problem

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...

If is use Epson Scan 2 or Apple Image capture on my Mac and scan a document with black text/graphics on white paper it looks good. If I use Epson iPrint on my iPad or iPhone to scan the same document I get a bluish gray background. Both scans were color and 300 dpi. I have attached a file...

Hoping someone can diagnose my problem. Just bought a "new" used HP laserjet pro m402n. Everything setup perfectly and it is on the most current firmware. It is configured to print through a network connection and I've purchased two refurbished toner cartridges. When I print a document it...