Offset printing process and printed matter

Abstract

The invention discloses an offset printing process and a printed matter, wherein the offset printing process comprises the following steps: using sealing paper oil to perform surface treatment on the printed matter; compounding a cold foil on the surface of the substrate; printing white ink on the cold foil on the substrate ; After printing black ink and blue ink on the substrate, use UV curing lamp to dry; after printing red ink and yellow ink on the substrate, use UV curing lamp to dry. In the offset printing process of the present disclosure, sealing paper oil is used to treat the surface of the substrate, which is beneficial to improve the printing performance of the substrate; the cold foil can not only increase the printing thickness, but also can seal the surface of the substrate twice, reducing four-color printing. The infiltration of ink; printing white ink on the cold foil film can not only improve the surface printing performance of the cold foil part, but also further increase the thickness of the printing ink layer; increase the drying of the light curing lamp in the middle of the printing color, which can effectively reduce the ink pull-up and increase four colors The thickness of the ink layer.

Description

technical field [0001] The invention relates to the field of lithography, and more particularly, to an offset printing process and printed matter. Background technique [0002] Whether it is UV printing or ordinary printing, the existing offset printing process is limited by the printing plate and the printing thickness is small, resulting in a weak three-dimensional effect and poor texture of the offset printing product. However, offset printing has the advantages of diversification of inks and multiple levels of dot changes. Offset printing products have rich color levels and can present a wide color gamut. [0003] Taking UV four-color printing as an example, UV four-color printing prints black, blue, red, and yellow inks on the paper in turn. After the four-color ink printing is completed, the UV light curing lamp is turned on during the delivery process, and the total thickness of the ink layer is At most, it is the sum of the four-color ink layers. Moreover, the ink ...

AI Technical Summary

Problems solved by technology

[0004] For printed matter that has a wide color gamut and high printing thickness requirements, the existing offset printing process is difficult to meet the printing thickness requirements