When the Save each page as a separate file option is selected, the driver saves every page of a multipage document into a separate file. For example: the document printed is “a.txt” (3 pages) into PDF, The output files will include 6 digit for page numbers:
a000001.pdf
a000002.pdf
a000003.pdf
Single page documents printed with the “Save each page as a separate file” option enabled, the output file will have the post fix of “000001”, since the driver does not know how many page(s) in the printed document.
NOTE: Certain file formats, for example, JPEG, do not support multiple pages. In these cases this option is not available.