JPS6036950B2 - paper handling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to paper processing in a line printer in which paper is automatically loaded and the paper is folded according to the amount of paper feeding within the processing device.

An object of the present invention is to detect the amount of paper slack that occurs between a line printer and a paper processing device before the paper is loaded into the paper processing device, and to correct the operation timing of the paper processing device, thereby improving the quality of paper. Paper processing line/
The present invention provides a paper processing device for a printer.

According to the present invention, continuous folding paper is automatically loaded;
In the paper processing device of a line printer that processes paper according to the amount of paper fed within the paper processing device, the line/printer that occurs before the paper is automatically loaded into the paper processing device.
By including a means for detecting the amount of paper slack between the printer and the paper processing device after the paper is automatically loaded into the paper processing device, and a means for correcting the operation timing of the paper processing device according to the detection result, A paper processing device for processing paper is obtained.

An embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the paper processing device of the present invention includes a paper guide section 6 for guiding the paper 4 to a feed roller 7, a feed roller 7 for feeding the paper 4, and a paper guide section 6 for guiding the paper 4 to a feed roller 7;
A swing fin 8 that folds the paper into the paper holder 9, a paper holder 9 for accumulating the paper 4, and a paper guide section 6.
a paper tension detection micro for detecting the tension state of the paper 4, a switch 10, and a paper detection microphone for detecting the starting point of the paper processing operation of the paper processing device 5. - Consists of switches 11, etc. Electrically, as shown in FIG. 2, a paper length setting rotary and switch 12 are used to set the paper length of the paper 4 to be processed, and a feed pulse that simulates the paper feed amount of the paper processing device 5 is generated. a feed pulse disk 15 and feed pulse detection means 16 mounted on the feed roller 7 for the purpose of
Up/down counter 22 for generating a feed pulse that matches the paper feed amount of the paper processing device 5, paper length counter 26 for counting the paper feed amount of the paper processing device 5, and driving of the swing fin 8. It is comprised of a paper length matching circuit 27 for detecting timing, a swing fin control circuit 28 for driving the swing fin 8, and the like. Note that the tractor 3 of the line printer 1 is provided with a line pulse disk 13 for generating a line pulse when the paper feed amounts of the line printer 1 match, and a line pulse detecting means 14.
detects line pulses and provides line pulses to the paper handling device 5 through a logical interface with the paper handling device 5. Next, an outline of the paper processing operation of the paper processing device 5 will be explained. The paper 4 is transported by the tractor 3 of the line printer, printed at the position of the type drum 2, and sent to the paper processing device 5.

In the paper processing device 5, the paper 4 is allowed to fall naturally by the paper guide section 6, and is automatically bitten into the feed roller 7.
The swing win 8 swings left and right according to the paper length and paper feed amount, so that the paper is correctly folded and stored on the paper holder 9. The paper holder 9 automatically descends according to the amount of accumulated paper 4, but since it is not directly relevant to the present application, its explanation will be omitted. Also, the paper processing device 6 detects when the paper 4 is bitten by the feed roller 7.
The paper processing operation starts from the moment the switch 11 is activated. In this case, the maximum paper feed speed of the line printer is about 100 inches/second with a printing speed of about 100 mm/minute.

On the other hand, the effective paper feeding speed of the paper processing device 5 is set to about 50 inches/second. The reason for setting the paper feeding speed of the paper processing device 5 is that, due to the nature of the paper 4, if the paper 4 is fed at a speed of approximately 50 inches/second or more, good folding cannot be achieved. Since the frequency of operation at the maximum speed (skip operation, etc.) is low, even if the effective paper feeding speed of the paper processing device 5 is slower than the maximum paper feeding speed of the line printer 1, in actual use (for example, if the line printer 1 This is because a sufficient response can be achieved at a paper feeding speed of about 10 inches/second when printing is performed at line feed. However, when the paper feed speed of the line printer exceeds the paper feed speed of the paper processing device 5, paper slack occurs between the two devices.

Therefore, a phase shift corresponding to the amount of paper slack occurs between the line pulse that matches the paper feed amount of the line printer and the paper feed amount of the paper processing device 5, so that the paper processing operation of the paper processing device 5 is Since it is not possible to use a line pulse that matches the paper feed amount of the line printer, a new feed pulse that matches the paper feed amount of the paper processing device 5 is created, and the paper processing device 5 processes the paper using the feed pulse. It is necessary to perform an action. In order to generate a feed pulse that matches the paper feed amount of the paper processing device 5, first, a line pulse disk 13 is installed on the drive shaft of the tractor 3 of the line printer, and a large number of pulses are provided on the disk surface. Interval slit line/pulse detection means 1
4, and a line pulse matching the paper feed amount of the line printer detected by the line pulse detection means 14 is supplied to the paper processing device 5.

