I have an inexpensive Canon B&W laser printer. I've had it working in my Windows 10 PC, but now it does not show up in Windows Device Manager. I went to the Canon support website to see if I could download drivers, but it wants a model name/number. So does the phone support. There's no name on the top or the front of the printer; there's a stuck-on label on the back with the character string "F173200" and what would appear to be a serial number. I don't see "Pixma" or "ImageClass" or anything like that anywhere. I know I didn't consciously uninstall the printer in Windows, and I can't imagine why it would suddenly not be known to Windows. Can anyone help?