JPH0543014Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a copying machine, etc., in which sheets ejected from a copying section, etc. of a copying machine are arranged in a predetermined position, stored, and sent out again to a copying section, etc. The present invention relates to a paper storage device.

[Conventional technology]

Normally, a general copying machine forms a toner image corresponding to the original image on a photosensitive material, transfers this toner image to paper fed by a paper feed mechanism, sends the paper to a fixing device, fixes it, and then discharges it. It is to be discharged onto a tray.

On the other hand, special copying machines include those that copy on both sides of paper, and those that form toner images of different colors on the above-mentioned photosensitive material, transfer one color toner image onto paper, and then print the paper again. There are copying machines that perform multiple copying in which the paper that has passed through the photosensitive material is sent to a photosensitive material to transfer toner images of other colors. I'm trying to send it out to.

For this reason, it is necessary to store the sheets in the aforementioned intermediate tray in alignment at predetermined positions so that they can be registered when being sent out to the photosensitive material again.
If the paper gets jammed and the paper is stored in the intermediate tray unevenly, it will not be able to register when it is fed out, and it will not be able to feed the paper to the desired position on the photosensitive material.The paper and the photosensitive material will shift from front to back, left and right, and the toner image will not be transferred correctly. Sometimes.

Conventionally, the paper is transported using one side edge as a reference in the transport path between the photosensitive material and the intermediate tray, and the paper is aligned at a predetermined position within the intermediate tray using the leading edge and one side edge as a reference. I'm trying to store it.

For example, as shown in FIG. 7, intermediate tray a is moved a predetermined distance in a direction (arrow d) perpendicular to the conveyance direction (arrow c) of paper b, and one edge e of paper b is moved to intermediate tray a. The sheets b are aligned and stored so that they are in contact with the inner surface f of one side and the front edge g of the intermediate tray a is in contact with the front inner surface h of the intermediate tray a. When feeding the sheets b again, the intermediate tray a is moved in the paper conveyance direction. The paper b is moved in a direction perpendicular to the paper b to position it, and is fed onto the photosensitive material using one side edge e of the paper b as a reference.

[Problem that the invention attempts to solve]

With such a paper storage device, the paper that is aligned and stored in the intermediate tray may shift when the intermediate tray is moved. To solve this problem, the paper is stored by slowing down the moving speed of the intermediate tray. There is a problem that it takes a long time to send out the paper again.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a paper storage device for a copying machine or the like that can store sheets of paper in an aligned manner in an intermediate tray without slowing down the moving speed of the intermediate tray.

[Means and actions for solving problems]

The intermediate tray is moved in a diagonal direction with respect to the direction perpendicular to the paper conveyance direction, so that when the intermediate tray is moved, the paper does not come into contact with two orthogonally adjacent walls that serve as reference walls. This is what I did.

〔Example〕

FIG. 5 is a schematic explanatory diagram of a copying machine having a multiple copying function and a double-sided copying function, in which a photosensitive material 2, a plurality of paper feed trays 3, an intermediate tray 4, etc. are provided in the copying machine main body 1, and the Devices for carrying out the copying process, such as a charger 5, first and second developing devices 6 and 7, and a transfer device 8, are provided around the material 2, and a paper transport path 9 is continuous with the discharge side of the transfer device 8. is provided with a fixing device 10, and the exit side of the fixing device 10 is switch-connected to first and second paper transport paths 12, 13 through a gate 11, and the first paper transport path 12 is connected to a discharge tray 14a.
Continuing with this, a gate 14 and a reverse feed roller 15 are provided in the second paper conveyance path 13, and the gate 14 is configured to feed the paper directly to the intermediate tray 4 at the first position and to the reverse feed roller 15, and at the reverse feed position. roller 15
The feed tray 3 and the feed side of the intermediate tray 4 are connected to the transfer device 8 for the photosensitive material 2 through the feed conveyance path 16. are doing.

As described above, the paper sent out from the paper feed tray 3 undergoes a normal copying operation in which the toner image on the photosensitive material 1 is transferred by the transfer device 8, fixed by the fixing device 10, and then ejected to the output tray 14a. In addition, by switching the gate 11 to transport the paper to the second paper transport path 13 and setting the gate 14 to the second position, the paper is reversely fed by the reverse feed roller 15 and transferred from the gate 14 to the intermediate tray 4. Since the paper is fed inside with its front and back reversed, it can be copied on both sides by sending it out from the intermediate tray 4.
Multiple copies can be made by feeding the paper directly into the intermediate tray 4 with the position as the first position, and then feeding the paper towards the transfer device 8 again.

In other words, in the case of multiple copying, the first developing device 6 develops a part of the original image into a toner image and transfers the toner image onto paper, and then the second developing device 7 develops the remaining part of the original image into a different toner image. By developing the toner image into a colored toner image and transferring the toner image onto the paper fed from the intermediate tray 4, copies with partially different colors can be obtained.

