Specification :

PRO3800 Bulk Ink Delivery System, Pro 3800 Refillable Cartridges,

No more any new maintenance cartridges needs.
Each color 120ml per Carts. You can print as much as you need.

K4 Ultra Chromo Pigment ink,

No vacuum ink
No meatiness problem
No technician need, just insert the cartridges and printing.

International Patent:

Patent No:
M254344, M323391,