公开(公告)号：US4864347A

公开(公告)日：1989-09-05

申请号：US176942

申请日：1988-04-04

申请人： Tadashi Nakagawa ,  Nobuo Shinozaki ,  Shigeru Tagami ,  Youichi Seki

发明人： Tadashi Nakagawa ,  Nobuo Shinozaki ,  Shigeru Tagami ,  Youichi Seki

IPC分类号： G03B9/10 ,  G03B7/097 ,  G03B9/24

CPC分类号： G03B7/097

摘要： A program shutter has a plurality of shutter sectors driven in opening and closing directions by a reversible stepping motor to define a lens aperture during an exposure operation. An arithmetic circuit calculates an exposure amount corresponding to the brightness of the object being photographed, and a counting circuit outputs a pulse count corresponding to the number of steps through which the stepping motor should be rotated based on the calculated exposure amount. A pulse circuit produces driving pulses equal in number to the number of steps determined by the counting circuit, and a time circuit determines the ON/OFF periods of the driving pulses based on the calculated exposure amount. The driving pulses are applied to the stepping motor through a driving circuit to accordingly drive the shutter sectors in the opening and closing directions during the exposure operation.

摘要翻译： 节目快门具有通过可逆步进电机在打开和关闭方向上驱动的多个快门扇区，以在曝光操作期间限定透镜孔径。 算术电路计算与拍摄对象的亮度相对应的曝光量，并且计数电路基于计算出的曝光量输出与步进电机应该旋转的步数相对应的脉冲数。 脉冲电路产生与由计数电路确定的步数相等的驱动脉冲，并且时间电路基于所计算的曝光量确定驱动脉冲的接通/断开周期。 驱动脉冲通过驱动电路施加到步进电机，从而在曝光操作期间相应地在开闭方向上驱动快门扇区。

公开(公告)号：US4191459A

公开(公告)日：1980-03-04

申请号：US701020

申请日：1976-06-30

申请人： Takeo Saito ,  Youichi Seki ,  Kiyoshi Kitai

发明人： Takeo Saito ,  Youichi Seki ,  Kiyoshi Kitai

IPC分类号： G03B7/093 ,  G03B9/58 ,  G03B7/08

CPC分类号： G03B7/093 ,  G03B9/58

摘要： A camera shutter digital control circuit having a counter for counting a number of pulses representative of exposure time and for reading-out the counted pulses to control exposure time. An adjustable delay circuit synchronizes shutter opening and the initiation of memory read-out. Upon the initiation of shutter opening a signal is applied to the delay circuit, which is adjusted to develop a delay equal to a particular shutter opening time. The delayed signal is then applied to initiate reading-out of the control pulses so that the exposure time is controlled in synchronism with the shutter opening.

摘要翻译： 一种照相机快门数字控制电路，具有用于对代表曝光时间的脉冲数进行计数并用于读出计数脉冲以控制曝光时间的计数器。 可调节延迟电路使快门开启和存储器读出的启动同步。 在快门打开开始时，信号被施加到延迟电路，该延迟电路被调整以产生等于特定快门打开时间的延迟。 然后施加延迟信号以开始读出控制脉冲，使得曝光时间与快门开口同步地被控制。

公开(公告)号：US4107708A

公开(公告)日：1978-08-15

申请号：US698062

申请日：1976-06-21

申请人： Takeo Saito ,  Youichi Seki

发明人： Takeo Saito ,  Youichi Seki

IPC分类号： G03B7/093 ,  G03B9/58 ,  G03B17/20 ,  G03B7/00

CPC分类号： G03B17/20 ,  G03B7/093 ,  G03B9/58

摘要： An electric shutter circuit having an exposure time display disabled in synchronism with the opening of a camera shutter. A brightness-time conversion circuit and a pulse generator together develops a plurality of pulses the number of which is representative of the exposure time and which are stored in a reversible counter. Upon actuation of a shutter release mechanism a display circuit is enabled to display the exposure time by displaying a visual signal determined by the number of pulses stored in the reversible counter. The display circuit is disabled in synchronism with the shutter opening. In one embodiment a Schmidt trigger circuit is triggered by the shutter release mechanism to disable the display circuit.

