JPH0480180A - Automatic document circulating feeding device - Google Patents

Abstract

PURPOSE:To facilitate changeover between an automatically circulating mode and SADF(one by one discharging mode), by providing the device so that a document loading base is adjustable in length and rotationally movable centering around the end part on the paper feed side, the position of a discharge part is adjustable in the transport direction, and a discharge stack part is under side the loading base at inclining the loading base. CONSTITUTION:A document loading base 4 can be rotationally moved centering around a shaft 4a on the end part of paper feed side, and a sub-base 4b is provided on the underside enable to be drawn out. A discharge stack part 6 is provided so as to be piled with the base 4 and elongated right side. A discharge part 15 is provided so as to be movable in position. A document is set on the loading base according to size, and at circulation mode, it is transferred from a reversal roller 10 to a contact glass 2a, and returned to the loading base 4 through a reversal roller 14, a discharge part 15, and a discharge roller 16. At SADF mode, the loading base 4 is inclined, the position of the discharge part 15 is adjusted, and the document is discharged on the discharge stack part 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic document circulation feeding device that can repeatedly circulate a plurality of documents according to the number of copies.

(Prior Art) In recent years, in response to the desire to automatically make multiple copies of multi-page documents and books, automatic document circulation feeders have been developed that can repeatedly circulate multiple pages of documents according to the number of copies to be made. It is now used by placing it on the contact glass of the machine.

As shown in FIG. 4, this automatic document circulation feeding device is arranged on the contact glass 2a of the copying machine 2, and inserts a plurality of documents from the document supply port 20 and sets them on the document table 21. The set originals are conveyed one by one to the bottom side of the device by the rotation of the reversing roller 22 on the right side of the figure, and are conveyed to the exposure position by the conveyor belt 23. After being exposed, the documents are discharged on the left side of the figure. The rotation of the roller 24 causes the document to be returned to the original document placement table 21, and this operation is sequentially repeated for the number of documents that have been set. Further, this series of operations is repeated a number of times equal to the set number of copies.

(Problem to be Solved by the Invention) However, in the conventional automatic document circulation feeding device described above, the document size and thickness that can be used depend on conditions such as the size of the device, mechanical constraints, and the frequency of use of the document by the user. There are many restrictions on the number of documents, and large-sized documents such as B4 or thin paper documents cannot be used in automatic circulation mode, so the document conveyance path is straight instead of circulating, as shown in Figure 4. , a mode in which a document loading table 25 and a paper ejection tray 26 are separately attached, and originals are set and ejected one by one, similar to a general copying machine (hereinafter referred to as 5ADF).
However, we are expanding the scope of use of the manuscript by making it available for use.

However, in this case, since the document placement table 25 and the paper ejection table 26 are attached, there is a drawback that they are spread out on both sides of the copying machine 2, which not only takes up space but also leads to an increase in cost.

Therefore, the present invention solves the above-mentioned conventional problems, and allows a wide range of originals, including large sizes, to be used in automatic circulation mode or 5ADF without taking up space or increasing costs. Our objective is to provide an automatic circulation feeding device.

(Means for Solving the Problems) The gist of the present invention is to include: a document placement table for placing a plurality of documents; a paper feed section that pulls out and feeds the documents one by one starting from the lowest document; Automatic document circulation comprising: a transport section that transports the original fed from the paper feed section to an exposure position; and an ejection section that ejects the exposed original sent from the transport section onto a document mounting table. In the feeding device, the length of the document placing table is adjustable and is rotatable within a predetermined range around the end on the paper feeding section side, and the position of the ejecting section is set according to the position of the document to be used. an ejection stack that can be freely adjusted in the conveyance direction of the original according to its size and receives the original ejected from the ejection section when the original document mounting table is used with the original table tilted at a predetermined angle; This is because the portion is provided on the lower surface side of the document placement table.

(Function) Therefore, when using the printer in the normal automatic circulation mode (the operation is the same as before), the size of the document tray and the position of the ejection section can be adjusted according to the document size, so multiple large-sized documents can be handled. Partial copying is now possible.

In addition, for thin paper or wrinkled originals that cannot be circulated or that you do not want to circulate, tilt the document loading table at a predetermined angle and set the originals one by one.The originals are pulled in from the paper feed section and exposed to light in the transport section. After that, it is discharged from the discharge section to the discharge stack section. In this case as well, large-sized originals can be used by adjusting the original placing table and the ejection section in the same way as in the automatic circulation mode described above.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, the automatic document circulation feeder 1 is a copying machine 2.
is arranged on the contact lug 2a. Directly below the document input slot 3, a document placement table 4 is placed at the left end (in the figure).
It is provided so as to be rotatable within a predetermined range in the direction indicated by the arrow around a shaft 4a on the paper feed section side (to be described later). An auxiliary table 4b is attached to the right end of the document table 4 in the figure so that it can be stored on the bottom side of the document table 4 and can be freely pulled out. It is provided to be movable in the vertical direction. Further, an ejection stack section 6 is provided on the right side of the document table 4 in the figure, on which a copied document is placed when used in the ASDF.

