Kodak E-2411 manual Storage and Handling, Darkroom Recommendations, Exposure, LATENT-IMAGE Keeping

STORAGE AND HANDLING

Store unexposed paper at 13°C (55°F) or lower. High temperatures or high humidity may produce unwanted quality changes. To avoid moisture condensation on paper that has been refrigerated, allow it to completely warm up to room temperature before opening the package. For best results, remove the paper from cold storage the day before printing, or use the warm-up times in the following table. For more storage information, see KODAK Publication No. E-30, Storage and Care of KODAK Photographic Materials — Before and After Processing.

Warm-Up Times (in Hours) to Reach

Room Temperature of 24 °C (75°F)

	From a Storage Temperature of
Size	-18°C	2°C	10°C
	(0°F)	(36°F)	(50°F)
50-sheet box	3	2	2
100-sheet box	4	3	2
Rolls wider	12	9	6
than 11 in. (28 cm)

These times are based on a single package, positioned to allow free air circulation. After you remove the paper you need, re-wrap the package and reseal it with tape to restore the moisture barrier.

Handle this paper very carefully by the edges to avoid creases and fingerprints. This high-speed paper is extremely sensitive to light; store and transport it in lighttight boxes.

DARKROOM RECOMMENDATIONS

Do not use a safelight; handle unprocessed paper in total darkness. Be sure that your darkroom is lighttight. Eliminate stray light from the repro camera lamps, timers, digital displays, etc.; even indicator lights and fluorescent tape can fog the paper.

EXPOSURE

You can expose EKTACHROME RADIANCE III HC Copy Paper from opaque originals in a process or repro camera by using subtractive, tricolor-additive, or semi-additive methods. Although this paper is balanced for exposure with a light source of 3200 K, you can use any of the following: pulsed xenon, incandescent, flood, or halogen lamps. Do not use fluorescent lamps or electronic flash.

Using a Process (Repro) Camera

For a 1:1 ratio in a Klimsch Super M3 Repro Camera equipped with a halogen light source, use these trial-exposure conditions:

Trial Exposure Using a Process (Repro) Camera to Expose KODAK EKTACHROME RADIANCE III HC Copy Paper

		Exposure Time (in
Printing Method	Filters	Seconds) for an
		Aperture Setting
		of f/22
Subtractive	CC10Y	4.4
Tricolor-additive	No. 29 Red	4.5
(with KODAK
	No. 61 Green	12
WRATTEN Gelatin
	No. 47B Blue	9.2
Filters)
Semi-additive (with	White Light	2.3
KODAK WRATTEN	No. 29 Red	1.5
Gelatin Filters)
	No. 61 Green	4.5

Because exposure times and filtration will differ with the equipment, the light source, the original, your process control, etc., use the tables as a guide.

To maintain high image quality, control flare as much as possible. Flare consists of stray ambient light and scattered image light that might reach the paper during exposure.

Follow these procedures to control flare:

•Keep the lens surfaces, mirrors, filters, and copyboard glass clean and free of scratches.

•Keep the interior of the camera clean.

•Use the additive or semi-additive printing method whenever possible to minimize the number of filters in the optical path.

•Adjust the copyboard lights and room lights so that neither the lights nor reflections from the copyboard glass fall on the camera lens.

•Mask the areas surrounding the original with black material.

Adjustment for Long or Short Exposures

You will not notice a change in the speed or in the contrast of RADIANCE III HC Copy Paper at exposure times from

0.5second to 100 seconds with tungsten, halogen, or

pulsed-xenon light sources. We do not recommend using flash to expose this paper. The short flash exposure times will affect the quality of the prints.

LATENT-IMAGE KEEPING

You should not see any shifts in the latent image with different keeping times between exposure and processing. Therefore, you do not need to change your printing procedures to compensate for latent-image shifts under normal temperature and handling conditions.

2 KODAK EKTACHROME RADIANCE III HC Copy Paper • E-2411