JPS63272727A - Original loading multistage tray - Google Patents

Abstract

PURPOSE:To facilate a copying work through simultaneously loading a plurality of originals of different sizes by forming a combined carrier passage which communizes original supply ports facing on an original feeding means. CONSTITUTION:A loading plate 4 to be loaded with large originals of B4 size is integrally fixed on a lateral regulating plate 3 for originals of A3 size. Similarly in the following: on the loading plate 4 for originals of B4 size are provided a pair of lateral regulating plates 5 for originals of B4 size, and then, a loading plate 6 to be loaded with originals of A4 size as the smallest size is fixed on the lateral regulating plates 5 for originals of B4 size, and further, on the loading plate 6 for originals of A4 size are provided a pair of lateral regulating plates 7 for originals of A4 size. On the front end side of the loading plates 4, 6 and a cover 8 is provided a guide section which is sloped towards original supply ports with the intention of forming a combined carrier passage.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an automatic document feeder installed in an image forming apparatus such as a copying machine or an image reading device, and in particular, it simplifies document placement and facilitates copying operations. Regarding the original tray.

(Prior Art) A large number of automatic document feeders have been commercialized for the purpose of simplifying document placement work when a plurality of documents are successively copied. As shown in FIG. 6, the automatic document feeder 10 is mounted on the upper surface of the document table 12 of the copying machine 11, and has document feed means 13 such as a paper feed roller and feed rollers, and conveyance means such as a conveyance bell 14. is used to feed the copied originals placed on the original tray 15 one by one to the original exposure position, and after the process of copying a predetermined number of sheets is completed and the originals are discharged to the original ejection part 16,
The next original is similarly fed to the original exposure position.

Recently, the automatic document feeder 10 is equipped with a document size detector 17, and by setting the size of the paper to be used for copying when starting copying, the detected document size and paper size can be adjusted. There is an automatic magnification selection function that automatically selects the copy magnification by comparing the original size, and in the case of a multi-cassette type copier that can load paper of multiple sizes, it detects the size of the original and automatically selects the copy magnification. Some products have been commercialized that have an automatic paper selection function that automatically selects paper of a size suitable for copying.

Document f2 tray 1 of such automatic document feeder 10
5 is provided with a side regulating plate 18 that regulates the side of the document in the document feeding direction. This side regulating plate is slidably installed using a rack and binion, etc., and regulates the side of a document of any size, allowing the document to be fed to the regular document exposure position and also to be fed diagonally. It is provided to prevent this from happening. However, normally, the document tray is provided with only one pair of side regulating plates. Therefore, the size of originals that can be placed on the original RW tray is only 1iffl, and originals of different sizes cannot be placed f2 at the same time. Therefore, when copying originals of different sizes, it is necessary to sort the originals into originals of the same size and place the originals separately on the original tray for copying, which is cumbersome. However, even in such a document tray, it is possible to place multiple documents of different sizes on the document tray at the same time by positioning the side regulation plate according to the largest size of the documents. I can.

However, with the above-mentioned document placement method, only the largest-sized originals have their sides regulated, so of course the largest-sized originals can be copied without any problems, but smaller documents whose sides are not regulated This may cause documents of this size to be fed diagonally or not to be fed to the proper document exposure position. especially,
This phenomenon is remarkable in a copying machine in which paper is conveyed based on the center. As a result, the entire copy image is shifted or tilted compared to the original image. In addition, oblique feeding of the original may cause erroneous detection of the original size, and the automatic magnification selection function and automatic paper selection function may not function properly.

(Problems to be Solved) In order to make it possible to place a plurality of originals of different sizes at the same time, Japanese Patent Laid-Open No. 61-33438 proposes an automatic document feeder having a plurality of document placement trays. However, such an automatic document feeder still only supports each document i! A pair of side regulating plates and an iMi paper feeder are attached to the loading tray, making it complicated and costly.

An object of the present invention is to create a document that has a simple configuration, is inexpensive, and allows a plurality of documents of different sizes to be placed at the same time, making copying work easier! ! The objective is to provide a loading tray.

(Means for Solving the Problems) The multi-stage document tray of the present invention is a document tray of an automatic document feeder that automatically feeds the placed document to the document exposure position. Two or more side regulating plates of different sizes are stacked together to form a converging conveyance path that shares a document feed port facing the document feed means, and documents of different sizes can be loaded at the same time. It is what makes it possible.

