The Brother MFC-J4340DW printer determines the ink levels in the cartridges by using specific methods.
The Brother MFC-J4340DW printer determines the ink levels in the cartridges by using specific methods.
I'm not sure which board fits this subject, so I shared it here.
In any case, I'm asking this after purchasing a new Brother MFC-J4340DW. The ink cartridges, which are model LC426, seem quite different from the ones in my mother's Brother multi-function printer—though I don't remember its exact name.
The cartridges in my printer don’t have a small window like most Brother models; instead, you can cover them with tape when the printer shows "Replace ink" to reset and use all the ink.
Additionally, there’s a tiny chip above the cartridges.
On the ink volume display, numbers are shown that might indicate how many pages you can print with them.
But the cartridges themselves remain transparent, and the ink is visible, unlike most cartridges that have large visible chips on a more obvious PCB.
My main question is: how does the Brother MFC-J4340DW actually measure ink?
Brother MFC-J4340DW details how inkjet printers assess leftover page outputs. Brother Support
I know that the small chips inside the cartridges are smart components that track how many prints they've made, and when they reach their expiration date, the printer shows a message to replace the ink. Odd, since I didn't discover any tools for resetting the LC426 cartridges and also didn't find guidance on removing that "Replace ink" warning.