JPH0415733Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> This invention relates to a paper conveyance guide device that constitutes a movement path for paper in an apparatus in which paper moves inside, such as a copying machine.

<Prior Art and Its Disadvantages> In a device such as a copying machine in which paper moves inside and specific processing is performed at a predetermined location, the paper must be moved to an accurate position. For this reason, in devices such as copying machines, a paper conveyance path is provided with a conveyance roller and a conveyance belt. In this paper conveyance path, a paper conveyance guide consisting of a pair of flat plates is provided together with each conveyance roller and a conveyance belt, and the paper is moved between the two flat plates. In order to simplify the work of clearing paper jams that occur in the paper transport path, for example, in a copying machine, the main body of the copying machine is divided into upper and lower halves on the plane that includes the paper transport path, and when a jam occurs, the upper member is removed. It was opened using one point as a fulcrum to expose the paper conveyance path.

However, in a device such as a double-sided copying machine that has a complicated paper conveyance path, if the device is constructed with consideration only to the ease of unjamming, there will be areas in the conveyance path where it is difficult to remove jammed paper. It is especially difficult to remove jammed paper from bends, and even if jams occur at other locations, if a piece of torn paper falls into a bend while unjamming, there will be no problem. If you are not equipped with an effective means, you will not be able to enter the conveyance path. For this reason, the device may have to be disassembled, resulting in a disadvantage that the jam release operation is extremely complicated.

<Purpose of the invention> In view of the above-mentioned conventional drawbacks, the purpose of this invention is to provide a paper transport guide that can easily remove paper and paper pieces remaining in the paper transport path and simplify the work of releasing jams. The goal is to provide equipment.

<Structure and Effects of the Invention> The paper conveyance guide device of this invention includes a pair of flat plates forming a paper conveyance path having a bent portion, and the end located at the bent portion is connected to the flat portion of the paper conveyance path of the other flat plate. The present invention is characterized in that a flat plate moving means is provided for moving one flat plate relative to the other along .

With the above configuration, according to this invention, when paper or pieces of paper remain in the paper conveyance path, one flat plate is moved so that the end portion of the other flat plate is along the paper conveyance path surface during the movement. It can be moved by By this operation, the paper or pieces of paper remaining in the paper conveyance path come into contact with the edge of the flat plate, and can be pushed out to a position where the paper can be freely accessed. Therefore, it is possible to easily perform jam release work in areas that were previously difficult.

<Example> FIG. 4 is a schematic diagram showing the configuration of a copying machine using a paper conveyance guide device which is an example of this invention.

A copying process section 43 including a photosensitive drum 42 is configured inside the copying machine main body 41 . Further, a paper feed section 46 with paper cassettes 44 and 45 attached thereto is configured on the right side, and a paper discharge section 48 equipped with a paper discharge roller 47 is configured on the left side. A paper transport path 49 is formed from the paper feed section 46 to the paper discharge section 48 via the copying process section 43.

A sorter 51 having a plurality of bins 55 is attached to the paper discharge section 48 of the copying machine main body 41. Sorter 5
1, a paper conveyance belt 52 and a switchback roller 53 are provided so as to be rotatable in both forward and reverse directions, forming a switchback conveyance path 54. A sub conveyance path 63 including an intermediate tray 62 is formed inside a cabinet 61 in which the copying machine 41 is placed. The switchback conveyance path 54 is continuous with this sub-conveyance path 63. Also, the sub conveyance path 63
is the paper transport path 4 via the paper reversing transport path 8 provided between the lower guide plate 1 and the upper guide 2.
Consecutive 9.

The paper fed from the paper feed section 46 passes through the copying process section 43 and then passes through the paper conveyance path 49 to the paper discharge section 48.
guided by. The single-sided copied paper led from the paper discharge section 48 into the sorter 51 is transferred to the switchback transport path 5.
4, the front and back of the paper is changed, and the paper is conveyed to the sub conveyance path 6.
3 is stored in an intermediate tray 62 provided at 3. After being replaced with the original for the back side, the single-sided copied paper stored in the intermediate tray 62 is transferred to the copying process section 4 again via the sub-transport path 63 and the paper reversing transport path 8.
Guided by 3. At this time, the back side of the single-sided copy sheet on which no image is formed faces the photosensitive drum 42, and images are formed on both sides of the sheet. The double-sided copied paper passes through the paper conveyance path 49 to the paper discharge section 48.
from there to a sorter 51 and discharged into a bin 55.

