The Role Of Black Plate in Rolling Tipping Paper Color Separation

The role of black plate in Rolling Tipping Paper color separation

In theory, CMY can reproduce thousands of colors, including black. But this is for the ideal ink, the actual production of the ink we use from the ideal ink is still a certain gap. Specifically, the image printed by C, M, and Y is not "spirit", the density of the dark place is not good, the image contrast is insufficient, even if the black density generated by Y100%+C100%+M100% is not enough, and the black is not very black.

And in the photo printing, the density of the picture printed out by yellow, magenta and blue is not enough, the outline of the picture is unclear, the image contrast is insufficient, and it is not enough spirit. In order to make the image appear more spiritual, people add a black plate when printing, used to represent the outline of the image. Therefore, the black version is designed to make up for the lack of density caused by the reduction of high density (dark) area of the image with yellow, product and blue ink. At the same time, it can also improve and enhance the image outline.

Therefore, the black plate made for the reproduction of the dark area of the original manuscript, which acts as the outline and skeleton, is called the short tone black plate or the outline black plate.