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Author
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Topic: Cleaning PTR rollers
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 12-10-2001 02:50 PM
Since I developed the use of PTR film cleaners for Kodak, and presented two technical papers at the SMPTE, I guess I am qualified to answer.  Use a bit of mild clear liquid dishwashing detergent and warm water to clean the PTRs, and RINSE completely. The detergent helps remove any oil residue the PTRs may pick up from the print. Dry completely before use. Loose particulate dirt can be removed by "see-sawing" a piece of adhesive tape on the PTR to pick up the dirt particles. Use a tape with a high quality mild adhesive just sticky enough to remove the dirt, lest you "pluck" pieces of the soft polyurethane from the PTR. In general, wet cleaning with detergent is needed only when the PTRs get oily deposits, perhaps no more than once per day. Normally the tape cleaning method is fine between shows. ------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion
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Jonas Heijkenskjold
Film Handler
Posts: 14
From: Stockholm, Sweden
Registered: Dec 2001
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posted 01-22-2002 06:38 PM
Ben, how do you dry them between shows. You really don´t hav time to let them air dry I suppose. We also have only two rollers per screen, and seldom enough time to let them air dry. After washing them (they´re often too dirty to use only tape) I hit them sideways one by one to my palm, dry the inside and the sides with a paper towel (not the surface), let them air dry for a couple of minutes while I bring down or up the projector (we have four on elevators), clean the projector and film path, change DTS discs and automation program etcetera, then finally I have to wash my hands again, dry them thoroughly and carefully wipe off the last few drops of water with the side of my thumb. I guess that will get some skin oil on the roller, but it is not visible. Last thing I do is to spin them while in place to make shure they are dry.
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.I would think there would be a possibility of some residue being left on the roller. Anyone use anything other than just water?
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