I use both a mc'book pro and mc' book,

[ChairmanAgnostic]

connected to a a 6300 Phaser Color high speed printer. Being the grinch, scrooge, and curmudgeon, I have been using an off brand black toner supplier. Recently, I replaced (w/ xerox) the imager and the transfer roller.

the PDF files now print blank. I have to save them as a tif, page by page, or in another format. Also, PAGES pages are all blank.

I changed no printer or OS setting. I kinda doubt that it is the offbrand toner, since saving it page by page, I still get the image. Yet, I can print GREAT photos in color & B&W with iPhoto.