HP 4750 Printer connected via wifi but is shown offline in windows 7

Hi,
I am hoping someone can help me. My 4750 HP priniter is connected to my network. I ran the wireless network test report from the printer and it stated no problems found. It shows everything is connected. When I attempt to print from my laptop it shows that the priniter is offline.
It seems like the only way to resolve is to delete and reset the wireless settings again. The last time I did this, the printer worked wirelessly for a short period of time. I do not want to have to reset the wireless settings everytime I want to print. Does anyone know how to fix this problem?
Hp 4750
windows 7 64bit
Linksys E2500 router

It sounds like the printer may be having an issue with keeping the network connection in standby mode since resetting the printer's network settings works.
Setting a static IP address is a step I recommend for any printer. By default, printers use DHCP (automatic IP settings) for the network and they can lose this information in standby mode and not send a new DHCP request. Setting a static IP address typically resolves this issue.
Step five of this document from HP will help set a static IP address.
Let me know what happens.
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