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1. 发明授权

US06336752B1 Dual motor reciprocating belt shutter 失效
标题翻译：双电机往复式带挡板
公开(公告)号：US06336752B1
公开(公告)日：2002-01-08
申请号：US09443353
申请日：1999-11-19
申请人： Harvey L. Balopole , Victor Frampton , Anthony Langella , Bruce Mathews
发明人： Harvey L. Balopole , Victor Frampton , Anthony Langella , Bruce Mathews
IPC分类号： G03B904
CPC分类号： G03B9/38 , G03B9/30
摘要： A system and method are provided for exposing an imaging medium. The method uses a focal plane shutter system with two reversible motors controlled by a servo control processor. A belt connects the motors. One end of the belt is attached to a shaft of the first reversible motor. The other end of the belt is connected to a shaft of the second reversible motor. In the belt, there are a plurality of fixed width slits. The servo control processor selects one of the fixed width slits according to a desired exposure time setting. The two reversible motors move the belt during an imaging cycle. During the imaging cycle, the first motor winds the belt around its shaft. The second motor simultaneously unwinds the belt from around its shaft. The servo control processor controls the motors to accelerate the selected slit up to a constant imaging medium traversal speed. The constant traversal speed is also determined by the desired exposure time setting. The selected slit is traversed across the imaging medium at the constant imaging medium traversal speed. After fully exposing the imaging medium, the selected slit is decelerated to a resting position. Motor direction is reversed for both motors in the next imaging cycle. The sequence of accelerating the selected slit, traversing the imaging medium at constant speed, decelerating the selected slit, and reversing the motors, is repeated until a new slit is selected.
摘要翻译：提供了用于曝光成像介质的系统和方法。该方法使用具有由伺服控制处理器控制的两个可逆电机的焦平面快门系统。皮带连接电机。皮带的一端安装在第一可逆马达的轴上。带的另一端连接到第二可逆电动机的轴。在带中，有多个固定宽度的狭缝。伺服控制处理器根据期望的曝光时间设置选择固定宽度狭缝之一。两个可逆电机在成像周期中移动皮带。在成像周期期间，第一个电机将皮带绕其轴旋转。第二台电机同时从其轴上展开皮带。伺服控制处理器控制电机将所选择的狭缝加速到恒定的成像介质遍历速度。恒定的运行速度也由所需的曝光时间设定决定。所选择的狭缝以恒定的成像介质遍历速度穿过成像介质。在完全曝光成像介质之后，所选择的狭缝减速到静止位置。在下一个成像周期中，两个电机的电机方向相反。重复加速选择的狭缝，以恒定速度穿过成像介质，使所选择的狭缝减速和反转马达的顺序，直到选择新的狭缝。

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