Printers By Adam Greenhalgh
A printer will produce a paper copy of a electronic file.
There are two main printers these are laser printers and Inkjet printers there is also another type of printer but you raiely see them this is called the dot matrix printer. The prices of printers will be based on the capacity and the speed the speed of the inkjet printer is 2-6 ppm , ppm means pages per minute but the laser printer will print at around 8-200 ppm which is very fast and if you have a very good laser printer it will printer at around three pages per second which is amazingly fast.
The way a printer produces colour is through subtractive mixing. A laser printer only comes with certain but it will create other colour by mxing two or three. The colours it comes with are red, blue , yellow and black. If you wanted to measure the quality of the printer it is measured in dots per inch also know as dpi. When you see a colour of green with your eye it really it will be a mix between yellow and blue not green this is why it is called subreactive mixing.
The reliability of the printer will be based on the warrenty, schelued servercing and mean time between failures (mtbf) you will only be able to use warrenty if the company who made the printer makes it with a fault so for example if you plug your printer into a laptop and it blows up they will give you a new printer because it was not your fault but if you get a hammer and break it you will not get a new printer because it was your fault it broke.
The way you connect your printer to a computer or a laptop would be one of these way you could use USB which is a very common one you could use parallel but this would only transfer one peice of infomation at a time serial would also do this or the other commom way would be wireless but you would have to have a good printer to do this.