摘要翻译： 具有与相机快门的打开同步的曝光时间显示禁止的电动快门电路。 亮度时间转换电路和脉冲发生器一起产生多个脉冲，其数目代表曝光时间并存储在可逆计数器中。 在启动快门释放机构时，显示电路能够通过显示由存储在可逆计数器中的脉冲数确定的视觉信号来显示曝光时间。 显示电路与快门开口同步禁用。 在一个实施例中，施密特触发电路由快门释放机构触发以禁用显示电路。

公开(公告)号：US08369736B2

公开(公告)日：2013-02-05

申请号：US12791374

申请日：2010-06-01

申请人： Yoshiyuki Takashima ,  Hideki Kuge ,  Takuji Matsumoto ,  Taiyou Uehara ,  Shingo Natsume ,  Youichi Seki

发明人： Yoshiyuki Takashima ,  Hideki Kuge ,  Takuji Matsumoto ,  Taiyou Uehara ,  Shingo Natsume ,  Youichi Seki

IPC分类号： G03G15/08

CPC分类号： G03G21/1676 ,  G03G15/0863 ,  G03G15/0865 ,  G03G15/0877 ,  G03G2221/163

摘要： A developing device includes: a developer holding member that faces an image carrier on which a latent image is formed and rotating while holding developer; a developing housing with a holding member mount that mounts developer holding member, and accommodates developer; a developer container connected to the developing housing and containing developer that flows into the developing housing; a partition member disposed in the developer container and partitioning an inner space of the developer container; and a loosening member having a loosening portion disposed in the developer container and extending along one side surface and another side surface of the partition member to partition the developer container, and a drawing portion that is connected to the loosening portion and extends from a port formed in the developer container to the outside of the developer container. When the drawing portion is drawn out, the loosening portion moves to loosen the developer.

摘要翻译： 显影装置包括：显影剂保持部件，其面对形成有潜像的图像载体，同时保持显影剂; 具有保持构件安装件的显影壳体，其安装显影剂保持构件，并容纳显影剂; 连接到显影壳体并且容纳流入显影室的显影剂的显影剂容器; 分隔构件，其设置在所述显影剂容器中并且分隔所述显影剂容器的内部空间; 以及松动部件，其具有设置在显影剂容器中的松动部分，并且沿分隔部件的一个侧表面和另一个侧表面延伸以分隔显影剂容器;以及拉伸部分，其连接到松动部分并从形成的端口延伸 在显影剂容器中到显影剂容器的外部。 当拉出部分时，松开部分移动以松开显影剂。

公开(公告)号：US4025929A

公开(公告)日：1977-05-24

申请号：US499995

申请日：1974-08-23

申请人： Takeo Saito ,  Youichi Seki

发明人： Takeo Saito ,  Youichi Seki

IPC分类号： G03B7/01 ,  G03B7/093 ,  G03B9/58 ,  G03B7/08

CPC分类号： G03B7/093 ,  G03B9/58

摘要： A shutter control circuit including a brightness-time conversion circuit for developing an output pulse having a duration representative of exposure time, and a standard pulse generating circuit for generating standard pulses at a certain rate. A reversible counter operable in an addition mode and a subtraction mode counts the standard pulses for the duration of the output pulse of the brightness-time conversion circuit so that the number of counted pulses is representative of exposure time. The reversible counter is then operated in a subtraction mode to read-out the counted pulses to control exposure time. The shutter control circuit further includes circuitry for operating the counter in the addition mode and for applying a selectable number of standard pulses to the reversible counter in order to determine exposure time. When the brightness-time conversion circuit controls the number of standard pulses counted, the control circuit is operative in an automatic mode, and when the number of standard pulses counted are manually selected the control circuit is operative in a manual mode. The shutter control circuit also includes circuitry for reducing the duration of the output pulse of the brightness-time conversion circuit substantially to zero so that the brightness-time conversion circuit is rendered ineffective to determine the exposure time when the shutter control circuit is operated in the manual mode.

