The main types of printers used for domestic and professional use are:

a) Matrix/Dot-Matrix, thermal and ink-jet printers are commonly associated with computers, and

b) Laser Printers – Documents produced by laser printers have the general appearance of good photocopies. Used with computers and word processors

A skilled forensic document examiner can determine what kind of printer produced a specific document and if allowed access to the machinery whether the document was produced by the particular printer.