three points on impact and no impact printers.
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Impact Printers
Impact printers operate by having an element strike the paper. In a dot-matrix impact printer, which is the most common type still sold as of October of 2012, the printer's print head has a vertical column of pins which fire in order to generate characters.
For instance, to make a capital "I" in a serif font, the top and bottom pin would fire, then every pin would fire, then the top and bottom pin would fire. The pins strike an ink-impregnated ribbon and press it into the paper, leaving a mark. One of the problems with dot matrix printing technology is that there are gaps between the pins, leading to output that has a number of gaps and looks incomplete.
Daisy wheel impact printers pressed a wheel with pre-formed characters, much like the mechanism in an electrical typewriter, against a ribbon to form an impression on a page. They produced very high quality output but could only print in a single font and character size. In addition, they were extremely slow.
Non impact printers
The printheads of non-impact printers do not strike the page. In an inkjet printer, a printhead sits a small distance above the page and either sprays ink or pops a bubble of ink onto the paper. Laser and light-emitting diode printers use electrical charges to transfer dry toner particles from a light sensitive drum to a piece of paper and then melt the toner onto it.
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Impact printers operate by having an element strike the paper. In a dot-matrix impact printer, which is the most common type still sold as of October of 2012, the printer's print head has a vertical column of pins which fire in order to generate characters.
For instance, to make a capital "I" in a serif font, the top and bottom pin would fire, then every pin would fire, then the top and bottom pin would fire. The pins strike an ink-impregnated ribbon and press it into the paper, leaving a mark. One of the problems with dot matrix printing technology is that there are gaps between the pins, leading to output that has a number of gaps and looks incomplete.
Daisy wheel impact printers pressed a wheel with pre-formed characters, much like the mechanism in an electrical typewriter, against a ribbon to form an impression on a page. They produced very high quality output but could only print in a single font and character size. In addition, they were extremely slow.
Non impact printers
The printheads of non-impact printers do not strike the page. In an inkjet printer, a printhead sits a small distance above the page and either sprays ink or pops a bubble of ink onto the paper. Laser and light-emitting diode printers use electrical charges to transfer dry toner particles from a light sensitive drum to a piece of paper and then melt the toner onto it.
......hope this helps......do rate and mark as brainest if this helps you.....comment if you have any doubts....don't forget to hit the thanks button below......
tejasgupta:
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The printheads of impact printer strike the page
while
The printheads of non. impact printer donot strike the page
The impact printer makes a lot of noise
while
non impact printer makes less noise.
The impact printer is very heavy and expensive..
while
the non impact printer is less expensive...
while
The printheads of non. impact printer donot strike the page
The impact printer makes a lot of noise
while
non impact printer makes less noise.
The impact printer is very heavy and expensive..
while
the non impact printer is less expensive...
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