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1. 发明授权

US5983042A Color image forming apparatus having a printing mechanism selectively movable to operative and non-operative positions 失效
标题翻译：具有可选择性地移动到操作和非操作位置的打印机构的彩色图像形成装置
公开(公告)号：US5983042A
公开(公告)日：1999-11-09
申请号：US954733
申请日：1997-10-20
申请人： Masato Nagata , Hisao Ono , Yoshiharu Momiyama , Noboru Otaki , Atsushi Kurabayashi , Shinichi Murakami , Yoshitatsu Okiyama , Mikio Yamamoto , Shigeki Nakajima , Masato Sakai , Fumiaki Yoshida , Norio Ebata , Makoto Yabuki , Makoto Otake
发明人： Masato Nagata , Hisao Ono , Yoshiharu Momiyama , Noboru Otaki , Atsushi Kurabayashi , Shinichi Murakami , Yoshitatsu Okiyama , Mikio Yamamoto , Shigeki Nakajima , Masato Sakai , Fumiaki Yoshida , Norio Ebata , Makoto Yabuki , Makoto Otake
IPC分类号： G03G15/01 , G03G15/00
CPC分类号： G03G15/0194 , G03G2215/0119
摘要： A color image forming apparatus provides the prolonged life of the photosensitive drums, carrier belt, and toner of the respective colors and improves the quality of the printed color image. A carrier belt transports a recording medium placed thereon so that the recording medium passes through a plurality of printing mechanisms which print images of different colors on the recording medium in superposition. Each printing mechanism prints an image of a corresponding color. The printing mechanism is adapted to be moved into its operative position where the photosensitive drum of the printing mechanism is in contact with the carrier belt to print the image on the recording medium, and into its non-operative position where the photosensitive drum of the printing mechanism is not in contact with the carrier belt. A controller receives print data from a host device such as a personal computer and checks each page of the print data to determine whether any one of a predetermined plurality of colors is missing in the page. If a particular color is missing in the print data, then the controller outputs an UP signal to a positioning mechanism for a corresponding printing mechanism. If the color is not missing, then the controller outputs a DOWN signal. The printing mechanism moves a corresponding printing mechanism into the operative position if the UP signal is received from the controller and into its operative position if the DOWN signal is received.
摘要翻译：彩色图像形成装置提供各种颜色的感光鼓，传送带和调色剂的延长的寿命，并且提高了打印的彩色图像的质量。载体带传送放置在其上的记录介质，使得记录介质通过多个打印机构，其以叠加的方式在记录介质上打印不同颜色的图像。每个打印机构打印相应颜色的图像。打印机构适于移动到其操作位置，其中打印机构的感光鼓与传送带接触以将图像打印在记录介质上，并进入其非打印位置，其中打印的感光鼓机构不与传送带接触。控制器从诸如个人计算机的主机设备接收打印数据，并检查打印数据的每一页以确定页面中是否缺少预定多种颜色中的任何一种。如果在打印数据中缺少特定的颜色，则控制器向对应的打印机构的定位机构输出UP信号。如果颜色不丢失，则控制器输出DOWN信号。如果接收到DOWN信号，如果从控制器接收到UP信号并进入其操作位置，则打印机构将相应的打印机构移动到操作位置。

2. 发明授权

US6112037A Color image forming apparatus having a controller for setting printing speeds in dependence on a detected number of colors in an image signal 有权
标题翻译：彩色图像形成装置具有控制器，用于根据检测到的图像信号中的颜色数来设置打印速度
公开(公告)号：US6112037A
公开(公告)日：2000-08-29
申请号：US372150
申请日：1999-08-11
申请人： Masato Nagata , Hisao Ono , Yoshiharu Momiyama , Noboru Otaki , Atsushi Kurabayashi , Shinichi Murakami , Yoshitatsu Okiyama , Mikio Yamamoto , Shigeki Nakajima , Masato Sakai , Fumiaki Yoshida , Norio Ebata , Makoto Yabuki , Makoto Otake
发明人： Masato Nagata , Hisao Ono , Yoshiharu Momiyama , Noboru Otaki , Atsushi Kurabayashi , Shinichi Murakami , Yoshitatsu Okiyama , Mikio Yamamoto , Shigeki Nakajima , Masato Sakai , Fumiaki Yoshida , Norio Ebata , Makoto Yabuki , Makoto Otake
IPC分类号： G03G15/01 , G03G15/00
CPC分类号： G03G15/0194 , G03G2215/0119
摘要： A color image forming apparatus includes a carrier belt which runs along a transport path of a recording medium to transport the recording medium. A number of image-forming sections are aligned in the transport path. Each of the plurality of image-forming sections forms a toner image of a corresponding color included in an image signal. A plurality of transfer units are provided, with each being disposed to oppose a corresponding one of the number of image-forming sections. Each of the number of transfer units transferring the toner image of the corresponding color to the recording medium. A fixing unit is provided that fixes the toner image to the recording medium. A controller is provided that detects a number of colors in the image signal. The controller sets one set of speeds from a plurality of different sets of speeds in accordance with the number of colors. Each set of speeds includes a speed of the carrier belt, a speed at which each of the image-forming sections forms a respective toner image of a corresponding color, and a speed of the fixing unit. The speed of the carrier belt, the speed at which each of the image-forming sections forms a respective toner image of a corresponding color, and the speed of the fixing unit of any one respective set of speeds are substantially equal to each other.
摘要翻译：彩色图像形成装置包括沿着记录介质的传送路径延伸以运送记录介质的传送带。多个图像形成部分在传送路径中对齐。多个图像形成部分中的每一个形成包括在图像信号中的相应颜色的调色剂图像。提供了多个传送单元，每个传送单元被设置成与多个图像形成部分中的对应的一个相对。多个转印单元中的每一个将相应颜色的调色剂图像转印到记录介质上。提供了将调色剂图像定影到记录介质上的定影单元。提供了一种控制器，其检测图像信号中的多个颜色。控制器根据颜色的数量从多个不同的速度集合设定一组速度。每组速度包括载体带的速度，每个图像形成部分形成相应颜色的相应调色剂图像的速度和定影单元的速度。载体带的速度，每个图像形成部分形成相应颜色的相应调色剂图像的速度以及任何一个相应速度的定影单元的速度基本上彼此相等。

