Kodak DryView 8300 Service Bulletins page 81

2. Fine Line, Repetitive Scratches
Problem
Scratches on the film on the emulsion side, in the same direction as film travel, deep enough to be seen on
a light box. Typically, the scratches are in the same location on each film and are repetitive from film to
film. This type of scratching is different from the random fine-line scratching that occurs when the sheet of
film rubs on the film below it as it is being fed from the film tray. (See Article 3 following for a discussion
of random fine line scratches.)
Cause
Scratching is usually caused by small specks of debris that accumulate in the film path in specific areas.
Common areas where this occurs are (1) the ramp edge of the film tray, (2) the entrance guide from the
film tray to the separator rollers, and (3) the top edge of the scoop in the capstan area.
Solution
Remove the small specks of debris from the top three areas of accumulation indicated above.
1. The operator should clean the film tray (which includes the ramp edge) each time a new package of
film is loaded, as outlined in the User Guides for the 8600 and 8610. After cleaning there sometimes is
still a small burr on the ramp edge that needs to be polished off with fine lapping paper.
2. The entrance guide to the separator area in the 8610 is made of a Rigitex material, and has been
designed to reduce scratching in this area. In any 8600 that exhibits scratching, the entrance guide (part
number 6E8510) needs to be replaced. If the entrance guide has been updated and is still
causing scratches, it may need to be polished with lapping paper to remove any buildup of debris.
3. The scoop, which provides a path for the film to move from the separator assembly to the capstan area,
should also be composed of Rigitex. The top edge of the scoop, closest to the capstan pinch rollers,
may also need to be polished with lapping paper. To gain access to the top edge, remove the capstan
pinch rollers. Once the scoop is polished and the pinch rollers are back in place, print several films to
verify that scratching has been eliminated.
3. Random Fine Line Scratches
Problem
Fine line scratches on the emulsion side of the film, in the same direction as film travel, deep enough to be
seen on a light box. Typically, the scratches are not in the same location on each film, and are relatively
short in length, often less than 3 inches (75 mm). In many cases, they are more predominant on the bottom
one third of the film.
Cause
This fine line scratching occurs when the sheet of film rubs on the film below it when it is being fed from
the film tray.
Solution
This is a system problem, and there is no comprehensive solution, since both the equipment and the film
are responsible for the scratches. If a customer has lodged a complaint, prepare to send some example films
with the offending scratches identified (marked). Call TAC to obtain the address to send the example film
to, and for the next step in resolving the customer complaint.