(above and below) |
|
| Appendix |
Problem | Cause | Remedy |
|
Scratches on the emulsion side of the negative |
|
| |
In the image area, | Dirty or damaged cross bars | Clean or, if defective, replace the film gate |
|
over several frames | on the film gate |
|
|
In the image area, | Upper or lower film loop too long, | Check the loop length of the magazine |
|
short and periodically recurring | film touches inside of magazine throat |
|
|
Outside the image area | Dirty or damaged longitudinal bars | Carefully clean film gate and magazine throat |
|
| on the film gate | or, |
|
| or film running surfaces in the magazine throat | if defective, replace |
|
|
|
|
|
Scratches on the glossy side of the negative |
|
|
|
In the image area | Dirty or damaged film track | Clean film track and pressure plate |
|
| or pressure plate | or, if defective, replace |
|
Outside the image area | Dirty or damaged longitudinal bars | Carefully clean longitudinal bars and magazine throat |
|
| on the film track | or, |
|
| or film running surfaces in the magazine throat | if defective, replace |
|
Scratching in general | Strong tendency of raw film stock to build up | Notify the manufacturer of the film stock, |
|
| emulsion, dust on raw stock from perforation | use different film stock |
|
| process, extreme temperatures, |
|
|
| scratched raw stock |
|
|
|
|
|
|
219