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1. 发明授权

US4039127A Continuous plotter 失效
标题翻译：连续绘图仪
公开(公告)号：US4039127A
公开(公告)日：1977-08-02
申请号：US656510
申请日：1976-02-09
申请人： Donald F. Huffhines , J. S. Jones , Clarence G. Smith
发明人： Donald F. Huffhines , J. S. Jones , Clarence G. Smith
IPC分类号： G01D9/26 , G01D15/14 , G01D15/24
CPC分类号： G01D9/26 , G01D15/14 , G01D15/24
摘要： An apparatus for plotting information, e.g., seismic data, onto a continuous sheet of a recording medium, e.g., photographic film. The film travels from a supply reel, over an advance roller, across a flat exposure surface, and onto a takeup roller. Torque motors apply equal but opposite torques to the supply reel and the takeup reel to maintain the film in tension to insure that the film will lie flat on the exposure surface during the plotting operation. A stepping motor rotates advance roller to move the film a precise amount across the exposure surface at desired times during the plotting operation. A camera, e.g., cathode ray tube, which receives data and projects it onto the film on the exposure surface, is mounted on a carriage which is swept back and forth across the exposure surface by means of a lead screw driven by a precision stepping motor. Control circuitry means is provided which not only drives the stepping motor and, hence, the carriage at a constant, defined speed during the plotting portion of a sweep but also provides for the proper acceleration and deceleration of the motor during each sweep of the carriage.
摘要翻译：用于将信息（例如，地震数据）绘制到记录介质的连续片材上的设备，例如摄影胶片。胶片从供应卷轴上行进，超过推进辊，穿过平坦的曝光表面，并且到卷绕辊上。扭矩电机对供应卷轴和卷取卷轴施加相等但相反的扭矩，以保持胶片处于张力状态，以确保胶片在绘图操作期间平放在曝光表面上。在绘图操作期间，步进电机旋转提前滚轮以在期望的时间将胶片精确地移动到曝光表面上。将接收数据并将其投影到曝光表面上的胶片上的照相机，例如阴极射线管，安装在通过由精密步进电机驱动的导螺杆而在曝光表面上来回扫过的托架上。提供了控制电路装置，其不仅在扫描的绘制部分期间以恒定的限定速度驱动步进电机，并且因此驱动滑架，而且还在滑架的每次扫掠期间提供电动机的适当的加速和减速。

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