I do my own printing on sizes up to 13x19 with a professional
model HP 8750 Photosmart printer with a nine color system. I only use upper
end photo paper such as HP Premium Plus or HP Advanced, or upper end Epson,
Kodak, or other brands.
I use
Vivera inks which Hewlett Packard claims will last 108 years.
Sizes greater than13x19 are outsourced to selected local professional
printers. Add up to three days more for larger poster size prints.