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133 条记录 (耗时 0.021 秒)

    Rotatable focusing means and variable magnification electrophotocopier
    2.
    发明授权
    Rotatable focusing means and variable magnification electrophotocopier 失效
    可旋转聚焦装置和可变放大倍数的电子复印机

    公开(公告)号：US5146276A

    公开(公告)日：1992-09-08

    申请号：US122530

    申请日：1987-11-19

    申请人： Benzion Landa

    发明人： Benzion Landa

    IPC分类号： G03B27/36 ,  G03B27/50 ,  G03G15/041

    CPC分类号： G03B27/36 ,  G03B27/50 ,  G03G15/041

    摘要： A variable magnification electrophotographic copier wherein the ratio of object and image distances is changed by rotating a focusing device about an axis orthogonal to its optical axis. In a preferred embodiment, the focusing device is a refractive lens having a shape factor different from zero; the rotational axis intersects the optical axis; and the rotation angle is 180.degree. selectively to reverse the lens surfaces and provide images of two different magnifications each having minimum spherical aberration.

    摘要翻译： 一种可变放大型电子照相复印机，其中通过使聚焦装置围绕与其光轴正交的轴线旋转来改变物体和图像距离的比例。 在优选实施例中，聚焦装置是具有不同于零的形状因子的折射透镜; 旋转轴与光轴相交; 并且旋转角度选择性地为180度以反转透镜表面并且提供具有最小球面像差的两个不同放大率的图像。

    Magnification varying mechanism for image forming apparatus
    3.
    发明授权
    Magnification varying mechanism for image forming apparatus 失效
    成像装置的放大变化机构

    公开(公告)号：US4870453A

    公开(公告)日：1989-09-26

    申请号：US232443

    申请日：1988-08-15

    申请人： Kenichi Shimizu ,  Shigeru Suzuki

    发明人： Kenichi Shimizu ,  Shigeru Suzuki

    IPC分类号： G03B27/36

    CPC分类号： G03B27/36

    摘要： A copier for providing photographic copies of different sized originals, having an optical system variable for altering the magnification of an original, a scale member movable to locate the end of each respective size of original on the copier, and a link mechanism intercoupling the optical system and the scale to automatically vary the system magnification in accordance with the location of the scale.

    摘要翻译： 一种用于提供不同大小的原稿的照相副本的复印机，具有用于改变原稿放大率的光学系统变量，可移动以将每个相应尺寸的原稿的端部定位在复印机上的刻度部件，以及将光学系统 并根据刻度的位置自动改变系统放大倍数。

    Magnification varying device for electro-photographic copying machine
    4.
    发明授权
    Magnification varying device for electro-photographic copying machine 失效
    用于电子照相复印机的放大变化装置

    公开(公告)号：US4800414A

    公开(公告)日：1989-01-24

    申请号：US019560

    申请日：1987-02-27

    申请人： Katsuhiko Takeda

    发明人： Katsuhiko Takeda

    IPC分类号： G03G15/041 ,  G03B27/36 ,  G03B27/38

    CPC分类号： G03G15/041

    摘要： Improvements in a magnification varying device for electrophotographic copying machine of the mirror scan type to eliminate the drawbacks to be encountered and resulting in degraded copy images when the magnification varying range is increased, such as objectionable operative connection between a projection lens and a deflection mirror, and leakage of undesired light between the lens and a light blocking member around the path of travel of the lens. The present device includes an eccentric cam having the largest radius at a position for giving an equal magnification to assure smooth transmission of drive force to the deflection mirror, and a second light blocking member provided at each side of the lens and opposed to the mirror for preventing the objectionable light not blocked by the above blocking member from reaching the mirror when the lens is qat a position for a reduced magnification.

    摘要翻译： 用于镜像扫描型的电子照相复印机的放大倍数变化装置的改进，以消除在增大放大率变化范围时导致的复制图像的劣化，例如投影透镜和偏转镜之间的不良操作连接， 以及在透镜和透镜的行进路径周围的遮光构件之间的不期望的光的泄漏。 本装置包括在用于给予等倍率的位置处具有最大半径的偏心凸轮，以确保驱动力平滑地传递到偏转镜，以及设置在透镜的每一侧并与镜相对的第二遮光构件 防止当镜头处于缩小倍率的位置时上述阻挡构件未被阻挡的不良光线到达反射镜。

    Device for exposing discrete portions of a photosensitive surface by means of a light beam
    5.
    发明授权
    Device for exposing discrete portions of a photosensitive surface by means of a light beam 失效
    用于通过光束曝光感光表面的离散部分的装置

