White type not knocking out

[Rtanner]

We're a printer with a client who created an ad in Publisher. They used white
type on a cmyk color background. This type does not print when we send a
composite cmyk postscript to our RIP. (This is how everything is sent) When
we send separations, however, it is there. Upon preflight in Acrobat
professional, there is nothing set to overprint or non-printing. Any ideas?

 

[Mac Townsend]

almost always when white doesn't print it is because the document
generator set it to overprint. Sometimes they will put a white box
behind the background color and put the type to "none" instead of white,
cuz on screen that looks right.

have you inspected the color/object in Publisher itself (or have you
gotten simply a PDF?--if so, are you looking at it with overprints on or
off in Acrobat?)