Complex sentence: Most consumer inkjet printers, from companies including Canon, Hewlett-Packard, and Lexmark (but not Epson), use print cartridges with a series of tiny chambers each containing a heater, all of which are constructed by photolithography.
Split into simpler sentences: Most consumer inkjet printers, from companies including Canon, Hewlett-Packard, and Lexmark (but not Epson), use the thermal inkjet process. In the thermal inkjet process, the print cartridges contain a series of tiny chambers, each containing a heater, all of which are constructed by photolithography.