JPH04138043U - Paper feeding mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the operability of the subtray in a paper feeding mechanism having a subtray for each of the paper feeding tray and the paper ejection tray. [Structure] A sub-tray 25 of a paper feed tray 23 and a sub-tray 26 of a paper discharge tray 24 are coupled by a coupling member 27. As a result, when one subtray is operated, the other subtray is also operated at the same time.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is related to the paper feeding mechanism of paper handling devices such as copying machines, scanners, and fax machines. Ru.

0002

[Conventional technology]

FIG. 5 is a schematic structural diagram showing a conventional paper feeding mechanism in an image reading device. In the diagram The main body 1 of the image reading device includes a paper feed tray 2 on which documents to be read are placed, and a paper output tray. 3 are each removably attached. Paper feed tray 2 has a tray that is perpendicular to the document feeding direction. A pair of guides 4 are attached that are movable in the directions shown in FIG. Also, paper feed tray 2, Each of the paper output trays 3 has an extendable and retractable tray in the document feeding direction (arrow A direction and arrow B direction). Equipped with conventional sub-trays 5 and 6, which can accommodate large-sized documents. It has become.

0003 Inside the image reading device 1, there is an image reading sensor 7 that reads the image of the document, and each conveyor. A feed roller is provided.

0004 Next, to explain the operation, the original placed on paper feed tray 2 is moved to the pickup roller. The sheets are fed out one by one by roller 8 and separation roller 9, and then delivered to feed roller 10. Therefore, it is conveyed to the image reading sensor 7. The original is read by guide roller 11 It is brought into close contact with the sensor 7, and the image is read here.

[0005] The read document is discharged onto a paper discharge tray 3 by a paper discharge roller 12.

[0006] FIG. 6 is a schematic structural diagram showing another conventional example.

[0007] In this conventional example, the paper feed tray 2 and and a paper ejection tray 3 are installed. In the figure, pick from above paper tray 2. The document fed out by the up roller 8 and separation roller 9 is sent to an image reading sensor. After the image is read in step 7, the conveyance direction is reversed and it is placed below the paper feed tray 2. The paper is ejected onto the paper ejection tray 3.

[0008]

[Problem that the idea aims to solve]

However, in the device shown in Figure 5, the paper feed tray and paper output tray are Since they are located on both sides of the device and are separated from each other, the installation space for the device is large. There was also the problem of poor operability.

[0009] In this regard, the device shown in Figure 6 has both trays on the same side, so the above problem can be solved. The problem is solved to some extent, but when scanning large originals, the paper tray , both sub-trays of the paper output tray must be extended. Paper tray sub Even if you extend the tray, you may forget to extend the sub-tray of the output tray, so in this case In some cases, the ejected document would fall off the eject tray.

0010 This invention was devised in view of the above problems, and its purpose is to Improved operability of the eject tray's sub-tray to extend and retract it to prevent stacking defects of ejected originals. An object of the present invention is to provide an excellent paper feeding mechanism that prevents the above problems.

[0011]

[Means to solve the problem]

In order to solve the above problem, the present invention has a paper feed tray and a paper feed tray on the same side of the paper handling device. and a paper output tray, and each tray is equipped with a sub-tray that expands and contracts in the paper feeding direction. In the paper feeding mechanism, the above-mentioned sub-trays are combined.

0012

[Effect]

By combining the sub-tray of the paper feed tray and the sub-tray of the paper output tray, it is possible to When one subtray is expanded or contracted, the other subtray also expands or contracts at the same time. However, This reduces the number of operations and prevents forgetting to perform the other operation.

[0013]

【Example】

Embodiments of the present invention will be described below with reference to the drawings. Note that this is common to each drawing. Elements are given the same reference numerals.

[0014] FIG. 1 is a schematic structural diagram showing an embodiment of the present invention. In FIG. 1, this example The paper handling device 21 is a device that has both an image reading function and a printing function. That is, the device 21 includes an image reading sensor 7 and an image forming device 22.

