The
quality of product is the life of printing company, it
relates to market competitiveness of company directly.
1.
Control of printing quality.
When
Plate burning, outside the PS version by body, by add color code, pulling the
tail three parts, so, when check the printed products, easy to find
misregister, paper, reverse, double sheet caused by different plate and been
mixed.
The
quality of the photocopy and film must be carefully inspected before the
printing plate and the machine, so as to avoid the impact of the printing
quality problem. At the same time, the school edition should be proficient and
accurate, and minimize the number of school editions. It is necessary to be
evenly distributed and avoid the impression that the printing plate is made out
by an artificial elongated deformation.
2. The selection of printing
consumables
(1) Paper
Choose the paper that is better and more adaptable, avoid the phenomenon
such as pulling and dropping of the paper. Before printing, prevent the paper
from being affected by the deformation of the paper.
(2) Ink
Light fast dry ink for offset paper printing, can avoid the resin type ink
produces pulverization lacklustre and sticky dirty, the phenomenon such as
hair, dry faster. But in the process, you should prevent the ink from drying
and peeling.
(3) Rubber cloth
In normal printing, the rubber cloth should be cleaned frequently. The new
rubber cloth stretches well and the machine should be tightened gradually. In
the daily operation, every tightening, once the offset press is pressed, stop
and tighten again and again and again, so that the rubber cloth will tighten
up.
3. Printing pressure controls.
The surface of offset paper is rough and the ink is good, so as to make
the printing ink thick and clear, the printing pressure should be increased
appropriately in printing.
In addition, the pressure of water roller and ink roller should be proper,
so as to maintain good transmission and transfer of ink.
4.
Printing conditions controls.
1).
Control of the PH of the solution.
The
PH of the liquid solution should be controlled at 4.5-5.5, and if the PH value
of the solution is not properly controlled, it will affect the drying speed and
the quality of printing.
2).
Control of the water and ink balance.
In
the printing process, it is necessary to maintain the ink balance and achieve
the best printing status of “small dry water�. When the water is in the water,
the water will be changed to the original state in order to avoid the emulsion
of ink caused by “big ink�.
3).
Control of workshop temperature and humidity.
In
order to make the printing and achieve the best effect, the workshop air
conditioning and humidifier should be configured, to ensure that the workshop
temperature is 20-25�, humidity is 55% ~ 65%.
In printing
market increasingly competitive today, control the printing process, attaches
great importance to the print quality inspection, is a printing company to get good
printing quality of the premise and the key.