摘要翻译： 一种快门控制电路，包括用于显影具有表示曝光时间的持续时间的输出脉冲的亮度 - 时间转换电路和用于以一定速率产生标准脉冲的标准脉冲发生电路。 在加法模式和减法模式下可操作的可逆计数器对亮度 - 时间转换电路的输出脉冲的持续时间内的标准脉冲进行计数，使得计数的脉冲数代表曝光时间。 然后以减法模式操作可逆计数器以读出计数脉冲以控制曝光时间。 快门控制电路还包括用于在相加模式下操作计数器的电路，并且用于将可选数量的标准脉冲施加到可逆计数器以便确定曝光时间。 当亮度时间转换电路控制计数的标准脉冲数时，控制电路以自动模式工作，当手动选择计数的标准脉冲数时，控制电路在手动模式下工作。 快门控制电路还包括用于将亮度 - 时间转换电路的输出脉冲的持续时间基本上减小到零的电路，使得亮度时间转换电路无效以确定快门控制电路在 手动模式。

公开(公告)号：US4038675A

公开(公告)日：1977-07-26

申请号：US558356

申请日：1975-03-14

申请人： Kiyoshi Kitai ,  Takeo Saito ,  Youichi Seki

发明人： Kiyoshi Kitai ,  Takeo Saito ,  Youichi Seki

IPC分类号： G03B7/093 ,  G03B9/62 ,  G03B9/64 ,  G03B17/18 ,  G04F3/00

CPC分类号： G03B9/64

摘要： An electric camera shutter of the type having a digital recording and reproducing system has a self-timer mode and has a counter circuit for counting and memorizing pulses produced by a pulse generator. In one mode of operation, the exposure time is controlled in accordance with the memorized content of the counter circuit and when in the self-timer mode, the output of the counter circuit controls the energization of a self-timer operation indicator circuit which indicates operation in the self-timer mode.

