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公开(公告)号：US4909279A
公开(公告)日：1990-03-20
申请号：US377766
申请日：1989-07-10
申请人： Ichiro Nakamura , Katsuharu Shuto , Eiichi Sasaki
发明人： Ichiro Nakamura , Katsuharu Shuto , Eiichi Sasaki
CPC分类号： B66B1/24 , Y10T137/87177 , Y10T137/87861 , Y10T137/87893
摘要： In a fluid control valve, a check valve is provided between the pump port and the first fluid chamber and allows the fluid to pass therethrough only in a direction from the pump port to the first fluid chamber, a down control valve is provided between the first fluid chamber and the second fluid chamber, an up control valve is provided between the first fluid chamber and the third fluid chamber, the fluid is allowed to flow from the pump port to the cylinder port through the check valve and through the down control valve when they are opened, and the fluid from the cylinder port to the tank port is allowed to flow through the down control valve, through the first fluid chamber and through the up control valve when they are opened. The fluid control valve can be obtained simple in structure and high in precision, and be allowed a reduction in cavitation and noise.
摘要翻译： 在流体控制阀中，止回阀设置在泵口和第一流体室之间，并且允许流体仅在从泵口到第一流体室的方向上通过，下降控制阀设置在第一 流体室和第二流体室，在第一流体室和第三流体室之间设置有上调控制阀，通过止回阀和通过下降控制阀允许流体从泵口流到气缸端口， 它们被打开，并且允许从气缸端口到罐口的流体通过下压控制阀通过第一流体室并且当它们打开时通过上调控制阀。 流体控制阀的结构简单，精度高，可以减少气蚀和噪音。
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公开(公告)号：US6118557A
公开(公告)日：2000-09-12
申请号：US989661
申请日：1997-12-12
IPC分类号： G03G15/00 , G03G15/01 , G03G15/04 , G03G21/00 , G03G21/14 , H04N1/40 , H04N1/407 , H04N1/60 , G03B27/80 , H04N1/21 , H04N1/46
CPC分类号： H04N1/40006 , G03G15/01 , H04N1/4078 , H04N1/6033 , H04N1/6091 , G03G2215/00042 , G03G2215/00063 , G03G2215/00084 , G03G2215/0177
摘要： In a color image forming apparatus, a test pattern is formed by a color toner and provided with multiple tones by a dither method. The toner density of the test pattern is accurately read by a simple structure and faithfully corresponds to the actual toner density.
摘要翻译： 在彩色图像形成装置中，通过彩色调色剂形成测试图案，并通过抖动法提供多个色调。 通过简单的结构准确地读取测试图案的调色剂浓度，并忠实地对应于实际的调色剂浓度。
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公开(公告)号：US6014499A
公开(公告)日：2000-01-11
申请号：US801111
申请日：1997-02-14
申请人： Eiichi Sasaki
发明人： Eiichi Sasaki
CPC分类号： H04N1/4057 , H04N1/407
摘要： An image forming apparatus which forms an image by dot images. The invention includes a halftoning device for processing of halftone for inputted image data, a judging device for judging characteristics in the neighborhood of a target dot output from the halftoning means, gamma correcting means for correcting the gamma characteristic of image data of the target dot according to the judging by the judging device. Therefore, it is possible to prevent image degradation and to decrease a number of levels of halftone of the printed image.
摘要翻译： 一种通过点图像形成图像的图像形成装置。 本发明包括用于处理输入图像数据的半色调的半色调装置，用于判断从半色调装置输出的目标点附近的特性的判断装置，用于校正目标点的图像数据的伽马特性的伽马校正装置， 由判断装置判断。 因此，可以防止图像劣化并且减少打印图像的半色调的数量。
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公开(公告)号：US5821970A
公开(公告)日：1998-10-13
申请号：US686140
申请日：1996-07-24
申请人： Eiichi Sasaki , Yutaka Shio
发明人： Eiichi Sasaki , Yutaka Shio
CPC分类号： H04N1/047 , G03G15/0121 , G03G15/0152 , G03G15/0173 , G03G2215/0174 , H04N1/1135 , H04N1/12 , H04N2201/04731 , H04N2201/04789
摘要： In a color image forming apparatus, a plurality of color images of component colors are combined to form a full color image. These images of the component colors are overlapped on an intermediate recording medium, and are then transferred to a transfer medium. Control circuitry reduces the amount of time required to form the component color images on the intermediate transfer medium, and to prevent an abnormality such as an out-of-phase or pull-out of a closed loop control circuit for controlling such a formation of the component color images. This may be achieved by abruptly changing a phase of a motor synchronizing signal. Further, for a period of time after the motor synchronizing signal is abruptly changed, a gain of an amplifier in the motor control circuit can be reduced, an abnormality detection in the motor control circuit can be reduced, the motor control circuit can be placed in an open loop state, or an addition or subtraction signal can be input to the closed loop motor control circuit. This specified period can also be detected based on a feedback including a rotational phase of a polygon motor formed as part of a unit for writing the individual component color image signals.
