Types of Microfilm

S7 Digital is able to convert a wide variety of microfilm rolls, cartridges, fiche, and cards. To help you identify the microfilm you have this page includes photographs and descriptions of the various types of microfilm used for document archival.

Roll Film (16mm Microfilm)

Roll film comes in standard widths of 16mm and 35mm and is either 100′ or 215′ in length. It is typically 4 or 5 millimeter-thick and often reels are either open or placed within cartridge or cassette format.

Roll Film (35mm Microfilm)

Roll film comes in standard widths of 16mm and 35mm and is either 100′ or 215′ in length. It is typically 4 or 5 millimeter-thick and often reels are either open or placed within cartridge or cassette format.

ANSI Cartridge

ANSI cartridges are essentially 16mm roll film in a square, hard plastic case (a cartridge). Other than their cartridge format, ANSI cartridges are identical to normal 16mm roll film in terms of what types of images they’re typically used to store.

Jacket Microfiche

Sleeves that hold strips of 16mm or 35mm roll film, or a combination of both, stored in a clear Mylar jacket. Jackets are typically 4 inches x 6 inches and can hold up to five strips of film, typically in a horizontal orientation. A title strip area across the top of the jacket will usually have the microfiche’s title and indicate its contents.

COM Fiche (Computer Output Microfilm)

105 mm x 148 mm sheets which have individual frames arranged in a permanent grid pattern and are generated by computer processes, hence the name. Each sheet will have an area at its top with an eye readable title describing its contents. COM fiche is usually of a higher reduction ratio (typically 42x reduction in size of what it would look like in hard copy). A single sheet of this fiche can hold up to 300 frames.

Aperture Card

Aperture Cards are similar to the very old IBM-punch cards but have a hole (aperture) into which a single 35mm microfilm frame has been mounted. Aperture cards have traditionally been used in engineering applications.

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