The three objectives to be achieved in the inspection of paper appearance quality

Paper appearance quality refers to the absence of spectrograph equipment. Only human senses can identify the quality status of the paper. It can be divided into the appearance quality of a book page itself and the appearance quality of a piece of paper formed by a single book page or a long band of book pages.

No matter what kind of appearance quality affects the use of paper to a different extent. The appearance of a low profile will not only reduce the paper use value and the printed product yield, but also cause the paper to become a waste product in severe cases. In addition, some serious paper defects such as hard paper blocks in the paper will also squash the printing plates and rollers during printing, leading to the destruction of printing equipment. The appearance quality and physical properties of paper are also closely related. For example, the appearance of a paper with a surface see-through seersop will have a certain influence on its smoothness and unfair opening.

Paper appearance quality inspection inspection should meet the following three goals:

Check the inspection to see that the paper is out of pieces. The main contents are: whether the shape of the paper is satisfactory, whether the size meets the standards, the quality of the packaging, and the degree of damage.

Master the paper basic paper. Covers color, average flatness, soft and tough tensile, flatness, smoothness, and cleanliness.

The approximate miss rate for picking up lithographic paper (percentage of paper with surfaced paper).