Hi Ricardo – please contact the manufacturer of the scanxDuo directly to determine if they have a TWAIN driver available for that machine. It is up to each manufacturer to develop, maintain and distribute TWAIN drivers for their models.
I would suggest contacting a representative at Canon directly to gain access to the proper download. TWAIN supplies the tools and standard for manufacturers to develop TWAIN drivers. It is up to the manufacturer to develop the TWAIN driver for their machines and distribute to users.