How do I change the scan resolution on my HP Officejet 4620?

My printer scans images at 200 dpi but I want to change it to scan at 300 dpi to get a better quality image, but I can't figure out how to change the settings for the resolution. I have a Mac  OS X 10.8.5 Help!

Welcome to the HP Forums Roberta831,
I read your post, which indicates that you are unable to change the dpi for scanning.
I can help you with this.
Check the driver name that is installed for the printer. The Airprint driver might be installed instead of the Printer's driver. (usually defaults to Airprint)
Click the Apple menu and then click System Preferences. Click Printers & Scanners, highlight the printer name on the left side and on the right side of the screen should show the name.
If the printer name shows Airprint then that is the Apple drivers, delete it and add the printer name back in from the list. Click the - sign to delete the driver and then click the + sign to add the driver, might have to click the drop down to select the printer's name to add it in.
Did you download and install the Full Feature Software for 10.9?
HP Officejet 4620 e-All-in-One Printer series Full Feature Software and Drivers - OS X 10.9 Maverick...
What scanning software are you using?
Try scanning with the Apple Software to see if you have the same results.
How to Scan: OS X v10.9.
Please provide in detail the results if you are still having issues.
Have a wonderful day!
Thank You.
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

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    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!
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    I work on behalf of HP

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