OfficeJet 8710 envelope printing issues

[Paul8710]

Hello, I have an OfficeJet 8710 that has historically not had issues printing on #10 envelopes from MS Word. Over the last year or 2 machines in my house start having problems with printing triangles across the top and garbage "font" for the address. Same results with Office 2013 or Office 365 from both Windows 10 or 11. The printer firmware is current as is the printer drivers. Attached is a sample. I have tried printing old files saved from years past, and creating new Word docs to print the same. Printer prints fine in every other way I use it. Any suggestions? Thank you.scan of envelope

[Dragon-Fur]

@Paul8710 

Welcome to the HP Community --

Printer might be dirty -- the image does appear to show a "not flat" envelope.

Is the wrinkled appearance a result of the envelope having traveled through the printer?

Curious.

If the envelopes are not starting out "flat", try a different set of envelopes.

This document explains how to clean the printer:

HP OfficeJet 8700 printers - Paper Jam error

No Joy?

After a good cleaning of the rollers, perhaps try printing the envelope manually.

If still "sketchy" try printing on plain paper.

No Joy?

This is akin to the cleaning but more directed at the ink quality.

HP OfficeJet 8700 Printers - Black or Color Ink Not Printing, Other Print Quality Issues

Try a "Reset" / hard Restart

HP printer turns off unexpectedly or repeatedly

Step 2

Example - Word Document - Manual Envelope

Manual_DL_Envelope_Text_Box_Insert_4

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References / Resources

Example - Word > Mailings > Envelopes

Rabbits_and_Chickens_Test_Envelope_10_15

HP Printer Home Page - References and Resources

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HP OfficeJet Pro 8710 All-in-One Printer series  

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[Paul8710]

Thank you for the suggestions. I will try all your suggestions, it just might take me a day or two to get to it and reply. When printing on plain paper (20 lb, big box store variety), I have no issues. I will also look at the envelopes themselves and try some other type/brand. The envelopes are flat and smooth going into the paper tray. The printer is also printing that line of triangles across the top with no explanation, along with the "funky font". 

[Dragon-Fur]

@Paul8710 

You are welcome.

Let us know how it goes.

Thank you for participating in the HP Community --

People who own, use, and support HP devices.

Click Yes to say Thank You

Question / Concern Answered, Click my Post "Accept as Solution"