Microforms are scaled-down reproductions of documents, typically either films or paper, made for the purposes of transmission, storage, reading, and printing. Microform images are commonly reduced to about one twenty-fifth of the original document size.
- 16mm Roll Film
- 35mm Roll Film
- 16mm & 35mm Microfiche
- Master Jacketed Microfilm
- 35mm Aperture Cards
All microform images may be provided as positives or negatives, more often the latter. Three formats are common: microfilm (reels), microfiche (flat sheets), and aperture cards.
|35MM MICROFICHE OR COMBINATION MICROFICHE||PDF/TIFF/JPEG||6.40||3.20||1.60||0.80|
|INDEXING PER 1000 KEYSTROKES||60.00||30.00||15.00||7.50|
|The most common microfilm to be found is the 16mm microfilm. This format holds more than 2,400
images of around A4 in size and more than 10,000 A5 sized images.
The difference between microfiche and microfilm is that they are both negative films but microfiche
are contained in a sleeve of either 16mm, 35mm or a combination of both.
Microfilm are contained in a film reel which can store considerably more images.
Microcards, a format no longer produced, were similar to microfiche, but printed on cardboard rather than photographic film.
SPECIALIST CARD FILM SCANNING
An aperture card is a type of punched card with a cut-out window into which a chip of microfilm is mounted. Such a card is used for archiving or for making multiple inexpensive copies of a document for ease of distribution. The card is typically punched with machine-readable metadata associated with the microfilm image, and printed across the top of the card for visual identification.
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