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Presssure Release(use for printing Envelop)
If opening the rear cover and pushing the pressure release lever to #1 direction, the space
between the pressure roller and Fusing roller is increased via cams, which releases the
pressure, and if pulling the lever reversely to #2 direction, the two rollers return to the home
position.
When printing on the standard paper with the status of the pressure released, the paper
can be printed with toner on it due to the contaminated fuser and the pressure roller. So
return the pressure release lever to the home position after printing on Envelop.