[0015] On the right side of the device 21 is a paper feed tray 23 on which the original to be read is placed, and below it A paper discharge tray 24 is attached to each of them. Guide the original to the paper feed tray 23 A pair of guides 4 are provided. The paper feed tray 23 and paper output tray 24 have Expandable sub-trays 25 and 26 are provided, respectively.

[0016] As shown in FIG. The sub-trays 25 and 26 are connected to each other so that they can expand and contract as a unit. It has become. FIG. 2 is an exploded perspective view showing the main parts of the embodiment. In Figure 2, The sub-tray 25 is located between the upper plate of the paper feed tray 23 and the hook portion 23a. A 26 is inserted between the upper plate of the paper output tray 24 and the hook part 24a, and attached. be done.

[0017] In FIG. 1, the paper handling device 21 includes a pickup roller as in the conventional example. 8, separation roller 9, feed roller 10, guide roller 11 and discharge roller 1 2 are arranged along the document transport path 28, respectively.

[0018] A paper cassette 29 containing printing paper is installed below the paper output tray 24. There is. The printing paper in the paper cassette 29 is fed out by a hopping roller 30. , through processes such as development and transfer in the image forming section 22, and then onto the printing paper by the fixing device 31. The image is fixed and printed. After printing is completed, the printing paper is placed in the stacker at the top of the device. It is designed to be discharged to a cleaning section 32.

[0019] Next, the document reading operation will be explained.

[0020] First, a document to be read is placed on the paper feed tray 23. At this time, If the size of the document is small, the sub trays 25 and 26 should be retracted as shown in Figure 3. It is placed in If the size of the document is large, extend the paper feed sub-tray 25. When the paper feed sub-tray 25 is extended, the paper output sub-tray 26 is also extended at the same time. Ru. In this way, in this embodiment, both subtrays can be simultaneously expanded with one enlargement operation. 25 and 26 are stretched. FIG. 4 shows the stretched sub-trays 25 and 26. vinegar.

[0021] The original placed on the paper feed tray 23 is transported by a pickup roller 8 and a separation roller 9. The sheets are fed out one by one by the feed roller 10 and transported to the image reading sensor 7. sent. The transported document is brought into close contact with the image reading sensor 7 by the guide roller 11. and the image is read.

[0022] The scanned document changes direction while passing through the conveyance path 28, and then passes through the ejection roller 12. The paper is discharged onto the paper discharge tray 24. If the original size is large, When the paper feed sub-tray 25 is extended, the paper output sub-tray 26 has already been extended. Therefore, the paper can be placed securely on the paper discharge tray 24 and will not fall off.

[0023] In the above embodiment, the member connecting the paper feed sub-tray 25 and the paper ejection sub-tray 26 is Although it is provided in one place at the tip of the tray, even if it is provided in multiple places, it will still be It may be provided over the area. In this case, it may be difficult to remove the ejected documents on the eject tray 24. It is desirable to install it in a position where it will not cause any trouble.

[0024]

[Effect of the idea]

As explained in detail above, according to the present invention, the paper feed sub-tray and the paper ejection sub-tray Since we have combined the This improves operability.

[0025] In addition, in particular, by operating the paper feed sub-tray, you may forget to operate the paper output sub-tray. This also has the effect of preventing the ejected original from falling off.

[Brief explanation of drawings]

FIG. 1 is a schematic structural diagram showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing main parts of the embodiment.

FIG. 3 is a partial perspective view showing the paper feed and paper ejection trays of the embodiment.

FIG. 4 is a partial perspective view showing the subtray of the embodiment.

FIG. 5 is a schematic structural diagram showing a conventional paper feeding mechanism.

FIG. 6 is a schematic structural diagram showing another conventional example.

[Explanation of symbols]

23 Paper feed tray 24 Paper output tray 25 Paper feed sub tray 26 Paper output sub tray 27 Connecting member

Claims (1)

[Scope of utility model registration request] [Claim 1] In a paper feeding mechanism in which a paper feed tray and a paper ejection tray are provided on the same side of a paper handling device, and each tray is provided with a subtray that expands and contracts in the paper feeding direction, each of the above subtrays is combined. A paper feeding mechanism featuring: