REWIND OR SPIRAL REEL PROCESSING
KODAK TRI-X AEROGRAPHIC Film 2403 yields optimum results with modern, high-temperature, continuous-processing machines. It can be processed in rewind equipment or on spiral reels, although these methods are not primary processing recommendations. Customers wishing to use spiral reels or rewind equipment such as the Gordon/Morse M-10 Developing Outfit (Military Designator: B-5) may contact Aerial Systems for information on exposure, processing chemicals, process cycles, and general recommendations.
KODAK TRI-X AERECON Film SO-050 is not recommended for processing in conventional rewind equipment due to the physical characteristics of its ESTAR Thin Base.
DIMENSIONAL STABILITY
The dimensional stability of aerial films is of particular interest and importance in accurate mapping and in the reproduction of maps.
Dimensional stability is an all-inclusive term. In photography, it applies to size changes caused by changes in humidity and in temperature, and by processing and aging. The absence of solvent in ESTAR Base is one of the reasons why ESTAR Base films show excellent dimensional stability. The dimensional properties of ESTAR Base may vary slightly in different directions within a sheet; the differences that may exist, however, are not always between the length and width directions.
Temporary Dimensional Changes
Thermal Coefficient of Linear Expansion:
2403 | SO-050 | |
| | |
0.001% | 0.001% | per degree F of change |
| | |
0.0018% | 0.0018% | per degree C of change |
| | |
Humidity Coefficient of Linear Expansion (Unprocessed):
2403 SO-050
0.002% 0.0035% | per 1% change in relative humidity |
Permanent Dimensional Changes
Processing Dimensional Change (Shrinkage to Swell):
| 2403 | | SO-050 |
| | | |
-0.04% to +0.03% | | -0.04% to +0.03% |
| | | | |
| | | |
| | Aging Shrinkage of Processed Film: |
| | | | |
2405 | | SO-050 | | |
| | | |
0.05% | | 0.08% | 1 week at 120° F (49° C), 20% RH |
| | | |
0.03% | | 0.04% | 1 year at 78° F (25.5° C), 60% RH |
| | | | |
