The toner is just powered plastic beads of very small diameter. "IF" by chance you do have a problem, just remove toner cartridge and shake it real good. That should take care of the problem. Takes maybe 15 seconds to remove cartridge.... well, that long if it's been a while and you don't remember for sure how to do it 
I use the laser for 99% of my printing needs now rather than the inkjet. The inkjet (color) is default on wife's computer with laser (B&W) default on my computer in radio room. Laser toner is a good bit less expensive than inkjet.
Ken H.