Carbonless copy paper can be divided into color development and self-color development in terms of color development, and color development copy paper is the most used. From the color of color, it can be divided into black, blue, red, purple, etc., among which black and blue are the most used. In terms of structure, it can be divided into the upper page (CB paper), the middle page (CFB paper), and the lower page (CF paper). A carbonless copy booklet consists of an upper and a lower page, and to get more copies, insert multiple middle pages between the upper and lower pages.

The color development principle of carbonless copy paper is: when the carbonless copy paper assembled into a booklet (upper page CB paper, middle page CFB paper, lower page CF paper) is subjected to external pressure, the microcapsules coated on the bottom of the upper layer of paper burst, and the dye liquid in the microcapsules flows out and contacts with the color developer on the upper part of the next layer of paper, and reacts to develop color, so as to obtain a duplicate or the same record file.

The main performance indicators for evaluating the quality of carbonless copy paper are clarity of copying, color sensitivity, color speed, light resistance, pollution, warpage, appearance, etc.

High-quality carbonless copy paper must meet the following conditions:

Fast color development, bright and deep color development, good oil resistance, light resistance, water resistance, long-term color fastness, good stain resistance and storage stability, good strength and printability, and the finished product is odorless and non-toxic, and the copywriting is clear.

NCR paper coating machine 

If you want to know more about NCR (carbonless copy) paper coater you can contact Qingdao JRX