Lithographic printing device and method for achieving printing surface continuation with different image-text ranges

Abstract

The invention provides a lithographic printing device and method for achieving printing surface continuation with different image-text ranges, wherein the lithographic printing device comprises a printing machine, a first material guide mechanism and a second material guide mechanism, wherein the printing machine comprises an ink supplying unit, an ink transferring unit, a cylinder, a printing expansion cylinder and a pressing cylinder, wherein the circumference surface of the cylinder is completely covered with a lithographic plate, and rubber cloth is glued on the circumference surface of the printing expansion cylinder; the length of the cloth surface of the rubber cloth relative to the circumference of the printing expansion cylinder is equal to or greater than the length of the image-text range on the plate surface of the lithographic plate relative to the circumference of the cylinder; the first material guide mechanism comprises a front end control guide wheel; the second material guide mechanism comprises a rear end control guide wheel, thus the lithographic printing device and method provided by the invention can be applied to the same printing machine, full-wheel-surface printing or interval-type wheel surface printing is selected according to the different image-text ranges on the plate surface so as to achieve the aim of printing surface continuation.

Description

technical field [0001] The present invention relates to lithographic printing equipment and methods, in particular to a lithographic printing equipment and method for achieving continuous printing surfaces with different image and text range sizes. Background technique [0002] At present, almost all the products on the market are affixed with the brand logo or product logo and description stickers printed by the printing machine. Before the printing machine prints the above stickers, it will also make plates according to the product size and customer needs. However, lithography has a certain size. When making plates according to different product sizes or different customer needs, it often happens that the range of graphics and text on the layout is very small. If you still want to print on the same printing machine, due to the printing machine Both the diameter of the plate cylinder and the diameter of the printing cylinder have their fixed dimensions; therefore, when the ...

AI Technical Summary

Problems solved by technology

However, as can be seen from the foregoing, this prior art still has its defects to be improved; this defect is that, before printing of lithographic plates with different image and text range sizes on the layout, the prior art must first replace the lithographic plates whose circumference size is suitable for the length of the lithographic plates. Cylinders and printing cylinders, in this way can reduce the waste in the blank section during full-face printing, so users not only need to spend additional money to purchase different sizes of cylinders and printing cylinders, but also need to make room for storage Plate cylinders and printing cylinders of different sizes waste a lot of time for users to replace plate cylinders and printing cylinders of different sizes

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