my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Mystery Scratches (Page 2)

This topic comprises 2 pages: 1  2

Author Topic: Mystery Scratches Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 01-10-2009 05:18 PM                     Based on the pics and simulated scratches you showed, my money's on the inner flange of the pad rollers causing it, looks like the type and area for it. Contact your dealer and get the pad roller without the inner flanges from Lavezzi (I think they're still only about $8-10 each) and replace them. Or, if you know a machinist, have him chuck the rollers into a lathe and turn (cut) that inner flange out. Another thing to look very closely at is the film gate runners and trap bands. The tiniest nick in those will cause the scratches too. (Usually with a LOT of film dust buildup too.)  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 01-10-2009 07:17 PM                     Your tech is absolutely 100% dead wrong. Feel free to point whoever that is to this thread if you really want to make him/her happy. I have no sympathy for people who cause film damage by spreading their own ignorance to others. And even light dirt buildup is damage because that quickly becomes embedded into the emulsion and a permanent part of the film. BTW the pad rollers Tony spoke of above are what I am currently pointing my finger at with the existing info that has been provided so far.  |  IP: Logged Jeremiah Teague Film Handler Posts: 17 From: Fort Collins, CO Registered: Dec 2008 posted 01-11-2009 04:32 AM                     I took some more pictures. Primarily the pad rollers to show you guys and also how I threaded tonight (and from now on). scrathces at picassa Let me know if you think it's the pad rollers. I'm going to check all the gates and bands on tuesday, most likely.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 01-11-2009 04:59 AM                     Nope, you have the good pad rollers. Its something else. You also have the slap guards under the ultramittent, so making your lower loop too large will destroy the SRD soundtrack. Since the cleanliness of your projectors shows that you do not run FilmGuard on your prints, you have probably noticed that the Dolby digital error rate keeps climbing higher and higher every week. That's why! (The slapguards sacrifice the SRD soundtrack to protect the image from being scratched from people who make that loop too big.) I would look to the intermittent shoe at this point. (Its not happening in the gate/trap.) Do a test by reversing the intermittent shoe (rotate it 180 degrees) and then run a trailer loop of something bright and animated for 50 passes to see if it re-appears. Please note that you really MUST use the "upload" feature here on this website. By linking to your picasa site, those pictures will not be archived for the future. The upload page (look to the left side of your screen) is very self-explanatory.  |  IP: Logged Jeremiah Teague Film Handler Posts: 17 From: Fort Collins, CO Registered: Dec 2008 posted 01-11-2009 03:55 PM                     The soundtracks do get bad week after week. I haven't had any prints loose the digital track completely, though. I'd like to use FilmGuard, but I work for that company that won't let me buy it. I'll try reversing the shoe. What exactly will that show, though? If it scratches the other side of the film, then it's the shoe sort of thing? Sorry about not uploading the pics. I'll do this next time.  |  IP: Logged

All times are Central (GMT -6:00)

This topic comprises 2 pages: 1  2

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.