Then, the lowest H of the plurality of yKHs on the document table 4
The paper feed unit that separates sheets one by one from the document and feeds them to the bottom side of the device includes a document holding member 7 and a document setting claw 8.
, a pull-out roller 9 for pulling out the lowest document, and a reversing roller 10 for reversing the pulled-out document. a reversing belt 11 for causing the reversing roller 10 to follow the document;
A pull-out roller 12 is provided for guiding the original onto the contact glass 2a. Further, a conveyor belt 13 for conveying the original sent by the pull-out roller 12 to a predetermined exposure position is provided on the lower side of the apparatus, that is, at a position that lightly contacts the contact glass 2a of the copying machine 2. Passed over the contact glass 2a by driving the belt 13 (exposure completed)
A reversing roller 14 for reversing and discharging the original is provided on the right end side of the conveyor belt 13 in the figure. Then, the original conveyed by the reversing roller 14 is placed on the original placing table 4.
Alternatively, a discharge section 15 having a discharge roller 16 for discharging onto the discharge stack section 6 is provided at a position adjacent to the right side of the discharge stack section 6 in the figure. As shown in the figure, this ejecting section 15 can be moved in any direction indicated by the arrow B depending on the size of the document to be used.
It is possible to move in the direction.

The operation of the automatic document circulation feeder having the above configuration will be explained. As shown in FIG.
set on top. At this time, the positions of the document positioning member 5, the auxiliary table 4b, and the discharge section 15 are adjusted as appropriate by moving the document positioning member 5, the auxiliary table 4b, and the discharge section 15 according to the size of the document. Thereafter, at the same time as a start button (not shown) of the copying machine is pressed, the signal is input to the apparatus and the document feeding operation is sequentially started. That is, among the set originals, the lowest M original is pulled out one by one toward the reversing roller 10, and the pulled out originals pass through the pull-out roller 12 and are drawn under the conveyor belt 13 to a predetermined position. is transported to the exposure position. The original that has been exposed in this state is sent to the reversing roller 14 and reversed, and then is ejected (returned) from the ejecting section 15 onto the original placing table 4 via the ejecting roller 16. This operation is repeated, and the originals are exposed one by one and are stacked on top of the set originals on the original platen 4. A well-known partition plate (not shown) detects that all the set originals have gone through one cycle. After that, if the set number of copies is plural, the exposure operation is started again, and the above series of operations is repeated for the number of copies.

Next, we will explain how to copy one sheet at a time without circulating the original. As shown in the third @, the original document mounting table 4 is lifted and fixed at a predetermined angle of inclination as shown in the figure, and one original document is set thereon. At this time, depending on the size of the original, use the auxiliary stand 4.
Similarly to step 6, in which the document is set in a predetermined position by appropriately moving the document positioning member 5, the position of the discharge section 15 is also adjusted.

After the original is fed and exposed, the ejection stack section 6
It is discharged to the top. In this state, it is also possible to set a plurality of originals at a time and automatically feed and expose them one by one.

(Effects of the Invention) As described above, according to the present invention, the document placement table and the ejection stack section are arranged in a vertically overlapping state, and the document placement table is made rotatable around the paper feed section side, By tilting the document table and using the lower ejection stack, it is possible to copy large documents in automatic circulation mode, while also copying documents that do not want to be circulated, such as thin paper. , it is possible to copy originals with curls or wrinkles as 5ADF. In other words, it is possible to easily change to a 5ADF without attaching a space-consuming member such as a paper ejection stand as in the conventional case, and the range of use of original documents can be expanded.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of an automatic document circulation feeder showing an embodiment of the present invention, FIG. 2 is an explanatory view showing a state in which a normal document is circulated, and FIG. 3 is an explanatory view showing a state in which it is used as a 5ADF. , FIG. 4 is a schematic cross-sectional view showing a conventional automatic document feeder. 4... Document placement table, 4a... Axis, 4b... Auxiliary table, 6... Ejection stack section, 7.8.9. etc,・
... Paper feeding section, 13... Conveyance section (conveyance belt), 15.
...Discharge section. (1 other person)

Claims (1)

[Scope of Claims] A document mounting table for placing a plurality of documents, a paper feed section that pulls out and feeds the documents one by one starting from the lowest document, and exposes the documents fed from the document feed section. In an automatic document circulation feeder comprising a transport section for transporting an exposed original to a position, and a discharge section for ejecting an exposed original sent from the transport section onto a document mounting table, the document mounting table has a length thereof. is adjustable and is rotatable within a predetermined range around the end on the side of the paper feed section, and the position of the ejection section can be adjusted in the document transport direction depending on the size of the document to be used. In addition, when the document placing table is used with the document placing table tilted at a predetermined angle, an ejection stack section for receiving the originals ejected from the ejecting section is provided on the lower surface side of the document placing table. A document circulation feeding device characterized by: