Printing Test

One color Sealed cup Pad Printer
Pad Printer Printing Test Trouble-shooting 1-2
                                              
1   Graphic fuzzy, poor edge definition
.
Possible causes
Trouble shooting
Rubber pad too soft
Replace more harder rubber pad.
The shapeof pad is unsuited
Replace Matched rubber pad
Depth of Forme too deep
Remake pad plate with shallow depth
Incorrect Film screening
Output film with another screening parameter
Ink film too thick.
Adding some thiner to ink
Drying speed of ink too slow
Adding fast-drying thiner.
Printing stock is polluted.
Clean the surface..
Corase ourside of products.
Replace harder rubber pad
Rubber pad slide
Replace fixture and aviod pad sliding
Fixture stabilty not well
Remake fixture, reduce printing speed.
 
2         Poor ink Adhesion
 
Possible causes
Trouble shooting
Silicon oil remains of rubber pad
Clean the rubber pad with Solvent
Pad forme Depth too deep
Remake pad forme
Ink is not matched
Replace another type ink
Use bi-Component ink
Replace Bi-component ink
Incorrect Hardner percent
Please Precision addng hardner
Dirty surface of product
Clean the surface with Solvent
Need surface Treatment
Take flame treatment or Chemical treatment
Processing time is unsuited
Printing after treating soon
Insufficiency Post-curing
With IR dying or UV curing.
One color open inktray pad printer
Two colors pad printer with shuttle
Pad Printer Printing Test Trouble-shooting 3-4
   3. Pinhole  
Possible causes
Trouble shooting
Impairment surface of rubber pad
Replace rubber pad
Too Flat of rubber pad
Install more sharper rubber pad
Rubber pad too soft
Replace Harder rubber pad
Defect of pad forme
Remake pad plate
Ink too dense
Adding much more thinner.
Product surface too coarse
Choose more harder rubber pad
Dust on product
Clean the surface of object
Silicon Oil enter into ink
Replace new ink

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
 
Possible causes
Trouble shooting
Occur Pore and Ageing of rubber pad
Replace new rubber pad
The depth of pad forme too deep
Remake pad forme
Halftone percent and screen density incorrect
Renew output film with new halftome percent and screen density.
Excessive thinner
Adding ink
Drying speed too slow
Adding fast-drying thinner. Drying ink with Blowing-air.
Product Too smooth
Drying with cool wind and hot air between two times printing.
Dust on surface of product.
Clean surface with cloth
Two colours sealed cup pad printer with conveyer printing test
Conveyer pad printer

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