What are the differences between dotmatrix, inkjet and laser printers?  

The Dot Matrix printer uses a set of pins that pop out and leave ink on the page in the shape of what it is you are printing. Don't ever take that head apart as it's tough to get back together.

The Ink Jet uses hot ink explosions to spay the ink on the page in fine dots. Usually this print head comes with the ink cartridge.

The laser printer uses toner dust that is attracted to the page only where there is an image so that the image gets the toner and the rest of the page rejects it. And this method is more optical than the others.

Dotmatrix : In this printer u get letters of Dot Combination.. This is the Slowest among three..

Inkjet : this is a better one than Dotmatrix and this use a Carteraidge

Laser: This is th ebest among the three. this uses laser for printing. This is also the fastest among three..

dot matrix printer is specifically used for impact printers that use a matrix of small pins to create precise dots. The advantage of dot-matrix over other impact printers is that they can produce graphical images in addition to text; however the text is generally of poorer quality than impact printers that use letterforms

laser printer is a common type of computer printer that rapidly produces high quality text and graphics on plain paper. Like photocopiers, laser printers employ a xerographic printing process but differ from analog photocopiers in that the image is produced by the direct scanning of a laser beam across the printer's photoreceptor.

Ink jet printers use one of three main technologies: thermal, piezoelectric, and continuous.

Thermal Ink Jet

Most consumer ink jet printers (Hewlett-Packard Canon) work by having a print cartridge with a series of tiny electrically heated chambers constructed by photolithography. To produce an image, the printer runs a pulse of current through the heating elements. A steam explosion in the chamber forms a bubble, which propels a droplet of ink onto the paper (hence Canon's tradename for its inkjets, Bubblejet). The ink's surface tension pulls another charge of ink into the chamber through a narrow channel attached to an ink reservoir.

The ink used is usually water-based, pigment-based or dye-based but the print head is produced usually at less cost than other ink jet technologies. The technology principle was discovered by Canon engineer Ichiro Endo in August 1977.

Note that this is not the same thing as a thermal printer, commonly found in ATMs and cash register receipt printers.

[edit] Piezoelectric Ink Jet

All Epson printers and most commercial and industrial ink jet printers use a piezoelectric material in an ink-filled chamber behind each nozzle instead of a heating element. When a voltage is applied, the crystal changes shape or size, which generates a pressure pulse in the fluid forcing a droplet of ink from the nozzle. This is essentially the same mechanism as the thermal inkjet but generates the pressure pulse using a different physical principle. Piezoelectric ink jet allows a wider variety of inks than thermal or continuous ink jet but is more expensive.

The emerging Ink jet material deposition market uses ink jet technologies, typically piezoelectric ink jet, to deposit materials on substrates.

[edit] Continuous Ink Jet

The continuous ink jet method is used commercially for marking and coding of products and packages. The first patent on the idea is from 1867, by William Thomson. The first commercial model was introduced in 1951 by Siemens. In continuous ink jet technology, a high-pressure pump directs liquid ink from a reservoir through a Gunbody and a microscopic nozzle, creating a continuous stream of ink droplets. A piezoelectric crystal effects an acoustic wave as it vibrates within the gunbody and causes the stream of liquid to break into droplets at regular intervals - 64000 to 165000 drops per second may be achieved. The ink droplets are subjected to an electrostatic field created by a charging electrode as they form. The field is varied according to the degree of drop deflection desired. This results in a controlled, variable electrostatic charge on each droplet. Charged droplets are separated by one or more uncharged “guard droplets” to minimize electrostatic repulsion between neighboring droplets.

hope that could help you a little bit.

Dotmatrix the old type of printer that uses dot to form a letter or an image, usually noisy. The inkjet uses inks that slides tohrough its metal slider, it uses 1 black and 3 color inks to produce text and pictures. Laser the modern printer, that uses laser to produce image and text, this is the fastest among the three.

A dotmatrix printer prints letter by letter where the characters are made of dots . So understandably the quality and the speed of the print is very low.
In Ink jet printers, special ink and heating techniques are used to print the characters .They print a line at a time.
Laser printers use laser light to print the characters and they print a page at a time.So they are the fastest printers so far.

laser printer is fast printing and dotmatrix is work to page in dot to dot write in page and inkjet is use printing page

i don't know the differences between dotmatrix,inkjet,laser printer

dotmetex printer

i don't know