Kodak Module 9 specifications Tank, Temperature

Page 14

Table 9-5 Mechanical Specifications for Process ECP-2E with UL Bleach

 

KODAK Formula

Temperature*

 

Time

Replenisher

Recirculation (R);

Process Steps

 

 

 

 

 

 

 

 

(Wash Rate) per

 

 

Replen-

 

 

 

 

 

Filtration (F);

Tank

 

°C

°F

 

min:sec

100 ft. (30.5 m)

 

 

 

Turbulation (T)

 

 

isher

 

 

of 35 mm Film†

 

 

 

 

 

 

 

 

 

 

 

Developer‡

SD-50

 

SD-50Ra

36.7

± 0.1

98.0

±

0.2

3:00

690 mL

R, F§, & T

 

 

 

 

 

 

 

 

 

 

 

@ 125 to 175 L/min

 

 

 

 

 

 

 

 

 

 

 

 

Stop**

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 mL††

None

‡‡

 

 

 

27

± 1

80

±

2

1:00

400 mL

R & F

§

“UL” Bleach

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

@ 40 to 60 L/min

 

 

 

 

 

 

 

 

 

 

 

 

Wash††

—

 

—

27

± 3

80

±

5

:40

1.2 L††

None

Fixer

F-35d

 

F-35dR

27

± 1

80

±

2

:40

§§

R & F

 

 

 

 

 

 

 

 

 

 

 

@ 40 to 60 L/min

 

 

 

 

 

 

 

 

 

 

 

 

Wash††

—

 

—

27

± 3

80

±

5

1:00

1.2 L†† , ¶¶

None

Final Rinse***

FR-2

 

FR-2R

27

± 3

80

±

5

:10

400 mL

R & F

 

 

 

 

 

 

 

 

 

 

 

@40 to 60 L/ min

 

 

 

 

 

 

 

 

 

 

Dryer

 

Type

Temperature

 

RH

Air Flow

Time

 

 

 

 

 

 

 

 

Impingement

57°C (135°F)

 

15% to 25%

5000ft3/min

3 to 5 min.

 

 

 

 

 

 

 

 

 

Nonimpingement

 

43° to 49°C

 

15% to 25%

5000ft3/min

5 to 7 min.

 

 

 

 

(110° to 120°F)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lubrication

35 mm

 

Edgewax

 

 

 

 

 

 

 

16 x 18 mm

Full-coat lubrication

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Celsius temperatures are rounded consistent with process-control requirements. Fahrenheit temperatures are primary.

†For 16 mm film, use one-half the 35 mm film replenishment and wash rates. Since processing operations can vary greatly in resp ect to such factors as film-to-leader ratio, squeegee efficiency, and amount of film processed per unit of time, adjustments in replenisher rates and/or formulas may 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.

‡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.

§Use polypropylene, fiberglass, or bleached cotton as a filter medium in the developer. Viscose rayon is not recommended for prebath, developer, or bleaches because of undesirable photographic effects.

¶ Design developer racks with submerged rollers and rack-drive assemblies to minimize solution aeration and splashing.

**Install an exhaust over the stop tank, since developer carried over into the stop generates sulfur dioxide. Install an exhaust over the bleach to remove vapors. The exhaust system should produce an air flow of 175 ft7.5/min (5 m3/min) for every square foot (0.09 m2) of solution surface and provide 50 to 75 ft/min (15 to 23 m/min) control velocity over the surface of the tank. The exhaust system should produce an air flow of 175 ft3/min (5 m3/min) for every

square foot (0./09 m2) of solution surface, and provide 50 to 75 ft/min (15 to 23 m/min) control velocity over the surface of the tank.

††Keep the wash after the bleach effective enough to prevent film mottle from the reaction products of bleach carry-over into t he fixer. Two-stage countercurrent washes with squeegees between stages is recommended for the stop wash. Three-stage washes are recommended for the bleach and

final wash. The wash rates given in the table assume the use of such staged washes. Single-stage washes require substantially greater wash rates. ‡‡Reconstitute and reuse the bleach to obtain the full economic advantage. See Module 5, Chemical Recovery Procedures, for a procedure for

reconstituting and regenerating “UL” Bleach.

§§Fixer replenisher requirements vary with silver recovery equipment, method, and operations 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.

¶¶ The wash rate given in this table assumes that the final wash is composed of three countercurrent-wash stages with squeegees between stages.

***The final rinse contains a wetting agent to promote more efficient squeegeeing of the film strand prior to drying. The Proxel GXL or Spectrus NX1106 controls biological growth in the tank.

9-12

Process ECP-2E Specifications

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Contents Kodak Table of Contents Film Structure Films and Process SequenceDesignated Films Alternative Ferricyanide or UL Bleach Sequence Other Film CharacteristicsProcess ECP-2E Steps Safelights for Darkroom IlluminationProcessing Machine Design and Construction Machine DesignNormal Room Light Dark Squeegee Exhaust Construction Materials Aisi Type Plastics Austenitic Solution PolyvinylHastelloy C Bleach Ferricyanide or ULDryer Cabinet FiltersCrossover Squeegees Film LubricationMachine Exhaust and Room Ventilation Systems Operating SpecificationsMechanical Specifications Countercurrent WashesFiltration F Kodak FormulaTime Replenisher Recirculation R Process Steps 100 ft .5 mFixer 35d 35dR 27 ± @ 40 to 60 L/min Wash†† 100 Temperature TankSelecting a Bleach Formulation UL Bleach FormulationsConversion to UL Bleach Controlling Bleach Tank Concentration with Replenisher RateChemical Supplies and Substitutions Drying SpecificationsTurbulation Specifications Bleach Wash Wash-Water Flow RatesStop Wash Final WashBulk Chemicals Processing Chemicals FormulasPackaged Chemicals Suppliers of Processing Chemicals H2SO4 Solution Mixing Good mixing practicesDeveloper SD-50 Formulas and Analytical SpecificationsDeveloper Stop SpecificationsAlternate Developer Developer SD-51Accelerator AB-1b AB-1bR AcceleratorBleach Persulfate Bleach Persulfate Bleach SR-30 SR-30RAlternate Process Bleaches UL Bleach* or UL House BleachPotassium UL Bleach Ferricyanide Bleach SR-27 SR-27RFixer 35b 35-bR FixerAlternate Process Fixer Fixer 35d 35dRFinal Rinse FR-2 FR-2R Final RinseSodium Fixer Optical Sound Processing Storage of SolutionsSound Track Operating Specifications OverviewMore Information

Module 9 specifications

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