How do I preflight for an item with zero fill and is knockout (but the designer thinks has a fill)

Post Reply
cwswitch
Member
Posts: 64
Joined: Fri Feb 24, 2017 12:25 am

How do I preflight for an item with zero fill and is knockout (but the designer thinks has a fill)

Post by cwswitch » Wed Jan 02, 2019 3:31 am

Examples here https://drive.google.com/drive/folders/ ... sp=sharing Though they appear to have the same settings, File 'A' ripped OK and File 'B' did not.

The results when ripped and printed was solid white circles as the RIP is (correctly I believe) knocking out beneath the circles.

The expected result by the designer was semi opaque white circles with the background showing through (it displays this way in Acrobat).

1) How do I catch such jobs in Preflight?
2) How do I fix them when caught?

Many thanks!

Zoranj
Member
Posts: 63
Joined: Tue Sep 20, 2016 7:37 pm

Re: How do I preflight for an item with zero fill and is knockout (but the designer thinks has a fill)

Post by Zoranj » Wed Jan 02, 2019 8:29 pm

As far as I can tell, in my test there is nothing wrong with either PDF and they rip same way they preview in Acrobat.
Designer is correct in this case and your rip is either old/outdated or you have improper setting.
Circles are part of the Transparency group that is not set to knockout.

I hope this helps

cwswitch
Member
Posts: 64
Joined: Fri Feb 24, 2017 12:25 am

Re: How do I preflight for an item with zero fill and is knockout (but the designer thinks has a fill)

Post by cwswitch » Wed Jan 02, 2019 11:24 pm

Thanks for that.

I have investigated further and found 2 steps in prepress that are causing the error. I'm not sure now how the steps are causing this though

At the same link https://drive.google.com/drive/folders/ ... sp=sharing I now have "A LF" and "B LF" these files have had a step done in prepress.

If we then run the "Add bleed" action, the transparency breaks. - I don't know why :?

cwswitch
Member
Posts: 64
Joined: Fri Feb 24, 2017 12:25 am

Re: How do I preflight for an item with zero fill and is knockout (but the designer thinks has a fill)

Post by cwswitch » Thu Jan 03, 2019 10:39 pm

I have now fixed this.

The cause was that prepress run a Quite Hot imposing action followed by a Pitstop action. There is nothing wrong with these tools normally, but these two actions when run one after the other break transparencies.

I have replaced the Quite Hot action with a Pitstop one that achieves the same goal and the transparencies are maintained.

Post Reply