Question

difference between drum printer and Dot Matrix printer

Answer 1

Dot matrix printers are capable of printing roughly 200 to over a thousand characters for every second whereas today’s laser printers can print anywhere from a few pages a minute to hundreds of pages a minute for large commercial office applications.

There’s no doubt that dot matrix printers are less expensive to maintain in terms of supplies. The per page cost can be anywhere from .1 to .15 cents a page. Laser printers come in at 1-9 cents a page and inkjets can run you 3-30 cents a page.

Answer 2

drum printer-(1) A wide-format inkjet printer. The paper is taped onto a drum for precise alignment to the nozzles.

(2) An old line printer technology that used formed character images around a cylindrical drum as its printing mechanism. When the desired character for the selected position rotated around to the hammer line, the hammer hit the paper from behind and pushed it into the ribbon and onto the character.

dot matrix-Dot matrix printing,[1] sometimes called impact matrix printing, is the process of computer printing from a collection of dot matrix data to a device, which can be one of:

Impact dot matrix printers

non-impact dot matrix printers, such as inkjet, thermal, or laser printers.

Impact dot matrix printing 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. However, unlike a typewriter or daisy wheel printer, letters are drawn out of a dot matrix, and thus, varied fonts and arbitrary graphics can be produced.

These printers can print on multi-part (carbon or carbonless paper) forms[2] since they print using mechanical pressure.

The alternative to dot matrix printing is sometimes known as a letter-quality printer or a line printer which use fully formed type elements that impact a sheet of paper.

The perceived quality of dot matrix printers depends on the vertical and horizontal resolution and the ability of the printer to overlap adjacent dots. For impact dot matrix printers 9 pin and 24 pin were common, this specified the number of pins in a specific vertically aligned space. For 24 pin where the horizontal movement could slightly overlap dots a "near letter quality" (NLQ) was often specified, this produced visually superior output, usually at the cost of speed