Kodak AS-75 manual Image Structure, Storage, Processing

IMAGE STRUCTURE

The following data are based on processing in KODAK VERSAMAT Film Processors, Model 11, using KODAK VERSAMAT Chemicals at the conditions noted.

	Resolving Power
Developer	(line pairs/mm)		rms Granularity*
	TOC 1.6:1	TOC 1000:1
885	50	125	26
641	40	125	26
Type A	38	94	42

*Granularity values read at a net diffuse density of 1.0 with a 48-micrometre aperture.

Process conditions to achieve above values:

885Chemicals:15 fpm, 85°F (29.5°C), process gamma 1.10

641Chemicals: 5 fpm, 85°F (29.5°C), process gamma 1.30 Type A Chemicals: 10 fpm, 90°F (32°C), process gamma

1.65

STORAGE

For consistent results, all aerial films should be stored under fairly constant conditions. Kodak aerial films are “usually” packaged in equilibrium with 40 to 50 percent relative humidity. High temperatures or high humidity may produce undesirable changes in the film.

Unexposed Film

Store unexposed film in a refrigerator at 55°F (13°C) or lower, or freezer at 0 to -10°F (-18 to -23°C), in the original sealed container. If the film is stored in a refrigerator, remove it about 2 hours before opening; if stored in a freezer, remove it about 8 hours before opening. A sufficient warm-up time is necessary to prevent moisture condensation on cold film -- otherwise, moisture spotting, ferrotyping, or sticking may occur.

Exposed Film

Keep exposed film cool and dry. Process the film as soon as possible after exposure to avoid undesirable changes in the latent image. If it is necessary to hold exposed but unprocessed film for several days (such as over a weekend), it should be resealed and refrigerated at 40°F (4°C) or lower. Before unsealing and processing exposed film that has been held in cold storage, follow the warm-up procedures described for unexposed film described above.

Processed Film

For best keeping, store processed film in a dark, dust-free area at 50 to 70°F (10 to 21°C) and 30 to 50 percent relative humidity. Preferably, store negatives on the spool or in individual KODAK PROFESSIONAL Sleeves. High relative humidity promotes the growth of mold and causes ferrotyping. Very low relative humidity causes excessive curl and brittleness. Avoid storage temperatures over 80°F (27°C).

PROCESSING

KODAK DOUBLE-X AEROGRAPHIC Film 2305 can be processed in KODAK VERSAMAT Film Processor, Models 11 and 1140, with KODAK VERSAMAT 885 Chemicals, KODAK VERSAMAT 641 Chemicals, or KODAK VERSAMAT Chemicals, Type A.

Mechanized processing in roller-transport processors offers the advantages of uniform treatment of all portions of the roll, freedom from banding, and absence of significant density variations from ends of the roll to the center. Refer to the operator’s manual for the processor set-up information, but in all cases, the fixer replenisher should be introduced into tank No. 5 of the processor with a countercurrent flow to tank No. 3, where it overflows to a collection or recovery system.

General instructions for setting the machine dryer temperature are included in these pages. However, the temperature of the dryer may require some further adjustment, depending upon the ambient temperature conditions in the processing area. Usually it is best to set the temperature approximately 3°F (2°C) above that required to dry unexposed, processed film.

Chemicals

The following KODAK VERSAMAT Chemicals may be used in both the Model 11 and Model 1140 VERSAMAT Processors.

KODAK VERSAMAT 885 Developer Starter

KODAK VERSAMAT 885 Developer Replenisher

KODAK VERSAMAT 885 Fixer and Replenisher

KODAK VERSAMAT 641 Developer Starter

KODAK VERSAMAT 641 Developer Replenisher

KODAK VERSAMAT 641 Fixer and Replenisher

KODAK VERSAMAT Developer Starter, Type A

KODAK VERSAMAT Developer Replenisher, Type A

KODAK VERSAMAT Fixer and Replenisher, Type A

Notice: Observe precautionary information on product labels and on the Material Safety Data Sheets.

2 KODAK DOUBLE-X AEROGRAPHIC Film 2405 • AS-75