Gapz rule

As we all know printers are used at home and in the work space. They basically just produce paper copies of electronic files.

There are many different makes of printers today, but although they are different makes they all use 2 or three different

techniques in order to make the printed copies we use so much today. Some groups are;

• laser printers: these use a technique called electrophotographic thechnology, this uses a laser which etches an image or word file anto a drum within the cartridge, this then has dry ink rolled into it and rolled onto the pages. A laser printer has 4 cartridges, black, yellow, blue ( AKA cyan) and red (AKA magneta). These colours can be mixed to create a whole range of colours.
• Inkjet printers: this differently uses a technique called electrostatic spray technology,
• Dot matrix printers: these use impact technology

PPM this is a way of knowing how many pages a printer prints a minuite, hence the name PPM meaning Pages Per Minuite;

• A laser printer would print from 8- 200 ppm
• An inkjet on the other hand would print from 2-6 ppm

An important fact is that the price of a printer is based around the capacity and speed of a printer.

A printer produces colour using a method called subtractive mixing. this is when four computer primary colours are used ( Black, magneta, cyan and yellow) to create a wide range of colours.

A cool fact is that picture quality is measured in Dots Per Inch ( DPI) the more dots that can be fitted in a single in the better the quality of an image, thats a technique behind the ever so famous, High Definition, htis would be made up of a large amont of dots put into a single Inch giveing a great resolution.

The TCO ( total cost of ownership) includes;

• Initial purchase price
• Cost supplies such as paper and ink
• Price per page
• Maintenance cost
• warranty costs
• the amount of material to be printed

The factors of reliablility include;

• warranty
• scheduled servicing
• mean time before failures

All these are all taken into account before a pruduct would be put for sale, when these are considered it would help the creator have a slight idea of what would be the ideal price of an object.