How to understand and judge whether it is a really good copy paper?
1. Check whether its appearance is smooth, delicate, and uniform light transmittance (i.e. evenness);
2. Check its physical strength performance, pull it with a hand to check whether the vertical and horizontal tension is high, good copy paper has high vertical and horizontal tension;
3. Try the degree of tearing, tear the paper along the longitudinal direction of the paper, and look at the gap. If the tear is strong and the tear is not neat, it indicates that the tear is high, and the one with high vertical and horizontal directions is the top grade;
4. Try the transparency of the paper. Cover the copy paper on a newspaper printed with one-size bold font, one by one, until you can’t see the outline of the bold font by adding another sheet. Count the number of covering layers. The more layers that can cover the copy paper, the better, indicating that the higher the transparency of the copy paper, the higher the quality.
Usually good copy paper, take 17g/m2 copy paper as an example, usually can cover up to 6-8 layers, and extremely good up to 12 layers. Therefore, a large number of so-called “copy paper” currently popular in the market is not real copy paper. In the words of these manufacturers, it is called imitation copy paper, but it is actually tissue paper.