Canon imagePROGRAF GP-4000 - Manual (Page 236)

◦ Secure (VSITR) ◦
Overwrites the entire hard disk with 00 next overwrites with FF after the data encryption key
specified for the hard disk drive is erased. After repeating this process three times, the entire hard
disk is overwritten with AA. It is virtually impossible to recover the overwritten data. Conforms to the
guidelines of German Federal Government (VS-ITR).
• Data deletion •
Selects the method to delete data on printer's hard disk.
Erasing Data on Printer's Hard Disk
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