On my Envy 2450 my “lighter” setting keeps reverting back to “normal” before I start the copy

[RekoDog]

The light or dark setting on my Envy4520 keeps going back to normal after I start copying 

[Garp_senchau]

@RekoDog, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

Restart the Printer

• Turn off the printer. Unplug the power cord from the printer and the wall outlet.
• Wait for at least 60 seconds. Plug the power cord back in and turn on the printer.

Run HP Print and Scan Doctor:

• Download and run the HP Print and Scan Doctor tool. Follow the prompts to diagnose and fix common printing issues.

Update Printer Firmware

• Go to the HP Customer Support - Software and Driver Downloads page. Enter your printer model number and search for the latest firmware update. Follow the instructions to download and install the firmware update.

Use EWS for making changes, refer this guide to access the EWS: Use the HP printer Embedded Web Server (EWS) | HP® Support

Also, refer this guide for print settings: HP print settings guide | HP® Support

I hope these steps help resolve the issue

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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Regards,