This is called a colour proof and the progress of making it is proofing or proving.
这份样图便称作彩色校样，而制作这种彩色校样的作业便称作打样或试印。
The proof is in your colour printer cartridges. They come in cyan, yellow and magenta, which are the true primary colours.
如果不信的话你可以去看看你打印机里的彩墨，它们一定是青色，黄色和品红色：真正的三基色。
Flint papers: A base paper coated one side with a colour and afterwards hard burnished or flint glazed to produce a high gloss, water-proof surface.
蜡光纸：在基纸一面，图上颜色涂料，然后用燧石打磨成有光泽、防水的纸。
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