公开(公告)号：US4019189A

公开(公告)日：1977-04-19

申请号：US550030

申请日：1975-02-14

申请人： Kiyoshi Kitai ,  Takeo Saito ,  Youichi Seki

发明人： Kiyoshi Kitai ,  Takeo Saito ,  Youichi Seki

IPC分类号： G03B7/093 ,  G03B9/62 ,  G03B9/64 ,  G03B7/08

CPC分类号： G03B7/093

摘要： A digital exposure time control circuit including a standard pulse generating circuit for developing standard rate pulses which are applied under control of a brightness-time conversion circuit to a dividing circuit, and subsequently counted in a reversible counter operating in a counting mode. The number of standard pulses counted are controlled by the brightness-time conversion circuit to be proportional to an exposure time, and the counted pulses are subsequently read-out from the counter to control exposure time. The exposure time control circuit also includes a self-timer control circuit which is responsive to a predetermined number of counted pulses to clear the reversible counter, and enable the brightness-time conversion circuit when the number of counted pulses exceeds the predetermined number in order to develop a delay time, determined by the predetermined number of pulses to which the self-timer is responsive, before the start of counting the pulses for controlling exposure time.The known electric self-timer circuit of exterior photometric type exposure time control circuit is provided with a delay circuit consisting of condensers, resistors, and other analog components separate from the exposure time control circuit. Camera operation actuates the delay circuit for the self-timer when the self-timer is employed, demagnetizes (excites) the electromagnet for controlling the self-timer time when the self-timer time is ended, mechanically transfers a change-over switch from the delay circuit for the self-timer to the exposure time control circuit by a well-known means, simultaneously opens the shutter blade, and after effecting exposure allows the electromagnet for exposure time control to be demagnetized (excited) thereby closing the shutter blade.For the electric self-timer circuit of an internal photometric type electric shutter control circuit, however no consideration has hitherto been given as to whether the time of exposure is controlled by an analog means or whether it is digitally controlled. From this viewpoint, an addition of an electric self-timer to the internal photometric type electric shutter control circuit may, for example, as in the electric self-timer circuit of the above-said external photometric type electric shutter control circuit wherein the delay circuit for self-timer is separate from the exposure time control circuit, and after elapse of self-timer time, the change-over switch is made to transfer to the exposure time control circuit by a signal generated upon demagnetization (exciting) of the electromagnet for controlling self-timer time thereby to effect memorizing the brightness of a subject and causing the view finder mirror's up going motion. When the mirror goes up, for example, in the case of a focal-plane shutter, exposure is completed by allowing the front shutter curtain to travel first for effecting exposure, and then by travelling the back shutter curtain as the electromagnet for controlling the time of exposure is demagnetized (excited). However, the self-timer circuit system applying the above-said method must also be provided with the delay circuit for the self-timer besides the exposure time control circuit, and since the self-timer time is normally approximately ten seconds, not only the condenser with a high capacitance is required, but the space convenience and cost requirements may be prohibitive. An electric shutter circuit using this type of memory reproducing system is often integrated, usually because it is complicated. And, it is now almost impossible to provide a condenser having a high capacitance in an integrated circuit. As described above, moreover, any bounce of the change-over switch inevitably occurs when the change-over switch is transfered from the self-timer circuit to the exposure time control circuit by a signal obtainable from the electromagnet for controlling self-timer time at the completion of self-timer operation and will cause a big error in subsequent memory actions so that the most reliable changeover switch will be required. Besides, there is a defect such that if memory action is made before completion of memorization when the memory time is long, because the change-over switch is mechanically transfered from the delay circuit for the self-timer to the exposure time control circuit by a signal obtained from the electromagnet for controlling self-timer time control mirror-up movement will begin at the same time and the exposure time control circuit will remain in the memory mode.The present invention eliminates the above-said defect with an exposure time control circuit for a camera electric shutter, with a self-timer in the electric shutter control circuit which is of the type having a digital memory reproducing system in which pulses generated in a pulse generating circuit are memorized in a counting circuit by counting a number which corresponds to the brightness of a subject, and the time of exposure is controlled according to the memory content memorized in the counting circuit in synchronism with the start of shutter actuation. Standard pulses with a given frequency generated in the pulse generating circuit are divided through the counting circuit when the self-timer is operative and memorized after during an elapse of actuating time by the self-timer. Then a signal for starting the shutter opening is generated at the completion time of memorization.The embodiment of the present invention is based upon the exposure time control circuit for electric shutter using a digital memory reproducing system being proposed under the patent application Nos. Sho 48-95005, Sho 48-95006, Sho 48-95007 and Sho 48-95008 by this applicant, to which the self-timer circuit is added.

摘要翻译： 一种数字曝光时间控制电路，包括标准脉冲发生电路，用于产生在亮度时间转换电路的控制下施加到分频电路的标准速率脉冲，并随后在以计数模式操作的可逆计数器中计数。 计数的标准脉冲数由亮度 - 时间转换电路控制成与曝光时间成比例，随后从计数器读出计数脉冲以控制曝光时间。 曝光时间控制电路还包括自拍定时器控制电路，其响应于预定数量的计数脉冲来清除可逆计数器，并且当计数脉冲数超过预定数量时启用亮度时间转换电路，以便 在开始计数用于控制曝光时间的脉冲之前产生由自拍定时器响应的预定脉冲数确定的延迟时间。

公开(公告)号：US5060000A

公开(公告)日：1991-10-22

申请号：US427037

申请日：1989-10-25

申请人： Masuo Ogihara ,  Hiroyuki Ishida ,  Shinji Nagaoka ,  Youichi Seki ,  Shigeru Tagami ,  Hiroshi Yamazaki ,  Nobuo Shinozaki

发明人： Masuo Ogihara ,  Hiroyuki Ishida ,  Shinji Nagaoka ,  Youichi Seki ,  Shigeru Tagami ,  Hiroshi Yamazaki ,  Nobuo Shinozaki

IPC分类号： G03B3/10 ,  G03B7/10

CPC分类号： G03B3/10 ,  G03B7/10

摘要： A drive ring drivable by a stepping motor is normally urged by a spring to turn in one direction around a lens aperture. When not in use, the stepping motor is not subjected to the resilient force from the spring since the drive ring is locked against rotation by a ratchet wheel engaged by an engagement lever. The stepping motor is therefore not subjected to undue stresses and is prevented from malfunctioning. Consequently, focusing failures and exposure adjustment failures which could otherwise arise from malfunctioning of the stepping motor are prevented from occurring. In operation, a solenoid is energized to move the engagement lever out of engagement with the ratchet wheel, which is then freed to allow the drive ring to be turned by the stepping motor.

