HP Office Jet 8625 and HP OfficeJet 7410xi All-in-One (a) difference (b) install on one desktop

Question

Given: 
 HP OfficeJet 7410xi All-in-One connected to 2 desktops (Visa and Win8.1 - 64-bit) via usb network hub (i.Connect).  Able to print from both computers.  Vista machine has HP Solution Center installed (able to import pictures from camera SD card, scan documents to PDF, etc). 
Q1:  Are print drivers and sw for 2 different HP printers (HP Office Jet 8625 and HP OfficeJet 7410xi All-in-One) compatible on the same computer? 
What is the installation procedure for the SW and driver for HP Office Jet 8625 and connect via Wireless to Visa and Win8.1 - 64-bit desktop such that the 7410xi All-in-One current  setup not impacted. 
Objective:  Ability to select the desired printer for printing,Reason:  the 7410 HP Solution Center has additional functions (scan to Pdf, import from camera SD card, etc) than the 8625 so need both.
Q2:  Does the HP Office Jet 8625 have similar HP Solution Center ... please provide link to the HP Solution Center SW for the the 8625.
Q3:  Where is the user guide manual for the HP Office Jet 8625?  The user guide manual refers to 8610, 8620, 8630.  Is  8620 same as HP Office Jet 8625; what's the difference?
Q4: Where is the text installation for the HP Office Jet 8625?  The only installation guide is a poster -- no words on the poster.  Please provide text based setup instructions  starting from unpacking out of the box.
Concern with users comments regarding the HP8625:  http://reviews.costco.com/2070/100116415/united-stationers-hp-officejet-pro-8625-e-all-in-one-printe...
Q5:  "..print envelopes, it thought it was "out of paper". Looks like the plastic "switch" that releases the tray springs is not properly designed...."  Please provide instructions to correct the "switch" that releases the tray springs.
Q6:  "..unable to print using the black ink cartridge if any of the other three color cartridges are empty..."  How to print black and white if the other color cartridges are empty or is this statement an HP design? 
Q7:  "...after 15 min goes into sleep mode and wont come out unless I unplug machine..."  How to turn off 'sleep mode'?  If printer enters 'sleep mode', how to turn on without having to unplug/plug printer?
Q8:  "..8625 went into powersave mode, then it was Printer OFFLINE...The problem was the HP8625 has a VERY POOR WEAK wireless system. "  How to prevent HP going into powersave mode then Offline without doing anything to my network setup?
Q9:  "... Windows 8.1 will not print via wireless to this printer  ... Download the latest drivers from the HP website for the 8620 series - not from the supplied CD. Then download the "HP Print and Scan Doctor" and run the program. It should render the printer functional with windows 8.1. .. The printer works out of the box with the "old" version of windows perfectly..."  Please provide a solution if this user's solution may cause other compatibility issues?

