Abstract

An arrangement for detecting a window area of a window-having mail item is for use in combination with a device of the type disclosed in U.S. Pat. No. 4,034,341 for detecting addressee's addresses described on the mail items successively fed thereto by determining information positions of the respective postal information pieces including the addressee's names and addresses, senders' names and addresses, and so forth. Responsive to a point signal produced by the device to determine a point on each mail item and to the light incident on the window area from the device and approximately regularly reflected therefrom to be sensed by an optical sensor of the arrangement, a window position detector of the arrangement produces a window position signal representative of the window position relative to the window-having mail item. From information positions produced by the device for all postal information pieces, selection is made with reference to the window position signal of the information positions visible through the window area.