An envelope I printed came out dirty on the leading edge and stuck to it was what I can best describe as a little yellow brush. It is about 1 inch long and 1/8 inch wide and the nap is about 3/16 inch long. It has a sticky back and was obviously attached somewhere inside the printer.
1. What is it?
2. Where did it come from?
3. Is it necessary?
4. If so, how do I go about re-mounting it?