Image forming apparatus having a malfunction detection device and power
shutdown therefor
    1.
    发明授权
    Image forming apparatus having a malfunction detection device and power shutdown therefor 失效
    图像形成装置具有故障检测装置和电源关闭

    公开(公告)号:US4994852A

    公开(公告)日:1991-02-19

    申请号:US232763

    申请日:1988-08-16

    IPC分类号: G03G15/20

    CPC分类号: G03G15/2003 G03G15/2039

    摘要: An image forming apparatus for electrophotographically producing a toner image on a recording sheet medium, a toner image fixing assembly which includes a heater unit having an operative condition to thermally fix the toner image on the recording sheet medium, a power supply circuit for electrically energizing the heater unit through a switch, a microprocessor unit for controlling the power supply circuit, the microprocessor unit being operative to supply to the power supply circuit a control signal effective to actuate the switch to cyclically close and open for a predetermined period of time for the purpose of inspecting the heater unit for any malfunction, a detecting element directly responsive to the condition of the heater unit and operative to produce a signal indicative of the detected condition of the heater unit, a malfunction detector network responsive to the signal from the detecting element, the malfunction detector network being operative to produce a malfunction signal indicating a malfunction of the heater unit when, in the presence of the control signal from the digital control network, the signal from the detecting element indicates that the heater unit is continuously in operation, and a disabling device for forcibly disabling the power supply circuit in response to the malfunction signal from the malfunction detector network.

    摘要翻译: 一种用于在记录纸介质上电子照相制造调色剂图像的图像形成装置,包括具有将调色剂图像热记录在记录纸介质上的操作状态的加热器单元的调色剂图像定影组件, 加热器单元,用于控制电源电路的微处理器单元,所述微处理器单元可操作以向所述电源电路提供控制信号,所述控制信号有效地致动所述开关以周期性地闭合和打开预定的时间段,以达到该目的 检查所述加热器单元是否有任何故障,检测元件直接响应于所述加热器单元的状况并且可操作以产生指示所述加热器单元的检测状态的信号;响应于来自所述检测元件的信号的故障检测器网络, 故障检测器网络可操作以产生故障信号 当来自数字控制网络的控制信号存在来自检测元件的信号指示加热器单元持续运行时,指示加热器单元的故障,以及用于强制禁用电源电路的禁用装置 响应来自故障检测器网络的故障信号。

    Waste toner recovery device for use in electrostatic copying machines
    2.
    发明授权
    Waste toner recovery device for use in electrostatic copying machines 失效
    用于静电复印机的废粉回收装置

    公开(公告)号:US4982231A

    公开(公告)日:1991-01-01

    申请号:US374920

    申请日:1989-07-03

    IPC分类号: G03G21/10 G03G21/12

    CPC分类号: G03G21/12

    摘要: A waste toner recovery device for use in electrostatic copying machines has a sensor and control unit which provide an advance warning when the volume of waste toner in a waste toner recovery bottle reaches a specific warning-start quantity. The control unit allows a desired value corresponding to the warning-start quantity to be selected in the copying machine.

    摘要翻译: 用于静电复印机的废调色剂回收装置具有传感器和控制单元,当废粉回收瓶中的废调色剂的体积达到特定的警告开始量时,该传感器和控制单元提供预警。 控制单元允许在复印机中选择对应于警告开始量的期望值。

    Image forming apparatus having a system for preventing overheating of
the heat rollers
    3.
    发明授权
    Image forming apparatus having a system for preventing overheating of the heat rollers 失效
    具有防止热辊过热的系统的图像形成装置

    公开(公告)号:US5032874A

    公开(公告)日:1991-07-16

    申请号:US434559

    申请日:1989-11-13

    IPC分类号: G03G15/20 G05D23/24

    摘要: An image forming apparatus includes a pair of fixing rollers having a heater, a heater controller for outputting a turn-on/off signal to the heater, a sensor for detecting a turn-on/off state of the heater, a generator for generating a signal during an image forming operation and a prohibiting controller for cutting off a power supply to the heater when the signals from the heater controller, the sensor and the generator are simultaneously supplied.

