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    • 7. 发明授权
    • Multicolor-printer and method of printing images
    • 多色打印机和打印图像的方法
    • US07216952B2
    • 2007-05-15
    • US10882381
    • 2004-07-02
    • David ClaramuntCarles FlotatsJose M Rio DovalRodrigo RuizFrancesc SubiradaMarc JansaXavier SolerFernando Juan
    • David ClaramuntCarles FlotatsJose M Rio DovalRodrigo RuizFrancesc SubiradaMarc JansaXavier SolerFernando Juan
    • B41J29/393
    • G03G15/5062B41J2/435G03G2215/0119G03G2215/0158
    • A multicolor-printer has at least a first and a second print station, first and second optical sensors and a surface recordings comparator. The first and second print stations are arranged to print images on a surface of a moving recording medium. The first and second optical sensors view, at the first and second print stations, an area of the recording medium surface to obtain at least one first surface recording, in a manner related to the first print station's image printing, and second surface recordings, respectively. A storage is arranged to store the first surface recording. The surface recordings comparator is arranged to test, during the recording medium movement, for correspondence of second surface recordings with the stored first surface recording. The printer is arranged to repeatedly, within one image, register raster lines of the image of the second print station to corresponding raster lines of the image of the first print station in response to correspondences found between the first and second surface recordings.
    • 多色打印机至少具有第一和第二印刷台,第一和第二光学传感器和表面记录比较器。 第一和第二打印站布置成在移动记录介质的表面上打印图像。 第一和第二光学传感器在第一和第二打印站处观察记录介质表面的区域,以分别以与第一打印站的图像打印相关的方式和第二表面记录来获得至少一个第一表面记录 。 存储器被布置成存储第一表面记录。 表面记录比较器布置成在记录介质运动期间测试第二表面记录与存储的第一表面记录的对应关系。 打印机被布置为在一个图像内重复地响应于在第一和第二表面记录之间找到的对应来将第二打印站的图像的光栅线记录到第一打印站的图像的相应光栅行。
    • 10. 发明申请
    • Method and system for printhead rotation detection using photosensors
    • 使用光电传感器进行打印头旋转检测的方法和系统
    • US20050067558A1
    • 2005-03-31
    • US10672913
    • 2003-09-25
    • Rodrigo RuizCarles FlotatsFrancesc Subirada
    • Rodrigo RuizCarles FlotatsFrancesc Subirada
    • B41J2/21H01J40/14
    • B41J2/2135
    • A method and apparatus is used to detect and compensate for printhead rotation in an inkjet printer. The detecting operation includes receiving an initial image of a pattern taken from a medium as the printhead passes over the medium, receiving a subsequent image of the pattern taken from the medium as the printhead continues to pass over the medium, comparing the initial image of the pattern and the subsequent image of the pattern taken from the medium and identifying a rotation of the printhead in the ink-jet printer passing over the medium if the comparison indicates the initial image of the pattern is rotated relative to the subsequent image of the pattern. The compensation operation includes modifying the timing settings associated with the firing of the nozzles in the inkjet printhead to compensate for the rotation of the printhead.
    • 使用方法和装置来检测和补偿喷墨打印机中的打印头旋转。 检测操作包括当打印头经过介质时接收从介质取出的图案的初始图像,当打印头继续通过介质时,接收从介质取出的图案的后续图像,比较第 图案和从介质取出的图案的后续图像,并且如果比较指示图案的初始图像相对于图案的后续图像旋转,则识别通过介质的喷墨打印机中的打印头的旋转。 补偿操作包括修改与喷墨打印头中的喷嘴的点火相关联的定时设置,以补偿打印头的旋转。