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Microfilm
built 232 days ago
Microfilm and Microfiche have always been an economical alternative for high-volume data and picture storage. Microfilm is the only medium that can survive continual upgrading of electronic technologes. Storage devices generally remain compatible with only one or two generations of media and at some point, new drives cannot read older cartridges.
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Microfilm processing for both 16mm and 35mm film is performed using a deep tank processor and very high standard quality control procedures. The processing lab produces its own film test strips and performs density tests, as well as methylene blue tests for residual thiosulfate. The result is "archival" quality microfilm for Arizona state government.
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Microfilm first saw military use during the Franco-Prussian War of 1870–71. During the Siege of Paris, the only way for the provincial government in Tours to communicate with Paris was by pigeon post, and, as the pigeons could not carry paper dispatches, the Tours government turned to microfilm. Using a microphotography unit evacuated from Paris before the siege, clerks in Tours photograped paper dispatches and compressed them to microfilm, which were carried by homing pigeons into Paris and projected by magic lantern while clerks copied the dispatches onto paper.[10]
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County Records from Microfilm are records scanned from microfilm in the Georgia Archives. The digital collection currently includes Wilkes County marriage records and early tax records. Most of the records are in the possession of the county court which produced the records. Some are in the possession of the Georgia Archives.
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Microfilm is compact, with far smaller storage costs than paper documents. Generally, a year of a periodical in microfilm form takes 10% of the space and 3% of the weight of its paper version. Most microfilm services get a bulk discount on reproduction rights, and have lower reproduction costs than a comparable amount of printed paper. Microfilm is a great archival form. Most library microfilms use polyester with silver-halide dyes in hard gelatin, with an estimated life of 500 years in air-conditioning. In tropical climates with high humidity, fungus eats the gelatin used to hold silver-halide.
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Microfilm and microfiche may be scanned at one of four microfilm scanner stations on the third floor of the UMD Library. Once captured as an image, the information on the microfilm can be saved to a zip disk, e-mailed as an attachment, or printed in the Library. Printing is priced at $.05 per page.
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