The effect of paper humidity on printing quality is an important topic, and the following are several key aspects:
Humidity affects the ink absorption of paper. When the humidity is too high, the paper may absorb too much water, causing the ink to spread, affecting the clarity and details of the printed image. On the contrary, when the humidity is too low, the paper may not fully absorb the ink, resulting in uneven printing.
Humidity changes will cause the paper to expand or contract, thereby affecting the flatness of the paper. Uneven paper will cause misalignment or ghosting during the printing process, affecting the appearance of the final product.
Excessive humidity will prolong the drying time of the ink, increase the drying problems during the printing process, and may cause the ink to flow or stick on the surface of the paper, affecting subsequent processing and binding.
Humidity also affects the performance of color. Appropriate humidity can ensure the saturation and vividness of the color, while too high or too low humidity may cause color distortion and affect the printing effect.