When using KODAK DITR Film / 4401 / 6.5 mil / Matte the following handling and use guidelines should be followed to assure consistent quality and performance:
- Assure imaged and non-imaged film is stored under specified conditions. Film should be stored flat and away from excessive cold, heat, humidity and direct sunlight. The ideal storage conditions are 32 - 70°F (0 - 21°C) and 40 - 50% relative humidity.
- Avoid storing large quantities of KODAK DITR 4401 Film to avoid the risk of having unused films near the end of its recommended shelf life.
- Practice inventory best practices by rotating incoming film stock for 'first in - first out' usage.
- Dispense film from its original black poly bag, or in the case of roll goods, from a dispenser to prevent damage.
- Handle individual sheets of film by the corners to minimize fingerprinting and scratching.
- Slip-sheet imaged films with paper or foam to protect the coated side. Film rolled or placed in a tube should also be protected on the coated side with slip-sheets.
- Large sheets of film should be rolled, coated side in, to transport from location to location to prevent damage.
Loading Film into Platesetters and Imagers
Loading film in any platesetter or imager is a critical process. Damage to the film by poor handling of the product can incur errors in loading, registration and imaging of the film. In most cases this will cause the film to be rejected by the platesetter or imager.
In platesetters or imagers with autofocus systems, if the film is bent or kinked, the film will move in and out of focus during imaging. This will be seen as artifacts on the final film.
Out of focus situations can also be caused by dirt, debris or any foreign bodies on the platesetter or imager drum or on the back of a film.
Film Coated Side Detection
Folding the film over on itself and visually comparing both sides to each other is an easy way of determining the coated side of the film. The coated side will appear less glossy or a duller black appearance than the film side.
Taping
When taping the film to the drum for imaging, use either a strechable or non-stretchable tape. Care should be taken not to over stretch the tape when applying to prevent bubbles or puckering. Tape is only necessary on the lead and trailing film edges across the drum to hold the film in place during imaging.
Film Cleaning
Water or water/alcohol cleaners are NOT recommended as they will attack the film's matte surface.
Opaquing
Ferric oxide or other water-based opaque is recommended to repair minor blemishes.
Dot Etching
KODAK DITR 4401 Film cannot be wet or dry etched.
