print inspection tipping paper: camera print inspection

Print inspection – tipping paper – quad bobbins

Patent applied in Germany and P.R. of China

Conditions

· tipping paper web speed max. 480 m/min = 8.000 mm/sec.

· printed register field across web : X max. 64 mm

· printed register field down web : Y = 25 mm

· OPSS-1-B scanner speed – e.g. A = 200 mm/sec

· camera scanner speed – e.g. B = 600 mm/sec.

· position accuracy of OPSS-1-B scanner : +/- 50 µm with ASM sensor

· OPSS-1-B scanning stroke approx. 300 mm

· local resolution at printed field = 100 µm

· suggested pixel sensor (double pixel calculation)

· X = 2*(64 mm/0.1mm) = 1280 pixel

· Y = 2*(25 mm/0.1mm) = 640 pixel

Results

maximal capture rate : cap = speed/Y-field = 8.000mm/sec/25mm = 325 capture/sec.

inspect with step 1 bobbin A : (Δt0 --- t1)*cap = 0.32s*325capt/sec. = 104 captures while web running

inspect with step 2 bobbin C : (Δt3 --- t2)*cap = 0.32s*325capt/sec. = 104 captures while web running

inspect with step 3 bobbin D : (Δt3 --- t4)*cap = 0.32s*325capt/sec. = 104 captures while web running

inspect with step 4 bobbin B : (Δt1 --- t2)*cap = 0.32s*325capt/sec. = 104 captures while web running

(Δt0 --- t1) = (Δt1 --- t2) = (Δt2 --- t3) = (Δt3 --- t4)

full scan OPSS-1-B : 2*(∑t1, t2, t3, t4) = 1280*2= 2560ms = 2.56 sec.

by (2.56 sec.*8 m/sec) 20.5 meters printed tipping paper by full scan

∑ captures : (step1+step2+step3+step4) = 4*104 captures = 404 captures

Continuous inspect length by bobbin A, B, C, D: speed*inspecting = 8.000mm/sec*0.32sec = 2.6 meter

Continuous inspect printing length of each bobbin strip : 2.6 meters with 104 captures

each of 25 mm single printed fields by 8 m/sec. speed

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IPM International Perforation Management

hi-tech engineering, Asia, Germany, Thailand

Mr. Werner Grosse

Tel./fax : 0049-3212-5097465

print inspection tipping paper