摘要翻译： 由步进电机驱动的驱动环通常由弹簧推动以围绕透镜孔向一个方向转动。 当不使用时，步进电机不受弹簧的弹力，因为驱动环被接合杆啮合的棘轮锁定以防旋转。 因此，步进电机不会受到过大的应力，并且不会发生故障。 因此，防止由于步进电机故障引起的聚焦故障和曝光调整故障发生。 在操作中，螺线管被通电以将接合杆移动脱离与棘轮的接合，然后释放该棘轮，以允许驱动环由步进电机转动。

公开(公告)号：US4881096A

公开(公告)日：1989-11-14

申请号：US15169

申请日：1987-02-17

申请人： Masuo Ogihara ,  Hiroyuki Ishida ,  Shinji Nagaoka ,  Youichi Seki ,  Shigeru Tagami ,  Hiroshi Yamazaki ,  Nobuo Shinozaki

发明人： Masuo Ogihara ,  Hiroyuki Ishida ,  Shinji Nagaoka ,  Youichi Seki ,  Shigeru Tagami ,  Hiroshi Yamazaki ,  Nobuo Shinozaki

IPC分类号： G03B13/36 ,  G02B7/09 ,  G03B3/10 ,  G03B7/10 ,  G03B9/08

CPC分类号： G03B7/10 ,  G03B3/10

摘要： A camera shutter has an automatic focusing lens operative when actuated to effect an automatic focusing operation. An actuating ring is normally placed in a non-operating region and momentarily shifted to an operating region during the automatic focusing operation. The actuating ring is sequentially displaceable in forward and reverse direction through the operating region to actuate the automatic focusing lens, and displaceable in the forward and reverse directions in the non-operating region without effecting actuation of the automatic focusing lens. A ratchet mechanism is coupled to the actuating ring for selectively locking and unlocking the actuating ring in the non-operating region in response to the displacement thereof in the forward and reverse directions. A bi-directionally rotatable stepping motor is connected to drive the actuating ring to displace the same in the forward and reverse directions.

摘要翻译： 相机快门具有自动聚焦透镜，当被致动时可操作以实现自动聚焦操作。 致动环通常放置在非操作区域中，并且在自动对焦操作期间暂时移动到操作区域。 致动环可以在正向和反向方向上顺序地通过操作区域移动，以启动自动聚焦透镜，并且在非操作区域中可沿前后方向移位，而不影响自动聚焦透镜的致动。 棘轮机构联接到致动环，用于响应于其在正向和反向的位移而选择性地在非操作区域中锁定和解锁致动环。 连接双向旋转的步进电动机以驱动致动环，以沿前后方向使其移动。

公开(公告)号：US3999191A

公开(公告)日：1976-12-21

申请号：US499977

申请日：1974-08-23

申请人： Takeo Saito ,  Youichi Seki

发明人： Takeo Saito ,  Youichi Seki

IPC分类号： G03B7/093 ,  G03B9/58 ,  G03B17/18 ,  G03B7/08

CPC分类号： G03B7/093 ,  G03B9/58

摘要： An electronic camera shutter control circuit having a reversible counter for counting a number of pulses proportional to the duration of an exposure time. When the camera shutter is opened pulses are subtracted from the memory content of the reversible counter until the counter content is zero and the exposure is terminated. The reversible counter includes a final stage which does not change state if the number of pulses applied to the counter exceeds the memory capacity of the counter. For this condition the exposure time is first controlled by the charging time of a capacitor until a voltage stored in the capacitor exceeds a certain value whereupon the memory content of the counter is subtracted until it is zero and the exposure is terminated.

摘要翻译： 一种具有可逆计数器的电子照相机快门控制电路，用于对与曝光时间的持续时间成比例的脉冲数进行计数。 当相机快门打开时，从可逆计数器的存储器内容中减去脉冲，直到计数器内容为零并且曝光被终止。 如果施加到计数器的脉冲数超过计数器的存储容量，则可逆计数器包括不改变状态的最后级。 对于这种情况，首先通过电容器的充电时间来控制曝光时间，直到存储在电容器中的电压超过一定值，从而减去计数器的存储器内容直到其为零并且曝光被终止。