hotocopying is a process when printed or written materialis copies

directly using photographic means. we usually find that photocopying is

handy when just a handful of copies of an original are needed When

larger amounts are required, more economical printing process are

required. Although, when you use a printing process, the original

master or even a stencil can occasionally be made.

A modern day photocopier or copier as its sometimes known is a device

that produces paper copies or original documents or other documents

such as stencils, plans, drawings etc. These reproductions can be

produced extremely quickly and cheaply. Most of the current models of

photocopiers use xerography technology, which is a dryphotocopying

method produced by a guy called Chester Carlson in the late 1930's, he

was given an award for this in October 1942. Mr Carlson called his

original invention electrophotography, which is a dry process which

uses heat, there are other techniques used like ink jet methods, ink

jet printers work in a different way they propelle different sized

drops on molten or liquid material onto any different size page. Ink

Jet printers are the most commonly used out of all printers available

for computer type printing and general use due to their low running

costs and the excellent standard of print and colour and ease of use,

for for office use, Xerography is still the standard printer for

copying.

Xerox introduced office photocopying, it is a huge document management

corporation, which produces and sells a huge number of black and white

and colour pribnter, photocopiers, printing presses, multi-function

units, they also offer consultation servies and supplies for all their

machines.

Photocopying machines are used in many areas such as business, schools,

colleges, eduction and government bodies, it is sure that eventually

the photocopier will become a thing of the past as digital distribution

of documential becomes evermore popular. Pieces of paper being passed

around, is a waste of natural resources.

The Fax Machine

The fax machine or facsimile machine as it should be calledis a mchines

that is used to transmit document using the phone line. The Fax machine

comes under the huge bubble which is now "digital technology". The fax

machine will digitize and image and change it to electrical impulses,

that can then be transmitted over our phone lines. The fascimile

machine on the receiving end can then convert the impulses back to the

dots, therefore replicating the original image - clever eh!!

A Fascimile machine is made up of various parts including an optical

scanner which digitises the images onto the paper, a printer part which

will be used for printing the incoming fascimile messages and also

required is a telephone line for connection.