Document reading apparatus
    1.
    发明授权
    Document reading apparatus 失效
    文件阅读器

    公开(公告)号:US5001566A

    公开(公告)日:1991-03-19

    申请号:US337851

    申请日:1989-02-24

    摘要: The original documents of A4 or A3 format are selectively read by a scanning apparatus which is integrated into a system for producing and transmitting images. The originals of A4 format are normally positioned on a fixed exposure surface and the originals of A3 format are introduced into a separate device for transporting documents, which is adjacent to the fixed exposure surface. A carriage with lamps is slidable below the exposure surface to illuminate the A4 original while to illuminate the A3 original the carriage is positioned into a fixed position corresponding to the separate reading device where the original A3 is slid with respect to the carriage past an exposure zone. The reflected images of the originals are passed by means of mirrors mounted on the carriage to a lens which reflects them on to a photodetector device which converts the light rays into digital electrical signals. To adjust the focal lengths of the lens to the various dimensions of the A3 and A4 formats and to compensate for the different distances (difference D) of the two types of originals from the lens, two of the mirrors are mounted on an auxiliary frame which is movable on the carriage. The auxiliary frame is displaced by its own motor and a lead-screw to different positions in relation to the type of original which is to be read.

    Dot matrix printing method and printer therefor
    2.
    发明授权
    Dot matrix printing method and printer therefor 失效
    点阵打印方法和打印机

    公开(公告)号:US4549222A

    公开(公告)日:1985-10-22

    申请号:US471349

    申请日:1982-03-02

    摘要: The method enables images recorded with different definitions to be printed by the same printer, and the information to be printed with maximum print definitions. For this purpose, the print definitions (dots per mm) is a common multiple of the possible recording definitions. The information to be printed is extracted from a signal generator with a frequency corresponding to the recording definition, and is repeated in accordance with the multiple. For example with a print definition of 24 dots/mm defined by a row and column grid L1, L2, etc., C1, C2, etc., a character definition of 8 dots/mm is obtained by printing each dot three times in each row and repeating each row a further two times. The printer, which is therefor suitable for various purposes, for example as a word processor printer and as a facsimile printer, repeatedly prints each dot, along the horizontal and/or along the vertical, for a number of times corresponding to the multiple, to provide a line continuity and an improved image resolution. The printer used may be of electrophotographic type, with the printing element provided by a laser generator.

    摘要翻译: 该方法可以使用不同定义录制的图像由相同的打印机打印,以及要打印的信息具有最大的打印定义。 为此,打印定义(每毫米点数)是可能记录定义的通用倍数。 要从具有对应于记录定义的频率的信号发生器提取要打印的信息,并且根据倍数重复。 例如,通过由行和列网格L1,L2等,C1,C2等定义的24点/ mm的打印定义,通过在每个点中打印每个点三次来获得8点/ mm的字符定义 行和每行重复两次。 适用于各种目的的打印机例如作为文字处理器打印机和作为传真打印机,沿着水平和/或沿着垂直方向重复地打印每个点多次,对应于该多个,多次, 提供线路连续性和改进的图像分辨率。 使用的打印机可以是电子照相式的,其中打印元件由激光发生器提供。

    Apparatus for reading and digital processing of color images
    3.
    发明授权
    Apparatus for reading and digital processing of color images 失效
    彩色图像的读取和数字处理装置

    公开(公告)号:US4954888A

    公开(公告)日:1990-09-04

    申请号:US309085

    申请日:1989-02-06

    CPC分类号: H04N1/62 H04N1/56

    摘要: The apparatus for reading and digital processing of color images comprises groups of CCD sensing elements for reading the individual pixels forming the image. Each group of the sensing elements is associated with one primary color, for generating corresponding reading signals, which control a color indication circuit generating a color indicatory signal for indicating the presence of any color in the image. The colour indicator signal is derived from a table of zones of colours which is recorded in a ROM and can be addressed by the reading signals of the various colours, input from corresponding reading elements via compensation circuits. The colour signal is capable of controlling second selective scanning of document for recording the reading signals for all the primary colours of the image. The ROM is also capable of providing an indication of the mixture of colours of each pixel, which is compared to a predetermined mask for the purposes of suppressing a particular mixture of colours from the recording.

