Originally Posted by
der_saeufer
As others have said, inkjet photo paper may have a coating on it. I wouldn't use it in a laser printer.
Inkjet "regular" (i.e. letter) paper is just paper made in such a way that ink is less likely to bleed across the fibers and works perfectly fine in a laser printer. It tends to cost more, though.
Except ...
One of my mono lasers (HP 5SI) worked flawlessly until one day I mistakenly used inkjet paper (had some laying around). It still printed fine, but it would repeatedly jam every few pages. PITA.
Replaced it with regular printer/copier paper and all was well again. I don't know why that happened, but, as they say, I have been warned!