A google search for the term "definefont" on HP's website seems to indicate that this might be a postscript error. As you read the thread, it might offer some insights as to what might be happening. This thread is for an HP printer in a MAC environment. Other than that, I was going to suggest the normal procedure of running disk utility and to repair permissions.
Hope that helps
Ironically, the documents print OK on the 10 year old HP laserwriter!!! but not on the Canon or Ricoh....
I have selected entire doc and converted to times and also tried Arial, same issue - then I removed the bullet points in the word file...it prints.
No solution, but I now appreciate the issue...