HP 9010 Printer goes offline, won't show up on Airprint or Desktop

[HereinTo]

I bought an HP Officejet 9010 to replace an older HP printer.  But the 9010 regularly goes offline, as does not show up as an option on Airprint from mobile device, and on my desktops, it either doesn's show up or shows up but OFFLINE.  I am guessing that it is something to do with the sleep mode shutting off all accessibility.  The firmware is supposedly up to date.

[Rainbow23]

Hi @HereinTo
Welcome to HP Support Community. This is a great place to post questions find answers.
Thank you for posting your query, I will be glad to help you.

I see that you are facing printer offline issues with your HP Officejet 9010 printer when printing from Mac computer.

Please follow the steps listed below to reset printing systems and then add the printer.
1. Click the Apple menu, and then click System Preferences.
2. Click Printers & Scanners, Print & Scan, or Print & Fax.
3. Right-click (or Control + click) anywhere inside the Printers window, and then click Reset printing system.
4. Click Reset or OK.
Note: Once you click on reset any other printer added to this computer will also get deleted and needs to be added again.
5. If prompted, type your username and password, and then click OK. The printing system resets.
6. Turn off the printer, wait 5 seconds, and then turn on the printer.
7. Wait until the printer is idle and silent.
8. In the Printers window on the Mac, click the Add button.
9. Select your printer from the list, and then click Add.
It might take a few seconds before your printer displays in the Printers list.

You may also follow the video in this document

Let me know if this works.
Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

[HereinTo]

I’ve already added the printer. It shows up as a functional printer. But when I try to print to it from my desktop, it says it is offline, and if I try to use AirPrint, it won’t show up as an option. 

So, yes, I can re-add it as a printer. And it will work immediately afterward. But if I go to use it later or the next day, it will be offline. 

So, no, your suggestion doesn’t help.