Summer Offset Common Problems and Solutions

Hot summer coming, the majority of the offset press users is still as busy as ever, some users may provide timely and satisfactory printed materials, and some users it may be unsatisfactory for the quality of printed products and complain incessantly, and may even curse; so what exactly is the problem exists print summer how to solve it here we long to explore India Group on

First, the easy to dirty version

1, increasing the amount of water in order to avoid dirty version; high summer temperatures, compared to other seasons, the control should be appropriate to increase the amount of water, which is supposed to increase the pressure on the Sheung Shui roll.

2, strict control of temperature; printing environment temperature should be controlled at 10-28 degrees, the optimum temperature is 15-25 degrees, preferably not more than 28 degrees. If conditions permit, it is best to print in air-conditioned room in order to control the temperature; there is no condition, the machine must be moved to a cool place to go.

3, humidity control; humidity and control of water is inversely proportional: the greater the humidity, the control of water should be reduced. In general, a suitable environment humidity control offset relative humidity between 50% -85%;

Second, ink emulsification

1, high summer temperatures, the ink thinning; in this case, should be added to the ink thickens 0 varnish; and then, consider the factors that control the amount of water should be increased.

2, to the ink cooling; some operators might be ice in the refrigerator at the ink, so that the temperature drops the ink thickens. However, since the temperature of the ink printing process it will gradually increase, and therefore, the method is only effective in the short term.

3, in the choice of printing inks, preferably oily smaller selection, printing inks for the summer; if the ink is too thin, add a little dried oil wish. When the actual control of water, should give full consideration to a combination of factors dilute the ink thick, high and low temperature, humidity, size, etc., in order to achieve the best printing results.

Third, the electromagnet fever, lack edition pressure

Summer, why is there solenoids heat of it for the following reasons:

1, high temperature; cooling effect mainly related to the temperature difference caused by the electromagnet and the surrounding environment; the temperature difference is smaller, the cooling effect is not ideal.

2, the voltage is too low; the power offset used is preferably stable at 220V / 50HZ, especially to guard against electrical interference around; in the summer, due to the widespread use of electrical equipment, low voltage, so that exacerbated the electromagnet load , causing fever.

3, solenoid tension spring too much resistance; the resistance is too large tension spring, causing fever phenomenon. For the above, we recommend the use of long continuous printing group (not a common household rating Boost) AC power supply, in order to improve the quality, to extend the life of the machine. On the other hand, we are also stepping up research and development of magnetic force stronger magnet, the magnetic force is used to effectively solve the problem of insufficient This achievement will soon be on the market.