In particular, it is preferable that the side regulating plates be integrally formed so that the size of the document to be regulated by the side regulating plates becomes smaller each time the side regulating plates are stacked.

Furthermore, the multi-stage document tray of the present invention is a document tray of an automatic document feeder that automatically feeds the placed document to the document exposure position, and is a document tray of a size that regulates the sides of the document. A multi-stage document tray configured with a combined conveyance path in which two or more different side regulating plates are stacked and share a document feed port facing a document feeder, and a document tray attached to an automatic document feeder. The document tray includes a plate and a pair of side protection plates that are slidably provided with respect to the document tray, and is configured to be removable from the document tray. It is also possible to place different originals at the same time.

(Function) According to the multi-stage original tray configured according to the present invention, a plurality of side regulating plates of different sizes for regulating the sides of originals are stacked, so originals of different sizes can be placed on the original tray at the same time. This makes it possible to combine the automatic magnification selection function and the automatic paper selection function to make copies all at once, which simplifies the copying work.

(Example) A multi-stage original tray that is an example of the present invention will be described with reference to FIGS. 1 to 3. FIG. Manuscript of the invention! ! The multi-stage tray can be applied to an automatic document feeder as shown in FIG.

FIG. 1 is a vertical cross-sectional view of essential parts of a multi-stage original tray according to an embodiment of the present invention, FIG. 2 is a side view of the multi-stage original tray shown in FIG. 1, viewed from the original insertion direction, and FIG. FIG. 2 is a plan view of the multi-stage original tray shown in FIG. 1 viewed from above. The multi-stage document tray 1 of this embodiment stacks side regulating plates of three different sizes, for example, A3, 84, and A4, and also has a document feed port facing the document feeding means. This constitutes a converging conveyance path that shares the following information. Furthermore, the side regulating plates are integrally provided so that the size of the documents to be regulated becomes smaller each time they are stacked in the upper stage. First, there is a placing plate 2 on which the maximum size A3 size document is placed, and a pair of side regulating plates 3 arranged on the 'R placing plate 2 to regulate the sides of the A3 size original. has been done. The placing plate 2 has a horizontal portion, a guide portion on the front end side of the horizontal portion facing the document feeder 13 for guiding the document to the paper feed port of the document feeder 13, and a guide portion on the rear end side for guiding the document to the paper feed port of the document feeder 13. It has a sloped part to smoothly send it forward.

Placement plate 4 on which the next largest B4 size document is placed is A3.
It is integrally attached on the side regulation plate 3 for size documents. Similarly, a pair of side regulating plates 5 for 84-size originals are arranged on the placing plate 4 for B4-sized originals, and a mounting plate for placing A4-sized originals, which is the smallest size, is arranged. A plate 6 is mounted on the side regulation plate 5 for 84-size originals, and a pair of side regulation plates 7 for A4-size originals are arranged on the A4-size original placement plate 6 . Further, in this embodiment, a lid 8 is provided above the side regulating plate 7 of the A4 size document in the uppermost row. In other words, as shown in FIG. 2, the side surface has a stepped shape.

The mounting plates 4.6 and M8 each have a guide portion inclined toward the document feed port to form a converging conveyance path on the front end side. Further, as shown in FIG. 3, an indication 9 indicating the size of the document that can be placed in the document insertion slot is provided along with an arrow.

In this embodiment, only three types of originals can be placed at the same time.
It is also possible to increase the number of stages to 4 or 5 stages. Also,
The size of originals that can be placed is not limited to this embodiment, and originals of any size may be placed as necessary. Further, the multi-stage original tray of the present invention can also be made by integrally molding a material such as resin.

In the multi-stage document tray of the present invention, the location for placing and inserting documents is different depending on the size of the document, but since the document feed port facing the document feeder is shared, all documents can be loaded and inserted using one document feeder. The original is fed.

In this embodiment, the documents are fed in order from the smallest size document at the top. The automatic document feeder is equipped with a document size detector, so by combining it with the automatic magnification feeder and automatic paper selection function, it is possible to place documents of different sizes, so you can make the desired copies at once. You can get things.

