This is what I found when Googling how to print in white.
Not very helpfull as it would be very expensive if thats all you wanted one for.
CraftingNew PrintersPrint Tips & Advice
White Ink Printer, The Xerox C8000W
by Adam Whitehead12 March 20210179
Xerox C8000W White Toner Printer
The Xerox VersaLink C8000W is a white ink printer, capable of printing media up to A3.
Printing in white helps you to add a punch to your prints on all types of media from colour paper to darker card and even some transfer sheets. However, there is not currently a white Inkjet printer available, they are all Laser.