MONTHLY STATUS REPORT CONTRACT(Sanitized)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A000900010016-5
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 8
• Document Creation Date: December 28, 2016
• Document Release Date: June 18, 2001
• Sequence Number: 16
• Publication Date: July 10, 1964
• Content Type: LETTER

Approved For R
04747AO00900010016-5
July 10, 1964
Ref: 6541PLI-79
Ft. Davis Stat
Washington, D. C. 20020
25X-A
Subje
>hly Status Report
Enclosed herewith you will find five (5) copies of the
second monthly status report under subject contract.
Very truly yours,
CONTROL DIVISION
Contract Administration
and Federal Taxes
Enclosures: As Listed
Declass Review by NIMA / DoD
CONFIDENTIAL
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Second Monthly Letter Report
OPEN GATE STUDY
PERIOD: 28 May - 29 June 1964
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TABLE OF CONTENT'S
I,
Section No.
Page No.
I. PURPOSE OF STUDY. . . . . . . . . . . . 1
II. ACTIVITY OF THIS REPORTING PERIOD . . . 1
A. EXPERIMENTAL PROGRAM. . . . . . . . 1
B. 'T'ECHNIQUE EVALUATION. . . . . . . . 4
III. PLANS FOR NEXT PERIOD . . . . . ... . . 5
LIST OF ILLUSTRATIONS
Figure No. Page No.
1. Experimental Setup. . . 3
2. Effect of Contacting Pressure on
Output Resolution . . . . . . . . . . . 3
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I. PURPOSE OF STUDY
The objective of this study is to determine the feasibility
of a continuous film-to-film contact printer that uses open-
gate techniques and has an output performance compatible with
current state-of-the-art. Known factors contributing to
degradation of image quality. in the system are to be analyzed.
Specific attention will be paid to the problems of assuring
film contact in the printer gate,,as well as possible advantages
of using "liquid gate" techniques in the system. Also techniques
for film cleaning will be evaluated. The study will be summarized
in a test plan, which defines a program to evaluate experimentally
the most promising approaches.
II. ACTIVITY OF THIS REPORTING PERIOD
A. EXPERIMENTAL PROGRAM
Experiments were performed to evaluate the effects of contact-
ing pressure, intermediate liquids, and diffusion in the illumi-
nating system on output resolution.
In order to perform the test, a 45.5X photoreduction of a
USAF 1951 test target, on Eastman SO 105 emulsion,was used. The
visual resolution threshold was 650 lpm with a microdensitometer
contrast (AD) of 0.02, measured with an effective slit width of
0.3 micron.
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This target was then sequentially contact printed nine times
through an Eastman 649-GH intermediate to produce an Eastman
SO-132 9-target-array submaster. Final Visual resolution in the
submaster ranged from 230 to 290 lpm. Microdensitometer cony,
ranged from 0.10 to 0.18 at the limiting resolution.
The submaster was contact printed onto Eastman SO-278 (Type
8430) in the test Getup shown in Fig. 1 under varying conditions
of contact pressure, liquid gate, and source' diffusion. These
conditions are given below.
Presure: 0, 0.33, 2.12 psi.
Liquid Gate: 90% Toluene, 107 "Freon-113" between
submaster and film.
Diffusion: ground glass, optionally inserted.
The experiments were randomly reproduced to minimize system-
atic errors, and output resolution was determined visually by two
readers. The results are summarized in Fig. 2.
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$. TECHNIQUE EVALUATION
We have surveyed conventional techniques broadly using pub-
lished information, manufacturers' literature, patent data, and
direct survey of photographic processors in the field.
We have considered the following techniques for obtaining
contact pressure:
1. Vacuum.
2. Air bearing.
3. Electrostatic attraction.
4. Adhesive and liquid gates.
5. Magneforming.
6. Hydraulic pressure.
7. Centrifugal force.
We have considered the following techniques for dirt
elimination:
1.' Air knife.
2. Vacuum.
3. Ultrasonics.
4. Electrostatics.
5. Solvent wash.
In the liquid-gate study, we are considering the following
problems: `
1. Material compatibility.
2. Methods of application.
3. Methods of removal.
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III. PLANS FOR NEXT PERIOD
We plan to complete our evaluation and prepare a.draft of
the test plan to be submitted on this program.
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