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1. 发明授权

US4443097A Exposure value control system for copying machines 失效
标题翻译：复印机曝光值控制系统
公开(公告)号：US4443097A
公开(公告)日：1984-04-17
申请号：US294140
申请日：1981-08-19
申请人： Kiyoto Nagasawa , Hiroshi Yamada
发明人： Kiyoto Nagasawa , Hiroshi Yamada
IPC分类号： G03B27/00 , G03B27/54 , G03B27/72 , G03G15/04 , G03G15/043
CPC分类号： G03B27/72 , G03B27/542
摘要： An exposure value control system for a copying machine of the narrow slit exposure type in which a fluorescent lamp and a fiber lens array are used as a source of light and an imaging optical system, respectively. This exposure value control system comprises a lighting device for the fluorescent lamp, a manually-adjustable D-C voltage generator, and control means for electrically controlling a lamp current supplied from the lighting device to the fluorescent lamp in dependence upon the D-C voltage from the generator.
摘要翻译：分别使用荧光灯和光纤透镜阵列作为光源和成像光学系统的窄狭缝曝光型复印机的曝光值控制系统。该曝光值控制系统包括用于荧光灯的照明装置，可手动调节的D-C电压发生器，以及用于根据来自发生器的D-C电压将从照明装置供应的灯电流电控制到荧光灯的控制装置。

2. 发明授权

US4967284A Image forming apparatus and method of controlling output of semiconductor laser 失效
标题翻译：控制半导体激光器输出的图像形成装置和方法
公开(公告)号：US4967284A
公开(公告)日：1990-10-30
申请号：US258599
申请日：1988-10-17
申请人： Yoshiki Yoshida , Kenichirou Asada , Kiyoto Nagasawa
发明人： Yoshiki Yoshida , Kenichirou Asada , Kiyoto Nagasawa
IPC分类号： G06K15/12 , H04N1/407
CPC分类号： H04N1/4076 , G06K15/1219 , G06K15/129
摘要： An image forming apparatus has a control device for controlling an optical output of a semiconductor laser. An operation of controlling the optical output is started with a timing before an incoming signal which indicates an effective image region in a sub scanning direction of a photosensitive body and responsive to a timing signal (or power check start signal) having a predetermined period.
摘要翻译：图像形成装置具有用于控制半导体激光器的光输出的控制装置。控制光输出的操作以指示感光体的副扫描方向上的有效图像区域的输入信号之前的定时开始，并响应于具有预定周期的定时信号（或功率检查开始信号）。

3. 发明授权

US4905022A Image forming apparatus having laser light source 失效
标题翻译：具有激光光源的图像形成装置
公开(公告)号：US4905022A
公开(公告)日：1990-02-27
申请号：US329808
申请日：1989-03-28
申请人： Kiyoto Nagasawa
发明人： Kiyoto Nagasawa
IPC分类号： B41J2/44 , G06K15/12 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/23 , H04N1/405
CPC分类号： H04N1/4056 , H04N1/053 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04767
摘要： An image forming apparatus comprising a photosensitive body, a scanner including a laser light source for scanning the photosensitive body by a laser beam emitted from the laser light source, a modulation circuit for pulse-width-modulating or pulse-number-modulating the laser beam by an input digital image data which is synchronized to a clock signal, and a driving circuit for driving the laser light source by an output modulated image data of the modulation circuit. The modulation circuit includes a high-speed clock generator for generating a high-frequency clock signal which has a frequency higher than the clock signal, a counter for counting pulses of the high-frequency clock signal, a resetting circuit for resetting the counter when a counted value reaches a predetermined value, and a pulse signal generator for generating as the modulated image data a pulse signal having a pulse width or number dependent on the input digital image data and the counted value of the counter.
摘要翻译：一种图像形成装置，包括感光体，扫描仪，包括用于通过从激光光源发射的激光束扫描感光体的激光源，用于对激光束进行脉宽调制或脉冲编号调制的调制电路通过与时钟信号同步的输入数字图像数据和用于通过调制电路的输出调制图像数据驱动激光光源的驱动电路。调制电路包括：高速时钟发生器，用于产生频率高于时钟信号的高频时钟信号;计数器，用于计数高频时钟信号的脉冲;复位电路，用于当a 计数值达到预定值，以及脉冲信号发生器，用于产生具有取决于输入数字图像数据的脉冲宽度或数量的脉冲信号和计数器的计数值作为调制图像数据。

