[X4U] OT: Printing Envelopes

[Neil]

Hello, I'm trying to print an envelope.  I was able to get the format right
by using the template in MS Word.  Now, my printer keeps jamming on the
envelope.  I have an HP Deskjet 895c.  Does anybody here know what I might
be doing wrong?  Is there some trick to feeding the envelope so it doesn't
jam the printer?  I'm using the envelope slot on the paper feeder.  Thanks
in advance. 

Neil