no,they are non-impact printers.these use a high-velocity stream of ink toward the paper.this stream is deflected generally by using an electrostatic field.
Yes. Source: http://en.wikipedia.org/wiki/Inkjet_printer [At the bottom of the source link, the categories state "non-impact". Find is your friend, just got to know where to look.]
Nope they are categorized under impact printers. Some examples of non impact are: line printer, daisy wheel printer, golf ball printer, dot matrix printer, Braille printer.
self explanetory really, and ink-jet printer 'shoots' a jet of ink at the paper in tiny tiny dots, covering a sheet in ink to whatever picture you asked it to print. It really just a 'Printer' but is...