In the double-sided copying machine as described above, the paper conveyance guide device of this invention is provided in the paper reversal conveyance path 8. The paper reversing conveyance path 8 is bent to connect the sub-conveyance path 63 and the paper conveyance path 49, and it is also impossible to separate the lower guide 1 and the upper guide 2. When this occurred, it was extremely difficult to remove it.

1 and 2 are a side view and a partial front view, respectively, showing the configuration of a paper conveyance guide device that is an embodiment of this invention.

The lower guide plate 1 and the upper guide plate 2 have a substantially planar shape, and both are provided substantially flat. A paper reversal conveyance path 8 is formed between the lower guide plate 1 and the upper guide plate 2. Above each of the lower guide plate 1 and the upper guide plate 2 is a curved portion 1.
a, 2a are formed to form a bent portion 8a of the sheet reversing conveyance path 8. The upper guide plate 2 has screws 10a and 10b attached to a fixing plate 3 attached to the main body of the copying machine.
It is fixed using A guide hole 9 is formed in the fixed plate 3 so as to be substantially parallel to the paper reversing conveyance path 8 . Both sides of the lower guide plate 1 are bent at 90 degrees to form guide surfaces 1b. A screw hole 11 is formed in this guide surface 1b, and a guide screw 5 is screwed through the guide hole 9. Further, the lower end of the lower guide plate 1 is bent to form a pressing portion 7.
is formed. This pressing portion 7 is exposed when the front cover of the cabinet 61 is removed.

FIG. 3 is a side view showing the operation of the paper conveyance guide device.

If a jam occurs in the paper reversing conveyance path 8, the front cover of the cabinet 61 is removed to expose the pressing portion 7. Next, the stopper (not shown) is removed and the pressing portion 7 is pushed down in the direction of arrow A. As a result, the guide screw 5 of the lower guide plate 1 slides in the guide hole 9 in the direction of arrow A. The above-mentioned stopper is for preventing the lower guide plate 1 from sliding downward in the drawing, and may have any structure as long as it is for such purpose. For example, the stopper elastic body 15 shown in FIG. 2 is an example of the stopper elastic body 15, and is a well-known stopper structure.
By pressing the end of this stopper, the pressing portion 7 of the lower guide plate can be pushed down in the direction of arrow A.
Therefore, the end portion 6 of the lower guide plate 1 moves in the direction of arrow A along the parallel portion 2b of the upper guide plate 2. As a result of this operation, the paper and pieces of paper remaining in the paper reversing conveyance path 8 when a jam occurs hit the end portion 6 and fall within the paper reversing conveyance path 8 in the direction of arrow A. As described above, when a jam occurs in a narrow paper reversing conveyance path that has a bent portion where jams are likely to occur and is difficult to access, the remaining paper and pieces of paper can be easily discharged to the outside, The work of releasing the jam can be made extremely easy.

In addition, by providing an elastic material on the lower guide plate 1 and applying an elastic force in the direction opposite to the direction of arrow A, the first guide plate 1 can be moved without using a stopper in a normal state.
It can be kept in the position shown in the figure.

[Brief explanation of the drawing]

1 and 2 are a side view and a partial front view, respectively, of a paper conveyance guide device that is an embodiment of this invention, and FIG. 3 is a side view and a partial front view, respectively, showing the operation of the paper conveyance guide device. FIG. 4 is a schematic diagram showing the configuration of a copying machine in which the paper conveyance guide device is used. 1...Lower guide plate, 2...Upper guide plate, 5
... Guide screw (flat plate moving means), 6 ... End,
8...Paper reversing conveyance path, 8a...Bending portion, 9...
Guide hole (flat plate moving means).

Claims (1)

[Scope of utility model registration request] A flat plate that includes a pair of flat plates that form a paper conveyance path having a bent part, and that moves one flat plate relative to the other so that the end located at the bent part follows the flat part of the paper conveying surface of the other flat plate. A paper conveyance guide device provided with a moving means.