The dot matrix printing method allows a printer to easily form any desired character, It has a print head that contains 9 needles vertically and can create distinctive characters like with typewriter. In that sense it is one of the key features that the printer has. EPSON’s
See next how the print head works and forms a character.
(1)Dot Matrix Printer
The print head contains 9 “needles” or “wires” vertically. Each dot wire is driven by an electromagnet which fires when told to do so by the electronics inside the printer.
Signals from the computer cause the appropriate dot wires to be fired from the holder and to impact carbon, causing the character to be printed as a series of dots.
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Fig. 60 Dot Wires | Fig. 61 Formation of Character “E” | |||||||
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As an example (See Fig. 61) , to print the letter “E”, dot wires 1 through 7 are fired first. They hit the ribbon. That makes marks on the paper. Then the head shifts over a bit and dot wires 1, 4 and 7 are fired. In this manner, the character “E” is formed.
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