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公开(公告)号：US4339190A
公开(公告)日：1982-07-13
申请号：US223420
申请日：1981-01-08
申请人： Yoji Sugiura
发明人： Yoji Sugiura
摘要： A process for producing an electromagnetically driven focal plane shutter including the steps of assembling an electromagnetic drive source and transmission members in a drive unit and the shutter blade groups in a shutter blade unit, and then assembling these units in a final unit.
摘要翻译： 一种用于制造电磁驱动的焦平面快门的方法，包括以下步骤：在驱动单元中组装电磁驱动源和传动构件，并将快门叶片组合在快门叶片单元中，然后在最终单元中组装这些单元。
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公开(公告)号：US4333721A
公开(公告)日：1982-06-08
申请号：US163405
申请日：1980-06-26
申请人： Syozo Yoshida , Yoji Sugiura
发明人： Syozo Yoshida , Yoji Sugiura
CPC分类号： G03B9/08
摘要： An electromagnetically driven shutter of which the leading and trailing curtains are driven by respective electromagnetic drive sources to make a forward and backward movement. The electromagnetic drive sources each have a magnetic winding constructed in a unified form of two coils arranged to be supplied with respective currents flowing in direction opposite to each other so that the forward movement of each of the leading and trailing curtains is followed, after a controlled time interval, by the backward movement thereof.
摘要翻译： 电磁驱动的快门，前帘和后帘由相应的电磁驱动源驱动以进行向前和向后的运动。 电磁驱动源各自具有构造成两个线圈的统一形式的磁性绕组，其被布置成供应相互以相反方向流动的相应电流，使得在控制之后遵循每个前帘和后帘的向前运动 时间间隔。
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公开(公告)号：US4297013A
公开(公告)日：1981-10-27
申请号：US116314
申请日：1980-01-28
摘要： A digital system for controlling coordination of the various portions of the camera to operate in selected modes including the automatic and bulb modes is provided with signal forming means comprising a count start switch and a bulb control switch connected in parallel to each other. Where the automatic mode is selected, in a predetermined time interval after the initiation of an actuation of release of the camera, as the both switches are open, the signal forming means produces an actuating signal which is then applied to discriminating means, causing the shutter to operate automatically. Where the bulb mode is selected, no actuating signal is produced even after the termination of duration of the predetermined time interval so that the discriminating means permits the opening of the shutter to continue until the termination of the release actuation.
摘要翻译： 用于控制相机的各个部分的协调以在包括自动和灯泡模式的选定模式中操作的数字系统被提供有包括计数启动开关和灯泡控制开关并联连接的信号形成装置。 在自动模式被选择的情况下，在开始释放相机的预定时间间隔中，当两个开关打开时，信号形成装置产生一个致动信号，然后将该启动信号施加到识别装置，从而使快门 自动运行。 在选择灯泡模式的情况下，即使在预定时间间隔的持续时间结束之后也不产生致动信号，使得识别装置允许快门的打开持续直到释放致动结束。
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公开(公告)号：US4236802A
公开(公告)日：1980-12-02
申请号：US70800
申请日：1979-08-29
申请人： Masanori Uchidoi , Masaharu Kawamura , Yoshihiro Shigeta , Yoji Sugiura , Hiroshi Yamamoto , Nobuo Tezuka
发明人： Masanori Uchidoi , Masaharu Kawamura , Yoshihiro Shigeta , Yoji Sugiura , Hiroshi Yamamoto , Nobuo Tezuka
CPC分类号： G03B17/20 , G03B7/0807
摘要： A safety device for preventing non exposure of film in a camera having a count switch which is normally closed prior to shutter release operation, the switch being opened after the shutter release operation begins to enable a timing circuit to start operating. In a preferred embodiment, the device includes a NOR gate having an input connected to one side of the count switch, and its output connected to the set terminal of a flip-flop which enables the shutter release operation. Another input of the NOR gate is connected to a differentiation circuit which provides an output signal when the shutter release button on the camera is actuated. This circuit arrangement operates so that the flip-flop is not set if the count switch is accidently in an open state when the release button is actuated. The shutter release operation is thereby prevented until the count switch is restored to working order.
摘要翻译： 一种安全装置，用于防止在具有在快门释放操作之前常闭的计数开关的相机中未曝光的胶片，开关在快门释放操作开始之后打开以使定时电路开始运行。 在优选实施例中，该器件包括NOR门，其具有连接到计数开关的一侧的输入，其输出连接到能够进行快门释放操作的触发器的设定端子。 NOR门的另一个输入端连接到差分电路，该差分电路当相机上的快门释放按钮被致动时提供输出信号。 如果计数开关在释放按钮被启动时意外地处于打开状态，则该电路装置工作，使得触发器不被置位。 由此防止快门释放操作，直到计数开关恢复到工作状态。
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