Originally Posted by
Bunce
Has the Dev unit got new filters on it? If they are not 100% clean, air pressure can build up in the Dev unit and puff toner out, seems to be worse after a Dev change. Failing that try replacing the Dev unit for a new one, I've had this problem with high mileage Dev units, as the mag roller gets covered in toner turning from silver to black! Toner then doesn't stick very well to the dev on the mag roller, and deposits itself everywhere. I have scrubbed the mag roller with a green kitchen scourer before now! Worth a try if you haven't already tried these things.
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