What are the factors that affect the printing quality of colored copper label paper?

The factors that affect the printing quality of color copper plate label paper are many, and the following are some of the main factors:

First, paper performance

1.Surface strength: The surface strength of coated paper refers to the bonding strength between the paint particles on the surface of the paper and between the coating and the base paper. The lower surface strength is easy to lead to the loss of hair and powder during the printing process, affecting the printing quality and operation. Therefore, choosing coated paper with high surface strength is the key to ensure printing quality.

2.Moisture content: The moisture content in coated paper is also an important factor. If the moisture is improper and the temperature resistance is poor, the bubbling phenomenon may occur during the printing process, affecting the flatness and beauty of the print. Especially for high-speed rotary printing machines, there are higher requirements for the temperature resistance and moisture content of paper.

3.Whiteness and smoothness: The whiteness and smoothness of the paper directly affect the adhesion effect of the ink and the degree of color reduction. The paper with high whiteness can better reflect the ink color, and the paper with high smoothness is conducive to the uniform adhesion and transfer of ink.

Second, ink performance

1.Color: The color of the ink directly affects the color performance of the print. Choosing the right ink color and ensuring its stable and accurate reproduction in the printing process is an important part of ensuring the quality of printing.

2.Viscosity: The viscosity of the ink will affect its fluidity and adhesion. Too high or too low viscosity is not conducive to the smooth progress of the printing process, may lead to uneven ink transfer, poor drying and other problems.

3.Drying speed: The drying speed of the ink has an important impact on the final effect of the print. Too fast drying speed may lead to the ink surface conjunctiva and the interior is not dry, drying speed is too slow may affect the printing efficiency and increase the risk of contamination.

Third, printing process

1.Printing pressure: The appropriate printing pressure helps the ink to transfer and adhere evenly. Too much pressure will lead to dot expansion, blot blur and other problems, and too little pressure may lead to incomplete ink transfer.

2.Printing speed: The speed of printing will affect the contact time and drying effect of ink and paper. Too fast a speed may lead to inks not sufficiently dry before being rolled or stacked, and too slow a speed may affect production efficiency.

3.Color sequence arrangement: In multi-color printing, the arrangement of color sequence has an important impact on the accuracy of color reproduction and overprinting. Reasonable color sequence arrangement can reduce color difference and overprint error.

Fourth, pre-press processing

1.Color management: Color correction and matching of the image through the color management system to ensure the consistency of the print and the original color.

2.Plate making quality: The quality of plate making directly affects the clarity and detail expression of printed matter. High-quality plate making can ensure that the shape of the dot is regular and the size is consistent, thus improving the printing quality.

Fifth, environmental factors

1.Temperature and humidity: The temperature and humidity of the printing workshop have a certain impact on the performance of paper, ink and printing press. Maintaining appropriate temperature and humidity helps to reduce problems such as paper deformation and poor ink drying.

2.Air quality: Dust and impurities in the air may adhere to the paper and plate, affecting the printing quality. Therefore, it is also important to keep the printing shop clean and ventilated.

In summary, the factors that affect the printing quality of color copper plate label paper include paper performance, ink performance, printing process, pre-press treatment and environmental factors. In actual production, it is necessary to consider these factors comprehensively and take corresponding measures to ensure the stability and reliability of printing quality.