For quantities over 400, digital files are used no matter what the printing processes. Word files must be either converted into Postscript or PDF format or flowed into a page layout program. For quantities of 500 and under, covers are printed on a digital printing press, and for quantities over 500 they are printed on an offset printing press. Single color covers can be printed either from digital files or using clean laser copy as camera copy. The PPI can be found on your quotation next to the paper.
Dust Jackets for hard cover books are a little more complicated.
You not only have to allow for the thickness of the text paper but also the thickness and overhang of the binder board. For sample templates for cover layout or dust jacket layout please click here. General file requirements RJ's vendors support both Macintosh and Windows files. Providing PDF files for the book text is encouraged. Please send all application files.