4. 发明授权

US5027117A Conversion using a variable reference based on image density 失效
标题翻译：使用基于图像密度的变量引用进行转换
公开(公告)号：US5027117A
公开(公告)日：1991-06-25
申请号：US328454
申请日：1989-03-24
申请人： Yoshiki Yoshida , Kiyoto Nagasawa , Yoshinobu Kagami
发明人： Yoshiki Yoshida , Kiyoto Nagasawa , Yoshinobu Kagami
IPC分类号： H03M1/18 , H04N1/40 , H04N1/401
CPC分类号： H03M1/182 , H04N1/40 , H04N1/401
摘要： An apparatus for converting an analog image signal to a digital image signal based on a reference voltage, includes a counter having a control terminal, for counting a first signal and outputting a counted value in digital form, a D/A converter for converting the counted value to an analog voltage signal served as the reference voltage, an A/D converter for converting the analog image signal to the digital image signal based on the reference voltage generated by the D/A converter, and a comparator for comparing in magnitude the digital image signal and a threshold level used for limiting the magnitude of the digital image signal, thereby outputting a control signal based on the results of comparison. The counter continues to count the first signal until the control signal derived from the comparator is supplied to the control terminal of the counter.
摘要翻译：一种用于基于参考电压将模拟图像信号转换为数字图像信号的装置包括具有用于对第一信号进行计数并输出数字形式的计数值的控制端的计数器，用于转换计数的D / A转换器值作为参考电压的模拟电压信号; A / D转换器，用于根据由D / A转换器产生的参考电压将模拟图像信号转换为数字图像信号;以及比较器，用于在幅度上比较数字图像信号和用于限制数字图像信号的幅度的阈值电平，从而基于比较结果输出控制信号。计数器继续计数第一信号，直到从比较器得到的控制信号提供给计数器的控制端。

5. 发明授权

US4951160A Image reproducing apparatus 失效
标题翻译：图像再现装置
公开(公告)号：US4951160A
公开(公告)日：1990-08-21
申请号：US374783
申请日：1989-07-03
申请人： Yasumori Nagahara , Kenichirou Asada , Takanobu Fujioka , Yoshiaki Kanmoto , Mitsuo Hasebe , Kiyoto Nagasawa , Akio Katsumata , Setsuo Soga
发明人： Yasumori Nagahara , Kenichirou Asada , Takanobu Fujioka , Yoshiaki Kanmoto , Mitsuo Hasebe , Kiyoto Nagasawa , Akio Katsumata , Setsuo Soga
IPC分类号： G03B21/132 , G03G15/00 , G03G15/01 , G03G15/04 , G03G15/043 , G03G15/20 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/23 , H04N1/29
CPC分类号： H04N1/2369 , H04N1/00931 , H04N1/053 , H04N1/295 , G03G2215/2045 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04786
摘要： An image forming apparatus includes a fixing speed setting unit for selectively setting the fixing speed in accordance with a desired mode of operation, a fixing unit for fixing a reproduced image of an original formed on a image forming medium at a variable fixing speed in accordance with the fixing speed setting unit, and a scanning unit provided with opto-electrical elements arranged in one line extended laterally to a predetermined scanning direction for optically receving an image of the original through the opto-electrical elements. The opto-electrical elements are carrying out a scanning operation in the predetermined scanning direction with varied scanning speed by changing a sweep spacing of an image data with averaging every N line of the image data in accordance with the operation mode with using every N-1 lines of the image data to reproduce the image of the original on the image forming medium.
摘要翻译：图像形成装置包括：定影速度设定单元，用于根据期望的操作模式选择性地设定定影速度;定影单元，用于按照可变定影速度固定形成在图像形成介质上的原稿的再现图像，定影速度设定单元，以及扫描单元，其具有布置成一行的光电元件，横向延伸到预定扫描方向，以通过光电元件光学接收原稿的图像。光电元件通过使用每个N-1根据操作模式改变图像数据的每N行平均的图像数据的扫描间隔，以不同的扫描速度在预定的扫描方向上进行扫描操作用于在图像形成介质上再现原稿的图像的图像数据的行。

