Several types of Printer

Printer is a hardware output device used to deliver a hard copy of a text or image oriented document. Printers are available in color or black & white. Printer resolution has improved greatly over the years as costs have continued to land. Among the printer types available are the daisy wheel, the place that the actual printing mechanism is similar to the IBM electric typewriter with its ball and wheel paper striking device; the dot matrix; the ink jet; the laser printer, designed for high resolution, the high-speed line printer that produces low quality output; the LCD and LED, both high resolution devices and the thermal printer regarding example might be found with older copy or fax equipments. Some printers, such as the line and daisy wheel, are capable of producing text-only report. Hewlett Packard, Cannon, and Epson are probably the many companies manufacturing low-cost, high-speed quality printers capable of numerous functions. A printer produces output in text as well as graphics on a paper. Before getting yourself into details about the types of printers, one must has an idea of the print quality, an important feature of hard copy devices. Typeset Quality: A lot of these prints are mostly being used in magazines or text books in the form of letters and characters fully formed, using solid lines. Near-typeset Quality: this print is similar in quality to that produced by a type-set machine, for example print found in gossip columns. Letter Quality: this print is made using fully formed characters, as opposed to characters made of series of design. Near-letter Quality: it really is printing mode by head passing about the same line multiple cases. Standard Quality: usually produced when characters composed of dots or lines are formed by a certain pass of printed head. Draft Quality: the characters are formed with a minimum number of dots or lines as they are smaller than basic quality characters. Impact Printers These printers produce prints by hammering or pin striking on the ink ribbon, which leaves an impression with the print on the paper. These printers are also divided into; Character-at-a-time Printers The mechanism of there printers are similar to ordinary typewriters. The interest rate of these printers is measured in characters per second (CPS). These printers are; 1. Daisy Wheel Printers These printers are familiar with get the quality of type entirely on typewriters. The daisy printers are exactly what because the print mechanism looks being a daisy. These printers give letter quality print but are slow typically 25-55 characters per then. 2. Dot -Matrix Printers These printers use heads containing nine to twenty four pins. These pins produce patterns of dots on the paper to form the individual characters. The printing cost of which printers is costly than others additionally typically print at speed of 100-600 characters per second. These printers can give draft quality, standard quality and near-letter quality prints. Line-at-a-time Printers These printers possess a special mechanism that prints a whole line at once. These printers can typically print in the range of 400 letters each minute (LPM) to 8000 letters per minute (LPM). They are normally 132 column printers, having 132 printing heads. These printers can be of following types; 1. Drum Printers These printers have an entirely character set engraved about the circumference of each print position of the drum. Variety of print positions across the drum equals the regarding characters from a line on a homepage. One complete round should be used to print a whole line. 2. Chain Printers Chain printers use a sequence of print characters wrapped around two pulleys. Most notably the drum printer, a chain printer has one hammer for each print position. The chain rotates until all for this required print positions relating to the line already been filled. Then, the page moves up to print another line. 3.Band Printers Band printers operate operates way as chain printing equipments. However, they use a steel band instead found in a chain and allows fewer hammers. 'impact equipment. These printers are categorized into the subsequent kinds in accordance to they technology they use. 4. Ink-jet Printers These printers have tiny nozzles that spray charged ink waste. These particles are passed through the field that arranges the charged ink droplets into characters. A lot of it is made available to the paper and dries instantly. These printers produce quality output at the incidence of 300 characters per second. 5. Thermal-Transfer These printers use heat to transfer ink in theory. Thermal printers produce near letter quality prints. They bond ink on top of the paper by heating pins that press against an outstanding wax-inked bow. Thermal wax printers produce color images by melting color wax onto record. These printers are doubly fast as ink-jet printers and are used for animation and graphic arts services. Some thermal printers use special heat sensitive paper, which turned black in the places at which the hot pins strike. Fax machine may be the example of this type of thermal printer. 6. Dye-Diffusion Printers Dye-diffusion printers produce the pictures by heating the ribbon to vaporize the dye and diffusion paper. These types of expensive, and used for photography for quality image. They can produce associated with different color shades. 7. Electrostatic Printer These printers are fast, high-resolution printers, used where complex images are essential to. Such as mapping integrated circuit design, satellite imaging, and remote sensing. These printers are highly expensive. 8. Laser Printers Laser printers are used where finest quality output is just don't forget consideration. These printers produce high-quality text and graphics. In order to produce a print, a laser beam is fond of a mirror that bounces the beam onto a drum, leaving negative charge on the drum. Then, positively charged toner (ink) sticks for the drum. The drum rolls on the paper, a lot of it is transferred to the printer paper. ------ Rashid javed writes articles about computer basics such as concept of connectivity and basics of computer