    公开(公告)号：US4653882A

    公开(公告)日：1987-03-31

    申请号：US835041

    申请日：1986-02-28

    申请人： Roland Cerf

    发明人： Roland Cerf

    IPC分类号： B41B13/00 ,  B41B17/06 ,  B41B21/22 ,  G03B27/34 ,  G03B27/36 ,  G03F1/00 ,  G03F1/02 ,  G03B41/00

    CPC分类号： G03B27/36 ,  B41B17/06 ,  B41B21/22

    摘要： The device comprises a lamp which directs a light beam to a photosensitive surface through symbols contained on a rotating disc, along a straight axis without changement of direction, the distance between the lamp and the sensitive surface being maintained constant. The device further comprises an enlarging objective movable along the optical axis and allowing to vary continuously the size of the projection of the symbols between two limits, namely between about 0.5 and 1.5 times the normal size of the symbols.

    摘要翻译： 该装置包括一个灯，其通过沿直线轴线容纳在旋转盘上的符号将光束引导到光敏表面，而不改变方向，灯和敏感表面之间的距离保持恒定。 该装置还包括可沿着光轴移动的放大物镜，并且允许在两个极限之间，即在符号的正常尺寸的大约0.5和1.5倍之间连续地改变符号的投影的尺寸。

    Compact full frame illumination and imaging system for a photocopier
    6.
    发明授权
    Compact full frame illumination and imaging system for a photocopier 失效
    紧凑型全框架照明和复印机成像系统

    公开(公告)号：US4466734A

    公开(公告)日：1984-08-21

    申请号：US536144

    申请日：1983-09-26

    申请人： James D. Rees

    发明人： James D. Rees

    IPC分类号： G03G15/041 ,  G03B27/36 ,  G03B27/38

    CPC分类号： G03G15/041

    摘要： A compact, full-frame flash illumination system is disclosed. In a unity mode of operation, a lens, mounted within a light housing, projects an image of a document onto a photoreceptor belt. In a reduction mode of operation, the lens is translated towards the photoreceptor along a non-linear path which maintains document registration at the image plane. Simultaneously, the platen is translated upward by a mechanical drive arrangement to maintain conjugate requirements.

    摘要翻译： 公开了一种紧凑的全帧闪光照明系统。 在统一的操作模式中，安装在灯壳内的透镜将文件的图像投影到感光带上。 在还原操作模式中，透镜沿着维持图像平面上的文档对准的非线性路径朝向感光体平移。 同时，压板由机械驱动装置向上平移以维持共轭要求。

    Variable magnification type copying machine
    7.
    发明授权
    Variable magnification type copying machine 失效
    变倍式复印机

    公开(公告)号：US4322159A

    公开(公告)日：1982-03-30

    申请号：US183709

    申请日：1980-09-03

    申请人： Sataro Takahashi ,  Ryota Ogawa ,  Yasunori Arai

    发明人： Sataro Takahashi ,  Ryota Ogawa ,  Yasunori Arai

    IPC分类号： G03B27/34 ,  G02B7/10 ,  G03B27/52 ,  G03G15/041 ,  G03B27/36 ,  G03B27/40 ,  G03B27/70

    CPC分类号： G03G15/041 ,  G03B27/526

    摘要： A variable magnification type copying system in which original can be duplicated with different magnification factors. Front and rear group lens systems are slidably mounted relative to one another upon front and rear frames which together make up a housing which is slidably mounted in the perpendicular direction upon a magnification unit frame. A stepping electric motor is mounted upon a plate which is rigidly coupled to the housing and slidably movable therewith. A pinion gear engaged with a pinion gear directly upon the output shaft of the motor is engaged with a rack of the rear frame. An L-shaped lever has a first end having a first cam follower held into abutment with a first cam rotatably mounted upon the output shaft of the motor and a second end connected to slidably move the front lens group by the front frame. A second cam is in abutment with a second cam follower upon the magnification unit to move the housing in the perpendicular direction.

    摘要翻译： 可变倍率型复印系统，其中原件可以用不同的放大系数重复。 前组和后组透镜系统在前框架和后框架上相对于彼此可滑动地安装，这些框架一起组成可在放大单元框架上以垂直方向可滑动地安装的壳体。 步进电动机安装在刚性地联接到壳体并且可滑动地移动的板上。 与马达的输出轴直接啮合的小齿轮的小齿轮与后框架的齿条啮合。 L形杠杆具有第一端，该第一端具有第一凸轮从动件，该第一凸轮从动件与可旋转地安装在电动机的输出轴上的第一凸轮保持抵接，第二端连接以通过前框架可滑动地移动前透镜组。 第二凸轮与放大单元上的第二凸轮从动件邻接以使壳体沿垂直方向移动。