JPS6164661A - Automatic document feeder - Google Patents

Abstract

PURPOSE:To adapt the paper discharge pan to the document of any size in automatic document feeder, by providing more than two types of auxiliary paper receiving members having different function and shape replaceably and displaceably in the paper discharge pan. CONSTITUTION:An automatic document feeder 2 is fixed tiltably through a hinge member onto the upper face of copy machine 1. A paper discharge pan 13 for receiving the discharged document is provided with a paper receiving face 14 having such inclination angle as to receive the document reliably with correspondence to the discharging speed of document and edge frames 15 at the opposite ends in lateral direction of said face 14. An auxiliary paper receiving member 16 is formed by bending linear material (a) such as metal wire. More than two types of auxiliary paper receiving members 16 having different function and/or shape are provided replaceably and displaceably on the paper discharge pan 13. Furthermore, said member 16 is provided with function of document fall down preventer, function to extend the paper receiving face 14 of paper discharge pan 13 and function as a guide member for passing the document to an adjoining machinery such as a sorter.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic document feeder equipped with a paper ejection tray for receiving ejected originals.

[Conventional technology]

In general, an automatic document feeder feeds the document on the document supply table using a paper feed roller, separates the document one by one using nine double-feed prevention rollers, and passes the document through two paper guides to the glass surface of the copying machine body and runs along this document. After being introduced between the sheet and the conveyor belt and exposed to light on the glass surface, the sheet is sent out to the sheet discharge tray through the discharge port by the movement of the II conveyor belt. Recent automatic document feeders handle small documents (for example, B5 size) and large documents (for example, A2 size) according to the performance of the copying machine.
Since it has become possible to supply originals of different sizes, it has become necessary to ensure that the paper ejection tray can also receive originals of different sizes. However, conventional paper ejection trays did not have a function that ensured that documents of all sizes could be reliably received, which was a major obstacle to improving the performance of automatic document feeders.

In addition, when an automatic document feeder processes a large number of documents through an output tray and an adjacent device such as a sorter, it requires a guide member that connects to the adjacent device. I couldn't expect such functionality at all.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an automatic document feeder with a paper discharge tray that can easily and accurately handle documents of all sizes.

[Structure of the invention]

In order to achieve the above object, the present invention provides an automatic document feeder equipped with a paper ejection tray for receiving ejected originals, in which two or more types of paper receiving aids having different functions and/or shapes are provided on the paper ejection tray. The gist is that the members are provided so that they can be replaced or displaced.

[Embodiment] Next, the present invention will be described using an automatic document feeder shown in the accompanying drawings as an example.

1 is the copying machine main body, 2 is a hinge member (
(not shown) is an automatic document feeder that can be freely raised and lowered. As shown in FIG. 7, the automatic document feeder 2 sends out a document 4 placed on a document supply table 3 by a paper feed roller 5, separates one document by a double feed prevention roller 6, and introduces it into a direction change guide 7. do. A nipping roller 8a presses the original 4 across the original passage within the direction change guide 7;
Conveying force is applied by 8b.

It is introduced between the glass surface 9 of the copying machine main body 1 and the conveyor belt 10 running along the glass surface 9, and is supplied onto the glass surface 9. The document is stopped on this glass surface 9 for exposure. This stopping is performed by protrusion of a stopper 11 provided at the end of the glass surface 9. Upon or before the end of exposure, the stopper 11 retracts from the glass surface, the conveyor belt 10 restarts, and the original is transferred to the paper ejection roller 12a.

The paper is sent out to the paper discharge tray 13 through L2b. The paper ejection tray 13 includes a paper receiving surface 14 having an inclined angle that can reliably receive the ejected original in accordance with the ejecting speed, and edge frames 15 at both ends of the paper receiving surface 14 in the width direction. 1
Reference numeral 6 denotes a paper receiving auxiliary member attached to the flattened top 14a of the paper discharge tray 13, and the paper receiving auxiliary member 16 is formed by bending a filamentous material a such as a wire. are shown in FIGS. 2, 3, and 6, respectively.

The paper receiving auxiliary member 16 in FIG. 2 is made by bending the filament a like a double pulse waveform, slightly extending the portion corresponding to the trough, and folding it at right angles to form an L-shaped part. At the same time, both ends are bent outward to form locking portions c and c. In the case of the paper receiving auxiliary member 16, as shown in the first figure, the paper receiving tray 13
used for. I! I] First, engage the locking parts c, c at both ends with a pair of locking holes 17, 17 provided on the inner surface of the edge frame 15 of the top 14a of the paper ejection tray 13, and eject the L-shaped part. paper plate 13
It is fitted into a recessed notch 18 provided in the center of the top portion 14a. In this state of use, the paper receiving surface 14 of the paper ejection tray 130 is extended, but when the paper receiving auxiliary member 16 is rotated 1180° about the locking portions C at both ends, the above-mentioned shape portion is extended. It rises from the paper receiving surface 14 and functions as a stopper to prevent the document from falling.4 The paper receiving auxiliary member 16 shown in FIG. A locking part c, which is folded and further folded with one end facing forward in the horizontal direction and the other end facing backward in the horizontal direction with the tip of the U-shaped part raised at a certain inclination angle;
c' is formed. In this case, when using the paper ejection tray 13, the locking portions c and c' at both ends are connected to the top 14 of the paper ejection tray 13.
They are engaged with a pair of locking holes 19° and 19 provided near the center of a, and the shapes of these locking portions c and c' are as shown in FIGS. 4 and 5 when they are locked in the locking holes 19. Maintain the angle of the U-shaped part as shown.

