Paper Detection Tips

Check sheet
Any extract from the pile of paper piece of paper, hand-to-read paper of paper or flat surface to check the extent of the paper surface smooth and clean uniform level. General
, The paper surface should be flat serve no trace, no knots, while the surface of the paper should not have color shading, reflective of varying spots, or have colors inconsistent with the paper dust and so on.
Ying-ray observations raised the paper to check the uniformity of the paper. Ying-ray observation of light and shade when the paper should not have to varying degrees of translucent or transparent spots. If the paper appears uneven large cloud-like spots, then the uniformity of the paper is poor, will seriously affect the quality of printed products.
Even taking 4 to 5 sheets of paper checks
Paper is sometimes offset by a number of web-fed at the same time cutting stack made of paper-making process on the web due to the different nuances, resulting in the same pile of paper next to a few differences in the nature of the paper. If mixed with an unqualified web which, when it will happen circular anomaly, printing will appear when you print failure occurs at a certain interval. We therefore it is necessary to extract a row in the heap of paper to compare the number of sheets of paper checks, check whether there is adjacent the difference between the paper. While this situation is more rare, but sometimes this observation and analysis has become particularly important.
Quantitative examination paper and marking
With the paper cutter cutting five 200mm × 250mm of paper samples, kept in a high sensitivity of weighing scales and then divided by the measured quality of the paper size, obtained quantitative values shall be the paper. Measurements, the results should be marked on the product certification is very close to the quantitative and quantitative in the national standards to the extent permitted fluctuation, but can not exceed this range.