Method for printing bar codes on iridescent paper

Abstract

The invention discloses a method for printing bar codes on iridescent paper. The method comprises the following steps of: making films with the bar code pattern into a PS (Photoshop) printing plate; making a on-the-spot bar code pattern 1 to 2 mm longer than each side of the bar code pattern and making a photosensitive resin flexographic plate with the on-the-spot bar code pattern; printing a layer of UV (Ultra Voilet) base oil on the iridescent paper by utilizing an offset press and a polishing set and irradiating the printed UV base oil for drying through an infrared lamp; printing a layer of bar codes at the position the UV base oil printed on the surface of the iridescent paper by utilizing an offset press first set and irradiating for solidification and drying through an ultraviolet lamp; and printing a layer of UV gloss oil or UV matt oil on the solidified and dried surface of the bar codes, and solidifying and drying the printed UV gloss oil or the UV matt oil through the ultraviolet lamp to obtain the iridescent paper printed with the bar codes. The method has the characteristic of less printing process failure; and the bar codes printed on the iridescent paper according to the method has the characteristics of smooth ink layers, good hand touch and easy recognition.

Description

technical field [0001] The invention belongs to the technical field of pearlescent paper printing, and in particular relates to a method for printing barcodes on pearlescent paper. Background technique [0002] With the increasingly fierce market competition, printing manufacturers are constantly striving to improve the quality and function of their printed matter, and improve the quality of product packaging. Printing with pearlescent paper appears in this situation. The composition of pearlescent paper is the same as that of ordinary whiteboard paper, that is, it consists of three parts: bottom fiber, filler and surface coating. The difference from ordinary whiteboard paper is that there are particles forming pearlescent effect in the surface coating of pearlescent paper. The particles are made of titanium dioxide (or It is composed of other metal oxides) and mica particles, and the mica particles are wrapped by titanium dioxide to form a thin sheet structure. The surface...

AI Technical Summary

Problems solved by technology

[0006] 2. Due to the poor ink absorption of pearlescent paper during printing, it will cause ink rejection failure, which in turn will cause the problem of dirty printing

[0007] 3. Due to the poor ink absorption of pearlescent paper, a large amount of ink that cannot be absorbed will accumulate on the blanket, which will crush the blanket and printing plate, increase the loss of printing auxiliary materials, and increase the cost

[0008] 4. Due to the poor ink absorption of pearlescent paper, it will cause uneven transfer of ink, which will make the thickness of the ink layer on the printed matter uneven and inconsistent, and the surface of the ink layer is not smooth enough, which eventually makes the visual effect and feel of the barcode poor.

[0009] 5. Due to poor ink adhesion and drying on pearlescent paper, the printing density is low, small dots are lost, and the ink layer of barcode printing is too thin

The reading of the barcode is realized by the color contrast between the bar and the space of the barcode, which makes the barcode difficult to read.