I have Hp color laserjet 2600n -when i print a

According to HP if the problem is only when you print from your PC or Mac then you need to reinstall the printer driver. If the problem is also when you print just from the printer, i.e. scanning or test page, then the problem is with the printer.

We've solved our problem with the fading red tones. It's dust build up on the mirrors and lenses. Very, very, touchy area! The entire machine needs to be taken apart and those areas cleaned. We did that and it worked like a new machine, but, WOW, quite the process. You need lots of patience! I found the info on how to take the machine apart on a website by Don Thompson's Service Seminars. I don't have the website anymore, but you should be able to locate it with his name. It's labled FADING RED TONES ON COLOR LASERJET 2600s. Good luck

i think like Mac technicians, the problem are in your printer, you need remove from the printer the laser/scanner assy, and clean mirrors and lenses, reasembly and try.