Canon MX340 wireless printer no longer connecting over wireless and coming up with "a communications error has occured"

I have a Canon MX340 wireless printer and have only recently started having trouble printing over the wireless connection. No settings have changed on my MacBook Pro, the printer, the router or the wifi connection and it is strange how it has just stopped working. I have tried things like restarting the laptop and removing the printer from the laptop and re-adding it. It sometimes seems to work for maybe one print but then it goes back to saying "a communications error has occured", when I try to print again.
Any help would be great. Thanks

I had the same MX340 problem. My printer was working fine over WiFi connection to my Airport Extreme for years and then suddenly, about a month ago, it stopped printing after the first print job. I can print once and then I have to power-cycle the printer to get it to print another time and then I have to repeat the power-cycle.
The printer seems to be "forgotten" by the network or lose its connection after the first print job.
On my MacBookPro 10.6.8 I get the error code 300...yadayadayad... On my iMac 10.5.8 it just says :communications error".
HERE IS THE FIX - I got it off this link - http://www.techsurvivors.net/forums/index.php?showtopic=24681
You have to connect to the MX340 using the printer cable that came with the printer (or any USB printer cable) and set up a hardwired USB printer queue. Then print a couple of print jobs - I use TextEdit and type in "1234". Then try the same thing but select your WiFi print queue - I just type another line on the same sheet of paper with TextEdit.
The WiFi connection should work again. I did this a few more times and then disconnected the USB cable and now it continues to work without the USB print queue being used. I can also print to the WiFi queue with my iMac.
If you still have problems I suggest you set up the printer again on the WiFi router using the "print cable connection" method. Here's a link to a webpage someone kindly provided instructions for the process:
http://machinesaredigging.com/2011/04/08/how-to-install-the-printer-canon-mx340- wi-fi-without-the-cd-on-mac/
Good luck!

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I cannot print to my wireless Canon printer. A communication error has occurred.

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Perhaps one of the printer drivers is corrupt. Go to http://www.canon.com.au/en-AU/Support-Services/Drivers-and-Downloads (or other country download).

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I've wrestled with this off and on with this printer ever since I got it. Just checked and my signal was at 44%. Guess that could be it!... guess I'll do some relocating of the router, boost the signal or run an ethernet line. Never though the signal being that low would cause this many print errors.
I thought is was just happening when the printer would go to sleep... or not used for a few days.
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E-roq
I work on behalf of HP.
Please click Accept as Solution if you feel my post solved your issue, it will help others find the solution.
Click Kudos Thumbs Up on the right to say “Thanks” for helping!

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I understand you are having issues with your HP Officejet 7310xi connecting and staying on your network. Going through all of this is making you feel much like this;
By the end of this I want you feeling more like this;
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Hi!
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If you need more assistance just let me know.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Gemini02
I work on behalf of HP

Canon MX340 wireless printer no longer connecting over wireless and coming up with "a communications error has occured"

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