Yeah. My HP toner cartridge has been "empty" for about a year and is still printing fine! It has done more pages since it was empty than before it was empty.
CT scan shows there's still lots of toner left in an “empty” cartridge
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Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#22but also to say that typically when my toner cartridges start to say "empty" or get a few streaks, all i have to do is pull it out, give it a few firm taps all around (think tapping a nail into drywall) and then give it a few horizontal shakes to redistribute the material across the drum. I get 100s of more pages this way doing it multiple times.
Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#23The developer has fine metal particulates inside that "charge" the toner, enabling the toner to be pulled off of the drum, and onto the page.
Larger copiers have the Developer, and toner separate. However, the cartridge pictured is the full process unit.
Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#24I would like to see cartridges designed ecologically - refillable perhaps, or at least designed to flow as much out as possible - and allowing you to override the "toner low" warning and keep printing even if it's almost dry.
They used to be in some applications (like really big photocopiers). But toner is messy nasty stuff to deal with. Maybe refillable at a shop could work though.
Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#25Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#26Also, the difference between a full cartridge and an empty cartridge is minimal; about 20% of the toner reservoir is filled in a new cartridge, dropping to 15% when the printer says the cartridge is empty.
Sounds like a lot of space wasted?
Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#27Never, ever, ever buy a printer that takes cartridges. They’re discounted to at or below cost where they make the money back on cartridges. They use ink to clean the heads. They say empty when they’re not. The cartridges that come with the printer aren’t full. There is a constant firmware update war to defeat third party cartridges for obvious reasons. Buy a tank printer that you fill with ink bottles.
Even the starter Brother laser toner prints for ages.
Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#28Earlier quoted context omitted.
I have never used one, but I think it is interesting that Epson does sell a line of printers that have easily refillable ink reservoirs. https://epson.com/ecotank-ink-tank-printers
Inkjets have to be used regularly or they will suffer from clogs and in the case of Epson you're SOL if a head clean doesn't work. You can leave a laser idle for years and it will print fine.
Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#29Re: CT scan shows there's still lots of toner left in an “empty” cartridge
#30I would like to see cartridges designed ecologically - refillable perhaps, or at least designed to flow as much out as possible - and allowing you to override the "toner low" warning and keep printing even if it's almost dry.