Art file requirements for screen printing
Vector art files with fonts provided or outlined are required for screen printing. When using raster art for images like photographs the resolution (dpi or ppi) needs to be 200 dpi.(minimum) at 100% print size.
If art is created in “In Design” the file must be exported as an Illustrator eps file with all images re-linked and transparencies flattened.
Art file requirements for digital printing
Photoshop tiff or eps files with 150 dpi or higher are required. Rastar, lower resolution files like .jpg .bmp .gif can not be used.