6. 发明授权

US4899344A Semiconductor laser control apparatus 失效
标题翻译：半导体激光控制装置
公开(公告)号：US4899344A
公开(公告)日：1990-02-06
申请号：US279211
申请日：1988-12-02
申请人： Isamu Shibata , Takahiro Asai , Kiyoto Nagasawa , Kenichirou Asada
发明人： Isamu Shibata , Takahiro Asai , Kiyoto Nagasawa , Kenichirou Asada
IPC分类号： G06K15/12 , H01S5/0683 , H04N1/40
CPC分类号： H04N1/40043 , G06K15/1214 , H01S5/0683 , H04N1/40037 , H04N1/4005
摘要： A semiconductor laser control apparatus for controlling an optical output of a semiconductor laser to a predetermined value comprises a switching part coupled in series with the semiconductor laser and controlled by an N-bit image signal, N constant current supply circuits coupled in parallel to each other and in series with the switching part for supplying currents to the switching part so that a driving current is supplied to the semiconductor laser from the switching part, a detector for detecting the optical output of the semiconductor laser and for outputting a detection signal indicative of the detected optical output, and a control part responsive to the detection signal from the detector for controlling the driving current by controlling the N constant current supply circuits so that the optical output of the semiconductor laser becomes the predetermined value.
摘要翻译：用于将半导体激光器的光输出控制到预定值的半导体激光器控制装置包括与半导体激光器串联耦合并由N位图像信号控制的开关部分，并联耦合的N个恒流源电路并且与用于向开关部供给电流的开关部分串联，以便从开关部件向半导体激光器提供驱动电流;检测器，用于检测半导体激光器的光输出并输出表示该半导体激光器的检测信号检测光输出，以及控制部分，响应来自检测器的检测信号，通过控制N个恒流源电路来控制驱动电流，使得半导体激光器的光输出变为预定值。

7. 发明授权

US4360783A Lamp power regulator 失效
标题翻译：灯泡功率调节器
公开(公告)号：US4360783A
公开(公告)日：1982-11-23
申请号：US210078
申请日：1980-11-24
申请人： Kiyoto Nagasawa , Yuzi Narumi
发明人： Kiyoto Nagasawa , Yuzi Narumi
IPC分类号： G05F1/10 , G03G15/00 , G05F1/455 , G05F1/66 , H05B39/08 , G06G7/20
CPC分类号： G03G15/80 , G05F1/66 , H05B39/08
摘要： An effective voltage across a load such a lamp (L) is squared by means of a field effect transistor (FET) to produce an output voltage which varies in proportion to the power through the load (L). A trigger phase of a thyristor (TRC) connected between an A.C. power source (PS) and the load (L) is automatically varied in such a manner that the output voltage and thereby the power through the lamp (L) are regulated to a desired value.
摘要翻译：通过场效应晶体管（FET）使诸如灯（L）的负载两端的有效电压平方，以产生与通过负载（L）的功率成比例地变化的输出电压。连接在AC电源（PS）和负载（L）之间的晶闸管（TRC）的触发相位自动地变化，使得输出电压以及由此通过灯（L）的功率被调节到期望的值。

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