SU476767A3 - Document feeder - Google Patents

Description

(54) DEVICE FOR SUBMISSION OF DOCUMENTS

Kami 12-15, between which is installed guide 16. Then the documents fall into the tray 17.

The movable intermediate device inserted between documents is made in the form of a bracket 18, which is located opposite and above the feed roller 2 and prevents the documents lying on it from contacting with the roller 2. The device 1 has a flat downward sloping base 19 that is supported. frame 20 electrophotographic maschiny. The guide 11 leads to the table 21. The bracket 18 is supported on the rotating shaft 22 by the side bars 23. The base 19 has a notch 24 for passing the bars 23 through it. The shaft 22 with the bracket 18 is turned by a solenoid 25. The tray 17 contains bunkers 26 and 27 mounted on shaft 28. Shaft 28 is mounted in frame 20. Bunkers 26 and 27 are V-shaped and contain a base, front wall and sidewall. The opposite parts of the bases have cutouts 29 for the entry roller 2 to enter. The bottom of the trays contains a spring-loaded plate 30 with a segment portion 31 extending upward and a flat segment portion 32. A foam rubber is placed between the segment portion 32 and the frame 20. The curved segment portions 31 serve for slowing down and stopping documents, and the segment portion 32 for slowing and leveling the bottom edge of the returning documents.

The device is provided with a cover-covering tray 17 with a lid 33, to which the hollow of the inner guide 34 is turned, with locking elements 35 with latches 36 for limiting the position of the lid in a partially open position. The locking elements using the latches 36 guide the tray 17 in synchronization with the lid.

The control circuit of the operation of the solenoid 25 contains a photocell 37, a light source 38, a window 39, a working switch 40. Time relay 41 includes a circuit.

The guide 34 forms with the lid 33 an airbag 42 communicating with a source of low air pressure and having a series of openings 43 through which the compressed air comes out towards the surface of the returning documents passing from below to guide them to the tray. Ion generator 44 ionizes the air environment and neutralizes static electric charges on documents.

When the electrophotographic mask is started, the feed roller 2, the limiting rollers 3, 4, the intermediate rollers 5 and 6 and the conveyor 7 move and transport the document from tray 17 towards table 21 where the document is copied. At the completion of the copy cycle, the conveyor 7 is driven in the opposite direction. The sending fingers 8 intercept the leaving document, transfer it to the grip of the first return rollers 12, 13, which, in cooperation with the return guides 16 and the return rollers 14, 15, transfer the document to tray 17. When the returned document leaves the rollers 14, 15 The guide 34 together with the air flow ensures its entry into the tray 17, the document speed is damped by the segment part 31, and it is stopped by the segment part 32. The front edge of the documents is located on the bracket 18 out of contact with the roller 2. The last document FROM - UNDER the bracket 18 The signal from the photocell 37 switches on the circuit, actuates the solenoid 25 and lifts the bracket out from under the packs of documents returned to the tray 17. At the same time, photocell 37 is activated by time relay 41. After the last document is copied, the signal from the electrophotographic maschine triggers the time relay and, following a delay sufficient for the last document to be returned to tray 17, the time relay instantly turns on the circuit to set the bracket 18 on top smoked packs of returned documents. The document feeder can run as many cycles as additional copies of documents are required.

When the copy cycle or cycles are completed, the lid 33 is fully opened and the tray 17 is unloaded. When you open the lid, the solenoid 25 is triggered, but the lifting bracket 18 is activated.

In the event of a malfunction in the system, for example, the document is removed, the cover 33 is partially opened to the position corresponding to the recess occupied; e; 1 36 of the stopper elements 35.

The air pressure system can be lowered if necessary.

Subject invention

Claims (4)

1. A document feeder consisting of a document support device, including a document feeding tray, a transport device for moving documents into the tray and a movable intermediate device for supporting objects fed into the tray, characterized in that one forward from the tray, it contains a transport device for distributing documents from the tray, including the main conveyor adjacent to the neck of the tray and feeding the document One by one from the tray, and a fixed moving device inserted between the documents returned to the tray and the main conveyor, which serves to prevent the main conveyor from re-submitting the returned documents, as well as the adaptive device, I attach the second tray and, in cooperation with the latter, serve to return the documents to tray of dockumites so that when the intermediate device moves, the latter are fed forward by the main conveyor. 2. The device according to claim 1, wherein the device for supporting documents contains an inclined base including a system, providing a swinging movement of the covering device around the underside of the base tray; means limiting the opening movement of the latch: your 10H1 fixtures; the drive that opens the tray when the tray is opened is adapted; a clamping device for inserting documents into the worker when closing the covering device; equipped to provide swinging movement of the tray around the axis, coaxial with an axis (; fixture, and a locking device fixing the tray in a covered, closed and partly open position; a device for neutralizing static electricity charges on documents; a low pressure pneumatic device for sending documents to Lo3. Device according to n. 1, different so that, in order to be able to adjust the size of the tray and return the documents to the tray, the portable is equipped with two shelf-shaped elements that are moved in the horizontal direction, the sides of which extend to the mountains barn tray, ci-; ouie:; bi EG isi-eniHOM direction. 4. Device but n. 1, characterized in that n: 1 the opening of the op, its adaptation includes the air supply to the discharge chamber, which is located in the cover, has a branch: 1. cpui 2