使带电着色介质可视化形成在介质上的静电潜像，用于将显影图像转印到一张打印纸上的转印辊和用于将转印图像固定在打印纸上的定影装置。导电层被施加来自电源的偏置电压，使得强吸收力作用于电荷，从而有效地中和电荷。印刷密度高，印刷密度均匀性好。

10. 发明授权

US5812030A Amplifier device capable of carrying out a stable amplifying operation without a gain variation 失效
标题翻译：能够进行稳定的放大运算而没有增益变化的放大器装置
公开(公告)号：US5812030A
公开(公告)日：1998-09-22
申请号：US666199
申请日：1996-06-20
申请人： Daijiro Inami , Yasuhiro Otsuka
发明人： Daijiro Inami , Yasuhiro Otsuka
IPC分类号： H03G3/20 , H03F3/08 , H03G3/30 , H03G5/16 , H04B10/07 , H04B10/291 , H04B10/40 , H04B10/50 , H04B10/60 , H04B10/69 , H04B10/06
CPC分类号： H03F3/082 , H03G3/3084 , H04B10/6931
摘要： An amplifier section is supplied with an electric signal outputted from a light-sensitive detector. The amplifier section comprises an amplifying circuit for amplifying the electric signal into an amplified signal having an amplified level. A producing section produces a control signal on the basis of the amplified signal and a reference voltage. A resistor section is connected to the amplifying circuit in parallel. The resistor section has a variable resistance which is varied in accordance with the control signal. A capacitor section has a capacitor and connects the input of the amplifying circuit and the output of the amplifying circuit through the capacitor in response to the control signal.
摘要翻译：向放大器部分提供从光敏检测器输出的电信号。放大器部分包括用于将电信号放大为具有放大电平的放大信号的放大电路。产生部分根据放大的信号和参考电压产生控制信号。电阻部分并联连接到放大电路。电阻器部分具有根据控制信号而变化的可变电阻。电容器部分具有电容器，并且响应于控制信号，通过电容器连接放大电路的输入端和放大电路的输出端。

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