    Apparatus for reading and reproducing graphic information
    4.
    发明授权
    Apparatus for reading and reproducing graphic information 失效
    用于读取和再现图形信息的装置

    公开(公告)号:US4683501A

    公开(公告)日:1987-07-28

    申请号:US783352

    申请日:1985-10-03

    摘要: A device for reading graphic symbols impressed on a sheet, comprising light sources for illuminating the sheet, an optical reading system and an array of photo-electric sensors for generating electrical reading signals. The device is compact in structure and of small dimensions, so as to allow it to be mounted upon the head-carrying carriage of a printing machine or typewriter. The device makes it possible to create, in a particularly simple form, reading apparatus for facsimiles or for optical character recognition (OCR) reading apparatus for memorizing signatures, graphical symbols and drawings or mathematical symbols, or apparatus for copying documents.

    摘要翻译: 用于读取印在片材上的图形符号的装置,包括用于照射片材的光源,光学读取系统和用于产生电子读取信号的光电传感器阵列。 该装置结构紧凑,尺寸小,以便将其安装在印刷机或打字机的头架上。 该装置可以以特别简单的形式创建用于传真机的读取装置或用于存储签名,图形符号和附图或数学符号的光学字符识别(OCR)读取装置或用于复制文档的装置。

    Electromagnetic line spacing device
    5.
    发明授权
    Electromagnetic line spacing device 失效
    电磁线间距装置

    公开(公告)号:US4255063A

    公开(公告)日:1981-03-10

    申请号:US920060

    申请日:1978-06-28

    CPC分类号: H02K7/065 B41J19/92 H01F7/145

    摘要: A platen for a typewriter, is rotated intermittently by pulsing a winding to establish flux between poles of a stator and a rotor, which rotates through a fixed angle and then back to a datum position under the action of a spring. The magnetic flux also engages an electro magnetic clutch formed by the rotor and a part rotationally fast with the platen so that the platen is rotated only during the forward rotation of the rotor. The stator, rotor and said part are all coaxial with the platen and may be housed inside the platen.

    摘要翻译: 用于打字机的压板通过脉冲绕组间歇地旋转,以在定子和转子的磁极之间建立磁通,其在弹簧的作用下旋转固定的角度然后回到基准位置。 磁通量还与由转子形成的电磁离合器和与压板旋转地快速的部分接合,使得压板仅在转子正向旋转期间旋转。 定子,转子和所述部分都与压板同轴并且可以容纳在压板内。

    Arrangement for guiding and shifting a carriage of an office machine
    6.
    发明授权
    Arrangement for guiding and shifting a carriage of an office machine 失效
    用于引导和移动办公机器的托架的布置

    公开(公告)号:US4651229A

    公开(公告)日:1987-03-17

    申请号:US787126

    申请日:1985-10-15

    申请人: Giuseppe Coli

    发明人: Giuseppe Coli

    摘要: The carriage of a digital document reader is shifted by means of a pair of worms rotatable in the frame and engaging two nuts borne by the carriage. The worms are rotated simultaneously, e.g. by a single stepping motor and a toothed belt engaging a pulley or by two separate stepping motors. For the purpose of reducing inertia, each worm is formed together with the driving pulley by moulding a layer of plastics material on a metal core tube which is formed with a shallow groove of coarse pitch to anchor the plastics layer. Each nut, also of plastics material, is formed with a series of axial notches which define an equal number of elastic sectors which allow any play on the worm due to wear to be taken up.

