I purchased and adapted a vector graphic in RGB that I want to send to a printing bureau. The directions state:
- Convert text to outline
- Remove template lines before saving
- Keep the provided file dimensions
- Use 300 dpi as native resolution
- Apply FOGRA 39 color profile
- Avoid cropping marks and color reference bars
The conversion of the emojis from RGB to CMYK works fine when they have simple gradients but not with mesh gradients.
The graphic in Illustrator CS5.1 looks like this:
When I convert te document to CMYK, I lose the transparency in the mesh gradients:
If I rasterize the emoji, I lose the transparency around the edges. If I rasterize the whole image at the required 300 dpi the result looks poor:
How can I convert from RGB to CMYK and keep the transparency of the gradient?
The gradients in the original file are vectorial and use "screen" overlay mode to shade the underlying color:
I would rather not rasterize a vectorial document for printing. If I can't fix it, I'll remove the gradient meshes, but they had a nice touch and I would prefer to have them in.
I believe that the problem stems from the transparency overlay modes in RGB and CMYK. The mesh gradient has "screen" mode and it works in RGB and not in CMYK. Of all the available modes, the only one that seems acceptable in CMYK is "color burn" (see picture with the selected mesh), except that the result is a more saturated color instead of a lighter color.
So I believe my only options are to rasterize as is, or to redo the mesh gradients from scratch, right?