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Hi @HC12,
 
I’d like to help!
 
The following tips might help improve print quality issues-

Make sure the lighting is sufficient to clearly see the subject of your photo. Use the flash on your mobile device to improve the photo quality.

Use the HP sprocket app Autofix feature. On the print preview screen, tap Edit or the Edit icon , and then tap the Autofix wand  or . The app adjusts the photo automatically. Tap the Checkmark  to save the changes, and then tap the Print icon .

Use the HP sprocket app to adjust photo contrast and brightness. On the print preview screen, tap Edit or the Edit icon , and then tap the Adjustments icon . Adjust the brightness and contrast, tap the Checkmark  to save any changes, and then tap the Print icon .

Allow the Sprocket a few minutes to cool down between print jobs.
When the Sprocket becomes too warm, a cooling down message might display on the HP sprocket app. Allow the Sprocket to cool, and then tap OK to clear the message.

Store the photo paper in a cool, dry place and avoid contact with water. If water spills on the photo paper, wipe it away as soon as possible to prevent damaging the photo paper.

 To resolve the issue, let’s try a reset -

Turn on the printer.

Remove the paper cover by sliding it away from the output slot, and then set it aside.

Slide the paper cover

Remove the paper cover

Locate the Reset button.

Gently insert a straight pin into the reset button access point, and then press and hold the Reset button for 3 seconds.
The printer resets and turns off.

Turn on the printer.

Hope this helps! Keep me posted. 
 
And, Welcome to the HP Support Community. 
 
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