1. Please find the linux driver for Canon Image Runner IR2422
http://support-in.canon-asia.com/P/search? model=iR2422L&menu=download&filter=0&tagname=g_os&g_os=Linux
2. Select the particular ppd
/usr/share/ppd/CNCUPSIR2422ZK.ppd
3. change the printer settings to A4 paper size
