Factors Affecting Color Registration Accuracy and Solutions

1 whether the issued film itself can register;
2 whether it can guarantee the accuracy of registration when making up;
3Drilling, printing, bending, and loading are accurate.
4 whether the main threading roller of the printing machine is horizontal, and whether the surface of the threading roller in the middle of the printing unit is cleaned in time;
5 whether the pressure on both sides of the double-width printing press is balanced;
6 The size of the gap between the two rubber blankets also affects the accuracy of the upper and lower register.
7 Whether there is rewinding of the paper itself in the printing process;
8 The fan-shaped expansion of the paper in the printing process affects the registration accuracy of the color newspaper and so on.
Taking into account the above influencing factors, we require the registration accuracy of the assembled film to be less than 0.02mm, and the accuracy of the final printed newspapers is guaranteed to be around 1 line, with no more than 2 lines, for newspapers over 2 lines. Will be treated as a waste report.
Whether or not the ink-and-butter balance in the printing process is optimal in the printing process Maintaining the best ink-and-water balance during the printing process is crucial to printing good news. When the ink-and-ink balance is controlled better, it can be printed. Colourful newspapers are colorful and glossy, and it is easy to print the most beautiful newsletters with the least amount of water and ink; on the contrary, if you ignore this problem, increasing the ink indefinitely in the printing process will bring about a wide range of inks. The emulsification, the newspaper is damp and sticky, and the headings are grey and the photos are dark.
There are two general consequences of the destruction of the ink-and-wash balance: First, the layout is dirty; first, the amount of water is too large. Everyone knows that the newspaper carries dirty harm. Here we mainly talk about the dangers of excessive water.
The surface phenomenon of excessive water volume is that the printed newspapers are grayed out and the images are dull. Actually, the over-large water and ink damage is also reflected in the following aspects:
1 Water will enter the ink fountain along the transfer roller and ink roller, resulting in a wide range of ink emulsification;
2 will wet the printed sheets and affect the quality of the newspapers;
3 will make the printed newspaper heading gray, dark photos;
4 The viscosity of the ink is drastically reduced, resulting in floating of the dirt or turning of the ink stick into the water bucket, and then refluxing into the water tank. The time is longer and the floccular ink particles appear in the water tank.
5 will produce a lot of acidic vapor, corrosion of the machine.
The maintenance and maintenance of equipment affects the printing quality of color printing. In order to achieve the best ink-water balance in printing, besides requiring the printing operator to have a strong sense of responsibility when it is standing, it also has the dimension of the printing equipment in peacetime.

Care and maintenance are inseparable. In the production practice, the maintenance and the maintenance of the equipment have a great influence on the printing ink balance and even the printing quality of the entire newspaper. Therefore, in the usual production management, the maintenance and maintenance of the machine by the operator can usually be detected by the value of the ink and ink balance in the printing process. The maintenance requirements of the equipment are mainly from the following six aspects.
1. After printing the newspaper on the same day, clean all the machine's water glue, ink glue, and paper rollers.
2. Regularly check the pressure of water glue and ink, especially when changing the season, be sure to check the pressure of all the rubber rollers thoroughly. If it is found that the pressure does not match the specified pressure, it must be adjusted to the specified value in time.
3. The issues related to printing equipment reflected in the ordinary newspapers should be promptly investigated and promptly resolved.
4. The concentration of the dampening water in the tank is measured at regular intervals, and the conductive value and the pH of the dampening water are required to meet the standard at the same time (the conductivity value is generally 1000-1400 μs, and the pH is generally 4.8-5.3).
5. Periodically clean water tanks, water buckets, inlet pipes and return pipes to remove dirty pieces from them to prevent blockage of the buckets with dirty blocks and affect normal water supply.
6. Check the flatness and resilience of the blanket surface, so that it can be checked regularly and replaced in a timely manner (double-width machines also need to eliminate gaps between the two blankets in time).
In addition, the use of printed materials and the ideal printing equipment have a very significant impact on the printing quality of color newspapers. No further introduction will be made here.