C-fold return postcard mailer

Claim 1

A mailer-type business form intermediate comprising: a quadrate sheet of paper having first and second faces, substantially parallel top and bottom edges, and substantially parallel first and second side edges substantially perpendicular to said top and bottom edges; at least first and second fold lines substantially parallel to said top and bottom edges, and defining said sheet into at least first, second and third panels, said first panel disposed between said top edge and said first fold line, and said second panel disposed between said first and third panels; first and second lines of weakness extending substantially parallel to said side edges and adjacent thereto, and defining first and second tear-off strips; adhesive patterns disposed in said first and second tear-off strips for holding said panels together when said sheet is folded about said fold lines; a postcard defined by postcard-defining lines of weakness formed in one of said second and third panels and comprising first and second faces corresponding to said sheet first and second faces; said postcard having reply address indicia imaged on said second face thereof, and having an area for outgoing address indicia on said first face thereof; and a window formed in said first panel in alignment with said outgoing address indicia area when said panels are folded about said fold lines.