3. 发明授权

US06763200B2 Image forming apparatus with toner replacement sensor 有权
标题翻译：具有调色剂更换传感器的成像设备
公开(公告)号：US06763200B2
公开(公告)日：2004-07-13
申请号：US10087058
申请日：2002-02-28
申请人： Masato Sakai , Norio Ebata
发明人： Masato Sakai , Norio Ebata
IPC分类号： G03G1508
CPC分类号： G03G15/08 , G03G15/0266 , G03G2215/0119 , G03G2215/021 , G03G2215/0888
摘要： An image forming apparatus includes an image-forming unit having a charging section and a developing section that are rotated together with a photoconductor in an idling manner. The charging section and developing section receive voltages while rotating. The apparatus includes a toner sensor and a controller. The toner sensor outputs a detection signal indicating that the toner has been replenished in the image-forming unit. In accordance with the detection signal, the controller changes the voltages, a time length during which the photoconductor, charging section, and developing section are rotated, or speeds at which the photoconductor, charging section, and developing section are rotated. The time length is extended or speeds are increased when the image-forming unit has been replaced.
摘要翻译：图像形成装置包括具有充电部分和显影部分的图像形成单元，其以怠速方式与光电导体一起旋转。充电部分和显影部分在旋转的同时接收电压。该设备包括调色剂传感器和控制器。调色剂传感器输出表示调色剂在图像形成单元中被补充的检测信号。根据检测信号，控制器改变电压，光电导体，充电部分和显影部分旋转的时间长度，或光电导体，充电部分和显影部分旋转的速度。当图像形成单元被更换时，时间长度延长或速度增加。

4. 发明授权

US6014531A Electrophotographic printer and fixing unit controlling apparatus therfor 有权
标题翻译：电子照相打印机和定影单元控制装置
公开(公告)号：US6014531A
公开(公告)日：2000-01-11
申请号：US198372
申请日：1998-11-24
申请人： Norio Ebata , Daisuke Kobayashi , Shuichi Fujikura
发明人： Norio Ebata , Daisuke Kobayashi , Shuichi Fujikura
IPC分类号： G03G15/20
CPC分类号： G03G15/2039
摘要： A fixing unit has a heat roller with a heater element built therein, a pressure roller disposed to oppose the heat roller and holds and advances a print medium therebetween in sandwiched relation. A thermistor is in contact with the heat roller and detects the temperature of the heat roller. Another thermistor detects the temperature of the pressure roller. A control circuit controls energization of the heater element so as to maintain the temperature of the heat roller to a target temperature. The heater element is energized to maintain a constant value of Tc given by an equation Tc=Th+k.multidot.Tp where Th is a surface temperature of the heat roller, Tp is a surface temperature of the pressure roller, and k is a coefficient having the range of 0
摘要翻译：定影单元具有内置有加热器元件的加热辊，压辊设置成与加热辊相对并夹持和夹持介质之间。热敏电阻与加热辊接触并检测加热辊的温度。另一个热敏电阻检测压力辊的温度。控制电路控制加热器元件的通电，以将加热辊的温度保持在目标温度。加热器元件被通电以保持由公式Tc = Th + kxTp给出的Tc的恒定值，其中Th是加热辊的表面温度，Tp是加压辊的表面温度，k是具有范围的系数为0

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