Network printer found and installed but reports "not connected"

[andrewteal]

Printer Canon MG5750 is located wirelessly, and so too is its driver. Everything looks good in Control Centre except the ink level report, which says the printer "may not be connected". Not surprisingly, neither printing nor scanning works! Annoyingly, the printer has previously worked, but erratically. I changed the network configuration(1) and thought I'd improved it(2). But now it's stopped altogether! Re-installed it several times. Any ideas of what to try/look for, please?
(1) TP-LINK AV Powerline Wi-Fi Extender TL-WPA4220
(2) Previously the printer was connected to the (distant) base router; I changed it to the Extender, like the computer (no network problems with computer).
* Release Linux Mint 17.2 Rafaela 32-bit

[pdc_2]

so Canon supply a how-to for connecting to wireless; this is from the UK site so for a 5650 but it suggests connections http://www.canon.co.uk/support/consumer ... ion_setup/

there can be two drivers for the Canon: those that Canon supply and gutenprint (the open-source);

if things are not good, if you delete any existing entries in your PRINTERS folder?

If you install the Canon drivers; if you don't already have them installed? You get them from here http://support-asia.canon-asia.com/cont ... 90202.html and if you click to download and SAVE, you get cnijfilter2-5.20-1-deb.tar.gz

in a terminal the commands would be

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cd Downloads

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tar -zxvf cnijfilter2-5.20-1-deb.tar.gz

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cd cnijfilter2-5.20-1-deb

the next command runs the install script and it will ask you to enter your sudo password etc .......... it will also look for where the printer is connected to ............

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./install.sh

....... that should set things up ............

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interestingly the 5750 appears on the list of AIRPRINT support .... https://support.apple.com/en-us/HT201311.... along with a host of other Canon printers ............. so on 17.04 ubuntu, this printer would seemingly not need drivers installed

https://www.phoronix.com/scan.php?page= ... Less-Print

AIRPRINT arrived in Ubuntu 17.04 but it may not arrive in Mint till next year as 18.2 still depends on 16.04LTS

[andrewteal]

Thank you for this help. Yes, it "sets it up" but not properly. My "Add printer" box now looks like this

Screenshot-New Printer.png

Following that through, the driver is identified, and a printer is added to the folder, but examining the properties of the printer still gives the information that it "may not be connected"
That IP address has been fixed. And the printer has been named and is defined as a printer in the router. Obviously the printer had already recognised and joined the network. But if I try to add it to my system as a New Printer by IP address, I'm told there is no printer at that address.
I tried this:
sudo nmap -sP -oG- 192.168.1.154 -Pn
Starting Nmap 6.40 ( http://nmap.org ) at 2017-06-28 16:11 BST
Nmap scan report for Canon-MG5750.lan (192.168.1.154)
Host is up.
Nmap done: 1 IP address (1 host up) scanned in 0.00 seconds
Permissions problem? But why? And how can I get round it?
system-config-printer as super-user is no different.