    摘要翻译: 图像形成装置包括一对具有加热器的定影辊,用于向加热器输出开启/关闭信号的加热器控制器,用于检测加热器的接通/断开状态的传感器,用于产生加热器的发生器 在加热器控制器,传感器和发生器的信号被同时供给时,图像形成操作期间的信号和用于切断对加热器的电源的禁止控制器。

    Copying apparatus capable of forming a composite image of an outline
image and a normal image
    4.
    发明授权
    Copying apparatus capable of forming a composite image of an outline image and a normal image 失效
    能够形成轮廓图像和正常图像的合成图像的复印装置

    公开(公告)号:US4866474A

    公开(公告)日:1989-09-12

    申请号:US147323

    申请日:1988-01-22

    摘要: Copying apparatus is provided in which outline copying for only a designated area of an original image can be easily selected. An area for the outline copying can be designated and images inside and outside the designated area can be copied in different colors. The arrangement includes a plurality of keys for designating an area of an original image to be copied and a scorotron charger for causing a potential in areas other than the outline portions of an electrostatic latent image, formed on a photoreceptor drum, to be substantially equal to a potential in an area containing the image. An eraser unit is provided for erasing the charge in an area where development is not required and a developing device develops the electrostatic latent image. A transfer charger is provided for transferring the image developed by the developing device onto copying paper. When an area of the original images designated and an outline image forming mode is selected by the operator of the machine, two copy operations are performed to composite an outlined image formed inside or outside the designated area and a normal image formed in the area which does not include the outline image so that a composite image is copied onto the copy paper.

    摘要翻译: 提供了复制设备,其中可以容易地选择仅原始图像的指定区域的轮廓复制。 可以指定轮廓复制的区域,并且可以以不同的颜色复制指定区域内外的图像。 该装置包括用于指定要复制的原始图像的区域的多个键和用于使形成在感光鼓上的静电潜像的除了轮廓部分之外的区域中的电位大致等于 在包含图像的区域中的潜力。 提供了一种擦除单元,用于在不需要显影的区域中擦除电荷并且显影装置显影静电潜像。 提供转印充电器,用于将由显影装置显影的图像转印到复印纸上。 当指定的原始图像的区域和轮廓图像形成模式被机器的操作者选择时,执行两次复印操作以复合在指定区域内部或外部形成的轮廓图像和在该区域中形成的正常图像 不包括轮廓图像,以便将复合图像复制到复印纸上。

    Illuminating device for image exposure
    5.
    发明授权
    Illuminating device for image exposure 失效
    用于图像曝光的照明装置

    公开(公告)号:US4853739A

    公开(公告)日:1989-08-01

    申请号:US210758

    申请日:1988-06-23

    IPC分类号: G03G15/04

    CPC分类号: G03G15/04036

    摘要: An illuminating device for image exposure in an electrophotographic copying machine, which employs a fluorescent lamp whose voltage is variable as an illumination source and has signals to indicate when the copying machine is ready to make copies and to tell when the light amount for illumination is insufficient after preliminary lighting being performed for a fixed amount of time. A temperature sensor to detect tube wall temperature of the fluorescent lamp and a light sensor to detect the amount of light emitted from the lamp installed in the device to permit the preliminary lighting of the fluorescent lamp to be carried out at an appropriate voltage. Therefore, clear copies are readily made soon after the power of the copying machine is turned on, and, electric power waste and/or serious troubles of the machine which may occur by further use as well as exhaustion of the lamp by unnecessary high voltages can be avoided.

    摘要翻译: 一种用于电子照相复印机中的图像曝光的照明装置,其采用电压可变作为照明源的荧光灯,并且具有指示复印机何时准备复印的信号,并且判断何时照明的光量不足 在初步照明进行一段固定的时间后。 一种用于检测荧光灯的管壁温度的温度传感器和用于检测从安装在该装置中的灯发出的光量的光传感器,以允许以适当的电压进行荧光灯的预备点亮。 因此,在复印机的电源打开之后很快就可以清楚地复印,并且由于不必要的高电压而进一步使用以及可能发生的可能发生的电机的电力浪费和/或严重的故障可能会导致灯的耗尽 避免。