Softcover Educational Books Offset printing is also afraid of heat. Common problems and solutions of offset printing in summer

Softcover Educational Books Offset printing is also afraid of heat. Common problems and solutions of offset printing in summer

The hot summer is coming, and the majority of offset press users are still busy as always. Some users may provide customers with satisfactory printed products in time, while others may be unsatisfactory for the quality of Softcover Educational Books. Complaining, maybe even yelling; what's the problem with summer printing? How should it be solved? Let's discuss it below.

1. Easy-to-dirty version

1. The temperature is high in summer. Compared with other seasons, the amount of water control should be appropriately increased, which is to increase the pressure of the water supply roller; increase the amount of water to avoid dirty plates;

2. Strictly control the temperature; the temperature of the printing environment should be controlled at 10-28 degrees, and the best temperature should be 15-25 degrees

, it is best not to exceed 28 degrees; if conditions permit, it is best to print in an air-conditioned room to control the temperature; if there are no conditions, the machine must be moved to a cool place;

3. Control of humidity; humidity is inversely proportional to the amount of water control; that is, the greater the humidity, the smaller the amount of water control; generally speaking, the suitable environmental humidity for offset printing machines is controlled between 50% and 85% relative humidity;

2. Ink emulsification

1) In summer, the temperature is high, and the ink becomes thinner; at this time, No. 0 ink varnish should be added to thicken the ink; at the same time, considering this factor, the amount of water control should also be increased;

2) Some operators may freeze the ink in the refrigerator, so that the ink will thicken due to the decrease in temperature; however, since the temperature of the ink will gradually increase during the Softcover Educational Books printing process, this method is only effective in a short period of time;

3) When choosing printing ink, it is best to choose ink that is less oily and suitable for summer printing; if the ink is too thin, you might as well add a little drying oil; when actually controlling water, you should fully consider the thickness and temperature of the ink. Comprehensive factors such as height and humidity to achieve the best printing effect;

3. The electromagnet heats up and the plate pressure is insufficient

In summer, why does the electromagnet heat up? The reasons are as follows:

(1) The temperature is high; the heat dissipation effect is mainly caused by the temperature difference between the electromagnet and the surrounding environment; the smaller the temperature difference, the less ideal the heat dissipation effect;

(2) The voltage is too low; the power supply used by the offset printing machine is best stabilized at 220V/50HZ, especially to prevent the interference of surrounding electrical appliances; in summer, due to the extensive use of electrical equipment, the voltage is too low, which aggravates the electromagnet. load, causing fever;

(3) The resistance of the electromagnet tension spring is too large; the resistance of the tension spring is too large, causing heat generation; for the above situation, we recommend using a continuous (non-ordinary household graded boost) AC power supply to improve the quality of operation , prolong the service life of the machine; on the other hand, we are also stepping up the research and development of electromagnets with stronger magnetic force to effectively solve the problem of insufficient magnetic force, and this achievement will be brought to the market soon.

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