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#DOT MATRIX PRINTER RIP PAPER SERIES#

After the pin fires, the electromagnet is de-energized which makes the spring pull the print pin back. Continuous 2-, 3-, and 4-part computer paper is designed for dot matrix printers, where the paper is pin-fed through the printer.To fire the print pins against the ribbon and paper this electromagnet is energized due to which the moving pin strikes the ribbon that is coated with ink.The printer head contains 9, 18 or 24 pins aligned vertically such that one end of each pin is connected to individual electromagnet.The printer processor takes the dot pattern information from bitmap table and send the signals to the printer head.The bitmap table contained in the printer’s ROM chip tells the printer the pattern of dots it should use to produce the required character shape represented by the ASCII code.The ASCII codes received by the printer are first stored in the RAM buffer.

#DOT MATRIX PRINTER RIP PAPER SERIES#

First the computer sends a series of ASCII codes to the printer.

Monochrome printer prints only one color (black) and color dot matrix printer is made to print a maximum of 4 colors – Red, Green, Blue and Black.

According to print color, there is monochrome printer and color printer.

In these two types of printers, the print head moves 80 columns and 132 columns respectively.

Based on the movement of print head, there is 80 column printers and 132 column printers.

According to number of pins or dots used per letter, there are mainly 3 types of printers – 9 pin, 18 pin and 24 pin.

A unidirectional printer prints only in one direction i.e., from left to right whereas, a bi-directional printer prints in both the directions – from left to right & right to left. The more pins the dot matrix printer has the higher the resolution and. Combinations of these small dots make up the letters or simple graphics.

Based on printing directions, Dot matrix printers are classified into two types namely, unidirectional and bidirectional printers. A dot matrix printer has an electronic print head (a carriage) which holds the pins and whizzes back and forth hammering the pins against the ribbon and striking small dots of ink on to the paper.