Oki 9300 Toner Sensor Error
Thought I'd write about my adventures with my Oki 9300 Laser printers in case it helps someone.|
Don't have all the answers yet, but I know more today than yesterday.
I refill my toner cartridges with Uninet toner an every now and then I get a toner sensor error and never could find a satisfactory explanation online so I totally pulled a cartridge apart to see what made it tick.
I have two Oki 9300s and one Oki 7300 and the mechanics of the toner cartridges are the same.
The toner sensor apparatus works like a crankshaft in a car in that it has a horizontal agitator bar that pushes a vertical bar up and down on the blue handle end of the cartridge.
The vertical bar has a little magnet on top and it fits in a hole where you see a little square of the toner color on the top of the cartridge.
Directly above that little square (in the top cover of the printer) is another magnet hanging from a little bar.
You can test that it's a magnet by putting metal close to it.
I'm guessing that these two magnets have to make contact on every revolution or the machine turns on the toner sensor error message.
I think what happens is that I occasionally overfill the toner cartridges (particularly black because you can't see anything) and the excess toner jams up the horizontal agitator bar and the bar can't turn and push the little magnet up to make contact.
I suppose the same error would show up even if you didn't refill cartridges. For instance, if the toner got "caked up" on the non-handle end of the cartridge it could cause the horizontal agitator bar to jam.
Next time I get a toner sensor error I'll take out some toner and shake the remaining toner and cartridge to make sure it's loose and see if that fixes it.
My next experiment is to try to rehab an image drum. I bought some parts from Uninet for this project also.
I predict that the floor, walls and ceiling of the work area will be CMYK in short order.