This is topic Platter / Film problem in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.
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Posted by Marc Jones (Member # 29) on 06-22-2000, 08:44 PM:
I have a print that once the ring is popped out the buckles toward the center and the film loops up in the center.
The film was treated with film Gaurd 2 weeks ago and We've been running a cleaner for 2 weeks.
The Print is Shanghi Noon.
The film seems like it was loose when the ring is removed.
I had this problem with this same print on a different platter
Any help? Any one else have problems with this film?
Posted by Dustin Mitchell (Member # 372) on 06-22-2000, 09:53 PM:
Sounds a lot like static. But if it was treated with FilmGuard.....?
Posted by John Walsh (Member # 168) on 06-22-2000, 09:53 PM:
What part of the film twists out? During the trailers? If so, I'm guessing that the trailer was wound on a small core (or no core) and the film stock has, "taken a set."Did it always do that, or did it start after a while?
Also, there may be a high humidity problem in your booth. There's a fairly cheap Radio Shack meter the will measure humidity.
Posted by Brad Miller (Member # 2) on 06-23-2000, 03:54 AM:
Is the film roll tightly wound or loosely wound (if you move it with clamps, does it want to fall apart)? How does it bulge inward? Have you inspected the sprockets for slight damage? A slightly overtight pad roller will cause this. Do you have the means to send a photo through email?
Posted by Aaron Mehocic (Member # 15) on 06-23-2000, 11:53 AM:
Marc,Yes, I have had exactly the same troubles as you have had with "Shanghi Noon". When you pull the center ring out, the print immeadiately buckles inward, bouncing off the brain itself. We have yet to have any wrapping occur because of this, but we're all vigilent. Film-Guard tends to help, but does not eliminate the problem all together. I also noticed "Fantasia 2000" doing this on the same platter as well. Our humidity averages about 48%, a reading I consider OK for a projection booth. My personal opinion is, however, "Shanghi Noon" is on crap stock and so is "Fantasia 2000" for that matter.
Buena Vista - you gotta love em 
Aaron
Posted by Brad Miller (Member # 2) on 06-23-2000, 06:00 PM:
Marc and Aaron,Shanghai and Fantasia are on the same stock virtually all release prints are on. What type of platters are you running? There is either way too much takeup tension or the film has been damaged somehow.
Posted by Aaron Mehocic (Member # 15) on 06-24-2000, 09:23 AM:
Brad,The platter that held these prints is a Neumade Neu-Tronic type. "Gone In 60 Seconds" is now playing in this particular house, and we have had no such buckling yet.
Aaron
Posted by Marc Jones (Member # 29) on 06-24-2000, 05:21 PM:
Its a Potts platter, but I had the same problem on a set of platters.
I'll look for damage on the print
Thanks for the help
Posted by Lance C. McFetridge (Member # 95) on 06-24-2000, 05:29 PM:
I had the same problem on a platter a year ago. Turns out Brad hit it on the head. A tight pad roller in the sound head. Actually could see the tiny pricks between the sprocket holes. Made the film loose, and it stuck together slightly. Check for damage.
lance
Posted by John Pytlak (Member # 331) on 06-27-2000, 07:12 AM:
If the relative humidity is between 50 and 60 percent, the film should have minimal curl. Very dry conditions cause the gelatin emulsion to shink more than the stable polyester base, resulting in positive curl. Very damp conditions cause the gelatin emulsion to expand, resulting in negative curl. Too much curl can cause winding difficulties or "spoking".I agree with Brad that some type of film damage may have occured. Excessive tension or "plucking" damage to one edge or set of perfs may cause just enought disruption to the film surface to cause it to wind unevenly.
US prints are printed on Kodak Vision (2383 or 2393) color print film, Fuji, or Agfa print stock. All 35mm Kodak print film has magenta-colored edgeprint that gives complete information regarding film type, emulsion batch, roll number, strip number, date, etc.
------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com