EVALUATION OF SPECIAL DRYING TECHNIQUES - MICROWAVE AND VACUUM DRYING

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A001400020009-6
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 28, 2016
• Document Release Date: June 7, 2001
• Sequence Number: 9
• Publication Date: March 22, 1967
• Content Type: MF

. Approved For ReleasMRKNT*78B04747A001400020009-6
NPIC/TDS/D-750-67
22 March 1967
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MEMORANDUM FOR: Deputy Chief, Development Staff, TDS
THROUGH : Chief, Support Systems Branch, DS/TDS
SUBJECT : Evaluation of Special Drying Techniques - Microwave
and Vacuum Drying.
1. On 8 March 1967 a call was :made to Westover AFB. Contact was made
with Discussion included all commercial organizations the
Air Force . a. con ac ed in relation to microwave and vacuum drying.
a. indicated
that of Wright-Patterson AFB would be aware of
wor in microwave drying by this firm and by the
b. This cor-
poration built a 35mm microwave dryer for the movie industry.
They lack interest in continuing a development program for
wider photographic materials.
c.
Microwave Dryer Proposal
indicated that this particular concept held little promise,
informed us that - had performe
some experimen al t es s in drying photographic materials in
microwave wavegui es designed for other purposes. He also
gave us a contact and also indicated
that had conducted vacuum drying experiments.
2. 13 March 1967 was contacted. A
discussion was held on microwave drying an w a p o ograp is applications had
been considered. indicated that preliminary experiments in
microwave drying o i ms a een performed but that this area of work had
been transferred to another department headed b He indicated
that would have knowledge of work performe wit vacuum drying.
DECLASS REVIEW BY NIMA / DoD
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3. On 14 March 1967 was contacted.
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was aware of the previous e:xperimetns performed by
in utilizing
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microwaves for drying photographic films; although work had not
continued in
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this area when the transfer of this responsibility occurred.
was
asked if any work is being performed in vacuum drying. He indicated that
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was involved in a combination of microwave and vacuum drying but not
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in t e p otographic area. knowledge of drying photographic
materials is limited.
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4. On 14 March 196 of Wright-Patterson AFB was
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contacted. and is department are involved in monitoring the
contracts for Westover in microwaves and vacuum drying.
a. An investigation contract in vacuum dr in is being
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conducted for Wright-Patterson AFB by in Calif.
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Vacuum chambers used in food processing are being utilized
in the drying experiments of photographic films. Separate
experiments are being conducted to maintain a vacuum in an
unheated chamber where film is moved in and out of a gate.
b. The best information on microwave drying equipment
or breadboards could be obtained from
in
5. On 14 March 1967
Limited) was contacted explained that they have built a 9 1/2"
microwave film dryer breadboard prototype that utilizes 1800 watts of power
and runs at about four feet per minute. This can be demonstrated at any time.
In there is a dryer for paper prints using microwave techniques
an runs at two feet per minute. Neither the film nor paper dryer have been
exposed to color materials.
6. As the only prototype equipment utilizing microwave techniques,
paralleling our requirements, is in
would be desirable to determine the application of t ese techniques to our
own requirements within NPIC. Travel orders are being prepared for this trip.
7. An attempt was made to contact of Westover AFB.
s on TDY for several weeks. He will be contacted when he returns.
Distribution:
Original F 1 - Addressee
1 - Originator
3 - TDS/DS
Approved For Release 2001/ Fff gq4747AO01400020009-6
 Approved For Release 2001/08/13 : CIA-RDP78BO4747AO01400020009-6
Approved For Release 2001/08/13 : CIA-RDP78BO4747AO01400020009-6