Double-sided laser printing

What happens if you run paper through twice?

[MatthewHSE]

I'm looking very seriously into buying a laser printer, but I need to know about duplexing. I sometimes need to print double-sided documents, and with my inkjet, I just run the paper through twice. But I've heard that's not a good option with a laser printer. Never having used a laser before, I don't know exactly what would be wrong with that. Does anyone have any experiences or advice to share on the subject?

[Macro]

Because of the higher heat in the laser printer the first side may get smudged when you run the paper through again. I haven't had that problem on any of my lasers though (the first one I had was a £10,000/50 kgs Laserjet5 many moons ago, the latest a £100 Brother multifunction colour laser).

[moishe]

If you are going to be doing a lot of double sided printing, you should look at lasers with built in duplexing. I have an HP 2420d, works just fine for double sided printing.

[supermanjnk]

I'd recommend an HP aswell, Minolta's are nice too.

[lZakl]

I use a HP Laserjet for my general printing needs... However you never mentioned what you'll be using this laser printer for?

Being in the business of Pre-Press though, I print several professional letters, flyers proofs for advertising, etc. I use the Xante Accel-a-Writer 4G for this. It's duplexing has worked flawlessly since I've owned it. Granted this printer is only 8 months old, but I used the 3G for 5 years and had 800,000 copies through it and it's still running. I even have my old Xante Accel-a-Writer 8300 with over 1.7 million copies through it, and it still works (albeit a little shakey). Great printers for professional use. Xante is also who makes the plate-burners and image-setters we use.