9-10 Process ECP-2E Specifications

Table 9-3 Mechanical Specifications for Process ECP-2E with PERSULFATE Bleach

Process Steps
KODAK Formula Temperature
*
* Celsius temperatures are rounded consistent with process-control requirements. Fahrenheit temperatures are primary.
Time
min:sec
Replenisher
(Wash Rate) per
100 ft. (30.5 m)
of 35 mm Film
†
† For 16 mm film, use one-half the 35 mm film replenishment and wash rates. Since processing operations can vary greatly in respect to such factors as
film-to-leader ratio, squeegee efficiency, and amount of film processed per unit of time, ad justments in repl enisher rates a nd/or f ormulas ma y be required
to maintain the recommended tank concentrations. With efficient squeegees, adjustment rates for 35 mm leader will be as low as 20 mL/100 ft.
Recirculation (R);
Filtration (F);
Turbulation (T)
Tank Replenisher °C °F
Developer
‡
‡ Maintain close control of developer time and temperature, since small deviations can lead to severe contrast mismatch. Use an accurate thermometer
for checking the temperature controller variability. The temperature should be uniform throughout the developer tank.
SD-50 SD-50Ra 36.7 ± 0.1 98.0 ± 0.2 3:00 690 mL R, F
§
, & T
@125 to 175 L/min
§ Use polypropylene, fiberglass , o r bleached cotton as a filter medium in the developer. Viscose rayon is not recommended for the developer or bleaches
because of undesirable photographic effects.
Design developer racks with submerged rollers and rack-drive assemblies to minimize solution aeration and splashing.
Stop
**
** Install an exhaust over the stop tank, since developer carried over into the stop generates sulfur dioxide. Install an exhaust over the accelerator tank to
eliminate odors. Install an exhaust over the persulfate bleach tanks to eliminate corrosion from chlorine vapors. The exhaust system should produce an
air flow of 175 ft
3
/min (5 m
3
/min) for every square foot (0.09m
2
) of solution surface, and provide 50 to 75 ft/min (15 to 23 m/min) control velocity over the
surface of the tank.
SB-14 SB-14 27 ± 1 80 ± 2 :40 770 mL R & F
@ 40 to 60 L/min
Wash — — 27 ± 3 80 ± 5 :40 1.2 L
††
†† The stop wash rates given in this table assume the use of two-stage countercurrent washes with squeegees between stages. Single stage washes require
substantially higher wash rates.
None
Accelerator
‡‡
,
**
‡‡Reconstitute and reuse persulfate bleach (SR-30) and accelerator (AB-1b), to obtain full economic advantage. See Module 5 , Chemical Recovery
Procedures, for procedures for reconstituting and regenerating persulfate bleach and accelerator.
AB-1b AB-1bR 27 ± 1 80 ± 2 :20 200 mL R & F
@40 to 60 L/min
Persulfa te Bleac h
‡‡
,
**
SR-30 SR-30R 27 ± 1 80 ± 2 :40 200 mL R & F
§
@ 40 to 60 L/min
Wash — — 27 ± 3 80 ± 5 :40 1.2 L
§§
§§ The wash rate given in this table assumes that the final wash and bleach wash are composed of three countercurrent-wash stages with squeegees
between stages.The spray pressure and flow rate depend on machine speed and equipment used.
None
Fixer F-35b F-35bR 27 ± 1 80 ± 2:40
¶¶
¶¶Fixer replenisher requirements vary with silver recovery equipment, method, and operating conditions. If provision is made for continuous electrolytic
desilvering for the recirculated fixer, the silver concentration should be maintained between 0.5 and 1 g/L. See Module 5, Chemical Recovery Procedures,
for details. The fixer and replenisher must be kept separate from other processes. Savings from reconstituting desilvered fixer overflow for use as
replenisher are possible.
R & F
@ 40 to 60 L/min
Wash — — 27 ± 3 80 ± 5 1:00 1.2 L
§§
None
Final Rinse
***
***Processing the print film does not require a formaldehyde stabilizer, therefore you may use Final Rinse, FR-2. FR-2 contains a wetting agent to promote
more efficient squeegeeing of the film strand prior to drying. The Spectrus NX1106 or Proxel GXL reduces biological growth in the tank.
FR- 2 FR-2R 2 7 ± 3 80 ± 5 :10 400 mL R & F
@ 40 to 60 L/min
Dryer
Type Temperature RH A ir Flow Time
Impingement 57°C (135°F) 15% to 25% 5000ft
3
/min 3 to 5 min.
Nonimpingement 43° to 49°C
(110° to 120°C) 15% to 25% 5000ft
3
/min 5 to 7 min.
Lub ri cat ion 35 mm
16 x 18 mm Edgewax
Full-coat lubrication