Next, in the paper processing apparatus, a feed pulse disk 15 is provided on the drive shaft of the feed roller 7, and a large number of equally spaced slits provided on the surface of the disk are detected by a feed pulse detection means 16. The feed pulse detected by the feed pulse detection means 16 is a feed pulse that simulates the paper feed amount of the paper processing device 5 because the feed roller 7 is constantly rotating.
For this reason, next, using the up and down counters 22,
Create feed pulses that match the paper feed amount of the paper processing device 5 by extracting feed pulses that simulate the paper feed amount of the paper processing device 5 by the number of line pulses that match the paper feed amount of the line printer. do. That is, the up/down counter 22 is incremented by a line pulse that matches the paper feed force of the line printer, and only when the count value of the counter 22 is not zero, the feed is simulated to the paper feed amount of the paper processing device 5.・Aff with pulse. - By decrementing the down counter 22, the decrement count signal of the counter 22 becomes a feed pulse that matches the paper feed amount of the paper processing device 5. When a feed pulse matching the paper feed amount of the paper processing device 5 is detected, the paper length counter 26 counts based on the feed pulse.

That is, the count value of the paper length counter 26 represents the paper feed amount of the paper processing device 5. The counted value of the paper length counter 26 is supplied to the paper length matching circuit 27, and is matched with the set value of the paper length setting rotary switch 12, which sets the paper length of the paper 4 to be processed by the paper processing device 5. This is done in the paper length matching circuit 27, and when a match is made, an output is generated from the paper length matching circuit 27, the swing fin control circuit 28 operates, the paper length counter 26 is reset, and the next one of the swing fins 8 is Move to step control. The swing fin control circuit 28 moves the swing fin 8 one step in response to a command from the paper length matching circuit 27. Note that although the drive means for the swing fin 8 is not specifically shown, it can be realized by a very general means such as an electromagnetic clutch, so its explanation will be omitted. Further, the operation of the swing fin 8 is such that one cycle is formed by four steps: left side → center → right side → center. Next, in the paper processing device 5 of the present invention,
The amount of paper slack between the line printer 1 and the paper processing device 5, which occurs before the paper 4 is automatically mounted on the paper processing device 5, is detected after the paper 4 is automatically mounted on the paper processing device 5. The means and the means for correcting the sheet processing operation timing of the sheet processing device 5 in accordance with the detection results will be described in detail with reference to FIG.

First, the above-mentioned means for detecting the amount of paper slack issues a paper feeding stop request 20 to the line printer when the paper 4 is automatically loaded into the paper processing device 5.
What is necessary is to detect the amount of paper feed by the feed roller 7 until the paper becomes taut. That is, the paper detection micro switch 11 is connected to the reset terminal of the flip-flop 17, further connected to the AND gate 19, and further connected to the reset terminal of the paper length counter 26 via the OR gate 25. In addition, there is a micro-switch Kawama Flipf for detecting paper tension. Connect to the set terminal of top 17. Further, the negative output terminal Q of the flip/flop 17 is connected to AND gates 18 and 19. Further, the output signal 20 of the AND gate 19 is supplied to the line printer 1 via a logical interface as a paper feeding stop request signal. Further, the feed pulse detection means 16 is connected to a paper length counter 26 via an AND gate 18 and an OR gate 24. Now flip flop 17
The negative output terminal Q of the paper 4 is automatically fed into the feed roller 7 of the paper processing device 5, the paper detection micro switch 11 is activated, and the paper tension detection micro switch 10 first detects paper tension. It is producing output until Therefore, the output 20 of the AND gate 19 is generated from when the paper detection micro switch 11 detects the paper 4 until the paper tension detection micro switch 10 first detects paper tension, and this output is It is supplied to the line printer as a paper feed stop request signal 20. Also,
The output of the AND gate 18 is output while the paper detection micro switch 11 is detecting paper 4 until the paper tension detection micro switch 10 first detects paper tension.
A feed pulse that simulates the paper feed amount of the paper processing device 5 by the feed pulse detection means 16 is generated. The output of this AND gate 18 is connected to a counting terminal of a sheet length counter 26 via an OR gate 24. Also, since the paper detection micro switch 11 is connected to the reset terminal of the paper length counter 26 via the OR gate 25, the paper is detected only when paper 4 is detected by the paper detection micro switch 11. The length counter 26 is counted. That is, the paper length counter 26 is set after the paper 4 is detected by the paper detection micro switch 11.
Until paper tension is detected by the paper tension detection micro switch 10, feed pulses simulating the paper feed amount of the paper processing device 5 are counted by the output of the AND gate 18. The paper length counter 26 is output from this AND gate 18.
The number of feed pulses received by the paper handling device 5
Lines and lines that occur before paper 4 is automatically loaded on the
It is the amount of paper slack between the printer and the paper processing device 5,
This feed pulse causes the paper length counter 26 to count, which means that the operation timing of the paper processing device 5 has been corrected. With this, the amount of paper slack between the line printer 1 and the paper processing device 5 that occurs before the paper 4 is automatically loaded into the paper processing device 5 will be reduced after the paper 4 is automatically loaded into the paper processing device 5. At the same time, when the feed roller 7 feeds out an extra amount of paper by the amount of slack in the paper, a correction operation is performed to advance the operation timing of the paper processing device 5 by the amount of slack in the paper that has been extra fed out. .

