Brother HL - 3140 CW leaves marks on paper. The debossed marks are caused by pressure of some parts but i can't seem to find what part and where it is located.
Brother HL-3140 Series Reviews, Pros and Cons | TechSpot
KIT LOWER PRESSURE + UPPER FUSER ROLLER FOR BROTHER MFC 9140 HL 3140 HL 3170 MFC 9130 MFC 9330 MFC 9340 - Extra Parts, Inc.
Amazon.com: Good Fuser Upper Roller for Brother HL-3140 3150 3170 DCP-9020 MFC-9130 9140 9330 9340 Heat Roller : Office Products