Movies - Intermittent mechanism

Home > Listing Index > Movies > Intermittent mechanism

	Movies - Intermittent mechanism

The intermittent mechanism (or "movement") is the device by which film is regularly advanced and then held in place for a brief duration of time in a movie camera or movie projector. This is in contrast to a continuous mechanism, whereby the film is constantly in motion and the image is held steady by optical or electronic scanning methods.

The intermittent mechanism must be employed in concert with a rotating shutter which blocks light tranmittance during the motion of the film and allows light through while the film is held in place usually by one or more registration pins. The intermittent mechanism can be accomplished in many ways, but most often, it is done with sprocket wheels, claws, or pins coupled to the camera or projector drive mechanism.

In movie theater projectors, the intermittent movement is most often produced by a Maltese Cross mechanism:

[ Visit the complete Wikipedia entry for Intermittent mechanism ]

This page is based on the copyrighted Wikipedia article Intermittent mechanism; it is used under the GNU Free Documentation License. You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.

Searches on eBay