| 摘要 |
<p>A master chart comprises a representation of various blocks (1) of colour produced by suitable combinations of the base colours cyan, magenta, yellow and black (C, M, Y, K). There are also illustrations of colour prints (2) which are to be printed by a copying machine onto a sheet. For the colour standardisation procedure test sheets are provided onto which the images from the master chart are to be printed. These carry the same array of colour blocks (1A) and picture representations (2A) but the block and colour representations are offset with respect to the positioning of the corresponding blocks on the master chart. The operator can compare the various colour blocks against one another and make an estimation as to what adjustments are needed to the copier to ensure that a more acceptable print is achieved. The test sheet could incorporate holes adjacent to each of the colour patches through which the colour patches from the master chart can be viewed.</p> |
