Printing Paper and Printing Quality--Common Paper Diseases (5)

1) Rift: A crack or break in the middle or edge of a sheet.

2) The edges of the paper are not neat and unclean: The edge of the paper is not neat. On the one hand, it means that the paper edges cannot be parallel or rectangular after the paper sheet is cut or the edges of the paper are burrs, bends, and twists. On the other hand, it means cutting out the entire selection. After the paper size is uneven or the back-end surface of the rewinder has a phenomenon of "in and out". Unclean paper edges refer to burrs, zigzag edges, incomplete edges, and dirty edges on cut sheets.

3) Hue inconsistency: refers to the inconsistency of the whiteness and color of the same batch of products even with the ream.

4) "Load lace": It means that the edge of the paper, especially the longitudinal edge, loses its flat state, and it is in a curved state that is not in the same plane as the paper surface.

5) Obvious two-sidedness: The gross difference between the two sides of the paper can be seen with the naked eye (except for single-sided offset paper and single-sided coated paper).

6) Incomplete, broken and shredded paper: Incomplete and broken sheets refer to papers with incomplete pages, which have missing corners, lack of edges, broken or only half, etc.; shredded paper refers to the size of paper that is not included in the paper. A small piece of paper.

Source: Bison