摘要翻译： 在彩色图像形成装置中，组合颜色的多个彩色图像被组合以形成全色图像。 这些分量颜色的图像重叠在中间记录介质上，然后被转印到转印介质上。 控制电路减少在中间转印介质上形成分量彩色图像所需的时间量，并且防止诸如闭环控制电路的异相或拉出之类的异常以控制这种形成 分量彩色图像。 这可以通过突然改变电动机同步信号的相位来实现。 此外，在马达同步信号突然变化之后的一段时间内，可以减小马达控制电路中的放大器的增益，可以减少马达控制电路中的异常检测，马达控制电路可以放置在 开环状态或加法或减法信号可以输入到闭环电动机控制电路。 也可以基于包括形成为用于写入各个分量彩色图像信号的单元的一部分的多边形电动机的旋转相位的反馈来检测该指定时间。
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25.发明授权Image forming apparatus having automatic image density adjustment function against dot size variation 失效具有针对点尺寸变化的自动图像浓度调整功能的图像形成装置
公开(公告)号：US5805192A
公开(公告)日：1998-09-08
申请号：US715613
申请日：1996-09-18
申请人： Eiichi Sasaki , Kouichi Irie
发明人： Eiichi Sasaki , Kouichi Irie
CPC分类号： G03G15/5033 , H04N1/40037 , H04N1/4005 , H04N1/4076 , G03G2215/00042 , G03G2215/0177
摘要： An image forming apparatus which automatically adjusts an image density when at least one of conditions of an optical writing operation, including a size of a dot image, a light strength of a laser beam, a mode of image resolution, and a scanning speed of the laser beam, is changed. When an instruction by an operator for changing the conditions of the optical writing operation is input, an optical writing controller executes a change of the conditions and a process controller then executes an operation of determining a development potential and associated bias potentials on the basis of the changed conditions of the optical writing operation. In the operation of determining a development potential and associated bias potentials, a predetermined reference dot image is written on a photoconductor by a laser beam under the changed condition of the optical writing operation and is developed with color toner under the determined development potential and associated bias potentials. The created reference dot image is then measured by a photosensor to calculate a degree of image density. On the basis of the measurement of the image density, the determined development potential and associated bias potentials are corrected to be appropriate.
摘要翻译： 一种图像形成装置，当包括点图像的尺寸，激光束的光强度，图像分辨率的模式以及扫描速度的光学写入操作的条件中的至少一个时，自动调整图像浓度 激光束，改变了。 当输入用于改变光学写入操作的条件的操作者的指令时，光学写入控制器执行条件的改变，并且处理控制器然后基于该写入操作执行确定显影电位和相关联的偏置电位的操作 光学写入操作的条件改变。 在确定显影电位和相关的偏置电位的操作中，在光学写入操作的变化的条件下，通过激光束将预定的参考点图像写入光电导体，并且在确定的显影电位和相关偏压下用彩色调色剂显影 潜力 然后通过光电传感器测量所创建的参考点图像以计算图像密度。 基于图像密度的测量，确定的显影电位和相关的偏置电位被校正为适当的。
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公开(公告)号：US5737665A
公开(公告)日：1998-04-07
申请号：US568950
申请日：1995-12-07
IPC分类号： G03G15/00 , G03G15/01 , G03G15/04 , G03G21/00 , G03G21/14 , H04N1/40 , H04N1/407 , H04N1/60 , G03G15/02 , G03G15/06
CPC分类号： H04N1/40006 , G03G15/01 , H04N1/4078 , H04N1/6033 , H04N1/6091 , G03G2215/00042 , G03G2215/00063 , G03G2215/00084 , G03G2215/0177
摘要： In a color image forming apparatus, a test pattern is formed by a color toner and provided with multiple tones by a dither method. The toner density of the test pattern is accurately read by a simple structure and faithfully corresponds to the actual toner density.
摘要翻译： 在彩色图像形成装置中，通过彩色调色剂形成测试图案，并通过抖动法提供多个色调。 通过简单的结构准确地读取测试图案的调色剂浓度，并忠实地对应于实际的调色剂浓度。
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27.发明授权Frequency converter outputting a clock signal having a stable and accurate frequency 失效频率转换器输出具有稳定且准确的频率的时钟信号
公开(公告)号：US5608770A
公开(公告)日：1997-03-04
申请号：US305896
申请日：1994-09-14
申请人： Kouichi Noguchi , Eiichi Sasaki
发明人： Kouichi Noguchi , Eiichi Sasaki
CPC分类号： H03L7/183
摘要： A frequency converter is provided of which a frequency-dividing ratio is arbitrarily altered and retained after a power is turned off. The frequency converter has a programmable counter which outputs a signal having a desired frequency, a non-volatile memory for storing data for setting the frequency-dividing ratio and a control unit for controlling a writing operation of data stored into the non-volatile memory. The programmable counter, the non-volatile memory and the control unit are accommodated in a single package. The frequency converter may comprise a resonator and an oscillating circuit within the package so that the frequency converter can be treated as a single frequency generator such as a quartz-crystal oscillator.
