Summary: Please note that this review is based upon my experience with this printer in Mac OS X 10.8. This review will likely not be typical of Windows users, so if you're a Windows user and are looking for a nice MFP, PLEASE don't let my review sway you away from this printer. There are plenty of other reviews here to give you a good idea of what you will experience as concerns the Windows OS.
Good printer but don't buy until you price the toner
Jeffrey Cross, Amazon
5 January 2013
Summary: After 6 months, we have replaced this printer because of ridiculous toner prices. You have to choose $80 Canon 128 toners or cheap after-market toner. Read the reviews - the Canon 128 gets very limited page output for a VERY expensive cartridge. So, we tried two brands on after-market toners. Both produced unacceptable output. Don't buy this printer without researching the toner cartridge cost and reviews.
Summary: What a frustrating printer. I was excited because it had good reviews and had all the features I wanted: printer, scanner, copier, flat bed and good speed. I couldn't get it to work for a long time, so it sat in a corner of my office until I could take the time to deal with it. A few months later, school has begun again, and I needed my printer and scanner.
Summary: I purchased this product to replace and older Canon MF4370DN - which I loved. I took the older Canon to our weekend place - but will be bringing it back to my home office! Anyway - I bought the D550 for the ADF function. Alas, the ADF doesn't like more than 4 or 5 pages in a row, then it jams up by taking two or three pages at once. When you clear the jam, it cancels the job. So if you are doing a 20 page job and it jams up on 18 - so sad.
Summary: This was a Gold Box Deal from Woot on Monday, September 10, 2012. Let me start off by saying the Canon D420 is an attractive machine and appears to be well built. The unit was packaged very well and arrived quickly. I think it may be an older style, the product manual is dated 2008. The trouble for me began with attempting to install the printer/scanner software on my Mac Mini, 2.26 Core 2 Duo running Lion 10.7.4.
Summary: This machine has no document feeder; is poorly designed. If you need to copy multiple pages, you're in big trouble! You must literally place one sheet at a time on the glass to copy, which eliminates multi-tasking. Who would make a copier that you must hand feed? I can boil an egg faster...at least I don't have to stand there and watch it cook. What a joke. I returned it! Shame on you, Canon, for creating this piece of...
Summary: I can't believe they don't include the USB cable that is required inorder to use the product. Thats like selling a car without wheels! Furthermore, network setup is not possible without purchase of a print server. As for performance, I won't know until I receive the USB cable and print server (another 5-10 day wait, argh!). Even if the performance of this printer/scanner is perfect, I will not change my star ratting because of the lack of the USB cable.
Summary: As a genra these Imageclass MF printers do a good job printing. Unfortunatly, the unit's scan, fax, scan to email, (everything outside of PC printing via usb to printer) is not a part of the Canon printer driver furnished. The MF scan, fax, PDF, is included in the box however provided by various SW providers outside of Canon. Try and find updated outside vender application products for scan, fax, scan to email, etc on the Canon website say in 64 bit.
Canon support and information is scant for OSX 10.7 Lion
Jocelyn M. Wood "joci", Amazon
4 October 2011
Summary: Printing from the built in Lion Preview hangs preview and textedit when attempting to print. Canon doesn't have a user support area, forum or any info about this huge bug, even with the current drivers. Apparently the previous drivers crashed the entire computer, so the AUG 30, 2011 drivers at least don't do that. The workaround is print thru chrome or adobe reader. and don't print through textedit.