Multiple exposure photographic device for camera
    1.
    发明授权
    Multiple exposure photographic device for camera 失效
    相机多重曝光摄影装置

    公开(公告)号:US4937603A

    公开(公告)日:1990-06-26

    申请号:US370236

    申请日:1989-06-22

    IPC分类号: G03B7/097 G03B7/10 G03B9/08

    CPC分类号: G03B7/10 G03B9/08

    摘要: A camera capable of multiple exposure photography. The camera has a lens shutter for performing a programmed exposure operation and a diaphragm-adjusting operation and a focal-plane shutter. The camera further includes a first selector means and a second selector means. The operation mode of the camera is switched between a lens shutter mode and a focal-plane shutter mode by the first selector means. In the lens shutter mode, the lens shutter is operated as a programmed shutter. In the focal-plane shutter mode, the shutter speed and the aperture are controlled by the focal-plane shutter and the lens shutter, respectively. The second selector means establishes a multiple exposure photographic mode. Also, the second selector means sets up the lens shutter mode irrespective of the setting of the first selector means.

    摘要翻译: 能够进行多次曝光摄影的相机。 该相机具有用于执行编程曝光操作和光阑调节操作和焦平面快门的透镜快门。 照相机还包括第一选择装置和第二选择装置。 通过第一选择器装置在镜头快门模式和焦平面快门模式之间切换照相机的操作模式。 在镜头快门模式下,镜头快门作为编程快门操作。 在焦平面快门模式下,快门速度和光圈分别由焦平面快门和透镜快门控制。 第二选择器装置建立多曝光照相模式。 此外,第二选择器装置设置透镜快门模式,而与第一选择器装置的设置无关。

    Shutter control device for camera
    2.
    发明授权
    Shutter control device for camera 失效
    相机快门控制装置

    公开(公告)号:US4763155A

    公开(公告)日:1988-08-09

    申请号:US4140

    申请日:1987-01-13

    CPC分类号: G03B9/62 G03B7/10 G03B7/26

    摘要: A camera has a shutter device driveable to undergo opening movement to open an aperture to effect exposure operation according to a given exposure value, and a motor actuatable to rotate at an unstable rotational speed for driving the shutter device. A detector operates after the motor starts rotating and before the shutter device undergoes its opening movement for detecting the rotational speed of the motor. A controller adjusts the shutter device in accordance with the detected rotational speed of the motor to thereby enable the shutter device to effect the exposure operation so as to accurately achieve the given exposure value.

    摘要翻译: 照相机具有可驱动的开闭装置,以便根据给定的曝光值进行打开光圈以进行曝光操作,以及电动机可致动以以不稳定的转速旋转以驱动快门装置。 在电动机开始旋转之后并且在快门装置进行其打开运动以检测电动机的转速之前,检测器运行。 控制器根据检测到的电动机的转速来调节快门装置,从而使快门装置能够进行曝光操作,从而准确地达到给定的曝光值。

    Circuit for detecting back light
    3.
    发明授权
    Circuit for detecting back light 失效
    电路检测背光

    公开(公告)号:US4945378A

    公开(公告)日:1990-07-31

    申请号:US290451

    申请日:1988-12-27

    IPC分类号: G01J1/44 G03B7/28

    CPC分类号: G03B7/099

    摘要: A circuit for detecting back light comprises a time constant circuit including a capacitor selectively connectable in series with either a resistive element, or one of two CdS photoconductive elements used to measure the central and surrounding portions, respectively, of an object being photographed. Three switches separately conect the resistive element and the two photoconductive elements in series with the capacitor. A circuit generates pulses for a length of time governed by a time constant determined by the time constant circuit, and three separate counters store the pulses the number of which is determined by the time constant. An arithmetic circuit processes the pulses stored in the counters to determine the amount of back light present on the object.

    摘要翻译: 用于检测背光的电路包括时间常数电路,时间常数电路包括可选择性地与电阻元件或两个CdS光导元件中的一个串联选择的电容器,所述电容元件分别用于测量被拍摄物体的中心部分和周围部分。 三个开关分别将电阻元件和两个光电元件串联连接到电容器。 电路产生的脉冲长度由时间常数电路确定的时间常数决定,三个独立的计数器存储由时间常数确定的脉冲数。 算术电路处理存储在计数器中的脉冲以确定物体上存在的背光的量。

    Photometric circuit
    5.
    发明授权
    Photometric circuit 失效
    光度电路

    公开(公告)号:US4980545A

    公开(公告)日:1990-12-25

    申请号:US278825

    申请日:1988-12-01

    摘要: A photometric circuit comprises a switching circuit which causes a photo conductive element which responds to the luminance of an object of measurement to be selectively connected with an oscillation circuit so that the photo conductive element functions as a frequency determining element and a frequency ratio calculating circuit which calculates a ratio of the oscillation frequency obtained when the photo conductive element is in connection with the oscillation circuit to the oscillation frequency obtained when the photo conductive element is not connected with the oscillation circuit. Thus, it is possible to reduce the required capacitance of the capacitor operating as a frequency determining element, lower the voltage required to drive the circuit and yet achieve high measuring accuracy.

