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Roland LEJ640 print gloss onto existing press sheets

agonyofcain

agonyofcain

New Member
I have the pleasure of trying to basically 'imprint' gloss ink onto a logo on 19x25 press sheets to give it a pop, they want UV and our press cannot perform this inline so somehow I have to hit it perfectly on our LEJ640 hybrid after the fact. I have spent a few hours putting in one sheet at a time and seeing where it prints it then I measure how off it is and tweak the PDF file. Over and over I have done this and still cannot get it exact. Even when I put a sheet in and print and then put a 2nd one in with same settings and position they never match. One could be farther off than previous sheet. This big brained idea came from management and I said no way could I send 500 press sheets one by one through this machine and get one small 2 inch x 1 inch rectangular logo directly where it needs to go. So far I have done 15 sheets and I have not even come close.

Has anyone ever tried something like this?

I don't think versaworks and even the LEJ640 is smart enough to line up exactly with settings.

What I have done file wise is take my 19x25 ripped PDF out of XMF and deleted everything out except the logo. In versaworks I selected special effects and use the special color plate as gloss for the print area. I would then drop a sheet into the printer and print and see how off I am and then I would measure and tweak the PDF and try again. So my main issue is not being able to line it all up. Setting the basepoint hasn't worked either.

Let's save money and try in house they say!! Rubbish.
 
R

Roland Certified Tech

New Member
Are you using the blue alignment plates on the platen to get the front of the board set?
The using the etched line to set the right edge of the board on that line.
Then use the Base Point function to get the left/right starting position.
Also can manually add the width on the printer.
Check the Side Margin and Front margin settings as well.
All described in the User Manual

You should be able to get repeat prints.
My customer prints 4x8 sheets emulating 1”x1” tile with grout and like 10+ layers of gloss.
Looks just like tile.

 
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