There are basically two methods of copying:

Photocopying

This is a modified development of photography. It is quite expensive and slow and is not often used for routine reprographic work these days.

Electrostatic copying

This method is often incorrectly called photocopying.

The electrostatic copying machine or xerography helps in getting exact copies of the original at a very fast speed. This eliminates the need for preparing a master copy.

Equipment Required

Copier

Usually copiers are available on lease. Outright purchase is possible, but may not be cost effective. For the lease the following should be inquired and checked.

i) The period of lease

ii) Conditions to which the lease can be terminated and a new copier used

iii) The method of charging for copies

iv) Charges for ancillary items, e.g. document handler, paper feed trays, sorter, standing cabinet, etc.

v) Maintenance.

Materials

Toner: may be supplied under a lease agreement

Paper: plain copying paper costs Rs. 100 for 500 A4 sheets

Economic Run

This depends on leasing arrangements. Generally there is a flat rate cost for every copy made up of:

Machine cost + Paper cost + Toner + Maintenance

Master Preparation

There is no master to be prepared. The original may be in virtually any form, but certain colours, e.g. light blue, light yellow, etc. will not reproduce.

Copy Quality

Good - excellent

Colour

Usually one colour, multicoloured copiers are also available but they are very expensive.

Use

Almost any reprographic use.

Xerox machines are relatively expensive to run and to maintain (maintenance contracts allow serving from time to time). Because they are easy to use, normally everyone is allowed to use them. As a result they can suffer inexpert handling. You may find that some sort of control is required.