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Abstract: |
In the gravure packaging and printing industry, with plastic film as the main printing materials, ink quantity plays an important role. Currently, ink quantity evaluation usually depends on human with naked eyes. Although the method is easily to carry out, to the same original image, the results usually differ from the practical ones. In the research, processed gray prepress digital images to be input into plate making device are considered, with image block processing theory, according to parameters such as screening lines, dot shape, and ink density and so on, the ink quantity of the original image printed on the printing sheet is figured out. Similarly, batch printed sheets ink quantity could be calculated. The experiment shows that the evaluated ink quantity reaches rather high exactitude, approaches factual ink quantity in the printing workroom with fairly high precision.
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