Selasa, 06 November 2012

salah satu jenis printer

Dot Matrix Printer

This type of printer Dot Metrics is a method of printing using a printer ribbon. Prints are produced to look like the points each mengubungkan one another, so that the print is less refined and less good. historically this type of printer Dot Matrix 9 Pin initially using the mean in one letter will be printed with a combination of 9 points, then growing to 24 pin, and of course, so the print will be much smoother. type dot metrix printer manufacturers are quite famous is Epson, the Epson LX products - 300, espson LX 800 and others.

            Dot Matrix Printer How It Works

Dot matrix printer is the first known in 1964, in 1970, most of the dot matrix printer industry is owned by Digital and Centronics, and Centronics prefer the low-end compared to Digital. LA30, LA36, and Centronics dot matrix printer 101 is in the early development of the dot matrix printer. 1970-1990 in dot matrix printers are the most reliable printers in terms of yield and price. In 1990 emerging dot matrix printer that supports connection to a computer using a USB port.
Dot-Matrix printers are printers that print is still very low resolution. In addition, when is printing, the printer of this type tend to be loud and sound quality is not good for printing images because the image is printed will look like dots interconnected.
Head of printer types, including 7 or 9 or 24 needles are arranged vertically and form a column. At work, there is a needle that will shape the character images through friction and needle on carbon paper. The printer is also a character type printer. Its speed varies, but for the Epson LX-80, is 80 caharacter per second.
At the head-printer, moving from left to right, touching the paper, the letters that have been plotted in an arrangement of needles will soon appear. Pattern letter is then received by a ribbon of carbon paper behind there, and there was a printing letter by letter.
Each character is formed will lead to a unique pattern that consists of various points within the dimensions of a matrix. Type of dot-matrix printers vary greatly, there is a type color and some are non-color. Generally, the printer type dot-matrix also has only one color, which is black. For color printers, used tape (carbon / Ribon) have 4 special colors, such as black, blue, red and yellow.
These printers are still widely used because it is the famous 'naughty' (durable). Another plus, dot-matrix printer ribbon is much cheaper than the toner (ink) for inkjet and laserjet printer types.
1. Turn off the printer, remove the lid and tape.
2. Remove dust or other debris on the printer.
3. Check and clean the streets and out of the paper and the platen.
4. Clean and replace the 'head' print.
5. Replace the tape if it is depleted.
6. Test printing to get the print quality is satisfactory.
7. Clean and return the printer cover.
8. Do check and make sure the paper is installed correctly and conditions go smoothly.

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