Canon IP4840 Printer QuickStart for Mac OS X 10.x
The Mac Tutorial Shows You Step-by-Step How-to Download and Install the Canon PIXMA IP4840 Series Photo Printer Driver and Software on Mac OS X 10.12-Sierra/10.11-El-Capitan Unix/BSD Desktop.
The same procedure for Installing the Canon IP4840 Printer Drivers is Valid also for: Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks and Mac OS X 10.10 Yosemite.
Canon IP-4800 Printers Series Include the following Models: PIXMA IP-4810, PIXMA IP-4820, PIXMA IP-4830, PIXMA IP-4840, PIXMA IP-4850, PIXMA IP-4860, PIXMA IP-4870, PIXMA IP-4880.

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Download Canon IP4840 Series Printers Mac OS X Driver:
Get the IP4840 Series Printers CUPS Driver.
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Double-Click on .dmg Canon Archive
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Double-Click on IP4840 .pkg Installer
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Follow Wizard & Click on Install to Start Installation
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How-to Install Canon IP4840 Printing Software for Mac OS X: