New answers tagged print
Raster images are treated as a whole. You can't specify plate interaction within raster images. If it were me, I'd use the black from Photoshop and set it to overprint, then draw a white shape in Illustrator behinds the raster and group the two.
A pixel is a pixel. Format makes no difference. If it's a raster image, it's always pixels. Tiff is a common format for print because it supports many things other formats do not. (Or did not years ago.) Clipping paths High ppi CMYK color Internal lossless compression (if set) Universal format Embedded Color Profiles Years ago (before the web) there ...
.tiff is a file format that is a container for holding image files usually a lossless file that has retained all it's information including tags and other important information about the graphic (as opposed to a jpeg which has a lossy compression that forfeits resolution, color and other information for a smaller file size). Usually, .tiff's are really ...
Two considerations I'm aware of: Misregistration Assuming this is based on overlaid inks (e.g. CMYK) not premixed inks (e.g. Pantone spot colours), it's not a bad idea to try to minimise the number of inks used in the colours in thin or high detail areas such as thin lines and fine text. This is because for fine lines, tiny registration errors ...
In most cases, a minimum line weight for commercial printing is .25pt. Anything that weight or larger should hold up just fine. Keep the .25pt in mind if you reduce an image.
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