HI wvpearson.
You can download the Mac OS X drivers for the imageCLASS D420 from the Canon USA website. Please click the link below:
imageCLASS D420 - Drivers & Software
Once you are at the site, your operating system will be automatically detected. Select DRIVERS and download the files listed.
I hope this information is helpful to you. Should you need further assistance, please contact us at 1-800-OK-CANON (1-800-652-2666). Have a good day.
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