The intermediate tray 4 has a box shape with a front wall 20, a rear wall 21, one side wall 22, another side wall 23, and a bottom wall 24, and the paper is conveyed toward the front wall 20 in the direction of arrow A. .

As shown in FIGS. 1 and 2, a guide pin 25 is brought into contact with the bottom wall 24 of the intermediate tray 4, and this guide pin 25 is slidably fitted into a guide hole 27 of a guide 26. At the same time, a moving mechanism such as a solenoid 28 moves between the intermediate tray 4 and the copying machine main body 1.
The guide hole 27 is tilted rearward with respect to the direction perpendicular to the paper conveyance direction, and when the intermediate tray 4 is moved by the solenoid 28 in the direction perpendicular to the paper conveyance direction, the intermediate tray 4 is configured to move obliquely rearward (in the direction of arrow B) with respect to the direction perpendicular to the sheet conveyance direction by means of a guide pin 25 and a guide hole 26. A diagonal roller 29 is disposed above the intermediate tray 4 to roll the paper 30 fed into the intermediate tray 4 between the front wall 20 and one side wall 22.
It is designed to be fed diagonally towards.

The paper 30, on which the toner image has been transferred and fixed after passing through the photosensitive material 2, is fed into the intermediate tray 4 in the direction of arrow A as described above, and the paper 30 is moved diagonally in the direction of arrow C by diagonal rollers 29. The sheets 30 are fed so that the front edge 30a and one side edge 30b of the sheets 30 are pressed against the front wall 20 and one side wall 22 of the intermediate tray 4, and the sheets 30 are stored in the intermediate tray 4 in an aligned manner.

Then, the paper 30 stored in the intermediate tray 4
When feeding the photosensitive material 2 again, the solenoid 28 is energized and the intermediate tray 4 is moved diagonally (in the direction of arrow B) to determine the position of the intermediate tray 4. As a result, the paper 30 in the intermediate tray 4 is registered and sent out toward the photosensitive material 2, so that the photosensitive material 2 and the paper 30 are prevented from shifting back and forth and left and right.

At this time, since the intermediate tray 4 is moved diagonally in the direction of arrow B, the front edge 30a and one side edge 3 of the paper 30 are
0b is the front wall 20 and one side wall 22 of the intermediate tray 4,
In other words, it is pressed against two walls adjacent at right angles, which serve as reference walls for sheet alignment, and does not shift.

On the other hand, if the intermediate tray 4 is moved in a direction perpendicular to the paper conveyance direction, the paper 30 will shift in the left-right direction, and the front edge 30a will be separated from the front wall 20, making it impossible to align correctly. The faster the movement speed of 4, the more noticeable it becomes.

3 and 4 show a second embodiment, in which an arm 30 is brought into contact with one side wall 22 of an intermediate tray 4, and a pin 32 is bolted along a long groove 31 of this arm 30.
It is movably attached with a nut 33, and a lever 35, which is swung by a solenoid 34, comes into contact with a pin 32 and moves while pushing the intermediate tray 4.

With this configuration, by moving the pin 32 along the long groove 31, the movement strokes S ₁ and S ₂ of the intermediate tray 4 can be adjusted without changing the stroke of the solenoid 34.
can be adjusted arbitrarily, so the feeding position of the intermediate tray 4 can be adjusted arbitrarily.

Therefore, when the paper 30 is fed in with one side edge 30b as a reference, the intermediate tray 4 is positioned outside the reference line D to store the paper 30, and when the paper 30 is sent out, the intermediate tray 4
The paper 30 can be sent out along a reference line whose one side wall 22 is located at the same position as the reference line D.

[Effect of idea]

When moving the intermediate tray 4, the stored paper is pressed against two walls adjacent at right angles, which serve as reference walls of the intermediate tray 4, so that the paper 30 does not shift.

Therefore, since the intermediate tray 4 can be moved at high speed, the paper can be sent out in a short time.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view of the intermediate tray portion, FIG. 2 is a right side view, FIG. 3 is a plan view of the intermediate tray portion of another embodiment, and FIG. 4 is a plan view of the intermediate tray portion of the present invention. 3 is a cross-sectional view taken along the line 3, FIG. 5 is a schematic explanatory diagram of a copying machine, FIG. 6 is a perspective view of an intermediate tray, and FIG. 7 is an explanatory diagram of a conventional example. 4 is the intermediate tray, 30 is paper.

Claims (1)

[Scope of utility model registration request] The paper 30 conveyed from the photosensitive material 2 etc. of the copying machine is
In a paper storage device that stores paper 30 in alignment by pressing it against two walls adjacent at right angles that serve as reference walls of the intermediate tray 4, and sends out the stored paper 30 to the photosensitive material 2 of a copying machine again, the intermediate tray 4 A paper storage device for a copying machine or the like, characterized in that the paper 30 is moved by a predetermined stroke in a diagonal direction with respect to a direction perpendicular to the paper conveyance direction when feeding the paper 30.