1. The writing on the roll of carbonless paper turns blue: from the carbonless paper's copying principle, we can know that the back of the carbonless paper contains microcapsules. Under the action of force, the microcapsules rupture and show color. However, due to friction during transportation or improper storage, it is easy to cause color development and deformation due to pressure and collision if the end face is not facing down. This needs to be paid attention to when using.
2. Printing wrinkling of carbonless paper on the roll: During the process of the carbonless paper on the roll from being damp to drying, the water content in the paper will change to varying degrees, resulting in different humidity between the middle and both sides, which is easy to cause due to the coating The bonding force with the paper is less than the adhesion of the ink, which causes hair loss and powder loss. Therefore, the roll carbonless paper should be stored in a dry environment, and do not open the paper package prematurely. The unused carbonless paper needs Pack it in time to avoid flooding.
In addition, the number of uses of carbonless paper is also standardized. In order to ensure that the writing on the carbonless paper on the roll is clear, it must be used within the specified number of uses.