Kodak 2302 User Manual
TECHNICAL INFORMATION DATA SHEET
TI2497 Issued 11-99
Copyright, Eastman Kodak Company, 1999
KODAK Black- and- White Print Film 2302 / ESTAR Base
1) Description
KODAK Black-and-White Print Film 2302 / ESTAR Base is a low speed, high-resolution print film. This bluesensitive black -and-white film is designed for general release printing. It is also useful for making both positive and
negative titles and RGB separations from electron beam recorders. 2302 is coated on a proprietary ESTAR base
which offers improved physical performance throughout the entire motion picture system.
Please refer to Section 6 for processing information on 2302
Laboratory benefits include:
• Polyester base —greater tear strength, durability, dimensional stability, and archival keeping.
• Process surviving anti -static layer—protection from static marks prior to printing.
• Process surviving anti -static layer—reduced dirt attraction to processed prints and static protection prior to
processing.
• Process surviving lubricant—better transport characteristics for processed film.
• Patented antihalation dye technology—superior halation protection (no fringes in titles).
Benefits for distributors and exhibitors include:
• Polyester base, process surviving anti -static layer, scratch resistant backing layer, and process surviving
lubricant—cleaner, more durable prints.
• Patented anti -halation dye technology—no fringes in titles and sharper projected image.
• Improved transport throughout the entire system.
Benefits for the archivist include:
• Polyester base —better archival keeping properties than current 5302.
2) Base
KODAK Black-and-White Print Film 2302 / ESTAR Base is coated on thin 0.0048 inch (120 micrometers) ESTAR
(polyethylene terephthalate) base, featuring a proprietary electrically conductive anti-static layer, a scratch resistant
backing layer, and a process surviving backside lubricant which remains with the film after processing, eliminating the
electrostatic attraction of dirt particles to the processed print even at very low relative humidity. A very thick polymeric
backing layer coated on top of the anti -static layer provides improved resistance to backside scratches, cinch marks, and
abrasion of both raw stock and processed film. The backing layer also contains a process surviving lubricant and matte
to optimize winding and transport characteristics.
3) Photographic Properties
Sensitometry
Data Sheet—2 Copyright, Eastman Kodak Company, 1999
TI2497 Issued 11-99
SO-302 sensitometry (characteristic curve) is different than 5302/SO -434. The gamma is slightly lower resulting from
an efficient anti -halation layer which reduces light scatter. This antihalation layer is located under the emulsion layers,
using a patented solid particle dye that decolorizes and is removed during processing. This dye offers superior
protection against halation (exposure by light reflected back from the support surfaces), minimizing fringing in very
high contrast scenes such as white titles or night scenes with automobile headlights. In addition to cleaner titles and
credits, the film has improved image sharpness.
As a result of the sens itometric changes in 2302, process development time and printer setups may need to be
modified slightly to achieve a "look" that is similar to 5302/SO- 434. Since 2302 maintains the same degree of
process sensitivity as current product, a desired "look" is easily achieved.
4) Darkroom Recommendations
Use a KODAK OA Safelight Filter / green-yellow, with a 15-watt bulb, no closer to the film than 1.2 meters (4 feet).
5) Storage of Raw Stock
Film is perishable and changes with prolonged storage or adverse storage conditions. After packaging, Kodak stores
print film raw stock at 13°C (55°F) or lower. Transportation and distribution warehousing are refrigerated. Print film is
not adversely affected by short-term storage at room temperatures (less than 25°C /77°F). For extended-term storage,
store at -18°C (0°F) or lower. Avoid unconditioned storage, as sensitometric and physical changes occur more rapidly at
high temperatures, and may degrade film quality. If refrigerated storage is used, allow the sealed can or foil bag to
equilibrate to room temperature before opening to avoid moisture condensation. Unused raw stock should be rebagged
and put into sealed film cans before being put back in refrigerated storage. Process exposed film promptly.
6) Printer Co nditions
Negative film of average density will produce satisfactory prints if run on a continuous additive printer (such as the Bell
& Howell Model C) run at 180 ft/min., equipped with a 1200-watt lamp operated at 85 volts and a 1.0 neutral density
filter in the beam for 35 mm. Typical starting-point printer settings are as follows:
Beam Trim
Tape Setting
Setting
Red 17 21
Green 17 21
Blue 17 21
7) Processing
KODAK Black-and-White Print Film 2302 / ESTAR Base may be processed along with other D97 processed blackand-white films using Kodak recommended D97 Process. No change in process sequence is required. Complete process
specifications, formulae, and procedures are contained in KODAK Publication No. H-24-15, "Manual for Processing
EASTMAN Motion Picture Films, Module 15". The processing times may require modification depending upon the
process.
Data Sheet—3 Copyright, Eastman Kodak Company, 1999
TI2497 Issued 11-99
Notice: Observe precautionary information on product labels and on the Material Safety Data
Sheets.
Processing Step Temperatu
re
Time Replenishment
Rate
(mL per 100
ft)
35 mm
KODAK Developer D-
[1]
97
Stop Rinse
[3]
70°F (21°C) 50
70°F (21°C) —
[2]
650
(D-97R)
12,000
sec
KODAK Fixing Bath
[1]
F-5
Wash (countercurrent)
Dry 95 °F(35 C) —
[1]
Agitation in the developer and fixing bath should be by recirculation through submerged spray
70°F (21°C) 6 min
70°F (21°C) 10
min
[4]
600
12,000
jets that impinge on the film strands.
[2]
Develop to recommended control gamma of 2.4 to 2.6 (Status A). Calculation to obtain control
gamma is Dmin + 0.95 density to + 0.50 log E.
[3]
Countercurrent flow of fixer-laden water overflow from the wash tank, pH about 6.
[4]
Many factors affect the drying: air temperature, relative humidity (RH); volume, rate and
distribution of the airflow; final squeegeeing, etc.
SO-302 has a slightly higher wet load. Since processor dryer conditions vary, please monitor the film as it goes
through the dryer the first time to assure that the film is being adequately dried. Adjust drier accordingly.
In a conventional convection-type drying cabinet with air at about 95°F (35°C) and 40 to 50 percent RH, drying will
take 15 to 20 minutes. With an impingement type drying cabinet (with a higher temperature and lower RH), drying
time is greatly reduced. With either type of dryer, the film should be dry without tackiness 1/2 to 2/3 of the way
through. Upon cooling to room temperature after leaving the dryer, the film shoul d be in equilibrium with the room air
at approximately 50 percent RH.
Print film occasionally exhibits "static cling" during projection, where several laps of the film may stick together as they
feed to the control arm on a platter, causing erratic platter behavior and possible film jam or "brain wrap". This behavior
is affected by the design of the platter, the ambient conditions in the projection room, the winding orientation and curl
of the film, and a variety of other factors. Kodak recommends maintaini ng a relative humidity of 50-60 percent RH in
the projection room.
Staticide 3000G, a process additive available from ACL Staticide, may be added to the final wash (tank and replenisher)
of the D97 Process at a concentration of 0.01% (0.1 ml per liter) to reduce the incidence of "static cling". Kodak testing
and trade experience have shown that films having a process-surviving conductive anti -static backings will be much less
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