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Copy Machine

A copy machine is a piece of indispensable office

equipment in today's business world. While Xerox is the most famous (and the first) company for making copiers, there are several other brands out there that make other kinds of office machines that make copy machines as well. These devices are used to make duplicates of paper documents (text or graphics), as the name implies, by using light induced conductivity of a drum and toner inside the machine.

Even before the Start button is pressed, the drum of the copy machine is already primed with positively charged ions.

The corona wires are what coats the surface of the drum with the positively charged ions.

Hitting Start has a strong light passing along the paper, and the drum rotates, gathering what light the paper reflects.

With a reaction, the particles on the drum only remain where the light didn't hit it.

Toner is dispensed and electrified along with a sheet of paper against the drum, causing the toner to stick to the paper in the shape of pictures and text that have been copied in the positively charged particles.

The fuser binds the toner to the paper and it comes out of the copier as a duplicate of the original piece of paper.

The drum is wiped clean and charged by the corona wires again, ready for the next printing job.

Usually it is important documents that require an office to use a copy machine,

but other things such as reports, memos, and general informative papers are also a good use of this machine. Copy machines also run on toner (usually black), which is cheaper than printer ink, thus saving more money rather than printing out several copies on an ink jet printer.

7/20/2008 7:00:43 PM