After playing around with a bunch of different drivers, scanning over wifi, plugging the printer in via USB, still no luck. But for some reason after restarting my computers, I could only go up to 600 DPI. At first both my Mac and Windows PCs would let me scan at 1200 DPI using the OS native Scan apps. I faced a very similar issue with my Canon Pixma MG3620.
Kinda late reply here, but thought I'd share my experience.
(On another point, are there any TWAIN drivers for the Pixmas? I searched Canon's EU and US sites, and there seemed to be no trace of them on either site at all, aside from one older printer.) Is there something I've missed, or is this really so cumbersome and problematic to use 1200 dpi with the Pixmas? That was the only way to scan anything at 1200 dpi that I could find so far. The really odd solution was to turn off the "thumbnail preview" mode in the software. The only way I could find any possibility to use 1200 dpi was to run the "Scan Utility", switch it to "ScanGear", then switch it to "Advanced" and manually change the resolution to 1200 - the only part of the interface where the setting even appeared.Īnd then the software even blocked the scan, because "it would be over 100 MB" (I know it is, its size is the point!). Three mouse clicks, and the printer was ready to start scanning at 1200 dpi.īut with Canon's software, the maximum setting for any scan, anywhere, is 600 dpi. It was just a setting in HP's scanning software, or in their recent HP Scan Extended utility.
With the HPs, it was as easy as anything to scan at 1200 dpi. I've been configuring a Canon Pixma 7450, after years of using only HP's printers, and I'm puzzled by something.
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