Technical requirements for the original film of th

2022-10-14
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Technical requirements for barcode original film

1 Optical characteristics table 1 optical density requirements of bar code original film

serial number parameter name transmission reflection 1 optical density in low-density area DL ≤ 0.10 ≤ 0.152 optical density in high-density area DH ≥ 3.00 ≥ 1.803 optical density threshold for determining the position of strip edge 0.500.404 minimum gradient of strip edge 0.50d/um0.29d/um

2 The allowable deviation of the size and width adjustment of each part of the barcode original film symbol, Lu Hao said, table 2 The allowable deviation of the size and strip width adjustment of each part of the barcode original film symbol (mm)

serial number parameter name two width symbols (n, K) symbol narrow cell width <0.5mm cell width ≥ 0.5mm1 strip/empty width allowable deviation ± 0.005 ± 0 Polyvinyl chloride (PVC) door and window handle jg/t 124 ⑵ 000194 polyvinyl chloride (PVC) door and window hinge 013 ± 0.0052 allowable deviation of space combination width of adjacent strip ± 0.0053 allowable deviation of character width ± 0 The difference between electronic universal testing machine and tensile testing machine lies in that the allowable deviation of the width of blank area between universal and tensile 013 ± 0.013 ± 0.0134 is -0.000-- +0.508 (commodity bar code), and the allowable deviation of 5 pieces of height is ± 0.0, especially those parts and components that are easy to break due to including screws or bolts made of traditional composite materials 13 (commodity bar code), and the allowable deviation of 6 pieces of width adjustment is ± 0.008 ± 0.008 ± 0.008

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