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Author Topic: I have diagonal emulsion scratches on my Riddick print Richard Greco Phenomenal Film Handler Posts: 1180 From: Plant City, FL Registered: Nov 2003 posted 06-25-2004 09:57 PM                     How does this happen? I know I threaded it right. I wasn't working when it happened. It is sporadic on the right side towards the center.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 06-25-2004 11:24 PM                     324 posts and you still haven't learned the basics of posting help topics??? What kind of projectors? What kind of platters? Do you run soundtrack up or down? Describe the scratches in painful detail too.  |  IP: Logged Peter Mork Expert Film Handler Posts: 181 From: Newton, MA, USA Registered: Jun 2002 posted 06-25-2004 11:58 PM                     Not easy to diagnose fron here. One thing to do is examine the scratches and see if they repeat in a pattern. For instance, if a long scratch repeats every six inches, then a roller of that circumference is the likely culprit.  |  IP: Logged Paul G. Thompson The Weenie Man Posts: 4718 From: Mount Vernon WA USA Registered: Nov 2000 posted 06-26-2004 12:18 AM                     Brenkert....Intermittent sprocket film stripper is not adjusted correctly and probably bent. Ballentyne PRO-35....That lay-on roller before the holdback sprocket is probably of the old style. Normally, they give horizontal scratches. Simplex in general: Intermittent film sprocket stripper loose and ready to fall off. Century: Same thing. Platters: Badly warped dish. If I got this correct by thinking the sound track is wound down on the platter instead of up, the warled platter could give emulsion scratches. Just a few ideas.... You said quote: Richard Greco It is sporadic on the right side towards the center Right side on the screen? That would be side opposite the sound track. Could be the angle roller on the platter (CFS, POTTS, Strong) More than likely, the film is beating in the projector or partially derailing in the pay-out head, probably the film stripper. Could be a roller going "Wooga Wooga," too. If it is just slightly off center, I would guess a sprung or loose film stripper rather than the platter. If it is a pro-35, replace that lay-on roller between the int sprocket and the holdback, or just take them off and throw them in your bone box.  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 06-26-2004 05:54 AM                        In addition to Brad's questions, a photo of the affected frames also helps diagnose the cause of any scratches or abrasion marks. The exact repeat pattern can identify a particular roller or component. Diagonal scratches are almost always platter scratches, or from film riding up on a roller.  |  IP: Logged Fabrice Dubourg Film Handler Posts: 43 From: Granville, France Registered: Feb 2003 posted 06-26-2004 06:58 AM                     Platter, I suppose when make-up table output roller is not at the same level as the platter used to mount the film  |  IP: Logged Richard Greco Phenomenal Film Handler Posts: 1180 From: Plant City, FL Registered: Nov 2003 posted 06-26-2004 08:11 AM                     OK Sorry Platters are Speco LP-270 Projectors are Century SA Soundheads are Century It didn't happen during buildup because it was fine during the screening. I think it was the other projectionist last week.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 06-26-2004 09:31 AM                     I guess the key is how far apart are the bursts of scratchs and then how far apart are the individual scratchs If they are in the centre area I would bet it is a roller that has intermitently stopped turning and that the film was incorrectly threaded over it so that it gouged every so often One should be able to ind emulsion residue where the problem occured  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 06-26-2004 02:22 PM                     quote: Brad Miller What kind of projectors? What kind of platters? Do you run soundtrack up or down? Describe the scratches in painful detail too. Well Richard, you answered HALF of the questions. You sure you want answers?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 06-26-2004 04:25 PM                     Maybe we should ask that doorperson  |  IP: Logged Richard Greco Phenomenal Film Handler Posts: 1180 From: Plant City, FL Registered: Nov 2003 posted 06-26-2004 11:33 PM                     ok, the other two answers are... Soundtrack is up. The scratches are green and just to the right of the center on screen. They are diagonal. They sort of strobe past like they arent on every frame. They range from top to botton screen. I don't think the average customer would notice it but I did. And Gordon, I know you are being sarcastic, but that doorperson is in a wheelchair.  |  IP: Logged Thomas Procyk Phenomenal Film Handler Posts: 1842 From: Royal Palm Beach, FL, USA Registered: Feb 2002 posted 06-26-2004 11:52 PM                     Okay, this thread is getting dumb. First off, Mr. Miller asked THREE questions, and made one demand. Mr. Greco answered two of the three, thereby answering TWO THIRDS not HALF of the questions. Second, just because someone is in a wheelchair doesn't mean you can't ask them questions. And sarcasm has nothing to do with their handicap. Anymore fisticuffs like this, and I am closing this thread. =TMP=  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 06-27-2004 12:08 AM                    Check your rollers for misalighnment. Make sure the picture area is not rubbing across the deck of the platter. Make sure the film is not running up on the flangs of the rollers causing the surface of the picture area to rub against the keeper rollers. Make sure when the film makes it's return path to the takeup platter, the sound track needs to be close to the roller tree when it coms off the final return roller. So that the film doesn't bounce as it is winding around the ring.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 06-27-2004 01:15 AM                     quote: Richard Greco They are diagonal. They sort of strobe past like they arent on every frame. They range from top to botton screen. Which direction are they diagonal? And what do you mean by "strobe past" and "range from top to bottom screen"?  |  IP: Logged Paul G. Thompson The Weenie Man Posts: 4718 From: Mount Vernon WA USA Registered: Nov 2000 posted 06-27-2004 01:41 AM                     Has the problem gotten worse, or was it a one-time deal? If it was a one-time deal, you'll probably never find the problem. More than likely, it was a derailment on a roller or a cocked roller. Make up a reel of "clean previews," run it through a couple of times and see if the scratches are there. If not, it was a threading error when the orginal damage occurred. I see this as a common problem in a poorly lit booth. A poorly lit booth is a disaster waiting for a place to happen.  |  IP: Logged

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