    摘要翻译: 光度测量电路包括:切换电路,其使得响应于测量对象的亮度的光导体元件选择性地与振荡电路连接,使得光导体元件用作频率确定元件和频率比计算电路,其中, 计算当光导体与振荡电路连接时获得的振荡频率与当光导体未与振荡电路连接时所获得的振荡频率的比。 因此,可以减小作为频率确定元件工作的电容器的所需电容,降低驱动电路所需的电压,并且实现高测量精度。

    Rotation amount detecting device for rotation body, length measuring device and image forming apparatus
    6.
    发明授权
    Rotation amount detecting device for rotation body, length measuring device and image forming apparatus 有权
    用于旋转体的旋转量检测装置,长度测量装置和成像装置

    公开(公告)号:US08693009B2

    公开(公告)日:2014-04-08

    申请号:US12871422

    申请日:2010-08-30

    IPC分类号: G06K15/00

    摘要: A rotation amount detecting device for a rotation body includes: a first rotation body having a first surface; a second rotation body having a second surface formed of a material different from that of the first surface and contacting the first surface, and rotating with rotation of the first rotation body; a first support member rotatably supporting the first rotation body at a first position and supporting thereof to be swingable around a first axis at a position different from the first position; a second support member rotatably supporting the second rotation body at a second position and supporting thereof to be swingable around a second axis provided at a position different from the second position, the second axis being the first axis or an axis in the first support member other than the first axis; and a detector that detects a rotation amount of the second rotation body.

    摘要翻译: 旋转体旋转量检测装置包括:具有第一表面的第一旋转体; 第二旋转体,具有由与所述第一表面的材料不同的材料形成的第二表面,并且与所述第一表面接触并且随着所述第一旋转体的旋转而旋转; 第一支撑构件,其在第一位置处可旋转地支撑所述第一旋转体并且支撑所述第一支撑构件能够在与所述第一位置不同的位置处围绕第一轴线摆动; 第二支撑构件,其可旋转地支撑所述第二旋转体在第二位置并且支撑所述第二支撑构件,以围绕设置在与所述第二位置不同的位置的第二轴线摆动,所述第二轴线是所述第一支撑构件中的第一轴线或轴线, 比第一轴; 以及检测器,其检测第二旋转体的旋转量。

    Exposure device, image forming apparatus, exposure control method and computer-readable medium
    7.
    发明授权
    Exposure device, image forming apparatus, exposure control method and computer-readable medium 有权
    曝光装置,图像形成装置,曝光控制方法和计算机可读介质

    公开(公告)号:US08368734B2

    公开(公告)日:2013-02-05

    申请号:US12548964

    申请日:2009-08-27

    IPC分类号: B41J2/435 B41J2/47

    CPC分类号: H04N1/40056

    摘要: An exposure device includes a plurality of light-emitting elements, a lighting driver, a first storage, a reader, a shading correction unit and a second storage. The lighting driver drives and lights up the light-emitting elements based on image data. The first storage stores light amount unevenness correction values of the respective light-emitting elements. The reader reads the light amount unevenness correction values stored in the first storage. The shading correction unit executes shading correction for the light amount unevenness correction values read by the reader. The second storage stores correction values obtained by having the shading correction unit to execute the shading correction for the light amount unevenness correction values. The lighting driver controls light power of the respective light-emitting elements based on the correction values stored in the second storage.

    摘要翻译: 曝光装置包括多个发光元件,照明驱动器,第一存储器,读取器,阴影校正单元和第二存储器。 照明驱动器基于图像数据驱动并点亮发光元件。 第一存储器存储各个发光元件的光量不均匀校正值。 读取器读取存储在第一存储器中的光量不均匀性校正值。 阴影校正单元对读取器读取的光量不均匀性校正值执行阴影校正。 第二存储器存储通过使阴影校正单元执行光量不均匀校正值的阴影校正而获得的校正值。 照明驱动器基于存储在第二存储器中的校正值来控制各个发光元件的光功率。

    Exposure device, image forming apparatus and computer readable medium storing program for exposure control
    8.
    发明授权
    Exposure device, image forming apparatus and computer readable medium storing program for exposure control 有权
    曝光装置,图像形成装置和用于曝光控制的计算机可读介质存储程序

    公开(公告)号:US08022974B2

    公开(公告)日:2011-09-20

    申请号:US12568256

    申请日:2009-09-28

    IPC分类号: B41J2/435 B41J2/47

    摘要: An exposure device includes plural light emitting elements that light in turn for exposure, plural driving elements that drive each of the light emitting elements and a time changing member that changes one time period of a switching signal to switch light emitting elements driven by the driving elements among the plurality of light emitting elements in turn from a reference time, depending on an image forming speed, wherein the time changing member changes the one time period from the reference time for some of the light emitting elements during one main scan, and maintains the one time period as the reference time for the remaining light emitting elements.

