One: Generally, the paper used for printing calligraphy and painting is not as special as that used for calligraphy and painting. He used rice paper, bamboo paper and wool paper. Thick paper, smooth paper and even modern printing paper that people can see are widely used in printing paper.
Two: the pen and ink of printed matter is not as flexible and free as painting and calligraphy.
Third, the simple and practical identification method is: smell with your nose. Printed matter has no ink smell, and some are only ink or tasteless.
Four: Printed matter generally consists of small grids or dots, which can be seen clearly with a magnifying glass. With a magnifying glass of 10 to 20 times, you can see whether the place where the text changes gradually is composed of many ink dots. Chinese painting is the same, see if there are many different ink spots. This kind of ink dot is called dot in printing industry, because printing needs screening to realize multi-level painting, such as from deep to shallow, from bright to dark.
Five: There is also a kind of overprinted calligraphy and painting art, but it is marked in the art shop. It is also an art in itself, and its value is not cheap!
Case: On the basis of inkjet printing, three calligraphy and paintings were sketched with pen and ink, which were almost identical to the original works, and some subtle strokes were copied down. A real painting has no ink spots where there is no ink, but the printed matter is obviously "dirty" in the blank due to repeated printing.