Kodak P-255 manual Processing, Liquid Developer Agitation Technique

Page 6

PROCESSING

Handle unprocessed film in total darkness. After development is half complete, you can use a suitable a safelight lamp equipped with a KODAK 3 Safelight Filter (dark green) and a 15-watt bulb for a few seconds. Keep the safelight at least 4 feet (1.2 metres) from the film.

When you use these films for pictorial applications, you must select a film-and-developer combination carefully. With 35 mm Technical Pan Film, use TECHNIDOL Liquid Developer. With Technical Pan Film / 4415 and 6415 (sheets and 120 size), use only TECHNIDOL Liquid Developer. Observe the precautionary information on the developer packaging.

KODAK TECHNIDOL Liquid Developer Small-Tank Processing (rolls)

You can process roll film in small 8- or 16-ounce stainless-steel or 10- or 20-ounce plastic tanks with spiral reels using the following instructions. With some spiral reels, the 35 mm film may be susceptible to nonuniform processing effects if agitation is not carefully controlled. Pouring the developer on dry film through the light trap in the tank top can also produce nonuniformity. To avoid processing problems, pour the developer into the tank before you insert the loaded reel, and follow the agitation recommendations below.

Preparing a Working Solution: Mix your liquid developer according to the instructions packaged with the developer. Use water at 68 to 86°F (20 to 30°C).

To process one roll of 135-36 film, make 8 fl oz (237 mL) of developer solution. Stir until the solution is completely mixed. To process one 120-size roll or two 135-36 rolls of film in the same process, prepare one pint (16 fl oz [473 mL]) of developer.

You can reuse the developer if you increase the development time of the second process by 1 minute. Store the developer in an air-tight bottle, and use it within a week.

Processing with TECHNIDOL Liquid Developer in a

Small Tank: The following procedure may vary from the instructions provided with your tank, but you must follow it to obtain good results.

Develop roll film for the amount of time in the table below, according to the developer temperature you choose.

Development Times for

KODAK TECHNIDOL Liquid Developer

in Stainless-Steel 8- or 16- oz or Plastic 10- or 20-oz Tanks

Temperature

68°F (20°C)

77°F (25°C)

*

86°F (30°C)

Time

9 minutes

712 minutes

612 minutes

*With 35 mm film only

1.Fill the tank with developer adjusted to one of the temperatures in the table.

2.In total darkness, drop the loaded reels into the tank of solution and attach the top to the tank.

3.Firmly tap the bottom of the tank on the top of the work surface to dislodge any air bubbles. (You can then turn on the room lights.)

4.Provide immediate agitation by shaking the tank vigorously up and down 10 to 12 times for 2 seconds. Do not rotate the tank.

Liquid Developer Agitation Technique

F002_0196AC

5.Let the tank sit for 30 seconds, and then start the next 2-second agitation.

6.Repeat steps 4 and 5 every 30 seconds for the remainder of the development time.

6

KODAK PROFESSIONAL Technical Pan Film P-255

Image 6
Contents June 2003 P-255 ApplicationsSizes Available Kodak Professional Technical Pan FilmExposure Spectral SensitivityStorage and Handling Filter FactorsIf Indicated Use This Adjustments for Long and Short ExposuresDarkroom Recommendations Development Machine Developer ExposureCopy Applications Specific ApplicationsPictorial Photography Microphotography MicrofilmingAstronomical Photography PhotomicrographyElectron Micrography Laser PhotographyProcessing Liquid Developer Agitation TechniqueTray Processing sheets Final Steps in Tank Processing- 68 to 86F 20 to 30CFinal Steps in Tray Processing- 65 to 70F 18 to 21C Step No. Path Temperature RacksOther Kodak Developers Processing SequenceSpectral-Sensitivity Curves IMAGE-STRUCTURE CharacteristicsPrinting Modulation-Transfer CurvesCharacteristic Curves Exposure Tungsten, 1/25 second11 min =0.70 CAT 817 Quick Reference Guide to DevelopersMore Information Kodak Developer to Use for