Re: Given the toxicity of the toner powder, Mike called an ambulance forthwith.
I used to get the job of refilling some (Fujitsu / Konica?) copiers at our office some 8-10 years ago. I'm not IT or a technician, but know my way around so they were happy to show me and leave me to it.
One day someone else decided it must be easy if a bozo like I could manage it and took it upon themselves. Getting the replacement black toner out from the cupboard, they saw what they thought was a plastic tab to pull out prior to inserting the drum, a la laser printer, except on these printers the toner was designed to be securely placed over the hopper, with the tab releasing the lid allowing toner to fall into the hopper.
The dust cloud, the mess and the stains will forever be emblazoned on my memory as it will the carpet and walls.