HOW DO I INCREASE THE SIZE O MY 7640 ALL IN ONE PRINTER

HOW CAN I INCREASE MY FONT SIZE IN MY HP 7640 PRINTER

Hello jrfirepup, and welcome to the HP Forums.
I see you are looking into printhead options.  This particular model of printer has built-in printheads, making them non-removable.
I would recommend removing the cartridges and performing a power reset.  Disconnect the power cord from the printer and the power outlet, then wait 60 seconds. After 60 seconds, plug the printer back in. Ensure you plug the printer directly to a wall outlet. Make sure to bypass any sort of surge protector or power bar.
I would also suggest this document on Ink Smears or Streaks.
Good luck and please let me know the results of your troubleshooting steps. Thank you for posting on the HP Forums.
Please click “Accept as Solution " if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks" for helping!
Jamieson
I work on behalf of HP
"Remember, I'm pulling for you, we're all in this together!" - Red Green.

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    Hello jrfirepup, and welcome to the HP Forums.
    I see you are looking into printhead options.  This particular model of printer has built-in printheads, making them non-removable.
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    Please click “Accept as Solution " if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the right to say “Thanks" for helping!
    Jamieson
    I work on behalf of HP
    "Remember, I'm pulling for you, we're all in this together!" - Red Green.

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