All PPDs should be available from www.cups.org
Yes, Easy Software Products includes PCL drivers for some AR series models with ESP Print Pro.
Send email to linux at e s b c . sharp - eu. com. if you need additional support.
Yes. It will at least give a good first idea.
Usually not. With few exceptions, these models are GDI only.
No. These models are GDI only.
Usually yes. With few exceptions, these models are capable of PCL and PS printing. This capability might require optional components.
Generally yes. Models with Fiery controllers will understand PS - PPDs can be found at EFI.
Yes. Postscript (optional) is recommended and supported. For PCL, use ESP Print Pro (non-free) or HP Laserjet drivers.
A driver is available for models with four ink tanks at openprinting.org.
Yes, both to email and ftp destinations.
In principle, yes - contact Sharp for details.