Electrophotographic apparatus and electrophotographic method
    1.
    发明授权
    Electrophotographic apparatus and electrophotographic method 失效
    电子照相设备和电子照相方法

    公开(公告)号:US5555074A

    公开(公告)日:1996-09-10

    申请号:US370707

    申请日:1995-01-10

    IPC分类号: G03G15/20 G03G21/00

    摘要: The disclosure is concerned with an electrophotographic apparatus comprising a toner image supporting member on which a toner image developed on an electrostatic latent image is formed, transferring means for transferring the toner image on said toner image supporting member to a recording medium, conveying means for bringing the recording medium into contact with the image supporting member, a fixing roller and a compression roller in contact with each other to fix the toner image on the recording medium, heating means disposed inside at least one of the fixing roller and the compression roller, wherein there are provided temperature detection means for detecting the surface temperature of the fixing roller and state detection means for detecting the state of the fixing apparatus before starting of the fixing apparatus.

    摘要翻译: 本公开涉及一种电子照相设备,包括其上形成有在静电潜像上显影的调色剂图像的调色剂图像支撑构件,用于将所述调色剂图像支持构件上的调色剂图像转印到记录介质的转印装置,用于将 与图像支撑构件接触的记录介质,定影辊和压缩辊彼此接触以将调色剂图像定影在记录介质上,加热装置设置在定影辊和压缩辊中的至少一个中,其中 提供了用于检测定影辊的表面温度的温度检测装置和用于在定影装置启动之前检测定影装置的状态的状态检测装置。

    Electro-photographic apparatus having transfer bias control
    2.
    发明授权
    Electro-photographic apparatus having transfer bias control 失效
    具有转印偏压控制的电子照相设备

    公开(公告)号:US5761568A

    公开(公告)日:1998-06-02

    申请号:US773837

    申请日:1996-12-27

    IPC分类号: G03G15/00 G03G15/16 G03G21/00

    摘要: An electrophotographic imaging apparatus includes a toner image holding body, a transcription unit for transcribing the toner image on the toner image holding body onto a recording medium, and a conveyor for conveying a recording medium toward the toner image holding body and transcription unit. A judging device will judge whether printing is of a first page or not and if it is decided that printing is to be performed on a first page, a first measuring device will measure the electrical characteristic of the toner image holding body prior to the feeding of a recording medium and a transcription voltage will be set depending of this measured result. Thereafter, the recording medium will be conveyed toward the transcription unit where the electrical characteristics of the non-printing region on the recording medium will be measured via a second measuring device and the transcription voltage will be further adjusted. If it is judged that the recording sheet is not the first sheet, only the second measuring and adjusting will be performed. In this manner, transcribing of a toner image can always be performed regardless of the kind of paper being used and/or changes in the environment (temperature, humidity) and a high transcribing efficiency can be attained.

    摘要翻译: 电子照相成像设备包括调色剂图像保持体,用于将调色剂图像保持体上的调色剂图像转印到记录介质上的转印单元和用于向记录介质传送调色剂图像保持体和转录单元的传送器。 判断装置将判断打印是否是第一页,如果确定要在第一页上执行打印,则第一测量装置将在馈送之前测量调色剂图像保持体的电特性 将根据该测量结果设置记录介质和转录电压。 此后,记录介质将被传送到记录介质上的非打印区域的电特性将经由第二测量装置测量的转录单元,并且转录电压将被进一步调整。 如果判断记录纸不是第一张纸,则仅进行第二次测量和调整。 以这种方式,总是可以执行调色剂图像的转录,而不管使用的纸张的种类和/或环境变化(温度,湿度)和高转录效率如何。