N95 Mask Pad Printing Machine

Masking is the use of positive or negative images, taken from one or more of the set of colour-separation negatives and used in register with a given negative, to correct for the deficiencies in printing inks and colour of the copy.More generally in art history, especially sculpture, "mask" is the term for a face without a body that is not modelled in the round, but for example appears in low relief.Masks are used to produce a pattern on a substrate, normally a thin slice of silicon known as a wafer in the case of chip manufacturing. Several masks are used in turn, each one reproducing a layer of the completed design, and together they are known as a mask set.