Review on E-Z Ink (TM) Compatible Ink Cartridge Replacement for Canon PGI-270XL PGI 270 XL - Compatible with PIXMA 🖨️ MG6821 TS6020 MG6820 MG5720 MG5721 MG5722 TS5020 TS8020 TS9020 MG7720 Printer - Large Black, 4 Pack - Best for SEO by Bob Ramthun

6100 (at least ) have room for a chip in their own ink cartridges, resulting in the printer not being able to work without those special cartridges which are ridiculously expensive . The whole thing was very annoying and is entirely up to Epson. I'm not inclined to buy another brand of printer just to appease my anger. I think alternative cartridge manufacturers should be aware of this.