Asked by
ashu roadies
in
Computers & Accessories
at
2:59 PM on November 03, 2008
Anshu's Answer
Hi Ashu,
Dot matrix printer has different mechanism as compared to other lasor printers or intjet etc. due to its different mechanism, we can give commands for bold or italic prints also.
I am describing you how does it work :-
Actually, there are several tiny pins, aligned in a column, striking an ink ribbon positioned between the pins and the paper, creating dots on the paper. Characters are composed of patterns of these dots by moving the printhead laterally across the page in very small increments.
The pins, contained in the printhead, are about one inch long and are driven by several hammers which force each pin into contact with the ink ribbon (and paper) at a certain time. The force on these hammers comes from the magnetic pull of small wire coils (solenoids) which are energized at a particular time, depending on the character to be printed. Timing of the signals sent to the solenoids is programmed into the printer for each character, and translated from information sent by the codmputer about which characters to print.
bye and take care
Answered at
3:07 PM on November 03, 2008
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