Also, in the case of this paper receiving auxiliary member 16, which is effective in locking the paper without being twisted, the paper receiving surface 1 of the paper discharge tray 13 is
4, but is suitable for medium-sized documents.

The paper receiving auxiliary member 16 in FIG. 6 is made by bending the filament a like the knee pulse waveform as in the case shown in the second figure, and folding the portion corresponding to the crest into a shape toward the side, and attaching it to the hook. A shaped portion d is formed, and two ends are bent outward to form locking portions c, c. In this case, when using the paper discharge tray 13, the locking portions c, c at both ends of the paper discharge tray 13 are engaged with a pair of locking holes 17, 17 provided on the inner surface of the edge frame 15 of the top portion 14a of the paper discharge tray 13. . This is the same as in the case of the paper receiving auxiliary member 16 shown in the second figure, but by providing the hook-shaped portion d, it has a function as a guide member for transferring documents to an adjacent device such as a sorter. Of course, it also has the function of extending the paper receiving surface 14 of the paper discharge tray 13.

Note that the paper receiving auxiliary member 16 of the above embodiment has only three typical types with different functions and shapes.
It has at least one function for delivery to an adjacent device, and it goes without saying that it can be modified in any way without departing from the scope of the present invention.

Furthermore, this invention is not limited to the paper ejection tray of an automatic document feeder.
It can also be fully applied to other devices that handle paper.

〔Effect of the invention〕

As described above, the present invention relates to an automatic document feeder equipped with a paper ejection tray for receiving ejected originals.

Since the paper ejection tray is provided with two or more types of paper receiving auxiliary members having different functions and/or shapes that can be exchanged or displaced, the paper ejection tray can be used to accommodate all the different sizes of paper being ejected. It is possible to easily and accurately correspond to the manuscript. Therefore,
This greatly contributes to improving the performance of automatic document feeders, which can now transport documents from small documents to documents as large as A2 size.

In addition, in the present invention, when the paper receiving auxiliary member is formed by bending a filament, it can be easily formed and provided at low cost, and does not become taut during storage (and can be easily replaced).

Furthermore, if you install multiple paper receiving auxiliary members that have at least one of the following functions: preventing documents from falling, extending the document ejection tray, and transferring ejected documents to adjacent devices, this can be adjusted according to the user's requirements. The above effects can be further enhanced.

Yet again. A pair of locking holes are provided on the top surface of the paper ejection tray to match the size of the paper receiving auxiliary member in the width direction, and both ends of the auxiliary member are locked.
If one or more paper receiving auxiliary members are provided, the range of application of the single paper receiving auxiliary member will be further increased.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a perspective view of the overall appearance, Fig. 2 is a perspective view showing a first example of the paper receiving auxiliary member, and Fig. 3 is a second example of the paper receiving auxiliary member. FIG. 4 is a plan view showing the relationship between the second example of the paper receiving auxiliary member and the locking hole of the paper discharge tray, FIG. 5 is a cross-sectional view of the same, and FIG. 6 is the paper receiving auxiliary member. FIG. 7 is a perspective view showing a third example of the auxiliary member, and a schematic cross-sectional view showing the internal structure of the automatic document feeder. 1 - Copying machine main body 2 - Automatic document feeder 13 - Paper ejection tray 14 - Paper receiving surface 16 - Paper receiving auxiliary member 1
7. LL - Locking hole 18 - Recessed part a - Linear part b - L-shaped part c, c' - Locking part d - Hook-shaped part Patent Applicant Konishiroku Photo Industry Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 5 Figure 6 Figure 7

Claims (4)

[Claims] (1) In an automatic document feeder equipped with a paper ejection tray for receiving ejected originals, two or more types of paper receiving auxiliary members having different functions and/or shapes are provided on the paper ejection tray so as to be replaceable or displaceable. An automatic document feeder characterized by: (2) The automatic document feeder according to claim 1, wherein the paper receiving auxiliary member is formed by bending a filament. (3) The paper receiving auxiliary member has at least one of the functions of preventing documents from falling, extending a paper ejection tray, and transferring them to an adjacent device. Automatic document feeder. (4) At least two pairs of locking holes are provided on the upper surface of the paper discharge tray to match the size of the paper receiving auxiliary member in the width direction and lock both ends thereof. The automatic document feeder described in paragraph 3.