To produce a multicoloured map a separate printing plate is required for each colour of ink. 为了制作一幅多色地图，需要制作适用于各色印刷油墨的印刷板。
Rapid technological advances in printing during the past fifty years brought about changes in the composition and manufacture of printing ink. 过去的五十年中，高速发展的印刷技术使印刷油墨的全盛与制造发行了变化。
