Digitisation of film material
A wide variety of uses for digital copies
Digitising documents allows them to be used in many different ways: Comprehensive research in archive holdings is possible with full optical character recognition (OCR). In addition, digital data can be linked to other media and in this way made available to a wider public; for instance they can be posted on the Internet, displayed as part of presentations or printed. However, maintenance of digital data is very time-consuming and storage devices have only a limited life and quickly become technically obsolete. For this reason, both microfilms and digital copies should be used in document preservation.
Scans of documents, books and microfilms
Digitisation can also be included in mass conservation workflow. After preparation and foliation documents are scanned at a resolution of 300 dpi and 32-bit colour depth. Formats up to A1 as well as books and bound materials with an opening angle of 90 to 140 or 180 degrees can be digitised without damage using the Zeutschel incident-light scanner. GSK also offers the option of digitising microfilms (combinations) for which a roll film scanner is used to scan documents directly from the film. During scanning a check is already made regarding image quality such as size, focus, completeness and correct order; any errors can be corrected straight away. After a final check the scans are stored on a NAS box for practical and secure transport to the customer. An additional backup copy remains with GSK on an external hard disk until safe receipt of the data is confirmed by the customer.
Workflow of digitisation
- Determining treatment criteria
With the help of a questionnaire the criteria for treating the archival materials are established and all steps that need to be carried out determined in accordance with customer requirements.
- Quality check
The Zeutschel Omniscan in action
Incident light scanner: Zeutschel Omniscan OS 12000 A1
Incident light scanner: Zeutschel Omniscan OS 12000 A2
Roll film scanner: Zeutschel OM 1600