09-17-2015 09:49 PM - edited 09-17-2015 10:04 PM
I have installed an IP8720 printer and it's connected by wifi. I am able to print to it without a problem from Win7 PC #1. I installed the drivers on a 2nd Win7 PC and when I try to print from PC #2, printing starts and a portion of the first page of the document is printed, but the printing never completes. I can connect to the IP address of the printer and and view the setup and status info from both PC#1 and PC#2.
PC #1 is connected using a wired LAN. PC #2 connects to the network over wifi.
I am also able to print over the network from an iPhone without a problem.
These are the things that I've tried:
1. I upgraded the printer firmware to V1.06
2. I have reinitialized the printer and reconnected it to the network.
3. I have deleted and reinstalled the printer on PC #2 several times.
4. I have tried updating the driver on PC #2 (it was already up to date).
I can't figure out any other ways to diagnose or fix this problem. I would appreciate any suggestions about how to proceed.
09-19-2015 10:49 AM
The issue may be related to a firewall or anti-spyware utility on the computer. Temporarily disable this software to see if you will be able to print consistently from the second computer.
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09-19-2015 03:00 PM
Okay, I think I figured out the problem. PC #1 is a wired LAN connection. PC #2 is a laptop that connects via wifi. It appears that the wireless connection between the router and printer is adequate, but the wireless connection between PC #2 and the router is not up to par.
When I run internet speed check on PC #2 the speed appears to be very acceptable. Apparently, that's not good enough to communicate with the printer. When I moved PC #2 close to the router, printing was successful.
I am very surprised that the protocol that Canon is using between the PC and the router isn't robust enough to deal with a less-than-perfect connection. After all, this connection is adequate for web browsing, streaming video, downloading files and all other general web functions and those funtions are out in the external world. I would expect that a device on the LAN would be fine. Normal internet packet protocols are able to send data much faster than a printer can print. With TCP, if packets are slow arriving, they can be retransmitted. I can't imagine any reason that a printer should crap out because the connection is not perfect.
Seems as though Canon needs to work on its wireless software.