Kodak I7300 manual Film curl Microfilm curl check

Film curl

Microfilm curl check

∙Make sure there is minimal skew (a slanted cut leaving an angled gap) between the leader tape and film. The skew should be no more than 0.002 in./in. (0.05 mm/mm).

Skew

0.002 in./in.

(0.05 mm/mm) or less

∙The thickness of the connecting section should be no more than 0.014 (0.38 mm).

Thickness 0.014 in. (0.38 mm) or less

For most film types and operating conditions, a certain amount of film curl can exist without adversely affecting the performance of the scanner (see the next section entitled, “Microfilm curl check”). Under certain conditions, however, curled film ends may result in degraded threading performance. Specific conditions that may result in degraded performance with curled films include:

∙partial reels (reels containing less than a full amount of film)

∙operating environments with low relative humidity

∙enclosed ANSI magazines

In order to maintain reliable film threading under these conditions or others where curled films may cause degraded performance, certain steps can be taken:

∙Straighten the film end (leader) by forcing it over a straight edge or surface to remove the curl and/or twist from the first 6 to 8 inches. (150 to 200 mm). Care must be taken not to crease or damage the film end during straightening.

∙Attach a straight film leader in good condition that is approximately

36 in. (915 mm) long. (A leader of 5-mil thick polyester film will obtain the best results.)

The microfilm can have a certain amount of curl without affecting operation. To check the curl of your microfilm:

1.Place the diagram upright with the outline of the reel at the top of the page.

2.Place your reel over the outline and let the film hang down.

3.Move your reel until the film’s curl matches one of the arcs in the diagram.

The film curl is acceptable if it falls within the shaded area (see the next page).

A-61133 March 2003 A-9