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Pad Printer Printing Test Trouble-shooting 1-2
1
Graphic fuzzy, poor edge definition
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Possible causes
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Trouble shooting
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Rubber pad too soft
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Replace more harder rubber pad.
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The shapeof pad is unsuited
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Replace Matched rubber pad
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Depth of Forme too deep
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Remake pad plate with shallow depth
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Incorrect Film screening
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Output film with another screening parameter
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Ink film too thick.
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Adding some thiner to ink
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Drying speed of ink too slow
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Adding fast-drying thiner.
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Printing stock is polluted.
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Clean the surface..
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Corase ourside of products.
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Replace harder rubber pad
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Rubber pad slide
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Replace fixture and aviod pad sliding
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Fixture stabilty not well
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Remake fixture, reduce printing speed.
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2
Poor ink Adhesion
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Possible causes
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Trouble shooting
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Silicon oil remains of rubber pad
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Clean the rubber pad with Solvent
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Pad forme Depth too deep
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Remake pad forme
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Ink is not matched
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Replace another type ink
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Use bi-Component ink
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Replace Bi-component ink
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Incorrect Hardner percent
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Please Precision addng hardner
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Dirty surface of product
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Clean the surface with Solvent
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Need surface Treatment
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Take flame treatment or Chemical treatment
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Processing time is unsuited
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Printing after treating soon
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Insufficiency Post-curing
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With IR dying or UV curing.
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Pad samples show
Pad Printer Printing Test Trouble-shooting 3-4
3. Pinhole
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Possible causes
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Trouble shooting
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Impairment surface of rubber pad
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Replace rubber pad
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Too Flat of rubber pad
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Install more sharper rubber pad
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Rubber pad too soft
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Replace Harder rubber pad
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Defect of pad forme
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Remake pad plate
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Ink too dense
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Adding much more thinner.
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Product surface too coarse
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Choose more harder rubber pad
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Dust on product
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Clean the surface of object
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Silicon Oil enter into ink
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Replace new ink
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4 Colour cross when miti-printing
Is a high-speed multi-color pad printing after printing the ink will stick before starting a phenomenon, this situation occurred in the substrate surface difficult to ink and solvent in case of infiltration of a large area printing. When the ink drying fast enough, and the shuttle table and the wheel table between the two stations to match the speed of change often occurs, usually rely on two sticky ink imprint of a pattern to solve this problem
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Possible causes
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Trouble shooting
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Occur Pore and Ageing of rubber pad
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Replace new rubber pad
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The depth of pad forme too deep
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Remake pad forme
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Halftone percent and screen density incorrect
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Renew output film with new halftome percent and screen density.
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Excessive thinner
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Adding ink
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Drying speed too slow
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Adding fast-drying thinner. Drying ink with Blowing-air.
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Product Too smooth
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Drying with cool wind and hot air between two times printing.
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Dust on surface of product.
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Clean surface with cloth
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