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31. 发明授权

US5309182A Bicolor image forming apparatus for forming a bicolor image on a photoconductive element 失效
标题翻译：在感光元件上形成双色图像的双色图像形成装置
公开(公告)号：US5309182A
公开(公告)日：1994-05-03
申请号：US969346
申请日：1992-10-30
申请人： Takashi Mama , Yuji Yasuda , Kan Tomita , Fumihiro Miyagawa , Shinji Kobayashi , Takanobu Fujioka , Hidetoshi Kanai , Yoshiki Yoshida
发明人： Takashi Mama , Yuji Yasuda , Kan Tomita , Fumihiro Miyagawa , Shinji Kobayashi , Takanobu Fujioka , Hidetoshi Kanai , Yoshiki Yoshida
IPC分类号： B41J2/525 , B41J2/44 , B41J2/445 , B41J2/45 , B41J2/455 , B41J3/54 , G03G15/01 , G03G15/04 , H04N1/036 , H04N1/04 , H04N1/23 , H04N1/50
CPC分类号： G03G15/011 , H04N1/04 , H04N1/506 , H04N1/0464
摘要： A bicolor image forming apparatus having first and second exposing means and first and second developing means arranged around a photoconductive element. The first and second developing means are implemented as a deflection scanning type and a line type, respectively. Parts around a photoconductive element are arranged with ease to promote the miniaturization of the apparatus. This stems from the principle that the image quality may be enhanced for an image of particular color and lowered for an image of another color expected to be printed less frequently. Specifically, the apparatus has deflection scanning type exposing means for forming the image of particular color, and line type exposing means which has an inherently long optical path and simple structure for forming the image of another color.
摘要翻译：具有第一和第二曝光装置的双色图像形成装置和围绕光电导元件布置的第一和第二显影装置。第一和第二显影装置分别实现为偏转扫描型和线型。布置在感光元件周围的部分容易地设置以促进设备的小型化。这源于对于特定颜色的图像可以增强图像质量并且对于期望被更少打印的另一种颜色的图像降低的原理。具体地，该装置具有用于形成特定颜色的图像的偏转扫描型曝光装置，以及具有固有的长光程和用于形成另一颜色的图像的简单结构的线型曝光装置。

32. 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。

33. 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。

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