Dot matrix printers

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Dot matrix printers

  1. 1. Dot Matrix Printers 1
  2. 2. How it works: ● ● Punches ink onto the paper, like a typewriter. Uses patterns of dots to make letters. 2
  3. 3. How it works: ● ● Letters are made up of patterns. Usually 7 dots vertically, but variations have been observed. 3
  4. 4. How it works: ● ● Each character has a map of dots that are printed. For example: – H has 7 dots in the first column, two dots in position 4 for the next two, then 7 dots for the final part. 4
  5. 5. Found in: ● ● ● Anywhere where price is key. Anywhere where quality doesn't matter. Payslips, reciepts, paperwork . 5
  6. 6. Pros and Cons ● ● The cheapest per page method for printing. Simple to build and maintain. ● ● Very low resolution. Doesn't cope that well with colour. ● 6

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