So long as it is your router (A Jet pack is part router) yes, you can connect printer and computer via it provided your do not have too many "Clients" on the router (Most Jet Packs are client limited, often to five)
I have 9 clients here and am working on more
Computer (laptops) 1`and 2
Server 1 (Desktop)
ReplayTV 1 and 2
Phone
Tablet
printer
Chromnecast
Want a 3rd laptop or cromebook (I'm really using laptop 2 for an off-purchase reason job that a chromebook could do as easily)
Am wanting a Raspberry PI as well (May replace the Chromecast cause it is not exactly as advertised (no surprise)
One comnputer is used mostly for "Plan B" motgor home repair (Plan B is to win PCH,, Least you think I'm holding my breath Plan A is more likely to happen and in fact should be ready about the 1st of the year.. If not sooner.. But Plan B would be nice Very nice)