printers

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printers
No.	Name	Picture	Description
1	Dot Matrix		A dot matrix printer forms a character by creating a series of dots. Dot matrix printers are commonly used in workplaces where physical impact with the paper is important, such as when the user is printing to carbon-copy/pressure-sensitive forms. These printers can produce sheets of plain text very quickly. They are also used to print very wide sheets, as data processing departments often use when generating large reports with wide columns of information.
2	Laser Printer		Laser printers are more expensive than ink jet printers, their print quality is higher, and most are faster. As their name implies, a laser is at the heart of these printers. A separate CPU and memory are built into the printer to interpret the data that it receives from the computer and to control the laser. The result is a complicated piece of equipment that uses technology similar to that in photocopiers. The quality and speed of laser printers make them ideal for office environments, where several users can easily share the same printer via a LAN.
3	Ink Jet		Ink jet printers create an image directly on the paper by spraying ink through tiny nozzles. The popularity of ink jet printers jumped around 1990 when the speed and quality improved and the price plummeted. Today, good ink jet printers are available for as little as $100. These models typically attain print resolutions of at least 360 dots per inch, comparable to that of most laser printers sold before 1992. These same models can print from two to four pages per minute (only slightly slower than the slowest laser printers).
4	Snapshot		With digital cameras and scanners becoming increasingly popular, users want to be able to print the images they create or scan. While the average color ink jet or laser printer can handle this job satisfactorily, many people are investing in special snapshot printers. These small-format printers use special glossy paper to create medium-resolution prints of 150 to 200 dpi. The best snapshot printers can create images that look nearly as good as a photograph printed using traditional methods.
5	Thermal-Wax		Thermal-wax printers are used primarily for presentation graphics and handouts. They create bold colors and have a low per-page cost for pages with heavy color requirements. The process provides vivid colors because the inks do not bleed into each other or soak the specially coated paper. Thermal-wax printers operate with a ribbon coated with panels of colored wax that melts and adheres to plain paper as colored dots when passed over a focused heat source.
6	IRIS		IRIS printers are used by print shops to produce high-resolution presentation graphics and color proofs that resemble full-color offset printed images. The IRIS is a high-tech form of ink jet printing in which individual sheets of paper are mounted onto a drum. The nozzles on the ink jet printing head pass from one end of the spinning drum to the other, spraying minute drops of colored ink to form the image. This type of printer can produce an image with a resolution of 1800 dpi.
7	Fiery		Fiery Printers One high-quality form of printing takes advantage of digital color copiers.
8	Dye-Sublimation		Desktop publishers and graphic artists get realistic quality and color for photo images using dye-sub (for dye-sublimation) printers. In dye-sublimation technology, a ribbon containing panels of color is moved across a focused heat source capable of subtle temperature variations. The heated dyes evaporate from the ribbon and diffuse on specially coated paper, where they form areas of different colors. The variations in color are related to the intensity of the heat applied. (Many snapshot printers use dye-sublimation technology.) Dye-sub printers create extremely sharp images, but they are slow and costly. The special paper they require can make the per-page cost as high as $3 to $4.
9	Plotter		A roller plotter uses a robotic arm to draw with colored pens on oversized paper. Here, an architectural elevation is being printed. images on paper, but the plotter is typically used to print large-format images, such as construction or engineering drawings created in a CAD system.