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    • 7. 发明授权
    • Position encoding system and method using a composite codestrip
    • 位置编码系统和方法使用复合码流
    • US5992969A
    • 1999-11-30
    • US657722
    • 1996-05-30
    • Marcos Arminana TerrasaJose Manuel Diez San Martin
    • Marcos Arminana TerrasaJose Manuel Diez San Martin
    • B41J19/20G01D9/38G06K15/22B41J23/00
    • G06K15/22B41J19/207G01D9/38
    • An elongated encoder-strip scale, most typically plastic, is secured to an elongated encoder-strip substrate, most typically metal. The scale has indicia that are at least partially exposed for use in determining the position of a carriage with respect to a chassis in a large-format automatic image-related device--which may be for example a printer, a plotter, or a scanner. The chassis of the image-related device supports an image-bearing sheet, and the carriage scans across the chassis carrying apparatus for forming or sensing marks on the sheet. Preferably the scale is taller than the substrate and mounted to overlap both edges of the substrate, guarding the edges of the substrate. The scale is preferably substantially transparent and mounted for transmission of an optical beam. The substrate is preferably tensioned across the chassis (preferably at a tension under which the scale alone would fail) and threaded, with the scale, through an aperture in the carriage--even during scanning. The scale is preferably without direct support by the chassis. Preferably the scale or substrate, or both, are used in common--but in different relative positions--in more than one model of image-related device.
    • 细长的编码器条尺,最典型地是塑料,被固定到细长的编码器条带基底,最典型的是金属。 刻度尺具有至少部分暴露的标记,用于在大幅面自动图像相关设备(其可以是例如打印机,绘图仪或扫描仪)中确定托架相对于机架的位置。 图像相关装置的底盘支撑图像承载片材,并且托架扫过底盘承载装置以形成或感测片材上的标记。 优选地,刻度比基板高,并且安装成与基板的两个边缘重叠,保护基板的边缘。 该标尺优选地基本上是透明的并被安装用于透射光束。 优选的是,衬底优选地跨越底座(优选地是在其上仅刻度刻度的张力处)被张紧,并且与刻度线一起穿过托架中的孔,即使在扫描期间也是如此。 比例尺最好不由底盘直接支撑。 优选地,在多于一个图像相关装置的模型中,刻度尺或基板或两者在共同但不同的相对位置中使用。