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TOPIC: Masking Tape

Masking Tape 23 Nov 2002 12:21 #21271

  • Large
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Never use masking tape in a projection booth!

Please use Artist Tape which is white in color and the glue is less sticky and leaves less residue on film. You can buy it from Art Supply Stores and it is very expensive or order it in bulk from your cinema supplier.

That said, never use tape to secure the leader to the film while breaking down a print. Please make a one sided splice. It's easier to deal with when building up a print and will not damage more than the one frame.

I caught my assistant manager breaking down a print using artist tape to secure the leader to the print the other day. I gave him firm instructions. I'm so embarrassed that I will not even admit this over on Film-Tech.



[This message has been edited by Large (edited November 23, 2002).]
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Re: Masking Tape 23 Nov 2002 21:21 #21272

  • John Pytlak
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Simple rule: Splices should NOT be visible to the audience, nor cause any disruption to the soundtrack. (This disqualifies opaque tape).

It also goes without saying that the film should be spliced in register, in frame, and with the proper perforations. Some foolishly do not inspect film before projection (or aren't given enough time), and any splices you leave in the print should NOT be likely to cause a film break or projector jam.


[This message has been edited by John Pytlak (edited November 23, 2002).]
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: Masking Tape 23 Nov 2002 21:28 #21273

  • MovieGuy
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But what about the crappy thermal splices mid frame from the labs? Talk about annoying! Lately, we have seen alot of them! Customers have never ever complained about our using yellow splicing tape on reel changes, nor do they ever ask what those BIG circles are in the corner of the film every 20 minutes. Cue marks.... once you tell a person to look for them, they hate you for the rest of their life.

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Re: Masking Tape 23 Nov 2002 22:56 #21274

  • John Pytlak
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If the ultrasonic lab splice is not on the frameline, or is really "ugly" and discolored, it should be removed and remade with a good tape splice. Otherwise, they are generally quite reliable.

Lab splices are unfortunately a "fact of life", or labs would have lots of "short end" waste. (Film manufacturers supply big labs with raw stock in 4000 or 6000 foot rolls. Most reels are not exact fractions of those lengths.)

John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services
Entertainment Imaging
Research Labs, Building 69, Room 7525A
Eastman Kodak Company
Rochester, NY 14650-1922
Telephone: 585-477-5325 Cell: 585-781-4036 Fax: 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
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: Masking Tape 24 Nov 2002 22:37 #21275

  • ttroidl
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I had 3 or 4 nasty Lab Splices in Santa Clause 2, Brand new print, first run, and POP there goes another one! I would have had a hell of a time locating them all and replacing them...

would not be a bother if they had been on the frame line...

tony.
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Re: Masking Tape 25 Nov 2002 10:18 #21276

  • John Pytlak
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One way to find a "lab splice" is to look at the sidewall of each reel by bright reflected light at a grazing angle. The slight roughness differences from the film slitter knives is usually different for each roll of raw stock, and you will see a gloss difference in the film on each side of the splice.

Of course, there's always the good practice of winding the film between your thumb and forefinger to feel for damaged perfs or splices.


The splices are made under darkroom "safelight" conditions, before the images are even printed on the film, and the printer operator has only about 30 seconds to make the splice, so it's difficult to index them to lie on the framelines.

John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services
Entertainment Imaging
Research Labs, Building 69, Room 7525A
Eastman Kodak Company
Rochester, NY 14650-1922
Telephone: 585-477-5325 Cell: 585-781-4036 Fax: 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

[This message has been edited by John Pytlak (edited November 25, 2002).]
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: Masking Tape 25 Nov 2002 17:01 #21277

Because Lab splices are on virgin raw stock before printing there is only a 1 in 4 chance the splice will be on the frame line
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