hplj2100 puts 3 dents in paper center right

[audreagrt]

My hp laserjet 2100 prints fine,but it puts three dents down the paper in center right. What is going on? How do I fix this?

[MichaelTech]

Look for something on the fuser film or pressure roller. Look at the transfer roller for anything stuck there. Look for something stuck on the toner.