Saturday, July 24, 2010

Printers

Printers
Only processin an image in computer doesn't make a sense. We have to get it printed in a paper to get a hard copy. To print, we need a printer. Printer is an electronic device which forms images, characters, graphs, on a paper. There are various types of printers. Most of the normal character printers use a single black ink to make characters. Similarly, laser printers use same technology used in photocopy machine.
We need higher quality of printers to print images and photos. Inkjet printers are the most commercially used printers. Such printers from Canon, Epson, etc are mostly used worldwide. Commonly in the inkjet printers, six types of inks are used. Namely, Magenta, Photo Magenta, Cyan, Photo Cyan, Black and Yello. We can print using the three colors formats if our JPEG file is in RGB. Similarly, CYMK for Cyan, Yello, Magenta and Black format.
Higher the printing resolution of printer, better the quality of photograph. Mostly, images are printed in 300 dpi of resolution. It means, the printer plots 300 dots per inch. Consequently, if a printer prints higher number of dots per inch, image will be better. Chossing of good photo papers also enhance the performance of printers. After we process any image in a software, it is ready for printing. Now we choose the desired quality and options and send it for priting. Its so simple to get done unlike the traditional way of printing. Printing head is very dedicated and important part in printer. It receives necessary information for printing from computer and aligns the inks to the respective blocks to form images. This is how a printer works.

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