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visible bars on SP 2500/Frontier 390


Michaelka
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Hi everybody, we have got a problem with SP 2500, when scanning uncutted negativ-films with the automatic film carrier, sometimes in scans the bars are visible - what i mean is the space between the pictures, that can be seen as black borders in scans (sorry for my bad english) but it is visible only sometimes on several prints, sometimes nothing, it is not possible to try it out because it is incalculable if the bars apear or not. We are scanning about 100 to 200 Films a day, and it is obviously independent to the kind of film or something. Until now i tried cleaning any part in the light source, the carrier, the scanner-head , i mean the whole path  light takes in scanner, also the rollers,  sensors and the  masks, diffusion-plates etc. in the carrier.

Borders are visible sometimes, but each time on the same side. It looks like, as if the film sometimes is not transportes fast enough or scanning starts too early.

I would be very glad if there are some ideas to help, any kind of comment is welcome.

Thank you and kind regards

Michael

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here is an example, on the right side you cam see a small uneven black border, but the image is rotated 180 degrees because we are scanning all films from the end.  So in the original scan the border is on the left side, as if scanning stops too late or film is transported too far.

kind regards

Michael

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Once again to get it more clearly: othis examples you have the original scan,  borders are visible on the left side at any time, as said above it seems as if scanning stops too late or film is transported too far. I already cleaned any part in light path of carrier and scanner-head. And it is getting more worse during the last two weeks.

Thank you very much for help!!

Michael

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