Some of the people I work with couldn't comprehend this and would just be walking around with their thumbs up their ass! I tried making a modification to the automation once before and I had to undo it.

I thought that there could be a device with a logic gate in it, or something... It's ON when the presence is on until the motion comes on them it's off when either one drops out. In other words an OR gate until motion, then AND. It'd have an indicator on it that'd tell you which one dropped out.

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Since the 1950's, polyester has been the base of choice for dimensionally critical applications like graphic arts films. The IMAX projection system was designed to take full advantage of its characteristics, and many "special venue" theatres (e.g. Disney World, iWERKS ride films, etc.) prefer polyester for its durability. Many "special venue" prints on Kodak ESTAR base film have lasted tens of thousands of showings.

Compared to previous polyester print films, Kodak's new VISION Color Print Film uses a transparent process-surviving conductive layer to help control static, and a polymeric backing layer to optimize friction and wear characteristics.

The B&W prints that had emulsion-side "flaking" were probably not properly lubricated. Kodak has recommended edge-waxing of 35mm prints since 1922! Kodak's processing recommendations (H-24.02) and SMPTE Recommended Practice RP151 specify edge-waxing for optimum print performance. For the same reason you would wax a floor or fine automobile, edge-waxing reduces abrasion of the film surface by the film-contacting components of the projector.

For more information, read: "Lubrication of 35-mm Release Prints for Extended Projection Life" by Edward Mino and Rodney Perry, published in the October 1983 SMPTE Journal.

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The IMAX projection system was designed to take full advantage of its characteristics, and many "special venue" theatres (e.g. Disney World, iWERKS ride films, etc.) prefer polyester for its durability.

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What has been the experience of the IMAX & other special venues regarding static, compared to mainstream exhibition?

Did they have horrible static teething periods, or, since designed for polyester, did they just do it all by the book (i.e., environmental control, etc.) & have few problems?

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In addition to Gordon McLeod, I'm sure there are some other IMAX projectionists who either participate or "lurk" in Film-Tech Forum. What are your experiences regarding static?

"Fantasia 2000" was the first major IMAX feature printed on the Kodak VISION Color Print Film having the conductive anti-static layer.

The 8 peerf 70 industry has used christie and xetron platters for some time but are all equipped with antistat devices

1.) "... An additional concern is the greater mechanical strength of polyester film, which could make it more likely to damage equipment: this particular concern was suspected to have a psychological basis in that in many cases there were only unfounded rumours of damage."

2.) [About half of the labs surveyed said that;] "... the use of polyster base film will only grow [in the future] because their customers are pushing them to use it."

"Representing the opinion of the majority, who expect the use of polyster to grow [the lab execuitives surveyed said:] "I see more of it being used. Labs have an aversion to polyster, but the customer wants us to use it even if you tell them triacetate is better..." [another] "... I can see people asking for a longer lasting film, and we would be forced to service them..." [another] "...Eventually, it will be all polyster because of longer life and quality."