Impact printers

strike a ribbon against the paper to produce character images
include ink-jet and thermal devices
are more expensive than Laser printers
use optical technology E. None of the above

The correct answer is A. Impact printers strike a ribbon against the paper to produce character images.

Option B is incorrect because ink-jet and thermal printers are non-impact printers.

Option C is incorrect because impact printers are typically less expensive than laser printers.

Option D is incorrect because impact printers do not use optical technology.

Option E is incorrect because option A is the only correct answer.