Sunday, 30 June 2019

The Finer Methods for the best Scanning Option


The technology of microfilming a set of microform manufacturing processes on various photographic materials, allows you to obtain photographically reduced copies tens or hundreds of times from manuscripts, drawings, printed texts, etc. one after another on one film. One type of microfilm is microfiche. It usually contains a smaller number of frames located on one photographic plate slide in several rows. For the Microfilm Scanning this is important.

·         Creating microfilms allows access to rare sources and the ability to work with them outside the library or museum, without causing them harm. This technology is widely used in the last quarter of the XX century for compact storage of duplicate library and archival funds and effective access to them. For several decades, an infrastructure has been created in almost all large libraries and archives, on the basis of which microfilm and microfiche technology is being created organizational units (photo labs, microfilming centers); storage funds; rooms equipped with special equipment for viewing, etc.

The main disadvantage of microfilming technology is the need to use special equipment for viewing microfilms. The wide distribution of computer technologies in library and archival affairs has created the problem of choosing a source for creating electronic copies of materials stored in them. Electronic copies of archives and library collections can be created by scanning both original materials and their microfilmed copies. In the case of using microfilms as a source, there are two main ways to enter data into a computer: For the Scanning Companies you can choice.

·         Create enlarged photocopies (make photos of the sheets) and enter them into the computer using conventional scanners;

·         Scan microfilms using professional slide scanners that have the ability to greatly increase, a wide range of optical densities processed and high resolution.

This article discusses some of the issues of technology and the selection of microfilm scanning parameters using professional slide scanners.

Microfiche scanning technology

In 1999, in the prepress processes sector of the Educational and Scientific Center of the State Printing University, experimental work was carried out on scanning 100 microfiches of the Polyansky bibliographic dictionary to create an electronic copy. This work arose due to the fact that at that time there were no printed versions of some volumes of this dictionary. There were no other alternatives for creating their electronic copies, except on the basis of their microfiche duplicate.

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