The most popular offset printing key positive PS p

2022-08-01
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Key to offset printing: process control of positive PS version drying (III)

(III) judgment of appropriate exposure time

we only have high-resolution PS version, good exposure conditions are not enough, and we need sufficient but not excessive exposure time to sun a good PS version

the following table is a parameter table recommended by the UGRA manufacturer for us to find the appropriate exposure time: (the yellow area in the table is what we can do in real production)

the minimum reproducible width of the positive line in the yin-yang circle area after printing. After printing under the same exposure time, the actual point size on the printing plate is 7% area 20% area 40% area 80% area 4 μ mca. 7%ca.10%ca.40%ca.80%6 μ m6.5%9.5%39.0%79.0%8 μ m6.0%9.0%38.0%78.0%10 μ m5.5%8.5%37.0%77.5%12 μ m5.5%8.0%36.0%77.0%15 μ M5.0%7.5%35.0%76.0 system display calibration zero point%20 μ m4.0%6.0%33.5%74.5%25 μ M3.0%5.0%32.0%74.0% Table 1: applicable to resolution 5 μ M printing plate

the minimum reproducible width of the positive line in the yin-yang circle area after printing. After printing under the same exposure time, the actual point size on the printing plate is 7% area 20% area 40% area 80% area 6. The parking of the factory will affect the employment of about 320 employees μ mca. 7%ca.10%ca.40%ca.80%8 μ m6.5%9.5%39.5%79.5%10 μ m6.5%9.0%38.5%79.0%12 μ M6.0 middle layer 1 is high-performance waterproof and moisture permeable polyurethane film material%8.5%37.5%78.5%15 μ m5.5%8.0%36.0%77.5%20 μ M4 excellent service is the cornerstone of the brand 5%7.0%34.5%76.0%25 μ M4.0%6.0%33.0%74.5% Table 2: applicable to resolution 5 μ M to 8 μ Plates between M

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