摘要翻译： 提供了一种频率转换器，其在断电后任意地改变和保持分频比。 变频器具有输出具有期望频率的信号的可编程计数器，用于存储用于设定分频比的数据的非易失性存储器和用于控制存储到非易失性存储器中的数据的写入操作的控制单元。 可编程计数器，非易失性存储器和控制单元容纳在单个封装中。 变频器可以包括谐振器和封装内的振荡电路，使得变频器可以被视为单频发生器，例如石英晶体振荡器。
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公开(公告)号：US5285027A
公开(公告)日：1994-02-08
申请号：US843163
申请日：1992-02-28
CPC分类号： B66B1/24
摘要： A hydraulic elevator comprises a car, a hydraulic jack to drive the car, a hydraulic pump, and control means for controlling a flow rate of fluid flowing to or from the hydraulic jack thereby to control movement of the car. The control means comprises a main valve constructed so as to allow fluid the flow from the pump into the hydraulic jack when a pressure of the fluid is higher than a predetermined value thereby to effect upward running of the car, and to check a fluid flow from the hydraulic jack when the pressure of the fluid from the pump is less than the predetermined value, and valve control means including a plurality of pilot valves for controlling, when the pressure of the fluid from the pump is less than the value, the main valve to open and close, and wherein the valve control means controls the closing operation of the main valve along at least two different patterns.
摘要翻译： 液压升降机包括轿厢，用于驱动汽车的液压千斤顶，液压泵以及用于控制流入或流出液压千斤顶的流体流量的控制装置，从而控制汽车的运动。 控制装置包括主阀，其构造成当流体的压力高于预定值时允许流体从泵进入液压千斤顶的流体，从而实现汽车的向上运动，并且检查来自 当来自泵的流体的压力小于预定值时的液压千斤顶，并且阀控制装置包括多个先导阀，用于当来自泵的流体的压力小于该值时控制主阀 以打开和关闭，并且其中所述阀控制装置沿至少两种不同的模式控制所述主阀的关闭操作。
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公开(公告)号：US4890120A
公开(公告)日：1989-12-26
申请号：US224767
申请日：1988-07-27
申请人： Eiichi Sasaki , Takashi Mori , Tetsuo Watanabe
发明人： Eiichi Sasaki , Takashi Mori , Tetsuo Watanabe
CPC分类号： B41J2/325
摘要： A thermal transfer type printing device, for instance, a character printer having a thermal head for use in printer, copier, facsimile device, etc. and ink medium such as ink ribbon, ink sheet or the like. One of a plurality of ink sheets is selectively used and a print control is performed in accordance with a sort of the ink sheet. The printing device comprises a thermal head, ink sheets, installment means capable of selecting one of ink sheets and selectively installing the same on the printing device, a heat energy source, and switching means for changing heat energy which drives the thermal head depending on the sort of ink sheet to be selected.
摘要翻译： 热转印式打印装置，例如具有用于打印机，复印机，传真装置等的热敏打印头的字符打印机以及油墨介质，例如墨带，油墨片等。 选择性地使用多个油墨纸之一，并且根据油墨纸的种类进行打印控制。 印刷装置包括热敏头，油墨纸，能够选择油墨片中的一个并且选择性地将其安装在打印装置上的装置装置，热能源和用于改变热能的切换装置，其根据 要选择的油墨类型。
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公开(公告)号：US4675697A
公开(公告)日：1987-06-23
申请号：US788572
申请日：1985-10-17
申请人： Eiichi Sasaki , Takashi Inoue
发明人： Eiichi Sasaki , Takashi Inoue
CPC分类号： H04N1/40031 , B41J2/355
摘要： A thermal head driver for printing out images by selectively energizing a plurality of heat-generating resistance elements which are arranged in an array, or line, to constitute a thermal head. The resistance elements are energized on an every second pixel basis or, alternatively, a plurality of resistance elements associated with odd pixels and those associated with even pixels are energized at different time points, yet a plurality of resistance elements out of each of the odd and even resistance elements are energized at the same time. Such causes any pixel to be printed out only upon the lapse of a predetermiend period of time after two immediately adjacent pixels in a line direction have been printed out.
摘要翻译： 一种热敏头驱动器，用于通过选择性地激励排列成阵列或线的多个发热电阻元件来打印图像，以构成热敏头。 电阻元件在每个第二像素基础上通电，或者，与奇数像素相关联的多个电阻元件和与偶数像素相关联的多个电阻元件在不同的时间点被激励，但是在奇数和 平均电阻元件同时通电。 这样就导致只有在已经打印了在行方向上的两个紧邻的像素之后经过预定时间段时才打印输出的像素。
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