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Print speeds, as usual, are on the optimistic side. Canon claims 12.8ppm and 11.2ppm in best mode for black and colour pages, while we saw 5.45ppm and 4.05ppm in normal print mode, on 5-page test prints. Even on the 20-page job, a lot larger than is typical for home or office documents, the black page speed only went up to 5.77ppm, still not close to the specified figure.
Photo printing, on the other hand, is more than respectable, with a 15 x 10cm photo coming out in 58 seconds in best print mode and a standard mode print, via PictBridge, taking just 50 seconds.
The PIXMA iP4600 has automatic duplex, but there are a couple of things to mention here. First is the delay between printing first and second sides. To allow for ink drying, the machine halts for around five seconds at the end of printing the first side, so our 20-side document took 8mins 14secs to complete, while the single-sided version of the same job took 3mins 28secs, less than half the time.
The second thing is that duplex documents appear to be printed using the dye-based black ink; either that or they’re printed ‘light’ with the pigmented ink. Whichever it is, duplex pages are a lot greyer, almost looking draft in comparison with single-sided ones. These two factors considerably reduce the advantages of double-sided printing.
The quality of the single-sided prints we produced was very good. Black text is crisp and clean, with no visible feathering of the pigmented ink. Colour graphics are also good, with vibrant colours and better registration of black text over colour than we saw on the PIXMA iP4500.
Photos came out with lots of detail in both bright and shadowed areas and colours look natural and precise, despite the speed at which they’re printed.
The cartridges in this printer are not quite as widely available as those in its predecessor and the cheapest price we could find for them was from Canon’s own online shop. Doing the maths gives a black text cost of 2.57p and a colour page cost of 6.11p. These are both higher than from the PIXMA iP4500, the next model down Canon’s range, and are not particularly good against many of its rivals.
Overall, we’re not as impressed by the Canon PIXMA iP4600 as we were with its predecessor, the iP4500. The restriction on paper trays and the associated confusion in its firmware look to us like problems that have come to light since launch. Duplex print is slow and not as black as single-sided, making it only really suitable for internal documents.