I have a problem occurring during the printing of a file. My background is 100% black with no other colors, but when I print a composite or separations I encounter the attached problem of some areas being darker than others.
Originally I was having issues with areas around the almonds and bee being a more grey and the rest of the black area. From this I rasterized during print (flattening), but then this issue arose.
Thing I tried:
1. Made sure all colors are process
2. Overprint solves issue but turn everything murky
3. Checked for any stray elements
4. Results were the same after PDF export.
My concern is that this will show during print. This label is expected to run on an offset press.
I am using CS4 on a Mac printing through Fiery RIP to Docucolor12. I have exaggerated the results for clarity.
I appreciate any help.
Looks like it might be a transparency flattening issue known as YDB, and it might very well show in print, depending on the RIP and how the PDF is prepared. See InDesignSecrets » Blog Archive » Eliminating YDB (Yucky Discolored Box) Syndrome
Thank you for the help!
I had already looked at that page before, but it got me thinking about the transparent alpha channel of the images that was originally the problem. That eventually lead to the use of trying a clipping path and cutting out the alpha channel all together and behold the problem was fixed. I isolated the problem using a black separation.
For the future, I have attached another exaggerated scan for anyone else's reference.