Envy 7640 Can't Find 'Scan Settings'

Question

I have an Envy 7640 E-All-In-One printer, S/N: TH4B1260YY, FPU: E4W43-64001. I am currently using OS X Yosemite, v10.10.1, with no outstanding updates on a Mac mini (Late 2014), 2.8 Ghz Intel Core i5 with 8 GB RAM. There are no error messages on the device or my computer.
I have installed the printer using the HP full-featured driver, dated 2014-09-01, version 12.39, provided by the HP Support website. The setup completed successfully, the printer is working great on the wireless network, and printer features work fine. When provided the option, I also installed HP Scan. The HP Scan standalone program opens, but does not detect any devices or scanners.
On a nearby Windows 7 machine, I was able to setup the scanner and use it from the software for that OS. Scanning directly from the device and emailing the scan, as well as webscan functions also work. I am certain the issue is NOT with the device scanner itself.
I followed the troubleshooting guide found here, and completed solution #1. I was not able to complete solution #2 because in my HP Utility I do not have a "Scan Settings" option. Here is a screen grab of my HP Utility view:
I also completed solution #3 (repair disk permissions) and solution #4 (check connectivity). Both completed without issue. I then performed solution #5 (reinstall the printer software), setup the printer again without issue for printer functionality, but still do not have a scan settings in HP Utility.
Please help!

Answer 1

Hi  
I understand you are having problems scanning to your Mac from the printer despite your best efforts. I'm sorry to hear that, but will certainly do all I can to help out
I would like to do a manual uninstall, follow the instructions below. I apologize in advanced this is not a fun task! I will try to make it easy to follow. Some of the files described in the following steps may not be found, if you can't find one of the files or folders on your computer, don't be alarmed, skip the step and move to the next step.
Move the files and/or folders to the trash, drag and drop
Macintosh HD/Applications//Hewlett-Packard folder
Macintosh HD/Library/Application Support/ - delete all files and folders regarding HP/Hewlett Packard
In Macintosh HD/Library/Caches - delete all files and folders regarding HP/Hewlett Packard
Macintosh HD/Library/Documentation/Help/ - delete all files and folders regarding HP/Hewlett Packard
Macintosh HD/Library/Frameworks/HPServicesInterface.framework
Macintosh HD/Library/Frameworks/HPSmartX.framework
Macintosh HD/Library/Image Capture/TWAIN Data Sources/HP Scan Pro
In Macintosh HD/Library/Image Capture/Scripts - delete all files and folders regarding HP/Hewlett Packard
In Macintosh HD/Library/Preferences - delete all files and folders regarding HP/Hewlett Packard
Move Macintosh HD/Library/Preferences/loginwindow.plist to the desktop. NOTE: Not removing the file loginwindow.plist during the manual uninstall could cause the uninstall to be unsuccessful.
In Macintosh HD/Library/Printer/hp - delete folder
In Macintosh HD/Library/StartupItems, drag the following folders to the trash, HP IO and HP Trap Monitor
In Macintosh HD/Users/USERNAME (this should have a symbol of a house next to it)/Library/Preferences, drag the following folders to the trash: *Any files beginning with com.apple.print, *Any files beginning with com.hp, *Any files beginning with Hewlett-Packard, *Any files beginning with HP or hp
In MacintoshHD/Users/USERNAME/Library/Printers, drag any All-in-One printers listed here into the trash.
Drag the HP icons from the Dock and drop it on an empty space on the desktop. The icon will disappear.
Close all open windows.
Restart.
Empty the Trash.
After logging in, Repair Disk Permissions
On the Dock, click  Applications, and then click Utilities.
Double-click Disk Utility.
Highlight your hard drive/partition on the left (by default this is "Macintosh HD").
Click the Repair Disk Permissions button at the bottom of the window.
Once the repair is complete, restart the computer .
Restart the computer.
Install the software we download earlier, once the software is successfully installed we can then delete the loginwindow.plist from the desktop.
Download and install the full feature software again; HP-ENVY-7640-series_v12.39.0.dmg
Restart both the computer and the printer and check the HP utility for the scan options again.
I hope this helps, please let me know if this resolves the issue or not. Thanks.
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Sunshyn2005 - I work on behalf of HP