Laser Printer advice needed

[Greg Trigeiro]

I am looking for a color or b/w laser printer that will print mail merge addresses on envelopes without jamming. Envelopes being too thick for most laser printers. Also it would need to be a printer that does not need to have each envelope fed to it one-at-a-time. Its OK even if the tray or feeder only holds 20 or so at a time. The most important thing is it must be able to handle regular number 10 envelopes and not jam.

I don't want an inkjet printer.