automatic document feed in scan mode

[Bones7859]

automatic document feed works in copy mode but not scan mode on envy photo 7855

[VikramTheGreat]

Hi @Bones7859,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

If your HP Envy Photo 7855's Automatic Document Feeder (ADF) works in copy mode but not in scan mode, it’s likely a software or configuration issue rather than a hardware fault since the ADF mechanism itself is functioning.
 

Here’s how to fix it:
1. Check Scan Source in HP Smart App or HP Scan

• Open the HP Smart app or HP Scan on your PC or phone.
• Select Scan > Source and make sure it’s set to "Document Feeder" (not "Flatbed").
• If the option is missing, reinstall the full HP driver/software package.

🔗HP Scanner not working - Troubleshooting scan issues | HP® Support

2. Reinstall HP Software

• Uninstall the current HP software and reinstall using the full driver package from HP’s site: 🔗HP ENVY Photo 7855 All-in-One Printer Software and Driver Downloads | HP® Support

3. Clean the ADF Rollers

Even if it works in copy mode, dust or misalignment can affect scan detection.

• Turn off the printer and unplug it.
• Open the ADF cover and clean the paper pick rollers and separator pad with a lint-free cloth and distilled water.
• Let it dry for 2 minutes before closing.

🔗HP printers - Automatic document feeder does not pick paper or feeds too many sheets | HP® Support

4. Use HP Smart’s Diagnose & Fix Tool

• Open HP Smart on Windows or macOS.
• Click the wrench icon (Windows) or printer dropdown (Mac).
• Run Diagnose & Fix to auto-correct scan issues.

I hope this helps.

Take care and have an amazing day!
 

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Regards,

VikramTheGreat