Answer 1

Hello @xandux,
I would like to assist you today with the answers to the questions that you have regarding the HP Officejet Pro 8625 e-All-in-One Printer.
Q1: The print drivers for the HP Officejet Pro 8625 e-All-in-One Printer and HP Officejet 7410xi All-in-One Printer are compatible on the same computer.
For the Officejet Pro 8625 you would first run the Wireless Setup Wizard on the front panel of the printer to connect it to the network.
How to Configure Wireless:
On the printer touch screen, touch the Right Arrow () to display the second navigation screen.
Touch the Setup icon (). The Setup Menu screen displays.
Touch Network, touch Wireless Setup Wizard, and then touch Continue.
Wait while the printer searches for routers that are within range of the printer. The Select Network Name menu displays.
Scroll down the list of network names until you find the name of your network.
Touch the name of your network, and then touch OK.
If prompted, enter the WEP or WPA key. This is case sensitive.
The printer will now connect to the network.
Once your printer is successfully connected to the network than you may run the installation of your printer.
The driver package for both Windows Vista and Windows 8.1 is the same. Should you want the latest drivers for the HP Officejet 8625 on both computers please click here to download the drivers. You will need to open that link on both the Vista and the 8 Computers. Once the website opens select the Download button on the top left. Once the download is complete the installation window will pop open. The onscreen prompts will walk you through the quick and easy install. You simply select that you are connecting a Wireless printer when prompted, the installer will search and find your printer and complete the install. You simply sit back and hit 'next' a few times. For additional install assistance and documentation please click here.
I can assure you that your HP Officejet 7410xi All-in-One Printer will not be affected by the installation of the HP Officejet Pro 8625 e-All-in-One Printer as they use completely different drivers.
Q2: The HP Officejet Pro 8625 e-All-in-One Printer uses the HP Printer Assistant Software rather than the HP Solutions Center Software. The Printer Assistant Software installs with the printer. Therefore, there is no separate link available for this. The Printer Assistant will load an icon on your computer that looks like this:
Once you click on that icon you will see a similar screen to this:
Q3: The User Guide for your HP Officejet Pro 8625 e-All-in-One Printer can be found here. It is for the Officejet Pro 8610/8620/and 8630 products as they are all within the same series.
The Officejet Pro 8625 is identical to the Officejet 8620. For specific specifications for just the Officejet Pro 8620 (8625) series printer please click here.
There are slight differences between the 8610, 8620, and 8630 products.
The Officejet Pro 8610:  Print speeds are slightly slow (19 ppm in black and 14.5 ppm in colour), letter size flatbed glass, no automatic duplex copies/scans. The specifications for this printer can be found here.
The Officejet Pro 8620 and Officejet Pro 8630: both models are identical with their specifications. The only difference is that the Officejet Pro 8630 comes with 2 paper trays. The specifications for the Officejet Pro 8630 can be found here.
Q4: For detailed setup and install instructions please refer to the two documents below. 
For out-of-box hardware setup instructions please click here.
For installation instructions for Windows Vista and Windows 8.1 please click here.
Q5: There is no switch that should have to be altered when printing envelopes. You simply load the envelope within the paper tray and select Print, just like any other printer. For instructions on how to properly load envelopes please click here. The only issue I have seen is that people aren't 'telling' the program on the computer that the printer is printing envelopes. This may cause a 'paper mismatch' error as your machine 'thinks' it's supposed to pull letter size paper and doesn't detect that as loaded in the tray. If there was a hardware defect with the switch when the HP Officejet 8625 first came out, we are not seeing those issues now so the switch issue must have been corrected.
Q6: Because of the Printhead design within these printers, there must be ink inside the printer to print. Therefore, if you run out of yellow ink, you must replace the yellow ink to continue using your printer. Once a cartridge is empty the printer goes into a 'depleted cartridge' error state. When this happens you are not able to use any features of the printer. The best course of action would be to keep an eye on your ink levels. When you start getting prompts that your cartridge is low, have a cartridge on hand for when the ink finally does run out. What I would recommend is if you're not planning on printing a lot in colour from your computer set the 'Black Ink Only' feature under the driver to ON. If you do not have this feature enabled, when you print from your computer certain print jobs are sent to your printer as 'image' files. If a document is sent to the printer as an 'image' file the printer will use colour ink to enrich the black on the document. This causes the colour ink to run out much faster than anticipated. If you turn Black Ink Only ON only black will be used for black documents. If you want to print a colour document you simply disable the Black Ink Only feature for that specific print job.
For more information regarding why this occurs and how to set Black Ink Only please click here.
Q7: Your machine is designed to go into sleep mode after about 10-15 minutes. This is not a design flaw. Ideally, once your printer enters sleep mode, if you need to print something you simply send the print command and the printer will wake up and respond for you. Occasionally sleep mode has issues. One issue for instance is when you have a networked printer. Sometimes the routers don't send the print command to the sleeping printer properly and that causes the printer not to 'wake up'. This can be corrected with altering settings on your router. The other issue may lie with a programming issue within the printer. The best course of action to avoid sleep mode issues would be to ensure that your printer is running the latest Firmware. The latest Firmware can be downloaded here.
Q8: Again, powersave mode is the same thing as sleep mode. You should have no issues allowing your wireless Officejet 8625 to go into a sleep mode. Once the printer is asleep you simply send a print job to your printer and the printer will 'wake up' and print for you. It is rare to see 'sleep mode' or 'powersave' issues. Always keep the Firmware up to date to avoid programming issues. 
Q9:  Microsoft has recently released a HotFix to correct wireless printing issues as they have found printing issues within the Windows 8 and Windows 8.1 Operating Systems. This issue is not specific to HP or the HP Officejet 8625. Rather, the issue seems to affect all wireless printers on the Windows 8 and Windows 8.1 Operating Systems. The HotFix can be found here. Once the website opens you simply select the button for HotFix Download Available. Follow any onscreen prompts to install the HotFix. There has been a lot of luck with running this fix.
I hope this information helps to clear up any issues you may have. Please let me know if you have any further questions or concerns. Thanks for reaching out to the HP Support Forums!
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