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Happy New Year!!! I want to thank you all for your time, advice and expertise in helping with our premature plate wear problem. I had that "Eureka" moment the Friday before Christmas and went home a very very happy chappie. I believe we have found the cause and are currently doing a longer...

Hi Alois, good questions....What has changed? 1) Are the plates correctly imaged? - I don't know is the simple answer, my background is in print. If anyone can shine a light on this question I would be extremely grateful. 2) Develop a set of plates off Press and trial - We have tried another...

CPTthighs, that's the annoying thing, we haven't changed nothing 4 Months ago. The Variable we have changed; rollers, fount solution have been gradual changes over the last couple of years.

Hi simonw999, regarding our press chemistry, we have it checked weekly by our Ink Manufacturers, and also by our Fount and roller suppliers as well as a Monthly audit. So I am happy with that side. We have been running without alcohol since 2009 and successfully running on Processes-less plates...

I'll start from the last post and work back - Hi Dan, I will chase up your "multi-layer emulsion" question with our Representative. As far as plate wear goes, it is usually in the Magenta and Cyan in the fine hight-light areas to go first.

Heidelberg's - we have 3 different types, XL's, CD XL and the old 4 col 102 - Not all presses have the long runs that show up plate wear but when they do it's common across the board. On the 4 colour at the moment we are changing plates after 45,000 sheets where last year we would have got...

Hi cementary, If you look at "pre-damping", this will wash out the plate and all the blue coating will go back into the fount system. I have washed a single plate out today and believe me, there is quite a discolouration from the coating that comes off. Best way in my opinion is to start press...

Hi goldy, cheers for the comments - I really appreciate all your advice. I have just acquired a digital pH tester to keep a closer eye on this. We do have weekly audits by our ink suppliers who check the water hardness, pH and conductivity etc. We have a Reverse Osmosis unit to which we add 0.5%...

Good morning, again thanks for you input. "Fount" is the term we use in the UK so you guessed correctly. We tend not to run with the Forme rollers oscillating only in exceptional circumstances. Although we do run with the "Vario" selected on most jobs. This could cause an abrasive action to the...

Hi CPT, thanks for your reply. Both 1 and 2 machines have similar plate wear in comparison. Depending on the substrate it varies as to which colour wears the quickest. Usually the Magenta, followed by yellow and cyan with black being the least affected. Our 3rd machine with the original fount...

Until August of this year, we were successfully printing runs of 80k to 180k depending on substrates. Since we noticed the premature plate wear problem we have had jobs that needed new plates after less than 30k. At the moment we average a print run length of between 30k and 75k. We have always...