What printing devices can a document examiner study in CSI?

What printing devices can a document examiner study in CSI?

Richard Saferstein (Former Chief Forensic Scientist) gives expert video advice on: What does a 'document examiner' examine in CSI?; What clues does a document examiner look for in handwriting evidence?; How is handwriting tested in CSI? and more...

Twenty five to thirty years ago, that would've been an easy answer. I would've said the typewriter. However, for the most part, the old-fashioned typewriter today is extinct. We still have photocopiers, faxes, and computer printers that have typefaces associated with them, and those items are commonly examined by question document examiners.