problem with images in bright light

[luke1981]

Hi, I just bought a refurbished sx-70 from polaroids originals and I shot my first b&w pack of film. But I have a problem with some pictures: if I take a picture in broad daylight I get a strange bar two thirds up the frame:

https://ibb.co/j3JvkS

In some cases I can see the mark of the front door (the one with the Polaroid Land camera logo on it) on the image (the bar is exactly where the photo meets the slot when expelled)
If I take the shot in shadow it doesn't happen. Any ideas/help?

[mimi_club]

It seems like a kind of light leakage.