Unfortunately due to the design of the printer we were not able to make a continuous ink system fit in the Pixma MG3650S printer, in our opinion this is the next best thing you are going to find with
Canon Pigment Ink Cartridge Black PG660
Canon Mg5420canon Pg560xl Remanufactured Ink Cartridge For Pixma Ts5350/ts5351/ts5352/ts5353
Canon MG3650 Printer Ink Cartridges
PIXMA MG3650S Ink/ Toner cartridges & Paper — Canon UK Store
Original Black Printer Ink for Canon Pixma MG 3650 Canon PG540 (PG-540 5225B005 – Premium Cartridge – Black – 180 Pages : : Computer & Accessories
Canon Printer Ink Cartridge
Canon PG 540 Ink Cartridge For PIXMA Printers
Canon MG2570S Multi-function Color Inkjet Printer (Black, Ink Cartridge) (Refurbished) – Renewed Excellence
PIXMA MG3650 Ink/ Toner cartridges & Paper — Canon UK Store
Canon PIXMA MG3620 Printer - Black
PG745 CL746 Replacement Ink Cartridge for Canon Pixma MG2470 MG2570 MG2570S MG2970 MG3070 MG3077 TR4570 Printer pg745 cl746 - AliExpress
PG-540XL Black Ink Cartridge For Canon PIXMA MG3650 MG4100 Printer 8714574572550
MG3650 Ink