Reprography, as a term, has gained international recognition in 1963. It includes "photocopying , microcopying, duplicating and in-plant printing and is characterised by the small scale of its operatives". Reprographic techniques include such processes as diffusion transfer, physical transfer, quick stabilisation, diazo, thermography, and electrostatography for copying documents. Reprographic technology has been playing a vital role in the dissemination of recorded information and has now come to stay as one of the means to provide access to document resources geographically located in different places. Document delivery service largely depends on the facilities afforded by reprography.