Print Sequence of Transfer and Transfer of Offset Printing Inks (1)

Printing color sequence

In multi-color overprinting, the process of overlapping and overprinting in a certain order with a single color as a unit, and finally restoring the original, is called an ink overprinting sequence, or simply a color sequence.

In traditional offset printing, the same printing plate, the same type of paper, the same series of inks, the same type of offset printing press, the same temperature and humidity, the same operator, due to the different printing sequence, the printed color effect is Not the same.

There are 24 types of overprinting sequence for combining four-color printing.

If you add light or spot colors, the combination of overprinting color sequences is even more. The most commonly-used models in actual production are the following:

Table 5-1 Color order arrangement of common models

Note ; for reference only

The arrangement of printing color sequence is governed by various conditions. In order to obtain a good copying effect, the following basic principles should generally be followed:

( 1 ) According to the brightness of three primary colors arranged color sequence: dark color first printing, bright color printing.
( 2 ) According to the transparency and hiding power of three primary colors, the color sequence is arranged: the ink with poor transparency is printed first, and the ink with strong transparency is printed after printing.
( 3 ) According to the area occupied by the dot area, the color sequence is arranged: generally, the area of ​​the network area is small, and the area of ​​the network area is large.
( 4 ) According to the characteristics of the original arrangement of the color sequence: the warm tone of the main picture is printed black, blue, after the print magenta, yellow; the cold tone of the graphic first printed black, yellow, after the magenta, green.
( 5 ) According to the model arrangement color sequence: monochrome or two-color offset printing press printing sequence is generally yellow, magenta, cyan, black or black, cyan, magenta, yellow.
( 6 ) Sort the color sequence according to the nature of the paper: smooth, tight paper first prints dark colors, and later prints bright colors; coarse, loose paper prints bright colors first, and dark colors print later.
( 7 ) According to the dryness of the ink, the color sequence is arranged: the slow drying ink is printed first, and the fast drying ink is printed.
( 8 ) According to the flat network and the field arrangement of color order: Flat-screen graphic first printed, printed on the structure of the field.
( 9 ) According to light and dark ink arrangement color sequence: dark ink first printing, light or spot color ink after printing.
( 10 ) According to the rules of fitting, color change is easy to arrange the color sequence: the main color or strong color combination as close as possible in a piece of printing, can not be separated. In addition, the color sequence must take into account the convenience of color change, otherwise it will increase the auxiliary time.