Bar code printing is an essential part.
However, some problems often appear in barcode printing
1. Bar code printing size of
different books and periodicals of books
printing china
Because the size of some books and
periodicals is small or there are too many pictures and pictures on the cover,
there is not enough place to place the bar code, so as to reduce the size of
the bar code at will. Finally, the space of the bar code is too small or the
bar code is too thin, so that the scanning instrument can not read it.
Therefore, in order to reduce the bar code, it is necessary for the
administrative department of book and periodical bar code to use special equipment
to make the reduction code, which can only be reduced to 80% of the
conventional bar code.
2. Improper color matching of strip and
blank in books printing china
Because the bar code is read by different
reflectivity of light on the bar and space, the light source of barcode
scanning equipment is mostly red light, so the barcode with white space and
black bar is the most easy to read. In order to reduce the printing cost of
some books and periodicals, only one color is printed on the cover of some
books and periodicals: red, yellow or orange. As a result, the barcode is also
printed as red bar on white background, yellow bar on white background, and
orange bar on white background, which makes the scanning equipment unable to read
these barcodes. Of course, in addition to the collocation of white, empty and
black bars, you can also choose black, dark blue, dark green, brown, and the
color of empty should be white, red, yellow, orange, these 16 combinations are
the best choice.
3. Making barcode film by ourselves
Some books and periodicals have lost their
barcode film, so they can make a barcode by themselves or copy the barcode from
the original book and then take it to plate making. This practice is also wrong.
Generally, the quality of self-made barcode film or the barcode copied is
unqualified, which easily leads to the barcode scanning equipment unable to
read in books printing china
4. Improper selection of printing paper,
ink and equipment
The bar and space gap in the bar code is
very small. If the paper, ink and equipment are not selected properly, it is
easy to paste the plate when printing. The bar becomes thicker and the space
becomes thinner. When the bar width deviation exceeds ± 30%, the scanning
instrument can not read it. Therefore, offset printing for books printing china is the best choice for barcode printing of
books and periodicals. The paper with less wool such as coated paper and offset
paper should be selected. When printing, the cylinder liner should not be too
soft, and the liquidity of the ink should be moderate to ensure that there is
no paste. The bar code printing should ensure that the bar space is clear, the
size is accurate, the bar width deviation and printing contrast are within the
specified range, so as to become the qualified bar code printing products of
books and periodicals.
