Digital proofing opens a new situation for cigarette pack proofing

Tobacco bag proofing has become a unique technical field in the industry due to its wide variety, complex color and fine elements. In order to pursue better sample effects, most traditional cigarette packs use spot color on the spot. Printing to get a flat, delicate print. However, a large number of spot colors, complex processes and versatile effects make the cost of cigarette pack proofing high for many years. However, with the introduction of digital proofing, the cost dilemma of traditional cigarette pack proofing has been solved to some extent. So, what are the advantages of digital proofing? How to use digital Printing technology to better achieve cigarette proofing? Below, the author is HP Indigo 5600 Digital printing machine, for example, answer it for everyone.

Insufficient four-color printing proofing

Before introducing digital proofing, it is necessary to understand why most of the cigarette packs are printed in spot color instead of four-color, for two main reasons.

First, the cigarette pack proofing process requires separate adjustment of multiple elements of the same hue.

Integrity, and four-color printing can only change the hue of the layout elements by adjusting the percentage of CMYK four-color dots. That is, to change the hue of the four-color printing layout elements, the four-color dot percentage of each element in the prepress file must be adjusted. Then, plate making, plate loading, and proofing, due to the diversity of substrates, may require multiple adjustments, so the waste of manpower and material resources is much greater than that of spot color printing.

Second, the pattern design on the surface of the cigarette pack usually contains many elements such as fine lines and tiny characters. If four-color printing is used, these fine lines and tiny characters must be presented by overprinting and color superposition. 0.03 ~ 0.08mm chromatography error exists between the printing press color groups, i.e., overprint even field lines, there will be no fixed chromatography deviation, resulting in a "double-fold" phenomenon (Figure 1).

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