print quality

Hello. I read advice here about using PTFE oil to lubricate printhead rails. I have PTFE bike chain lubricant for dry weather. After applying it the printer no longer squeaks when printing. I performed cleaning using cleaning liquid that had syringe, tube and adapters in the package because it...

Hello everyone, I am new to these forums but I am glad they exist! I acquired an old Hp Color Laserjet 4500n and I just have to say, it's an awesome machine! I replaced drum,fuser, all toner, and I have a new transfer belt on the way, I have managed to get it to print black and white just...