Unfortunately due to the design of the printer we were not able to make a ciss continuous ink system fit in the Pixma TS3550i printer, in our opinion this is the next best thing you are going to find
Economink PG-575XL CL-576XL Remanufactured Ink Cartridge Replacement for Canon 575 XL 576 XL for PIXMA TS3550i TS3551i TR4750i TR4751i Printer Multipack: : Computer & Accessories
VC Premium Dye Ink Refill Kit Replacement for Canon PG275 and CL276 PG-275XL CL-276XL PG-275 CL-276 275XL 276XL 275 276 Ink Cartridge Refill Ink Kit for Canon Pixma TS3520 TS3522 TR4720
Compatible Refillable Ink Cartridge For Canon 560 561 PG560 CL561 PIXMA TS5350 TS5351 TS5352 TS5353 TS7450 TS7451 Printer - AliExpress
COLORETTO PG-575XL Remanufactured Ink Cartridge Replacement for Canon 575 XL for Pixma TS3550i TS3551i TR4750i TR4751i Printer Multipack: : Computer & Accessories
Cheap black refill pod pigment ink replaces Canon Pixma TS3550i - PG-575
Cheap Ink Refills for Canon printer
Hicor Remanufactured 575 XL 576 XLpg575 cl576 PG575 CL576 Ink Cartridge for Canon PIXMA TS3550i TS3551i TR4750i TR4751i Printers
Refillable pigment Cheap printer cartridges for Canon Pixma TS3550i 5438C001 PG-575 Pigment Black
Economink PG-575XL CL-576XL Remanufactured Ink Cartridge Replacement for Canon 575 XL 576 XL for PIXMA TS3550i TS3551i TR4750i TR4751i Printer Multipack: : Computer & Accessories
Canon PG510 Black Refill Kit 4-5Times O.E.M. Ink
Refillable pigment Cheap printer cartridges for Canon Pixma TS3350 8287B001 PG-545 Pigment Black
Hicor Remanufactured 575 XL 576 XLpg575 cl576 PG575 CL576 Ink Cartridge for Canon PIXMA TS3550i TS3551i TR4750i TR4751i Printers
Economink PG-575XL CL-576XL Remanufactured Ink Cartridge Replacement for Canon 575 XL 576 XL for PIXMA TS3550i TS3551i TR4750i TR4751i Printer Multipack: : Computer & Accessories
Canon Pigment Ink in Printer Ink Refills & Kits for sale
Canon PGI-35 Black Ink Tank 1509B002 B&H Photo Video