Printer prints blank pages?

The test prints work, but when I'm trying to print a page from an adobe file, it just won't work. Ink is new. I just installed it too.
Update: It's Canon i860. A bit old, I know, but it's the only one I have ink for now. I tried tinkering with it yesterday; it finally worked without doing much like installing a driver, but I got purplish ink instead of black ink.
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