Why do some PDFs fail to print correctly with the Lulu printer?
Even when PDFs are not rejected before the printing process, some books printed from PDFs submitted by authors do not print accurately. Not all the reasons for this are knows. What Lulu can say from experience is that books submitted as more than one PDF present the greatest problem. The problems with multiple PDF submissions appear to be greatest with those that have various fonts that are subsetted. Until Lulu gains more experience with such failures the best recommendations are: 1) Produce your book as a single PDF from a single application, if that is practical. 2) Be sure to select your PDF creationware’s “embed all fonts” option and unselect the option to embed fonts as subsets. 3) Do not edit the PDF once it is made. If edits are required, remake the PDF. 4) If you use technical applications (TeX and LaTeX are examples) to create documents with special symbols you may find these symbols are created as “bitmap” images. You may have to do some extra homework to figure out how to b
