Form code pressworks of quality examine standard

6.2.3 examine when objective packs the bar code sign that attend, sample need not be handled
Sample of 6.3.1 visual inspection puts 6.3 outward appearances in colour temperature for 5500 - below the D65 standard illuminant of 6500K, undertake by 5.1 clauses the vision is checked
6.3.2 instrumental inspection 6.3.2.1 measure an instrument to use microscope and net form ocular to measure small foot
6.3.2.2 measure measure
A. Measure small feet to break up the stain, enlarge that take off Chinese ink with microscope and net form ocular, according to the stain, reseau number that takes off Chinese ink to occupy, beg its area
B. Value of area of the definitive in the level of bar code state that the area value that gets A and this sample use is compared
6.4 (empty) reflectivity the levels of 6.4.1 bar code state that measure a condition to measure a condition to should accord with test sample to use
6.4.2 measure an instrument to measure an instrument to use contented
The instrument of 6.4.1 clauses
6.4.3 measure measure
6.4.3.1 instruments calibration
6.4.3.2 underlay is placed below sample, underlay should use reflection density to be in of 1.5 above without the diffuse reflection data with selective spectrum
6.4.3.3 in bar code character even if be taken equably up,5 measure the place, measure each from one by one of full stop of initial magic figures drawn by Taoist priests to invoke or expel spirits and bring good or ill fortune (empty) reflectivity, the measurement of each height position repeats afore-mentioned measure
6.4.4 data processing
6.4.4.1 take same height locally the least value in the maximum in each reflectivity and each empty reflectivity, regard this as one height locally (empty) reflectivity
6.4.4.2 take 5 different height locally the least value in the maximum in each reflectivity and each sky reflectivity, regard this bar code as the symbol (empty) reflectivity
6.5 presswork contrast (PCS is worth) presswork contrast (PCS is worth) by formula (1) computation. PCS=RL - in RD RL type: The reflectivity with R L- hollow bar code; RD - in bar code reflectivity
6.6 (empty) on size error
6.6.1 measure a condition to be the same as 6.3.1 clauses
6.6.2 measuring instruments implement the least scale division value measures an instrument for the length of 0.01mm
6.6.3 measure measure to be in bar code character even if be taken equably up,measure the place 5 times, measure each to full stop one by one from initial magic figures drawn by Taoist priests to invoke or expel spirits and bring good or ill fortune (empty) dimension, the measurement of each height position repeats afore-mentioned measure
6.6.4 data processing 6.6.4.1 take same height to get on each (empty) the maximum of on size error regards this as one height (empty) the the biggest, least value of on size error
6.6.4.2 take 5 different height locally each (empty) of on size error the biggest regard this bar code as the symbol with the least value (empty) on size error
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