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Film Cassette

IP.com Disclosure Number: IPCOM000090086D
Original Publication Date: 1969-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Vetrone, JV: AUTHOR

Abstract

The cassette is for supplying film to a photoprinting machine. The cassette provides a film leader out of the cassette and maintains its light-tight integrity until the cassette is mounted in the machine. There is axial slidability of the spool, so that it can be aligned by the machine once the cassette is mounted in it.

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Film Cassette

The cassette is for supplying film to a photoprinting machine. The cassette provides a film leader out of the cassette and maintains its light-tight integrity until the cassette is mounted in the machine. There is axial slidability of the spool, so that it can be aligned by the machine once the cassette is mounted in it.

With regard to light-tight integrity, the cassette contains cover 10 which overlaps lip 12 on body 14 when such cover is closed. Leading edge 16 of film 18 can pass through a crack between cover 10 and lip 12 without degrading the light-tight integrity. When the cassette is mounted in the machine, a handle, not shown, at the left end of the cassette is rotated. Cover 10 slides around in the cassette, opening it up. Film 18 can then move freely from the cassette when it is in the machine.

The spool, having core 20 and flanges 22, is slidably mounted in the cassette. Spring 24 normally biases the spool to the right so that it abuts against end plate 26. When the cassette is positioned in the machine, fixed pin 29 in the machine pushes against hex shaft 28, moving the spool to the left against spring pressure. This pushing aligns the spool with the film-feeding apparatus in the machine. Face gear 30 is slidably mounted on shaft 28. Gear 30 engages a gear in the machine which controls tensioning of the film.

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