HP Envy 7640 prints and scans but won't copy.

[SusanMeSo]

Printing from my computer seems to work fine.  Scanning to my computer also seems to work fine.  Copying does not (though the copy preview is fine)--the device generates blank page.  Some printing from the printer (e.g., reports) also come through blank.  The software/firmware appears to be up-to-date, and I've tried rebooting (unplugging, waiting 60 seconds, etc.) several times.  

[Kuroi_Kenshi]

Hi @SusanMeSo,

Welcome to the HP Support Community!

Thanks for reaching out!

We're thrilled to have the opportunity to assist you and provide a solution.

I understand your HP ENVY 7640 printing and scanning correctly but producing blank pages when copying or printing internal reports. Let’s go through a few checks.

Check Ink Levels and Cartridge Status

• On the printer control panel, open Setup > Ink Levels.
• Confirm both black and color cartridges show sufficient ink.
• Replace any cartridge showing low or empty.
• Ensure protective tape was fully removed from cartridges.
• Close the cartridge access door securely.

Run Printhead Cleaning

• On the control panel, open Setup > Printer Maintenance.
• Select Clean Printhead.
• Allow the cleaning cycle to complete.
• Print the test page when prompted.
• Repeat once if the page is still blank.

Check Cartridge Vent and Contacts
CAUTION: Avoid touching copper contacts directly.

• Open the cartridge access door.
• Remove the cartridges.
• Inspect the vent area on top for dried ink blockage.
• Clean copper contacts gently with a lint-free cloth if needed.
• Reinstall cartridges firmly.

Print a Print Quality Diagnostic Page

• Open Setup > Tools.
• Select Print Quality Report.
• Check for missing colors or blank sections.
• If blank, replace the affected cartridge.
• Run alignment if prompted.

Reset the Printer

• Turn the printer on.
• Disconnect the power cord from the rear.
• Unplug from the wall outlet.
• Wait 60 seconds.
• Reconnect and test the copy again.

Also refer to the following documents for further assistance.

https://support.hp.com/us-en/document/ish_6684771-6685129-16

https://support.hp.com/us-en/document/ish_2281791-2076363-16

I hope this helps.

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Best regards,