|EXCEL POSITIVE OFFSET PLATE|
1.0 GENERAL FEATURES
Anodized plate, elettrochemically grained, costitued by Aluminium 99,5 (Alloy AA 1050 H18-H19)
Brillant green positive diazo coating
Superficial Overcoating to improve contact with film.
2.0 FUNCTIONAL FEATURES
U.V. Metal-halide sources are required.
-5.000 W power, distance 110 cms. The corresponding energy is 0,9-1,1 mW/cm2
-develop positive 097 ready to use temperature 24°C. , develop time 20 sec.
-expose 60-70 sec. in order to obtain step 4 grey and microlines 12 broken (UGRA)
It can be regulary made by machine , hand or tank , using commercial positive developers, having the following features:
pH>12,0 conductivity: >30 mS/cm < 70 mS/cm
Developnig temperature: 20-24°C.
Contact time with the developer: 20-30 sec.
The plate must present a uniform photosensitized coating , without losses , scratches, dots. The colour must be uniform all over the surface.
4.0 DIMENSIONAL FEATURE
4.2 Tolerances : ISO 12635: 1996(E)
For thick. 0.15mm. to 0.20 mm. = + 0.010 mm.
0.20mm. to 0.30 mm. = + 0.010 mm.
- 0.030 mm.
0.30mm. to 0.50 mm. = + 0.010 mm.
= - 0.040 mm.
For the size : +/- 1,0 mm. (0,5 mm. on request for web)
The sensitized surface has following values: Rm 5.5 – 7 micron Ra 0,50 – 0.70 micron
Surface waves according to DIN 1784 : max 0,75%
Waves sides : max. height 2 mm.
Waves at the centre : max height 2,5 mm.
Max numbers of waves : 3/ meter
24 months from production date, kept in the original packing , in normal temperature conditions
Packs of plates wrapped in a first balck thermoretracted polyethylene wrapping and posiotioned in a cardboard box
The packing is labelled with the following indications:
|Phone :||+49 6128 970-817|
|Fax :||+49 6128 970-818|
|Postal Adress :||Neuhofer Strasse 7,|
|D - 65527 Niedernhausen 2|