Further, in the present invention, a means for generating a feed pulse that simulates the paper feed amount of the paper processing device 5 is required. If the feed pulse disk 15 is directly attached to the drive shaft and a large number of equally spaced slits provided on the disk surface are detected by the feed pulse detection means 16 using a very general detection means such as magnetic or optical, good. In addition, as another means for generating feed pulses, an idle roller is rotatably attached to the drive shaft of the feed roller 7 of the paper processing device 5, and the feed pulse is generated on the idle roller.
The disk may be mounted, and a large number of equally spaced slits provided on the disk surface may be detected by a feed pulse detection means using a very general magnetic or optical detection means. Further, as another means for generating feed pulses, there is a method of creating an oscillation pulse using a general oscillation circuit and using it as a feed pulse. In addition, in the present invention, the feed and
A pulse and paper detection micro switch and a paper tension detection micro switch are used to detect the amount of paper slack between the line printer and paper processing device that occurs before the paper is loaded into the paper processing device. Although we have shown an example of a combination of very common gates, flip-flops, counters, etc. as a means for detecting when paper is automatically placed in a bag in the apparatus and correcting the operation timing of the paper processing apparatus according to the detection result, there are other methods as well. This can be achieved using a very general circuit such as a method using a microcomputer.

As explained above, the present invention is capable of reducing the amount of paper slack between a line printer and a paper processing device that occurs before the paper is automatically loaded into the paper processing device. The paper processing apparatus includes a means for detecting the amount of slack in the paper at the same time when the paper is excessively fed out by the paper processing device by the amount of slack, and a means for correcting the operation timing of the paper processing device by the amount that the paper is fed out in accordance with the detection result. As a result, a paper processing device for a line printer that automatically loads paper and performs a good folding operation can be obtained.

[Brief explanation of the drawing]

Figure 1 shows a line printer and paper processing device;
FIG. 2 is a block diagram of the paper processing device. 1...Line printer, 2...Type drum, 3.
...Tractor, 4...Paper, 5...Paper processing device, 6.
... Paper guide section, 7... Feed low-fu, 8. ．．
・Swing fin, 9...Paper holder, 10...Micro switch for paper tension detection, 11...Micro switch for paper detection, 12...Rotary switch for paper length setting, 13...Line・Pulse disk, 14...
Line pulse detection means, 15... Feed pulse disk, 16... Feed pulse detection means, 1
7...Flip-flop, 20...Paper feed stop request signal, 22...Up/down counter, 26
. . . Paper length counter, 27 . . Paper length matching circuit, 28 . . . Swing fin control circuit. Figure 1 Figure 2

Claims (1)

[Claims] 1. In a paper processing device of a printer which is equipped with continuous folding paper and performs a paper folding operation according to the paper feed amount of a paper transport means provided within the printer, the starting edge of the paper ejected from the printer a first switch means that detects that the paper has reached the paper transport means and activates the paper transport means; a second switch means that detects the tension of the paper between the printer and the paper transport means;
A paper processing apparatus comprising: means for stopping the paper ejecting operation of the printer after a detection signal from the first switch means is obtained until a detection signal from the second switch means is obtained.