While this is amazing site for reference, it usually doesn't replace buying sheet music that you intent to perform. Sheet music is generally printed in various large formats (which is nicer for reading music, but means you need a large format printer). Scaled down to common sizes will make the music to small.
So if anyone is looking for a product to produce: A large format B&W laser printer that is consumer priced - basically a musicians printer. There are consumer priced large format printers, but they all seem to be inkjet.