[tig] ionizer info sought

john.pytlak at kodak.com john.pytlak
Wed Dec 1 14:49:29 GMT 2004

Buildup of static charge is often an issue in very dry environments, or 
during the winter heating season.

Ionized air containing both negative and positive ions helps reduce static 
charge on non-conductive surfaces like processed negative film.  Likewise, 
maintaining moderate humidity increases the moisture content of film, 
helping reduce static charging and dirt attraction.

There are many commercial anti-static devices that use ionized air to help 
reduce static charge on moving plastic webs like film.  Although 
radioactive materials like Polonium or Americium have been used to provide 
localized ionization in the past (e.g., "StaticMaster" Brushes), corona 
discharge devices using low current, high voltage AC corona are most 
commonly used today.

Here are some links about static control and the use of ionization:






Generally, you want an industrial ionizer specifically designed for static 
control, that provides both positive and negative ions.  Household units 
often have an unbalanced ion output, and are not effective.  Avoid units 
that produce noticeable ozone.

In film handling areas, static control measures also include maintaining a 
recommended relative humidity of 50 to 60 percent in film handling areas. 
Non-conductive surfaces like plastic work surfaces, carpeting, equipment 
covers, etc. may be treated with a conductive topical anti-static solution 
like Staticide, Neutrostat, etc., which usually contain a quaternary 
ammonium salt that increases surface conductivity in the presence of 
normal humidity.  These measures will help reduce annoying shocks from 
static buildup as you walk across carpeting, and reduce the risk of 
"zapping" sensitive electronic components.  (You should always used a 
conductive wristband connected to ground and other anti-static measures 
when handling circuit boards).


Hope this helps.

(signed by:)
John P. Pytlak
Senior Technical Specialist
Customer Technical Services
Entertainment Imaging
Research Labs, Building 69, Room 7525A
Eastman Kodak Company
Rochester, New York 14650-1922  USA
Telephone: +1 585 477 5325
Cell: +1 585 781 4036
Fax: +1 585 722 7243
e-mail: john.pytlak at kodak.com
website: http://www.kodak.com/go/motion

Rob Lingelbach <rob at calarts.edu>
Sent by: tig-admin at tig.colorist.org
12/01/2004 07:34 AM

        To:     Telecine Internet Group <tig at colorist.org>
        Subject:        [tig] ionizer info sought

thanks to Cintel Inc. for support of the TIG.
I have a few questions about ionization for tk suites.

does the use of an ionizer in the equipment (tk deck) room make a
difference appreciable enough to warrant its purchase and use, and if
so, which brand or model (are ceiling mounted options best)?

some air conditioning system claim to ionize via filtration.  is this
effective or is it basically passive and much less effective than the 
needle-point type (which i would call "active").

any general thoughts about having a room ionizer for the client area?

thanks in advance.

Rob Lingelbach 
tig founder, coadmin

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