标准摘要
[中文适用范围]： GB/T 20493 的本部分规定了用 GB/T 20493.1-2006 所规定的标板以及其他标板对办公文件黑白反射扫描输出质量在其使用期间的最后一致性进行评价的测试方法。 本部分适用于评价黑白或彩色办公文件（无论其是否具有半色调或彩色）用黑白扫描器扫描的输出质量。 本部分不适用于彩色扫描器或扫描透明或半透明文件用的扫描器。 [外文原描述]： This part of ISO 12653 specifies test methods for evaluating the consistency of the output quality over time from the black-and-white reflection scanning of office documents using the test target specified in ISO 12653-1 and other targets. It is applicable to assessing the output quality of black-and-white scanners used for black-and-white or colour office documents, with or without half-tone or colour. It does not apply to colour scanners or scanners used for the scanning of transparent or translucent documents.
英文名称Electronic imaging — Test target for the black-and-white scanning of office documents — Part 2: Method of use