Dot matrix printers rely on a printhead in which a grid of 9 or 24 pins forms combinations to produce text, box-drawing characters and symbols made up of closely spaced dots. These devices superseded ...

Hackaday gets results! Reader [John] saw our recent Fail of the Week post about a “sand matrix printer” and decided to share his own version, a sand-dispensing dot matrix printer he built last year.

While laser and inkjet printers are increasingly popular, older technology still has value in daily life. Dot matrix printers are similar to manual typewriters, with a history dating back over 100 ...

A printer that uses hammers and a ribbon to form images from dots. Used to print multipart forms and address labels, the tractor and sprocket mechanism in these devices handles thicker media better ...