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HP Recommended
HP Laser Jet 400 M401n
Microsoft Windows 10 (64-bit)

I am using Stamps.com with my Laser Jet 400.  For #10 size envelopes the left side of the envelope smears the return address and half of the Address.  The postage prints correctly.

1 REPLY 1
HP Recommended

Are you setting the paper type as envelope? If not, then the fuser will not get hot enough to bond the toner to the envelope. Can also be a sign of a failing fuser unit.

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