image= 1, all pages will be rasterized, and sent to the printer as images.
This setting is only relevant for GDI printing, i.e., for
non-PostScript printers, or if
pdfPrintForceGDI is in effect. It
is ignored when XpdfPrint generates PostScript code.
pdfPrintResetParams resets this to its default value of 0, which
means to optimize by using GDI operations where possible.