Can't access HP4620 printer via Device Manager to scan
Ubuntu 12.04 won't recognize my HP Officejet 4620 printer attached via a USB port to my Acer Aspire One D270 netbook. I have to reinstall the printer driver from the HP Device Manager every time I turn the computer on. The Device Manager recognizes the printer every time, but for some reason, won't show the printer driver logo in the left hand column showing devices or the software functions in the main Device Manager window. It also retains and shows the HP4250 driver logo/device which I use in another office and have no trouble with.
It retains the 4620 fax driver and device logo but not the 4620 printer driver. When I add the driver, it prompts me for a new name which it suggests itself, e.g. 4620_2 or 4620_3, etc. When I run the HP Device Manager software I can't however see the printer in the Device Manager, even though I can see and print with the current and working driver for the printer in the print menu for each application (doc viewer, libre office, gedit, etc.). This means that I can't scan, because the 4620 fax software which I can access doesn't have a scan function. On the printer itself when I press "scan", I get the message "Computer is not found. To scan to a computer, make sure HP printer software is installed on the computer and configured."
I have several times been able to see the printer in the Device Manager and therefore scan, so I know the scan function works. The copy function works from the printer with no problems. The print function works fine wirelessly from my wife's computer in the other room.
Also, I have HPLIP 3.14.1 installed and every time I try to upgrade to 3.14.4, I get the error message in the terminal window saying "error: Failed to close either HP-Toolbox/
Can anyone help me fix this?
Thanks
Bob Thomson
Ottawa, Canada
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