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    • 5. 发明授权
    • Focus detecting device
    • 对焦检测装置
    • US5159383A
    • 1992-10-27
    • US757948
    • 1991-09-12
    • Tokuji IshidaKatsumi KozakaiMasataka Hamada
    • Tokuji IshidaKatsumi KozakaiMasataka Hamada
    • G02B7/34
    • G02B7/34
    • In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photo sensor arrays each having a plurality of photo cells lined up in one direction to receive a first image and second image passed through respectively a lens system and the photo sensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original signal groups are respectively divided into a plurality of blocks, and one of the blocks of the first original signal groups is selected and it is detected that in what group in the selected block best coincidence occurs.
    • 在用于检测物镜的聚焦条件的焦点检测系统中,设置一对光传感器阵列,每个光传感器阵列具有沿一个方向排列的多个光电池,以接收通过分别透镜系统的第一图像和第二图像, 光传感器阵列产生第一原始信号组和第二原始信号组,每个信号组对应于投射到其上的图像的光强度。 处理装置以这样的方式处理原始信号组,使得第一原始信号组分别被分成多个块,并且选择第一原始信号组的块中的一个,并且检测到在 选择块最佳重合。
    • 6. 发明授权
    • Security device for rental photocopying machines
    • 出租复印机的安全装置
    • US5142324A
    • 1992-08-25
    • US688663
    • 1991-04-18
    • Masazumi Ito
    • Masazumi Ito
    • G03G15/00G03G21/04
    • G03G15/55G03G21/04
    • An image forming apparatus having a device for forming an image on a copy sheet, an input device for designating a due data, a device for storing the due date designated through the input device and a mechanism for inhibiting an operation of the image forming device after a lapse of the designated due date stored in the storing device. The apparatus, when rented, enables a rental firm to supervise the rented apparatus by preventing an unauthorized or overdue use thereof through a service person who is to regularly visit the user and check the apparatus.
    • 一种图像形成装置,具有用于在复印纸上形成图像的装置,用于指定正当数据的输入装置,用于存储通过输入装置指定的到期日的装置以及用于禁止图像形成装置的操作的机构, 存储在存储装置中的指定到期日的经过。 该装置在租赁时,能够通过防止未经授权或逾期使用的租赁公司通过定期访问用户并检查设备的维修人员来监督租赁的设备。
    • 7. 发明授权
    • Transfer device for duplex copier using a single charger and transfer
belt
    • 使用单个充电器和转印带的双面复印机传送设备
    • US5138363A
    • 1992-08-11
    • US662767
    • 1991-02-28
    • Shizuo Yuge
    • Shizuo Yuge
    • G03G15/00G03G15/16G03G15/23
    • G03G15/232G03G15/1605G03G2215/1661
    • A polarity inverting charger is provided at the location between developing position of a photoconductor and transfer position to invert the polarity of a toner image formed on the photoconductor after a first image is transferred onto an intermediate transfer belt from the photoconductor. A transfer charger is actuated with opposite polarity to that of the polarity when the first toner image is transferred onto the intermediate transfer belt to transfer the first toner image on the intermediate transfer belt onto a second surface of a transfer sheet simultaneously when a polarity inverted second image on the photoconductor is transferred onto a first surface of the transfer sheet.
    • 极性反转充电器设置在光电导体的显影位置和转印位置之间的位置,以在将第一图像从感光体转印到中间转印带上之后反转形成在感光体上的调色剂图像的极性。 当第一调色剂图像转印到中间转印带上时,将转印充电器的极性与极性相反极化地驱动,以将转印带上的第一调色剂图像同时转印到转印纸的第二表面上 感光体上的图像被转印到转印纸的第一表面上。
    • 9. 发明授权
    • Image reading apparatus
    • 图像读取装置
    • US5079638A
    • 1992-01-07
    • US375728
    • 1989-07-05
    • Masamichi KishiMunehiro NakataniHiroya Sugawa
    • Masamichi KishiMunehiro NakataniHiroya Sugawa
    • H04N1/40H04N1/405H04N1/407
    • H04N1/40062H04N1/4072
    • An image reading apparatus having a high-contrast mode of operation for reading character images and a halftone mode of operation for reading halftone images, including an image sensor converting optical image information into electric signals, an optical system for projecting an image on a document onto the image sensor, a threshold signal generator capable of generating a plurality of first threshold signals and operative to output one of the first threshold signals, a threshold signal generator capable of generating a plurality of second threshold signals and operative to output one of the second threshold signals, a mode selector circuit for selecting the high-contrast or halftone mode of operation, a density selector circuit for selecting the first threshold signal during the high-contrast mode of operation and the second threshold signal during the halftone mode of operation, and a combination of circuit networks for outputting halftone image signals during the high-contrast mode of operation on the basis of the electric signals from the image sensor and the first threshold signal from the first threshold signal generator and outputting high-contrast image signals during the halftone mode of operation on the basis of the electric signals from the image sensor and the second threshold signal from the second threshold signal generator.
    • 一种用于读取字符图像的高对比度操作模式的图像读取装置和用于读取半色调图像的半色调操作模式,包括将光学图像信息转换成电信号的图像传感器,用于将文档上的图像投影到 所述图像传感器是能够产生多个第一阈值信号并且可操作地输出所述第一阈值信号之一的阈值信号发生器,能够产生多个第二阈值信号并且可操作以输出所述第二阈值之一的阈值信号发生器 信号,用于选择高对比度或半色调操作模式的模式选择器电路,用于在高对比度操作模式期间选择第一阈值信号的密度选择器电路和在半色调操作模式期间的第二阈值信号, 用于在高对比度模式期间输出半色调图像信号的电路网络的组合 基于来自图像传感器的电信号和来自第一阈值信号发生器的第一阈值信号的操作,并且基于来自图像传感器的电信号和在半色调操作模式期间输出高对比度图像信号 来自第二阈值信号发生器的第二阈值信号。
    • 10. 发明授权
    • Compact lens system operable in different mediums
    • 紧凑型镜头系统可在不同介质中操作
    • US4346966A
    • 1982-08-31
    • US167119
    • 1980-07-09
    • Akiyoshi NakamuraToshinobu OguraMasahide Tanaka
    • Akiyoshi NakamuraToshinobu OguraMasahide Tanaka
    • G02B13/04G02B9/64G02B13/00
    • G02B13/00G02B9/64
    • The present invention is directed to a compact lens system equally operable in both air and water, comprising a first lens group having a front surface directly facing the air or water medium, the center of the curvature of the front surface being located approximately at the entrance pupil of the lens system, and a second lens group located at the image side of the first lens group with an air space formed between the first and second lens groups. The air space and design parameters being selected in the lens system so that the field curvature of the lens system is mainly changed without any substantial change in other aberrations when the air space is changed, wherein the air space is changeable by a predetermined value in response to the change between use in air and use under water for maintaining a relatively flat image surface.
    • 本发明涉及一种在空气和水中均等可操作的紧凑型透镜系统,包括具有直接面向空气或水介质的前表面的第一透镜组,前表面的曲率中心大致位于入口 以及位于第一透镜组的像侧的第二透镜组,在第一透镜组和第二透镜组之间形成空气空间。 在透镜系统中选择空气空间和设计参数,使得当空间变化时主要改变透镜系统的场曲率而没有其它像差的任何实质变化,其中空间可响应于预定值 在空气中使用和在水下使用以保持相对平坦的图像表面之间的变化。