As a printing
company staff, we know that there are many factors affecting the quality of
printed matter. As a printing substrate, paper is of course an important factor
affecting the quality. However, as a customer chooses paper for his company, he
often does not know how to print. Not to mention the paper for book printing,
it is difficult to choose a printing paper suitable for the characteristics of
its company. As for us, we can't say which kind of paper is high-grade and
recommend it to customers. Instead, professional advice should be given to
customers based on past printing experience.
A good sample of the album is more helpful
to express the company's brand image, corporate culture and product market
positioning. Then you want to print high-quality (colorful, rich) album
printing, it is very important to choose the right printing paper. of. If it is
not used properly, there will be many problems such as poor image quality.
Basically, the quality of book printing can be divided into eight factors: ink,
printing paper, printing machine, roller lining, printing environment, printing
plate factors, fountain solution, and operating factors. So what are the
aspects of paper that affect the quality of book printing?
1. The quantification of paper, commonly
known as "gram weight." The higher the basis weight of the paper, the
thicker the paper and vice versa. Its height will directly affect the tensile
strength, tightness, tearing, bursting, thickness, transparency and other
properties of the paper. Therefore, it is important to select different weights
of paper according to different book printing requirements. The most common
corporate brochure printing is
basically coated paper or matte paper printing, which has: 105g, 128g, 157g,
200g, 250g, 300g.
2. The smoothness of the paper. The
smoothness of the paper is an important factor in whether the graphic is clear.
Printed on a smooth surface, the prints are clear, neat, and well-defined. In
addition, the paper has two sides, even if it is printed with the same amount
of ink and the same offset printing machine, the front image clarity and the
like are higher than the reverse side. Therefore, you should choose a smooth
paper to improve the printing quality. (The direction of the silk of the paper
should also be given special attention)
3. The whiteness of the paper. There are
many types of printed paper, the most commonly used is white, the whiteness is
different, and it has different effects on the color of the printed ink layer.
If the whiteness of the paper is too low, the paper will have a certain color
and grayscale increase; the whiteness is too high, and the color and tone layer
of the image are flat.
4. Paper absorbs ink. The same ink, the
same hue. Under the same conditions, there are different printing effects for
papers with different absorbivities, and the difference affects the color
difference of the ink layers. Too strong, the print ink color is easy to fade,
lack of gloss; too weak, will cause the ink to adhere not firmly, the ink on
the surface of the print can not be dried in time, easy to smear (pay special
attention to this when you are in a hurry).
5. Resistance. That is, after the final
printing of the finished product, various adverse factors encountered during
the use process, the tolerance of the printing paper.
6. The hydrophilicity of the paper. In the
printing process, controlling the moisture of the printing paper is also one of
the key factors. To adapt to the characteristics of the paper, the humidity of
the workshop should be controlled within a certain range, and the paper should
be sent to the workshop in advance to balance the temperature and humidity of
the workshop. The moisture of the printing paper is low enough to maintain its
good electrical conductivity and facilitate the transfer of ink.
Of
course, the influence of paper on printing quality is not limited to the above
points. Because paper performance changes with environment, time and process
conditions in many cases, the correct choice of album sample printing paper,
considering the influence of various factors on the quality of the finished
book. According to the final effect of the desired effect, it is not only
better to improve the printing quality, but also to improve production
efficiency.
