Support Information:
Device Type: Scanner
Manufacturer: canon
Model: canoscan n12400
Interface: USB
Operating System: Windows XP Home
Age of Device: < 2 years old
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=&qa5=17&qa7=1500&dp=2&qm0=canoscan+n12400&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=canon+Scanner+canon+canoscan+n12400+Windows+XP+H ome+)

To my knowledge, Canon never made such a model as n12400. Do you mean N1220U instead?

http://www.usa.canon.com/consumer/controller?act=DownloadIndexAct&fcategoryid=350

or N1240U?

http://software.canon-europe.com/products/0000469.asp