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1. 发明授权

US5105077A Laser beam scanning position detecting device having means for determining print start timing 失效
标题翻译：具有确定打印开始时间的手段的激光束扫描位置检测装置
公开(公告)号：US5105077A
公开(公告)日：1992-04-14
申请号：US561784
申请日：1990-08-01
申请人： Kenichirou Asada
发明人： Kenichirou Asada
IPC分类号： G02B26/10 , B41J2/44 , G03G15/04 , G06K15/12 , H04N1/113 , H04N1/23
CPC分类号： G06K15/1214 , G06K15/1219 , G06K15/129
摘要： A laser beam scanning position detecting device having a beam detecting element for detecting the passage of a laser beam, and determining a print start timing in response to an output signal of the beam detecting element. The print start timing is changed in response to a reference signal or externally derived data.
摘要翻译：一种激光束扫描位置检测装置，具有用于检测激光束通过的光束检测元件，并且响应于光束检测元件的输出信号确定打印开始定时。打印开始定时响应于参考信号或外部导出的数据而改变。

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

US5126761A Scanning beam output control device for an image recorder 失效
标题翻译：用于图像记录器的扫描光束输出控制装置
公开(公告)号：US5126761A
公开(公告)日：1992-06-30
申请号：US522797
申请日：1990-05-14
申请人： Kenichirou Asada
发明人： Kenichirou Asada
IPC分类号： B41J2/44 , G03G15/04 , G06K15/12 , H04N1/113 , H04N1/23 , H04N1/407
CPC分类号： G06K15/1214 , G06K15/129 , H04N1/4076
摘要： A device applicable to a laser beam printer, color printer, digital copier, facsimile machine or similar image recorder for controlling the output level of a scanning beam to a predetermined level. The device sets the output level of the scanning beam in response to data fed thereto from the outside, thereby coping with changes in image forming conditions and changes in various characteristics due to aging. The device incorporated in a color printer, for example, sets the output levels of individual laser beams in matching relation to the characteristics to individual colors.
摘要翻译：一种适用于激光束打印机，彩色打印机，数字复印机，传真机或类似图像记录器的装置，用于将扫描光束的输出电平控制到预定水平。该装置响应于从外部馈送到其中的数据设置扫描光束的输出电平，从而应对图像形成条件的变化和由于老化引起的各种特性的变化。例如，结合在彩色打印机中的装置将各个激光束的输出电平设置成与各种颜色的特性相匹配。

4. 发明授权

US4933549A Light beam scanning apparatus 失效
标题翻译：光束扫描装置
公开(公告)号：US4933549A
公开(公告)日：1990-06-12
申请号：US281207
申请日：1988-12-08
申请人： Takanobu Fujioka , Takashi Mama , Yoshio Kaneko , Kenichirou Asada
发明人： Takanobu Fujioka , Takashi Mama , Yoshio Kaneko , Kenichirou Asada
IPC分类号： H04N1/23 , B41J2/44 , B41J2/47 , G02B26/10 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/191
CPC分类号： H04N1/1916 , B41J2/473 , H04N1/053 , H04N1/1911 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04786
摘要： A multi-beam detecting apparatus adapted to an optical system in which a recording medium is scanned by a plurality of light beams emitted from respective light sources, includes a photodetector, a light interrupting member, and a control circuit. The photodetector produces detection signals when the corresponding light beams come to a predetermined position. The light interrupting member is interposed between the light sources and the light detecting member, and has transparent portions related to the respective light beams. A controlling circuit controls ON/OFF states of the light source in accordance with the respective detection signals related to the corresponding light beams passing through the respective transparent portions in the light interrupting member.
摘要翻译：一种多光束检测装置，其特征在于，适用于通过从各光源射出的多个光束对记录媒体进行扫描的光学系统，包括光检测器，遮光部件和控制电路。当相应的光束到达预定位置时，光电检测器产生检测信号。遮光构件插入在光源和光检测构件之间，并且具有与各个光束相关的透明部分。控制电路根据与通过遮光构件中的各个透明部分的相应光束相关的各个检测信号来控制光源的接通/断开状态。

5. 发明授权

US4866538A Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US4866538A
公开(公告)日：1989-09-12
申请号：US144170
申请日：1988-01-15
申请人： Kenichirou Asada
发明人： Kenichirou Asada
IPC分类号： H04N1/40
CPC分类号： H04N1/40037
摘要： An image forming apparatus which produces image data by reading an original document, modulates a light beam to be radiated from a light emitting element by the image data, and exposes an electrophotographic conductive element imagewise by the light beam modulated. The power of the modulated beam is varied dot by dot in association with tones. The apparatus renders multiple tones without lowering resolution.
摘要翻译：一种通过读取原始文档产生图像数据的图像形成装置，通过图像数据调制要从发光元件辐射的光束，并通过光束调制曝光电子照相导电元件成像。调制光束的功率与色调相关联地逐点改变。该设备呈现多个色调而不降低分辨率。

