| 摘要 |
The document feeder for printing equipment as designated here, is designed to draw certain types of document, one by one, from a pile or stock of these to a device which prints certain characters or devices. The pile of documents is constantly pushed towards a set of tractor wheels (10, 11) by the action of a continuous pressure device (7), while the document is passed along the corresponding guide (1) in the direction of the exit (13) between a set of selector wheels (14, 15, 15 min , 15 sec ) equipped with thoroidal rubber bands (16, 17). These are arranged in such a way that the roller (14) on one side of the guide turns in forward direction, while on the other side of the guide (1) another roller (15) with subsidiary rollers (15 min , 15 sec ) connected to it turns in the opposite direction, tending to pull the documents back, thus preventing any documents in contact with it from moving forward. Finally, documents are moved towards the end (13) of the guide (1) by a last wheel set (18) close to the exit point. |
