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Microfilm Reader is a device used for reading of documents stored as microform. Microform includes Flat Film, Microfilm, Aperture Cards, Microfiche, and ultra fiche. Using open reels or cassettes, Microfilm is often used as a way to store many documents in a small space. It has become increasingly important in the development of films as well as storage of archived newspapers. With the advent of Microfilm, naturally would follow the development of Microfilm readers. A microfilm reader is used in projecting and viewing to magnify microfilm images to readable proportions. With the advent of the modern computer the use of microform has decreased although many library archives still remain in microform. ==Characteristics of a Microfilm Reader== A modern Microfilm reader consists of〔Reference 6〕 *A lens that is capable of magnifying the image on the film to at least the size of the original document * An easily replaceable light source that provides illumination without damaging the microfilm. *Minimization of light effects of the room *A screen large enough to project the entire film image *An easily used loader for film rolls. *Provisions to rotate the image on the screen *Readily accessible controls *Minimization of the possibility of scratching or abrading the film *Means of preparing enlargement easily 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Microfilm reader」の詳細全文を読む スポンサード リンク
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