marking photopolymer plates

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marking photopolymer plates

Postby mrgraphixs » Wed Jul 23, 2008 3:17 pm

Has anyone found a permanent way to mark a photopolymer plate that will not come off with normal Propyl alcohol?
Is there a good scribe, heated scribe or permanent marker that will hold up?
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Re: marking photopolymer plates

Postby macmanpcg » Wed Jul 23, 2008 10:00 pm

Can you make a solid block and reverse copy as a positive so it can be read from the backside? You can image this on plate and film or just make codes off line and tape them down if necessary.
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Re: marking photopolymer plates

Postby mrgraphixs » Thu Jul 24, 2008 7:43 am

Yes, I can do this, but I don't want the labeling info to actually print. It has to remain on the plate though. Thanks for the idea.
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Re: marking photopolymer plates

Postby macmanpcg » Thu Jul 24, 2008 12:28 pm

Can you change the type and place it on the back side of the plate and use your back exposure so it is in the floor?
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Re: marking photopolymer plates

Postby mrgraphixs » Thu Jul 24, 2008 12:50 pm

Yes, we could, but these would be very time consuming for us since we "gang" shoot several jobs together.
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Re: marking photopolymer plates

Postby exflexo » Thu Jul 24, 2008 5:01 pm

You can use an item available at any graphic arts supplier called a Pin-Vise. It is basically an exact-o type of knife, but it holds a pin that you can scratch the plates.

I also used a cheap soldering iron available at Home Depot. It is skinny and has a pointy tip and will burn the plate. You can almost write with it like a pen, but it takes some practice and takes a long time to warm up.... works good... but definitely practice on scrap material. The pin vise is a easier to work with.
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Re: marking photopolymer plates

Postby Gorilla Printer » Fri Jan 11, 2019 12:08 pm

Text written in permanent black marker,then repeated again with small soldering iron over the top .
Cheers
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Re: marking photopolymer plates

Postby Frank Burgos » Tue Jan 29, 2019 9:32 am

A machinist's scribe. Scratch the ID on the plate floor.
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