6. 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。

7. 发明授权

US4933874A Printer 失效
标题翻译：打印机
公开(公告)号：US4933874A
公开(公告)日：1990-06-12
申请号：US330683
申请日：1989-03-30
申请人： Kenichirou Asada , Yoshiki Yoshida , Kazuo Murai
发明人： Kenichirou Asada , Yoshiki Yoshida , Kazuo Murai
IPC分类号： B41J2/44 , G06K15/12 , H04N1/113 , H04N1/23 , H04N1/36
CPC分类号： G06K15/1219 , Y10S347/90
摘要： A printer structure relies on a laser modulator operating in response to image data cooperates with a rotary deflector for deflecting the modulated laser onto a recording medium with the rotation of the rotary deflector being controlled by a predetermined signal. A synchronizer receives the deflected laser irradiated from the rotary deflector in the vicinity of the recording medium and the synchronizer outputs a signal which defines a timing which the laser modulator uses to begin modulation. At least three memories are used which are each capable of storing the image data corresponding to one line defined by one deflection of the rotary deflector and a memory control device controls the writing of the image data inputted from an exterior of the printer in one memory means after switching the one memory to a write operation in synchronization with the rotary signal defining the one line. Subsequently, the image data which is written in the particular one memory is read after switching the one memory to a read operation and transferring the read image data to the laser modulator.
摘要翻译：打印机结构依赖于响应于与旋转偏转器协作的图像数据而工作的激光调制器，用于将调制的激光偏转到记录介质上，其中旋转偏转器的旋转由预定信号控制。同步器接收在记录介质附近从旋转偏转器照射的偏转激光器，并且同步器输出限定激光调制器用来开始调制的定时的信号。使用至少三个存储器，每个存储器能够存储对应于由旋转偏转器的一个偏转限定的一条线的图像数据，并且存储器控制装置控制从打印机的外部输入的图像数据的写入到一个存储装置在将一个存储器切换到与定义一行的旋转信号同步的写入操作之后。随后，在将一个存储器切换到读取操作并将读取的图像数据传送到激光调制器之后，读取写入特定一个存储器中的图像数据。

8. 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。

9. 发明授权

US06570675B1 Image forming apparatus capable of controlling timing for a plurality of laser beams to write an image 失效
标题翻译：能够控制多个激光束的定时以写入图像的图像形成装置
公开(公告)号：US06570675B1
公开(公告)日：2003-05-27
申请号：US09225290
申请日：1999-01-05
申请人： Kenichirou Asada
发明人： Kenichirou Asada
IPC分类号： G06K5100
CPC分类号： H04N1/0473
摘要： An image forming apparatus that forms an image by scanning a recording medium with a plurality of light beams that are modulated by individual image forming signals respectively corresponding to the light beams. A beam detecting device detects the plurality of light beams at preset positions and outputs corresponding detection signals. At least one delay device delays each of the detection signals from the beam detecting device by an arbitrary time period which is predetermined individually for each of the detection signals. A reference clock signal generating device generates a plurality of reference clock signals on the basis of delayed detection signals output from the at least one delay device. The image forming apparatus performs an image forming operation according to the plurality of reference clock signals.
摘要翻译：通过用分别对应于光束的各个图像形成信号调制的多个光束扫描记录介质来形成图像的图像形成装置。光束检测装置在预设位置检测多个光束并输出相应的检测信号。至少一个延迟装置将来自光束检测装置的每个检测信号延迟对于每个检测信号预先分别预定的任意时间段。参考时钟信号发生装置基于从至少一个延迟装置输出的延迟检测信号产生多个基准时钟信号。图像形成装置根据多个参考时钟信号执行图像形成操作。

10. 发明授权

US5450212A Image forming apparatus and method 失效
标题翻译：图像形成装置及方法
公开(公告)号：US5450212A
公开(公告)日：1995-09-12
申请号：US366425
申请日：1994-12-29
申请人： Kenichirou Asada
发明人： Kenichirou Asada
IPC分类号： H04N1/407 , H04N1/40 , H04N1/405 , H04N1/04
CPC分类号： H04N1/4056
摘要： An image forming apparatus comprises an image signal converting means. The image converting means converts a first image signal into a second image signal. The first image signal includes an n-bit digital signal indicating a tone level of an image. The second image signal includes an m-bit digital signal indicating the tone level of the image. Here, m and n are integers and m is greater than n. A predetermined relationship between 2.sup.n values expressible by the n-bit digital signal and 2.sup.n related values among 2.sup.m values expressible by the m-bit digital signal is according to a first image forming characteristic in the image forming apparatus. The image forming apparatus further comprises an image forming means having a second image forming characteristic. The image forming means is coupled to the image signal converting means and forms the image based on the second image signal related to a combination of the first and second image forming characteristics.
摘要翻译：图像形成装置包括图像信号转换装置。图像转换装置将第一图像信号转换为第二图像信号。第一图像信号包括指示图像的音调电平的n位数字信号。第二图像信号包括指示图像的音调电平的m位数字信号。这里，m和n是整数，m大于n。根据图像形成装置中的第一图像形成特性，由n位数字信号表示的2n个值和由m位数字信号表示的2m值之中的2n个相关值之间的预定关系是根据第一图像形成特性。图像形成装置还包括具有第二图像形成特性的图像形成装置。图像形成装置耦合到图像信号转换装置，并且基于与第一和第二图像形成特性的组合相关的第二图像信号形成图像。

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