Indirect printing machine with carved intaglio

Abstract

The indirect printing machine with carved intaglio includes one metal intaglio printing cylinder, one pressure cylinder and one transfer printing cylinder, with all the cylinders being parallel mutually. The metal intaglio printing cylinder has several notched platings for filling ink, and the transfer printing cylinder has one elastic sleeve for the metal intaglio printing cylinder to contact with for transfer printing. The pressure cylinder contacts to the elastic sleeve, so that one gap is formed between the transfer printing cylinder and the pressure cylinder so some hard object to pass through. The pressure cylinder fitting the transfer printing cylinder press the hard object, so as to printing the ink indirectly from the transfer printing cylinder to the surface of the hard object. The well matching between the surface of the transfer printing cylinder and the surface of the hard object results in improved indirect printing quality.

Description

technical field [0001] The present invention relates to an engraving gravure indirect printing machine, which particularly relates to the indirect transfer of printing ink (ink) of a printing cylinder (plate cylinder) to a hard object (hard object) or On a thick plate object, intaglio printing can be completed in this way. Background technique [0002] Known engraving gravure printing machines, such as figure 1 and 1A As shown, it includes a metal gravure printing cylinder 10 and a pressure cylinder 20, which are printed by engraving gravure direct printing. The metal gravure printing cylinder 10 has several recesses 11, which can be filled with ink in a suitable way. A gap 12 is formed between the metal gravure printing cylinder 10 and the pressure cylinder 20 , such that a soft sheet (such as banknote paper) 1 can pass through the gap 12 . When the soft sheet 1 passes through the gap 12, because the pressure roller 20 presses the soft sheet 1 through strong contact pre...

AI Technical Summary

Problems solved by technology

[0006] Although the No. 4566384 can pass the elastic sleeve 100 of the elastic gravure printing cylinder 10' to complete engraved gravure printing on the surface of the hard object 2, its printing effect is still limited by the elastic gravure printing cylinder 10' and the hard object. Restricted by poor deformation matching of the object 2, that is, the print pattern produced by the elastic sleeve 100 of the elastic gravure printing cylinder 10' relative to the surface of the hard object 2 is uncertain due to the variation of the elastic coefficient, for example The same printing plate can print different prints, resulting in the greatest technical disadvantage

In addition, the elastic gravure printing cylinder 10' is destroyed by the wiping system, which leads to the technical disadvantage of shortening the service life.

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