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公开(公告)号：US5949922A
公开(公告)日：1999-09-07
申请号：US948084
申请日：1997-10-09
CPC分类号： G06K9/3216 , H04N1/047 , H04N1/1013 , H04N1/193 , H04N2201/04729 , H04N2201/04789
摘要： First and second patterns are located outside of an image reading area. A first pattern comprises a plurality of lines each extending at a fixed angle with respect to a sub-scan direction. A second pattern comprises a plurality of lines each extending at a fixed angle but having a reverse direction with respect to the sub-scan direction. An image reading portion reads the first and second patterns. A position error measuring portion measures first and second image reading position errors corresponding to different angle oblique lines of the first and second patterns of image data obtained as a result of reading the first and second patterns, respectively. The position error measuring portion compensates for position deviations of the first and second patterns using the first and second image reading position errors, and obtains position-deviation-compensated image reading position errors. A position error correcting portion corrects image data read by the reading means using the position-deviation-compensated image reading position errors.
摘要翻译： 第一和第二图案位于图像读取区域的外部。 第一图案包括多个相对于副扫描方向以固定角度延伸的线。 第二图案包括多个线，每条线以固定的角度延伸但是具有相对于副扫描方向的相反方向。 图像读取部分读取第一和第二图案。 位置误差测量部分分别测量作为读取第一和第二图案的结果而获得的第一和第二图案数据的不同角度斜线对应的第一和第二图像读取位置误差。 位置误差测量部分使用第一和第二图像读取位置误差补偿第一和第二图案的位置偏差，并获得位置偏移补偿图像读取位置误差。 位置误差校正部分使用位置偏移补偿图像读取位置误差校正由读取装置读取的图像数据。
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2.发明授权
公开(公告)号：US5010372A
公开(公告)日：1991-04-23
申请号：US398916
申请日：1989-08-28
CPC分类号： G03G15/5008 , G03G15/01 , G03G2215/0174
摘要： In a copying machine for both black-and-white and color, a latent image of an original is formed in a photosensitive device by scanning the original by a scanning optical system and is developed by a black or color toner and is thereafter transferred onto a transfer paper held on transfer device rotated in proximity to the photosensitive device to provide a copy of the original. The copying machine includes a first drive unit for driving the scanning optical system; a second drive unit for driving the photosensitive device; a third drive unit for driving the transfer device; and a drive condition setting device for judging a designated copy mode and for giving the speeds of the respective drive units which are suitable for the designated copy mode.
摘要翻译： 在用于黑白和彩色的复印机中，通过用扫描光学系统扫描原件，在感光装置中形成原稿的潜像，并通过黑色或彩色调色剂显影，然后转印到 在转印装置上保持的转印纸在感光装置附近旋转以提供原稿的副本。 复印机包括用于驱动扫描光学系统的第一驱动单元; 用于驱动光敏装置的第二驱动单元; 用于驱动所述传送装置的第三驱动单元; 以及驱动条件设置装置，用于判断指定的复制模式并给出适合于指定的复制模式的各个驱动单元的速度。
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公开(公告)号：US5327260A
公开(公告)日：1994-07-05
申请号：US980964
申请日：1992-11-24
CPC分类号： G06K15/1223
摘要： An image processing system for smoothing edges of an image, includes a sampling part for sampling a group of dots from an image having a plurality of input black and white dots, the group of dots having a target dot at the center of a region and being sampled for each dot of the image, a recognition part for recognizing a dot pattern from the sampled dots, the dot pattern described by successive black dots and located at a boundary between a black dot region and a white dot region, and for producing code signals from the result of the recognition to define features of the dot pattern for each target dot, a discrimination part for detecting whether or not each target dot is part of an inclined line having a gradient relative to horizontal or vertical direction in response to the code signals, thus determining whether or not each target dot is to be corrected, a correction part with a memory, for inputting the code signals to the memory as address inputs when the dot is to be corrected, and for outputting a corresponding correction dot data from the memory in accordance with the code signals, and an output part for outputting an image with corrected dots which are in accordance with the correction dot data of the correction part.
摘要翻译： 一种用于平滑图像边缘的图像处理系统，包括：采样部分，用于从具有多个输入黑白点的图像中采样一组点，所述一组点在一个区域的中心具有目标点，并且是 对于图像的每个点进行采样，用于从采样点识别点图案的识别部分，由连续的黑点描述并位于黑点区域和白点区域之间的边界处的点图案，以及用于产生代码信号 从识别结果来定义每个目标点的点图案的特征;判别部分，用于根据代码信号检测每个目标点是否相对于水平或垂直方向具有梯度的倾斜线的一部分 ，从而确定是否要校正每个目标点，具有存储器的校正部分，用于当要校正点时将代码信号输入到存储器作为地址输入， 并且用于根据代码信号从存储器输出相应的校正点数据;以及输出部分，用于输出具有校正点的与修正部分的校正点数据相符的图像。
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公开(公告)号：US4766463A
公开(公告)日：1988-08-23
申请号：US64542
申请日：1987-06-22
CPC分类号： G03G15/6529 , G03G15/1655 , G03G15/50 , G03G2215/0196
摘要： An image forming apparatus has a latent image carrier for carrying an electrostatic latent image formed thereon. The electrostatic latent image is developed into a visible image which is transferred from the latent image carrier onto a transfer sheet in an image transfer region. The transfer sheet is held on a drum-shaped or a belt-shaped holder with the leading end clamped by a clamp. For efficient image formation, the holder is accelerated and decelerated while the transfer sheet is out of the image transfer region. When the transfer sheet with the transferred image thereon is sent to an image fixing device, the holder is accelerated and decelerated during an interval after the trailing end of the transfer sheet has left the image transfer region and before the leading end of the transfer sheet reaches the image fixing device. After the holder has been accelerated and decelerated, it is positionally adjusted when required.
摘要翻译： 图像形成装置具有用于承载形成在其上的静电潜像的潜像载体。 将静电潜像显影成从潜像载体转印到图像转印区域中的转印片上的可见图像。 转印片保持在鼓形或带状保持器上，前端用夹具夹紧。 为了有效的图像形成，当转印纸不在图像转印区域内时，保持器被加速和减速。 当其上具有转印图像的转印纸被发送到图像定影装置时，保持器在转印纸的后端离开图像转印区域之后并且在转印纸的前端到达之前的间隔期间被加速和减速 图像定影装置。 持有人加速减速后，必要时进行位置调整。
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