In addition to the above-mentioned embodiment, as shown in FIG. ! The length of the placing plate does not need to be such that the entire document can be placed thereon, and there is no need to attach a lid to the uppermost document side regulating plate. Furthermore, the multi-stage document tray 20 shown in FIG. 5 is for a case where the reference for the document exposure position is not at the center edge of the document but at the side edge, and in the figure, the reference for the document exposure position is on the right side. The originals are placed in front of the paper.

Further, FIGS. 7 to 9 show another invention in which the multi-stage original tray of the present invention described above is improved so as to be detachable from the original tray attached to an automatic document feeder. As shown in FIG. 6, a pair of side regulating plates 18 are provided on the document tray 15 attached to one end of the automatic document feeder 10 so as to be slidable by a rack-and-binion 22 or the like. This side regulating plate 18 can regulate the sides of a document of any size. Manuscript of the invention! ! A recessed portion that engages with the side regulating plate 18 is provided at a portion of the two-device stage tray 21 that comes into contact with the side regulating plate 18 . The side regulating plate 18 and the recess on the side of the multi-stage original tray 21 engage with each other, and the multi-stage original tray 21 is regulated and installed in the front, back, left and right directions relative to the conventional original tray 15. .

As a result, when copying originals of different sizes at the same time, the multi-stage original tray 21 of the present invention can be attached to the original tray 15, so that originals and manuscripts of different sizes can be placed simultaneously, and automatic magnification selection is possible. By combining this function and the automatic paper selection function, you can make copies all at once. When copying originals of the same size, the multi-stage original tray is removed and the originals are placed and copied in the conventional manner. This is how the manuscript of this example is written! ! By using a multi-stage tray, copying work can be facilitated at low cost and without modifying a conventional automatic document feeder or the like.

(Effects of the Invention) Conventionally, documents of different sizes could not be placed simultaneously on the document tray of an automatic document feeder, but with the simple configuration of the present invention, documents of different sizes could not be placed simultaneously on the document tray of the automatic document feeder. At the same time by using a device tray! 3! This makes copying work easier. Furthermore, since the multi-stage document tray of the present invention can be attached to and removed from a conventional automatic document feeder without requiring any special modification, the present invention can also be applied to a conventional automatic document feeder to facilitate copying operations. It can be easily done.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of main parts of a multi-stage tray for placing documents according to the present invention;
Figure 2 is a side view of the multi-stage original tray shown in Figure 1, viewed from the original insertion direction; Figure 3 is a plan view of the multi-stage original tray shown in Figure 1, viewed from above; 5 is a schematic explanatory diagram of the main parts of a multi-stage document tray according to another embodiment of the present invention, FIG. 6 is a sectional view of the main parts of a copying machine to which a conventional automatic document feeder is applied, and FIGS. 7 to 9 The figure is an explanatory diagram of an embodiment in which a multi-stage original tray of the present invention is made detachable. 1.19, 20.21...Multi-stage original tray 2.
4.6...Place plate, 3.5.7...Side regulation plate, 13...Document feeding means, 15...Document placement tray

Claims (5)

[Claims] (1) A document tray of an automatic document feeder that automatically feeds the placed document to the document exposure position, which has two side regulating plates of different sizes to regulate the sides of the document. What is claimed is: 1. A multi-stage document loading tray characterized in that two or more documents are stacked one on top of the other, and a combined conveyance path is formed in which the document feed port facing the document feeding means is shared, so that documents of different sizes can be placed at the same time. (2) The multi-stage original tray according to claim 1, wherein the side regulating plates are integrally formed so that the size of the originals to be regulated becomes smaller each time they are stacked. (3) The multi-stage original tray according to claims 1 and 2, characterized in that the size of the original to be regulated by the side regulating plate is displayed. (4) A document tray of an automatic document feeder that automatically feeds the placed document to the document exposure position, which has two side regulating plates of different sizes to regulate the sides of the document. A multi-stage document tray configured with a converging conveyance path in which two or more documents are stacked together and share a document feed port facing the document feeder, a document placement plate attached to an automatic document feeder, and the document placement plate. The document tray is provided with a document tray consisting of a pair of side regulating plates that are slidably provided, and is configured to be removably attached to the document tray, so that documents of different sizes can be placed at the same time. A multi-stage original tray featuring: (5) The pair of side regulating plates of the document tray are slidably provided by a rack and pinion, and can regulate the sides of a document of any size. Multi-tier document placement tray as described in section.