Offset printing process and printed matter

Abstract

The invention discloses an offset printing process and a printed matter.The offset printing process comprises the following steps that surface treatment is conducted on a printing stock through papersealing oil; a cold stamping film is compounded on the surface of the printing stock; white ink is printed on the cold stamping film on the printing stock; black ink and blue ink are printed on the printing stock, and then drying is carried out by adopting a UV photocuring lamp; and after red ink and yellow ink are printed on the printing stock, the UV photocuring lamp is adopted for drying. According to the offset printing process, surface treatment is conducted on the printing stock through the paper sealing oil, and the printing performance of the printing stock can be improved; the cold stamping film not only can increase the printing thickness, but also can perform secondary tight sealing on the surface of the printing stock, so that infiltration of four-color ink is reduced; white ink is printed on the cold stamping film, so that the surface printing performance of a cold stamping part can be improved, and the thickness of a printing ink layer can be further increased; and the photocuring lamp is additionally arranged in the printing process for drying, ink pulling can be effectively reduced, and the thickness of the four-color ink layer is increased.

Description

technical field [0001] The invention relates to the field of lithographic printing, more specifically, 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, which leads to the lack of three-dimensional effect and poor texture of offset printing products. However, offset printing has the advantages of diversified inks and multiple levels of dot changes. Offset printing products have rich color levels and a wide color gamut that can be presented. [0003] Taking UV four-color printing as an example, UV four-color printing prints black, blue, red, and yellow four-color inks on the paper in sequence. After the four-color ink printing is completed, the UV light curing lamp is turned on during the paper delivery process. The total thickness of the ink layer At most it is the sum of the four color ink l...

AI Technical Summary

Problems solved by technology

[0004] For printed matter that has a wide color gamut and high printing thickness requirements