[57FkMytWjyFu]

Doesn't make it any less frustrating, at least Brother could say something in the manual, but this may be the proximate cause.

https://www.howtogeek.com/how-your-printer-leaves-invisible-...

[rawgabbit]

Wow. I had no idea these yellow printing codes were required by the Secret Service.

I also have a color Brother printer. I switched the cartridge to monochrome years ago. Now I know whose to blame for using up all the yellow.

[SimonPStevens]

Yeah, I suspected this could be related. Additionally frustrating as I'd honestly not a massive fan of printer dot codes either.

[EvanAnderson]

That's my suspicion, too, being that it's yellow that's empty.