Canon printer ink will not dry?

I have had best results with another Canon ink jet printer that uses Pixma ink using only Canon photo paper. I have used other inkjet photo paper in that one and it has not run but the images were crisper with Canon photo paper and that printer has special settings to select the Canon photo stock. I also have the same small IP100 as you have but we have never put photo paper into it, just regular paper. It may be that the photo paper that you are using is not absorbing the ink properly. Prints should dry on photo paper in less than thirty seconds. I have a feeling that this is the result of the paper and not the ink - unless the cartridge included with the printer went bad. Try a black and white print on the same photo paper and see what happens. And also try a print on plain paper.