Color printer using circulation period to control registration of images
    2.
    发明授权
    Color printer using circulation period to control registration of images 失效
    彩色打印机使用循环周期来控制图像的注册

    公开(公告)号:US5325154A

    公开(公告)日:1994-06-28

    申请号:US865796

    申请日:1992-03-30

    IPC分类号: G03G15/01 G03G21/00

    CPC分类号: G03G15/0131 G03G15/0163

    摘要: A color printer of the type that prints color images by sequentially transferring from a photosensitive drum toner images of different colors in color registration to each other on a recording sheet being circulated by a conveyer belt, the color printer having an improved color registration capability. In order to avoid influences of variations in printer constants, such as elongation and contraction of the conveyer belt due to accumulated changes and temperature variations, etc., the position of the formation of a plurality of toner images of different colors on the recording medium is controlled with high precision by controlling the position or timing of formation of two successive toner images of different colors by detecting the recording sheet circulation period during the formation of the toner image of each color or by detecting the recording sheet circulation period directly preceding it.

    摘要翻译: 一种彩色打印机,该彩色打印机通过从感光鼓顺序地转印彩色配准中的不同颜色的调色剂图像,在由输送带循环的记录纸上打印彩色图像,该彩色打印机具有改进的颜色配准能力。 为了避免打印机常数变化的影响,例如由于累积的变化和温度变化等引起的输送带的伸长和收缩,在记录介质上形成不同颜色的多个调色剂图像的位置是 通过在形成每种颜色的调色剂图像期间的记录片材循环周期或通过检测直接在其前面的记录片材循环周期来控制形成不同颜色的两个连续调色剂图像的位置或时间,从而高精度地控制。

    Laser beam printer control apparatus
    3.
    发明授权
    Laser beam printer control apparatus 失效
    激光束打印机控制装置

    公开(公告)号:US4589764A

    公开(公告)日:1986-05-20

    申请号:US662941

    申请日:1984-10-19

    摘要: A laser beam printer operatively responsive to a printing signal fed from a host control unit includes a printing unit for executing a xerographic process, a laser beam scanning unit, a fusing unit, a process control unit for controlling said printing unit, the laser beam scanning unit, and the fusing unit, and a signal processing unit for receiving the printing signal from the host control unit. When the host control unit begins to supply a printing signal to the signal processing unit, the signal processing unit supplies a provisional start signal to the process control unit. Upon receiving the provisional start signal, the process control unit controls the printing unit, the scanning unit, and the fusing unit to bring them into a ready state.

    摘要翻译: 可操作地响应于从主机控制单元馈送的打印信号的激光束打印机包括用于执行静电复印处理的打印单元,激光束扫描单元,定影单元,用于控制所述打印单元的处理控制单元,激光束扫描 单元和定影单元,以及用于从主机控制单元接收打印信号的信号处理单元。 当主机控制单元开始向信号处理单元提供打印信号时,信号处理单元向处理控制单元提供临时启动信号。 处理控制单元接收到临时启动信号后,控制打印单元,扫描单元和定影单元使其进入就绪状态。