A machine used to finish a document and enclose it in an envelope in preparation for delivery.

a machine that automatically retrieves, collates, and stuffs mail pieces into an envelope

1. The device in an enveloper that inserts the documents into envelopes. 2. A feeder that adds inserts (enclosures) to document sheets. Also called an enclosure feeder.

(also alphanumeric video generator). A device for providing additional information, normally superimposed on the picture being displayed; this can range from one or two characters to full-screen alphanumeric text. Usually, such generators use the incoming video signal sync pulses as a reference point for the text insertion position, which means if the video signal is of poor quality, the text stability will also be of poor quality.

A device which adds teletext data to a television signal.