Equipped with two media rolls and the automatic roll switch feature, the Canon imagePROGRAF iPF840 eliminates the cause of many bottlenecks in busy printing environments. Switch between different media type, sizes or use two rolls of the same paper for printing of large, consecutive jobs. The built-in 320GB hard drive makes handling multiple complex jobs simple, especially in shared printer environments. Relieve workload from your computer, store and retrieve print jobs with the touch of a button, and utilize a Remote User Interface and password-protected mailboxes to keep your workgroup productive. The iPF840 printers Economy Print Mode helps lower cost-per-print while the sub-ink tank system enables hot-swap ink replacement for continuous printing.