I take the picture and it doesn't come out at all ...

I take the picture and it doesn't come out at all ...

Hi I have a instax mini 9 and I am having a similar problem... I take a picture and it comes out fine.. But the next two or so I take the picture and it doesn't come out at all... First it starts with like bluish dots all over the photo and then it turns completely black. Any ideas of what would be the problem.. I replaced the batteries and that didn't work.. Any help please!