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  1. #51
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    Part of this is due to the antistatic properties of rem-jet. At high speeds during printing or filming, static electricity can discharge and fog film. Rem-jet is conductive and dissipates any charge. B&W films are now coated on a conductive stock that contains a small amount of conductive material.

    In addition, rem-jet is very neutral, a must for color film.

    Those are my takes on this.

    PE

  2. #52
    AgX
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    The electrostatic "load" should be the same for colour and b&w films.
    And when REM-Jet was introduced there was no other good antistatic agent to be employed, to my knowledge.

    So this whole REM-Jet thing is still enigmatic to me. (Remember some time ago there was a thread discussing the origin of that name? We could only guess then.)

  3. #53
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    In the early days of coating, B&W film made one pass through the coating machine, but color films made up to 7 passes. The statistical chance of increasing the static discharge problems was probably large. IDK. Color was also coated at higher speed due to the number of passes. And, as I said, rem-jet is very neutral in color, thus being ideal for color.

    It may be that some early B&W films had a rem-jet back. Again IDK. I have no idea of the history of this backing. I would have to talk to a process historian at GEH.

    PE

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