[tig] ionizer info sought
john.pytlak at kodak.com
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.
John P. Pytlak
Senior Technical Specialist
Customer Technical Services
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
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.
tig founder, coadmin
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