The Principle Of Carbonless Copy Paper

There are two kinds of coatings in carbonless copy paper: CF layer containing color developer and CB layer containing color developer. The chromogenic agent is a special leuco dye, which has been dissolved in a non-volatile carrier oil and is encapsulated by 3-7 μm microcapsules. The impact pressure of hard writing and printing can crush the microcapsules, so that the leuco dye solution flows out and comes into contact with the color developer, and a chemical reaction occurs to present colored pictures and texts, so as to achieve the purpose of copying. Carbonless copy paper is divided into 45g/m2CB paper, 47g/m2CF paper and 52g/m2CFB paper according to the quantitative; according to the color of the paper, there are five kinds of red, yellow, green, blue and white; Yellow, orange, black, red and other colors.