Be a Master in C++ in your 11th grade
GET YOUR GRADES HIGHER BY WATCHING OUR SITE !!!
eASY C++
A +
Electromagnetic printers
Dot matrix printing
Dot matrix printing or impact matrix printing is a type of computer printing which uses a print head that moves back and forth, or in an up and down motion, on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like the print mechanism on a typewriter
By using magnetic recording techniques,a magnetic image of what is to be prinyed can be written on the drum surface .Then this surface is passed to magnetic powder which adhers to charged areas.
Laser printing is an electrostatic digital printing process. It very rapidly produces high-quality text and graphics (and moderate-quality photographs) by repeatedly passing a laser beam back & forth over an electron-charged, cylindrical drum, to define a differentially-charged image. The drum then selectively collects electrically-charged, powdered ink (i.e., toner), and transfers the image to the loaded paper, which is then heated in order to permanently fuse the text/imagery.
Some printers direct a high -velocity stream of ink toward the paper . this stream is deflected ,generally by passing through
an electrostatic field such as that used to deflect beams in oscilloscpes.
Laser printer
Inkjet printers
Chapter 4(CONTINUATION)
PRINTERS:::
Since the invention of the printing technology, a variety of technologies have been employed in computer printers. Broadly printers are categorized as impact and non impact printers. Impact printers are the type of printers in which a key strikes the paper to make a letter. The examples of Impact printers are Daisy wheel and Dot matrix printers.