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Techinal Specification of Offset Printing Plate
Plate Type:positive
Substrate: aluminum
Gauge Available: 1.5MM-3.0MM
Alloy aluminum alloy : 1050H18
Handling: against moisture ,against heat, shady
Light Source and Exposure: 140-200mj/m2 (1)2000W lamp with gallium lodide (80-100
seconds ); (2)3000w lamp with gallium lodide (40-60 seconds); (3) 5000w lamp
with gallium lodide 20-40 seconds .
Developer: develop solution or powder of positive ps plate can be used in developing
Dot reproduction ability: 2-98%
Definition: 8-10 um
Density of plate substrate background color:less than or equal to 0.01
The mass per unite area of sensitive layer: 2.0-2.5 g/m2
The mass per unit area of oxide layer: 2.0-3.5 g/m2
Developing Temperature: 23degrees centigrade+/-2degrees centigrade
Developing Time:30-60seconds
Deletion: In order to eliminate the unnecessary image and spot in the plate after
washing with developer, a little plate modification prescription (for eliminating
images) can be coated on the elimination place, keep it for one minute, then
wash it with water and coat it with gum.
Shelf time: 18 month
Length of Run:50,000-100,000
Process: exposure, develop, plate modification, gumming, roast plate, printing