JP2002326758A - Automatic document feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic document feeding device in which a delivered document can be easily taken out without being damaged. SOLUTION: In this automatic document feeding device 1 having a document delivering surface 7 on which the document 2b is delivered, a document prohibiting means 4 is provided on the document delivering surface to be perpendicular to the delivering surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic document feeder provided in an image forming apparatus such as a copying machine and a printer.

[0002]

2. Description of the Related Art Conventionally, in an automatic document feeder of an image forming apparatus, for example, a document 2a placed on a document placing surface 6 as shown in FIG. Is done.

[0003]

However, the above-mentioned conventional automatic document feeder has the following problems. 1. When taking out a document ejected from the automatic document feeder, a hand must be put under the document placing surface to take out the document.
However, in practice, the ejected originals (3 in FIG. 5) are often not aligned, so it is difficult to remove the ejected originals. In particular, when the number of ejected documents is large, the ejected documents are not aligned, and are scattered, making it very difficult to take out the documents. 2. As described above, since the leading ends of the discharged originals are often not aligned, the operation of taking out the discharged originals becomes complicated, and the originals are sometimes damaged.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide an automatic document feeder capable of easily taking out a discharged document without damaging it.

[0005]

According to a first aspect of the present invention, there is provided an automatic document feeder having a document discharge surface from which a document is discharged. The document blocking means is provided vertically.

According to a second aspect of the present invention, in the first aspect of the present invention, the height of the document blocking means is set higher than a maximum stacking height.

According to a third aspect of the present invention, in the first aspect of the invention, the document blocking means is detachably provided.

According to a fourth aspect of the present invention, in the first aspect of the invention, the document blocking means is movably provided in a direction perpendicular to the document discharge surface.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

<First Embodiment> FIG. 1 is a side view of an automatic document feeder according to a first embodiment of the present invention, and FIG. 2 is a plan view of the automatic document feeder.

In the automatic document feeder 1 according to the present embodiment, 2a is a document before feeding, 2b is a document discharged through the inside of the automatic document feeder 1, 3 is a leading end of the document 2b, Denotes a document blocking means, and 5 denotes a conveying direction of the document 2a. Reference numeral 6 denotes a document placing surface, 7 denotes a document discharge surface, 20 denotes a document discharge unit, and arrow A denotes a document discharge direction.

Next, FIG. 2 will be described.

In FIG. 2, reference numeral 8 denotes a regulating member for regulating the width direction (direction of arrow 9) of the document 2a, and reference numeral 10 denotes a document detecting member. Is detected. That is, manuscript 2
By detecting the width and length of a, it is possible to identify the size (for example, A4, B5, etc.) of the fixed size original 2a by feeding the original 2a.

Thus, in this embodiment, the leading end 3 of the discharged original 2b is aligned by the original blocking means 4 on the original discharge surface 7. Therefore, the discharged original 2b can be taken out in a uniform form.

The document blocking means 4 is provided at a plurality of positions on the document discharge surface 7 for each document size, and the document size is determined in advance as described above. It protrudes from the discharge surface 7 by driving means (not shown). Here, the height L of the document blocking means 4 is set higher than the maximum stacking height of the automatic document feeder 1, and the documents 2 b discharged in one document feed job are all aligned at the leading end 3. Will be.

In this embodiment, the document blocking means 4 is provided movably in the vertical direction, but the document blocking means may be provided detachably. Since the document blocking means is manually attached and detached, it takes time and effort, but the cost of the automatic document feeder can be reduced. This is also effective when the document size is always the same (for example, A4).

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a side view of the automatic document feeder according to Embodiment 2 of the present invention,
FIG. 4 is a plan view of the automatic document feeder. In these drawings, the same elements as those shown in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof will be omitted.

In the present embodiment, as shown in FIG. 3, a part of the document placing surface 6 is made rotatable to be a document blocking means 13. At this time, when the document blocking means 13 is not used, the hole 14 is inserted so that it can be stored in the document placing surface 6.
(See FIG. 4).

In addition to the above, any type of document blocking means may be used as long as it is provided perpendicular to the document discharge surface so as to be aligned in the discharge direction of each size.

[0020]

As is apparent from the above description, according to the present invention, in an automatic document feeder having a document discharge surface from which a document is discharged, the document is placed on the document discharge surface perpendicular to the discharge surface. Since the blocking means is provided, it is possible to obtain an effect that the discharged document can be easily taken out without damaging it.

[Brief description of the drawings]

FIG. 1 is a side view of an automatic document feeder according to Embodiment 1 of the present invention.

FIG. 2 is a plan view of the automatic document feeder according to the first embodiment of the present invention.

FIG. 3 is a side view of an automatic document feeder according to Embodiment 2 of the present invention.

FIG. 4 is a plan view of an automatic document feeder according to Embodiment 2 of the present invention.

FIG. 5 is a side view of a conventional automatic document feeder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic document feeder 2a, 2b Document 4 Document blocking means 6 Document placing surface 7 Document discharge surface 10 Document detecting member 13 Document blocking means 20 Document discharging section L Height of document blocking means

Claims (4)

[Claims] 1. An automatic document feeder having a document discharge surface from which a document is discharged, wherein an original blocking means is provided on the document discharge surface perpendicular to the discharge surface. 2. The automatic document feeder according to claim 1, wherein a height of said document blocking means is set higher than a maximum stacking height. 3. The automatic document feeder according to claim 1, wherein said document blocking means is detachably provided. 4. The apparatus according to claim 1, wherein said document blocking means is movably provided in a direction perpendicular to said document discharge surface.
Automatic document feeder as described.