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TOPIC: Taking A Normal Platter And Turning It Into An Endless Loop

Taking A Normal Platter And Turning It Into An Endless Loop 02 Jul 2001 18:51 #20932

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I don't work in the booth, but have been up there a couple of times and tried operating the equipment.

I noticed that when the credits have finished at my theatre, the console/projector automatically stops, the lights raise full and it's all set for the next show. I was just wandering if it would be possible to thread the platter and just take the leader to the end of the feed-out platter. Then you could just come to the console, forward the leader to the first trailer, and when it's showtime, just hit start.

For the professionals, this may sound stupid, but would it work?



Peter Kessleman
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Peter Kessleman
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Re: Taking A Normal Platter And Turning It Into An Endless Loop 03 Jul 2001 09:32 #20933

  • Ken Layton
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There are already endless loop platters and none of them work worth a damn.
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Re: Taking A Normal Platter And Turning It Into An Endless Loop 03 Jul 2001 12:35 #20934

  • John Pytlak
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For an endless loop platter, the inside "circumference" of the film roll needs to be the same as the outside "circumference", with the platter rotating at a constant speed. This requires "scalloping" the film, usually with a moving builder arm. There is ample opportunity for the film to rub against itself in in the loose "roll", causing sticking, dirt and cinch marks. Continuous loop platters are very sensitive to changes in humidity and film curl. A nice concept, when it works, but very hard to implement correctly.

John P. Pytlak, Senior Technical Specialist
EI Worldwide Technical Services
Research Labs, Building 69
Eastman Kodak Company
Rochester, NY 14650-1922
Telephone: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243
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Website: http://www.kodak.com/go/motion
John P. Pytlak, Senior Technical Specialist
Customer Technical Services
Entertainment Imaging
Research Labs, Building 69, Room 7525A
Eastman Kodak Company
Rochester, NY 14650-1922
Telephone: +1 585-477-5325 Fax: +1 585-722-7243
E-Mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Website: http://www.kodak.com/go/motion
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Re: Taking A Normal Platter And Turning It Into An Endless Loop 03 Jul 2001 15:19 #20935

Just think of your favorite 8 track tape getting jammed up and not playing anymore.
Endless loop platter woulbe be the same.
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