Re: Violet vs. Thermal
Hi prepper,
You ask about the plate technology, we choose silver for its higher quality. We run it up to 300 lines with this plate but we can go to 400 with thermal. We have been using it side by side with Thermal for 6 years and do not see a quality difference unless you wanted to exceed 300 line. I asked if you are in the U.S.? I am only speaking for what we do here.
No silver does not necessarily mean a cleaner processor, you do get some sludge from photopolymer which is a different dirty shall we say.. Both processors will require cleaning. For years, we have add a device called Mini ProWash that helps keep the processor cleaner for a longer time.
If you have no desire to exceed the 175 line you image, either plate will work. Photopolymer is sensitive to humidity swings, low humidity will required more energy to get the proper exposure. Check the specs from the manufacture and see if you room is set up to meet it. If not, you will need to add some control to avoid potential problems. If you are in spec, you should be ok. Other factors have to be taken into consideration that will lead to what will work for you. What is your longest run length? If you need over 350,000, silver will not be a solution for you.
You have a Harris web. With any CtP, regardless of laser, when it comes to web presses, you need to look at the clamping on the CtP to see if it clears your bend. and printable area. Some webs have a short distance from edge of plate to begin of print and from edge of plate to end of print. If the CtP plate clamp is larger, it will not be able to expose in that area. What is the bend from leading edge and trailing? What is the begin or print and end of print?
If you are in the U.S., I can have one of our reps review your needs and help determine what may be the best fit for you. If you do decide on our violet Prosetter but decide you want a different plate, the Prosetter has been certified with just about any violet plate that is commercialized, you are not locked into one vendors plate, you have a choice.
PM me if you would like a Rep to contact you. Good luck!
Best regards,
Mark Tonkovich
Heidelberg USA
Product Manager, CtP & proofing
[email protected]