Hey there! @alvitale, Thanks for stopping by HP forums!
I understand you need to know how to copy photo slides from your printer.
Don't worry I will try to help you out.
Did you make any changes to your printer?
Are you trying to scan negatives from your printer?
If you are trying to scan negatives your printer it will not support negative scanning. This particular option is available only on HP Photosmart printers.
However, you can try to copy the photo slides from the scanner glass on your printer.
Keep the photo slide face down on the scanner glass and you should be able to scan it.
Hope this answers your query!
Take Care! 🙂
A4Apollo
I am an HP Employee