    摘要翻译: 曝光装置包括依次曝光的多个发光元件,驱动每个发光元件的多个驱动元件和改变切换信号的一个时间周期的时间变化部件,以切换由驱动元件驱动的发光元件 根据图像形成速度,从参考时间开始,在多个发光元件中,其中时间变化部件在一个主扫描期间从一些发光元件的基准时间改变一个时间段,并且维持 一个时间段作为剩余发光元件的基准时间。

    Sheet measuring apparatus and image forming apparatus
    9.
    发明授权
    Sheet measuring apparatus and image forming apparatus 有权
    纸张测量装置和图像形成装置

    公开(公告)号:US08538311B2

    公开(公告)日:2013-09-17

    申请号:US13104520

    申请日:2011-05-10

    IPC分类号: G03G15/00 B41J21/00

    摘要: A sheet measuring apparatus includes a first rotating member including a first peripheral surface portion that contacts a transported sheet; a second rotating member including a second peripheral surface portion that contacts the first peripheral surface portion; a first rotation amount detecting unit that detects a first rotation amount of the first rotating member; a second rotation amount detecting unit that detects a second rotation amount of the second rotating member; a sheet calculation unit that obtains a first rotating member correction value for correcting an error that is superposed on the second rotation amount due to a radius distribution of the first rotating member and that performs calculation related to the transported sheet; a radius distribution calculating unit that calculates a new radius distribution of the first rotating member; and an updating unit that updates the first rotating member correction value to a new first rotating member correction value.

    摘要翻译: 一种片材测量装置,包括:第一旋转构件,包括与被传送片材接触的第一周面部分; 第二旋转构件,包括与所述第一周面部接触的第二周面部; 第一旋转量检测单元,其检测第一旋转构件的第一旋转量; 第二旋转量检测单元,其检测第二旋转构件的第二旋转量; 片材计算单元,其获得用于校正由于所述第一旋转构件的半径分布而叠加在所述第二旋转量上的误差的第一旋转构件校正值,并且执行与所运送的薄片相关的计算; 半径分布计算单元,计算第一旋转构件的新的半径分布; 以及更新单元,其将所述第一旋转构件校正值更新为新的第一旋转构件校正值。

    ABNORMALITY DETECTING DEVICE FOR ROTATION BODY AND IMAGE FORMING APPARATUS
    10.
    发明申请
    ABNORMALITY DETECTING DEVICE FOR ROTATION BODY AND IMAGE FORMING APPARATUS 有权
    异常检测用于旋转体和图像形成装置的装置

    公开(公告)号:US20110176159A1

    公开(公告)日:2011-07-21

    申请号:US12868319

    申请日:2010-08-25

    IPC分类号: G06K15/00

    摘要: An abnormality detecting device for a rotation body includes: a rotation body rotating while coming in contact with a sheet transported at a predetermined speed; an output unit outputting pulses of a number in proportion to a rotation amount of the rotation body; an acquisition unit acquiring periodic information associating a position of the rotation body during a single rotation and a period of each of the pulses corresponding to the position with each other, the periodic information being acquired based on the plural pulses outputted from the output unit along with the rotation of the rotation body at the predetermined speed; a memory storing the periodic information as reference periodic information; and an abnormality detector detecting an abnormality occurred in at least one of the rotation body and the output unit based on the reference periodic information and new periodic information acquired after the reference periodic information is acquired.

    摘要翻译: 用于旋转体的异常检测装置包括:旋转体,与以预定速度传送的片材接触而旋转; 输出单元,其输出与旋转体的旋转量成比例的数字的脉冲; 获取单元,获取将单个旋转期间的旋转体的位置与对应于该位置的每个脉冲的周期相关联的周期性信息,基于从输出单元输出的多个脉冲获取周期性信息,以及 旋转体以预定速度旋转; 存储周期性信息作为参考周期信息的存储器; 以及异常检测器,其基于参考周期信息和在获取参考周期信息之后获取的新的周期性信息来检测在所述旋转体和所述输出单元中的至少一个中发生的异常。