Mobile Printing & Cloud Printing

Hi,

I'm having a problem with the ePrint function.  My printer is connected via Ethernet to my router, and everything works correctly.  I can print through my home network whether my device is connected via Ethernet or WiFi, as expected – no problems there.  The ePrint print-by-email function also works, but ONLY intermittently – and that's my problem.  After the printer has sat idle for 60 minutes (per settings), it goes into what I assume is a "sleep" state – the power button's light blinks, and the text-LCD shuts off its backlight (but the info is still visible – like a landline phone's caller-id screen).  The printer will remain in this "sleep" state indefinitely unless otherwise acted upon – as expected.  If I send print jobs thru my home network, the printer immediately "wakes up" and completes the job.  However, if I send a print job via email (ePrint), and the printer has been "sleeping", it will NOT "wake up" from its slumber.  If I click a button on the keypad to wake it up, the job still does not come thru.  BUT, if I turn the printer off, and then turn it right back on, the ePrint job WILL come thru within a minute or two, even if I conduct this "restart" multiple hours after emailing the file, which tells me the job is sitting on the ePrint server & waiting for something.  I assume that means the printer is failing to periodically check-in with the ePrint server?  I'm confused, because I have the energy saver setting "delay when ports are active" set to enabled.  Please advise 🙂

Further Context that might help:  My router assigns the printer a Static IP so I can easily access the web config menus.  But, I noticed this problem also happened when I left everything up to DHCP, which my router re-leases every 24 hours. 

Thanks for reading, and have a great rest of your day!