It may be easier to find a more well behaved ink instead of trying to get everyone else at the office to use a heavier paper. However, Rhodia, Tomoe, and Clairefontaine are your go-to papers that are fountain pen friendly. But this isn’t exactly something you’d keep around to run through the office printer.
If this is a private printer and you’re running a few pages occasionally, you could get a decent A4 notepad and pull pages as needed.