    摘要翻译: 数字文档阅读器的滑架借助于可在框架中旋转的一对蜗杆移动,并接合由托架承载的两个螺母。 蠕虫同时旋转,例如 通过单个步进电机和啮合滑轮或由两个单独的步进电动机的齿形带。 为了减小惯性,通过在金属芯管上模制一层塑料材料,每个蜗杆与驱动皮带轮一起形成,该金属芯管形成有粗节距的浅槽以锚定塑料层。 每个也是塑料的螺母形成有一系列轴向凹口,这些凹口限定了相等数量的弹性部分,这些弹性部分允许由于磨损而使蜗杆上的任何部位被卷起。

    Color image reproducing apparatus with sheet feeding device for
recirculating a sheet on which dots of different colors are
sequentially recorded
    7.
    发明授权
    Color image reproducing apparatus with sheet feeding device for recirculating a sheet on which dots of different colors are sequentially recorded 失效
    彩色图像再现装置具有用于再循环其上顺序记录有不同颜色的点的片材的片材进给装置

    公开(公告)号:US4651198A

    公开(公告)日:1987-03-17

    申请号:US577341

    申请日:1984-02-06

    摘要: A trichromatic photosensor scans an image to be reproduced repeatedly to generate, for each elementary area scanned, signals indicative of the chromatic characteristics of this elementary area. The photosensor is connected to a trichromatic printer controlled by the signals produced by the photosensor for printing corresponding colored dots on the paper. During successive scanning operations, the photosensor is moved relative to the color image and the printer is moved relative to the paper. These relative movements are coordinated with each other so that the photosensor and the printer act simultaneously on corresponding regions of the color image and of the paper. In one embodiment the printer is stationary and is capable of printing in parallel the dots of one line. The paper circulates along a closed path to be sequentially printed according to the various color components. In another embodiment the printer is of the serial type. The printing carriage mounts also the photosensor and moves transversely the printer and the photosensor to repeatedly scan the printing line.

    摘要翻译: 三色光电传感器扫描要重复再现的图像,以对于每个扫描的基本区域产生指示该基本区域的色彩特性的信号。 光电传感器连接到由光电传感器产生的信号控制的三色打印机,用于在纸上打印相应的彩色点。 在连续扫描操作期间,光电传感器相对于彩色图像移动,并且打印机相对于纸移动。 这些相对运动彼此协调,使得光电传感器和打印机在彩色图像和纸张的相应区域上同时作用。 在一个实施例中,打印机是静止的并且能够平行地打印一行的点。 纸张沿封闭路径循环,根据各种颜色分量依次打印。 在另一个实施例中,打印机是串行类型的。 打印托架还安装光电传感器,并横向移动打印机和光电传感器,以反复扫描打印线。

    Reproducing machine having a removable process unit
    8.
    发明授权
    Reproducing machine having a removable process unit 失效
    具有可移除处理单元的再生机

    公开(公告)号:US4566779A

    公开(公告)日:1986-01-28

    申请号:US577357

    申请日:1984-02-06

    摘要: In a reproducing machine the photoconductive member, in the form of an endless belt, and the developing station are carried in a container or cartridge removably mounted on the machine. The photoconductive belt surrounds a support structure integral with the cartridge. The support structure includes a resilient portion engaging the photoconductive belt to keep it under tension around the structure. A magnetic belt of tubular form, fixed within the cartridge, is surrounded by a sleeve of non-magnetic material. The magnetic belt is so magnetized as to form a regular distribution of pairs of magnetic poles of opposite polarity. The toner adheres by magnetic action on the external surface of the sleeve to form a magnetic brush of the developing station.

    摘要翻译: 在再生机中,环形带形式的感光体和显影台被携带在可移除地安装在机器上的容器或盒中。 感光带包围与盒一体的支撑结构。 支撑结构包括接合感光带的弹性部分,以使其在结构周围处于张力下。 固定在筒内的管状磁带被非磁性材料的套筒包围。 磁带被磁化以形成具有相反极性的成对磁极的规则分布。 调色剂通过磁力作用粘附在套筒的外表面上以形成显影站的磁刷。