No. A laser printer prints using a drum and fuser. An impact printer prints by hitting an ink soaked ribbon with a print head. These are two completely different methods of printing.
Bright, like all laser. It is about as bright as a low power laser pointer. It is usually a class one laser and can not hurt you, but make sure you check it's class before opening the printer, though...
In a way they are. If you want to use the printer from multiple computers using a wireless connection, the wireless printer is the right one for you. They are also great for cutting down on clutter....