Reprographic Methods

i) Thermography

ii) Dyeline

jii) Microfiche

iv) Fax

In this unit you have learnt that:

Used for

Methods of reprography are used for the distribution of information. Typewriters are the most commonly used copying machines. They produce written matter on paper in type similar to the printer's type, along with 3 to 4 carbon copies. Standard typewriter, electric typewriter, electronic typewriter and typewriters with special attachments are commonly used.

Duplicating is a process whereby a large number of copies can be obtained from a master copy with the help of a duplicating machine. A duplicating machine is used when the number of copies required is more than the capacity of a typewriter and yet not large enough to justify printing.

Various makes of duplicating machines are available which can produce 200 to 500 legible copies from the same master copy. Some of the important kinds of duplicating machines used are: spirit duplicator, stencil duplicator, offset litho machine.

Thermography is also used for preparing reprographic masters. The choice of method of duplication is made according to the required quality, number of copies and the cost involved.

In present times copying machines are widely popular because they are easy to use, several copies can be obtained within minutes and the original remains intact for further use.

Microfiche can be used for storing large information.

Facsimile or fax is revolutionary for information distribution. The content or illustration on a paper can be transmitted over a telephone line.