Kodak D-45 manual Processing, Duplicating Masters, Photographic Properties, Exposure Optimization

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Processing

Kodak Komstar Microimage Processors contain a heated metal drum which processes this film at 1.8 meters (6 feet) per minute. Starting point recommendations are 119 ± ½°C (246 ±1½°F) for five (5) seconds.

Duplicating Masters

Print film density aims recommended when printing from Kodak Imagelink DL 1000 Microfilm

/2482 Microfilm masters onto Kodak Premium

1000 Thermal Print Film 1323:

Kodak Premium 1000 Thermal Print Film 1323

Optimum background density

2.20

 

 

Preferred background density range

1.90 to 2.25

 

 

Minimum background density

1.80

Kodak Imagelink DL 1000 Microfilm / 2482 Microfilm Densitometry = Diffuse Status M Blue

Kodak Thermal Print Film 1353/1323 Film Densitometry = f/4.5 Visual Projection

See Kodak Publication D-49 for a description of Kodak Thermal Print Films.

Photographic Properties

The following data are based on development in the Kodak Komstar Microimage Processor as recommended.

Exposure

Kodak Imagelink DL 1000 Microfilm / 2482 is exposed inside a computer output microfilmer using a helium-neon laser for characters and a tungsten light or helium-neon laser exposure for the forms slide.

The optimum exposure intensity setting is determined by selecting from a complete intensity series produced according to procedures as indicated under “Exposure Optimization” below.

Spectral Sensitivity

Optimum sensitizing for helium-neon lasers (633 nm).

Exposure Optimization

To determine the proper COM and duplicator exposure settings, perform the following procedure:

1.Produce a processed BLANK master fiche from the COM.

2.Run an exposure series on the duplicator.

Request 11 copies in the semiautomatic or manual mode.

Set the exposure to 1.0.

Using the fresh Kodak Imagelink DL 1000 fiche, start the copy cycle.

After each exposure, increase the exposure setting by 0.1.

There should be 11 fiche produced, with increasing background densities.

3.Using either a densitometer or the Kodak Thermal Print Density Comparator, select the fiche which has a density of 2.2 or close to, but not darker than, the “Upper Limit” patch on the Kodak Comparator.

This will become the background onto which the Komstar characters will be printed.

4.Produce an exposure series of Komstar data onto Kodak Imagelink DL 1000 Microfilm such that it can be duplicated onto a fiche with the proper background density.

Depending on the Komstar being used, this can be done in several ways.

Kodak Optistar Image Writer Note the current intensity settings.

Run either a test job or the “Quality Monitor Test” from the Optistar Systems Console. Run the job several times and vary the intensity up or down (in increments of 10) each time.

Komstar 100/200/300 Microimage Processors, Komstar Microimage Processor IV, and Optistar Processor V

Run either a test job or the “Quality Monitor Test” from the Optistar Systems Console. As the Komstar is running and starts a new column of data (determined by either counting frames or listening for the camera to change directions), increase the “Data Intensity” setting by one. This should produce a fiche with eight columns of data at eight different settings.

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D-45

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Contents Product Applications DescriptionStorage Features and BenefitsPhysical Properties before-process HandlingExposure Optimization ProcessingDuplicating Masters Photographic PropertiesViewing and Printing After-Processing InformationHandling Print-upCharacteristic Curve Modulation Transfer Function CurveSpectral Sensitivity Curve Eastman Kodak Company Ordering Information Imagelink DL 1000 Microfilm