My HP officejet 6000 E609n wireless does not print on envelopes.

Question

My HP officejet 6000 E609n wireless does not print on envelopes.  When I send an envelope address from the Microsoft Word envelope app, the envelope loads and then it  is send through the printer without printing on the envelope.  If instead of loading an envelope I load a plain sheet of 8x10.5 paper it will print the address as it should (side ways and on what would be an envelope).  I have had no problem printing envelope to my old DeskJet 930C with this Word envelope app.
I load the envelopes without the 8x10.5 paper and the paper guide moved over to the edge of the envelopes up which are against the right side of the load table as indicated on the tray guide.  

Answer 1

After many frustrating and fruitless attempts to solve this problem, including updating the drivers and following so many bits of advice from so many sources including contacting HP customer services by phone and email (who have not, so far, shown the courtesy of acknowledging my enquiry), I seem to have overcome the problem by cutting a piece of A4 paper along its length to a width, which when added to the envelope’s height, equals the width of an A4 sheet. For example, I use DL envelopes which have a nominal width of 110mm so the width of the piece of paper cut from A4 (which is 210 mm wide) is 100 mm. This strip is then temporarily attached to the envelope by piece of low tack tape (such as masking tape) running along and joining the paper and the envelope tabs. I feed this assembly of strip and envelope into the printer in the default position, (i.e. the envelope on the right hand side of the tray, face down with the sealing tabs on the left). The printer seems to treat this assembly as a piece of A4 and prints the address etc on the envelope correctly. The envelope is then easily detached from the tape without damage and I have found that this works many times as sufficient tack remains on the tape. I know this sounds a little complicated but it soon becomes a simple task.
The HP Officejet 6000 printer has previously worked splendidly, printing envelopes from the Word 2007 envelopes function running on XP but has only recently malfunctioned since changing to Windows 7. For the record, I have also tried to print envelopes using the Word compatibility mode without success.