JPS6353102B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for curling copied paper in a copying machine, etc., and more specifically, a method for curling copied paper in a copying machine, etc. The present invention relates to a method for curling paper.

[Prior art]

2. Description of the Related Art Some copying machines curl the copied paper to improve its storage capacity in a paper discharge tray. FIG. 1 conceptually shows a general curling device used in such a copying machine. This curling device 1 has a belt 4 wound around rolls 2 and 3, and a roll 5 wrapped around the middle part of the belt.
is installed, and the belt 4 is pressed by the roll 5, and is incorporated in the ejection conveyance path of the copied paper. In this curl device 1,
Paper 7a taken into the device by guide 6
is curled by the roll 5 and belt 4, and is discharged from the apparatus via a guide 8. Note that in FIG. 1, reference numeral 7b indicates a sheet of paper in a curled state. Then, the sheets 7b curled in this manner are placed neatly on a paper discharge tray (not shown).

By the way, if you connect a sorter or the like to such a copying machine and try to fold the copy paper and store it in a bin or the like, the paper 7b will be curled.
As shown in FIG. 2a or b, the paper sheets 7c are placed in the bin 9 or the like, making it difficult to accommodate a large number of paper sheets 7c. That is, when the curled paper 7b is folded in half, the folded paper 7c will either open at the end as shown in FIG. 2a, or
As shown in FIG. 2b, the middle portion bulges out.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to make it possible to place copied sheets in an orderly manner on a paper output tray, a sorter, etc. when the sheets are folded and stored in a paper output tray, sorter, etc. The purpose of the present invention is to provide a method for curling paper.

[Structure of the invention]

In order to achieve the above object, the present invention curls the copied paper into a wave shape before reaching the paper folding machine, and when the paper is folded, the paper parts are curled in the same direction and overlapped. That's what I do.

〔Example〕

The present invention will be described below with reference to embodiments shown in the drawings. FIG. 3 shows a curling device 11 for carrying out the method according to the invention. This device 11 includes a belt 1 wound around rolls 12 and 13.
4 and a belt 17 wound around rolls 15 and 16 are placed on top of each other, and their meeting portion 1
Curling rolls 18 and 19 are placed between 4a and 17a.
are installed so as to sandwich the meeting parts 14a and 17a. These rolls 18, 19 are supported on brackets 20, which are attached to the machine frame 2.
1 so that it can move up and down. Further, a solenoid 22 is installed below the bracket 20, and a solenoid 22 is connected to the bracket 20 through a rod 23.
is connected to. This solenoid 22 has its rod 23 constantly urged upward by a spring 24, and is energized by a control device 26 actuated in response to a signal from a sensor 25 placed close to the roll 12. Pull it downward. In addition, the third
In the figure, numeral 27 is an inlet side guide, and 28 is an outlet side guide.

The copy paper is curled by this curling device 11 as follows. The paper 29a copied in the copying machine is conveyed to the curling device 11 via a guide 27. At this time, the copy paper 29a that has reached just before the rolls 12 and 15 is detected by the sensor 25, and the detected signal activates the timer of the control device 26, and at the same time, the excitation state of the solenoid 22 is cut off. . Therefore, the rod 23 of the solenoid 22 is moved upward by the biasing force of the spring 24.
Correspondingly, the curling rolls 18 and 19 are also moved upward and reach the position shown in FIG. Copy paper 29
a is sandwiched between the belts 14 and 17 in such a state and conveyed to the curling rolls 18 and 19,
When 1/2 of it passes, the curling roll 18,1
9 moves downward. That is, the copy paper 29a is connected to the sensor 2.
5 until half of the paper 29a passes through the curling rolls 18 and 19 is preset in the timer of the control device 26.
Therefore, when 1/2 of the copy paper 29a passes through the curling rolls 18 and 19, the timer of the control device 26 goes off, and the solenoid 22 is energized again.
The rod 23 is moved down against the urging force of the spring 24. In this way, the curling rolls 18, 19
moves downward, and the belts 14, 1 move symmetrically to the position shown in Fig. 3.
When the meeting portions 14a and 17a of 7 are in a state where they extend downward, the rear half of the copy paper 29a passing between the curling rolls 18 and 19 is curled in the opposite direction to the front half, and is ejected from the guide 28. .
The paper designated by reference numeral 29b in FIG. 3 is the ejected paper, with the front half curled upward and the rear half curled downward.

In this way, the copy paper 29b discharged from the curling device is then folded into two by a paper folding device, and the copy paper 29c is further inverted and folded into a fourth
As shown in the figure, it is loaded onto the bins 30 of the sorter. As is clear from FIG. 4, the copy sheets 29c stacked on the bin 30 are all curled in the same direction.

In the above embodiment, the front half of the paper is curled in one direction, and the rear half is curled in the other direction, but the present invention is not limited to this. For example, as shown in FIG. Curl the front half toward one side, curl the next 1/4 section toward the other side, curl the next 1/4 section toward one side, and fold this as shown in Figure 5 b. The length, number, etc. of the curls may be determined so that all parts curl in the same direction when folded.

〔Effect of the invention〕

As described above, in the paper curling method according to the present invention, the paper is curled in a wavy manner while the paper is being conveyed, and the paper is folded so that it can be stored in a paper output tray, a sorter, etc. , all the sheets can be curled in the same direction, thus increasing the sheet storage capacity.

[Brief explanation of the drawing]

Figure 1 is a conceptual diagram of a curling device showing a conventional paper curling method, Figures 2a and b are diagrams showing the state in which sheets conveyed by that method are stacked on a sorter bin, and Figure 3 is a conceptual diagram of a curling device showing a conventional paper curling method. The figure is a conceptual diagram of a curling device showing the method of curling paper according to the present invention, FIG. 4 is a diagram showing the state in which sheets conveyed by the method are stacked on the bin of a sorter, and FIG. Another embodiment of the paper curling method according to the present invention is shown, in which FIG. 5a shows the curled state of the paper, and FIG. 5b
is a diagram showing the paper in a folded state. 11...Curl device, 12,13...Roll,
14...Belt, 14a...Meeting section, 15, 16
... Roll, 17 ... Belt, 17a ... Meeting part, 18, 19 ... Curl roll, 20 ... Bracket, 21 ... Device frame, 22 ... Solenoid, 23 ... Rod, 24 ... Spring, 25...
...sensor, 26...control device, 27...inlet side guide, 28...exit side guide, 29a, 29b...
...Paper, 29c...Paper, 30...Bin.

Claims (1)

[Claims] 1. When paper is discharged from a paper folding machine to a paper storage unit such as a tray or a sorter, if the paper is folded by the paper folding machine before reaching the paper folding machine, the paper can be folded in the same direction. A paper curling method characterized by curling paper in a wavy manner. 2. The paper curling method according to claim 1, wherein substantially the front half of the paper is curled in one direction, and the substantially rear half of the paper is curled in the other direction. 3 Claims characterized in that 1/4 part of the paper is curled in one direction, the next 1/4 part of the paper is curled in the other direction, and the remaining 1/2 part of the paper is further curled in one direction. The paper curling method described in item 1.