Thank you Janice for using the forum.
Here is a link to the supported envelope types and sizes.
http://www.support.xerox.com/support/WC7755_WC7765_WC7775/support/en_US.html?objGUID=8486
I have searched the product knowledge base for suggestions and found the following:
How To Print Onto C4 or C5 Envelopes Using the Labels and Envelopes Tool from Microsoft Word
http://www.support.xerox.com/support/WC7755_WC7765_WC7775/support/en_US.html?objGUID=9150
There is also a solution "How to Load Enveloped in the Bypass Tray" that may help.
http://www.support.xerox.com/support/WC7755_WC7765_WC7775/support/en_US.html?objGUID=3299
If none of these help I would recommend that you contact support at 1-800-821-2797 for assistance.
I am trying to print an envelope from workcenter 7775 color. envelope is 10 x 13 and it is a word document. It keeps telling me resources not available and is asking for 81/2 x 11 even after I have set all my resources to 10 x 13 . tried plain, envelope, custom and nothing works . All is set for tray 5