JPS5890971A - Paper cutting control method - Google Patents

Abstract

PURPOSE:To unnecessitate to adjust a paper-cutting mechanism, by a method wherein the difference between a predetermined interval of perforated lines and the interval of perforated lines of a paper used is calculated by subtraction, and a paper-cutting mechanism is operated when the difference is reduced to zero, in the case of using a paper having perforated lines at an interval different from a predetermined interval of perforated lines. CONSTITUTION:The interval of the perforated lines of a standard paper and that of the paper used are inputted into a calculating circuit 10, which calculates the difference between the two types of intervals, that is, (the standard paper length, a)- (length of the paper used, b) and multipulies the difference by n (an integral number). The absolute value of difference (c) of the result of calculation is inputted into a counter 11, while the plus or minus sign (d) is inputted into a gate circuit 15, and the value set on the counter 11 is subjected to subtraction by a correcting travel for bringing the perforated line into register with a cutter 8-1 after the paper is traveled by an amount corresponding to n-sheets. A subtraction-strating signal from a controlling part 12 is inputted into a flip-flop circuit 14 to bring the circuit 14 into a set condition, whereby the circuit 14 commands a motor-controling circuit 16 to rotate a motor, and the gate circuit 15 receiving the plus or minus sign (d) outputs a signal (e) for forward or reverse rotation of the motor to the circuit 16 after the paper is cut.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper cutting control method, particularly an improved paper cutting control method for a printing device in which a paper cutting mechanism is provided at a position an integral number of paper perforations apart from the printing unit of the printing device. Regarding.

BACKGROUND ART Printing paper used in printing devices, particularly printing devices equipped with electrostatic printing and fixing mechanisms, is provided with perforations that are continuous in the paper feeding direction at required intervals, and is folded at the perforations. An integrated system of a conventional printing device and paper cutting mechanism is shown in FIG. Continuous paper l is moved in the direction opposite to the arrow μm] by the tractor 2 and BK, passing through the opening of the printing unit 4 and the transfer drum 5, and is further compressed by a pair of rollers 6 with a predetermined pressure, and fixed by the rotation of the rollers. After the paper passes through the Gimpo section 7 and is arbitrarily cut by the paper cutting mechanism 8, it is discharged by the Nocola 9. By the way, in this printing apparatus, a method is adopted in which the cutter 8-1 of the paper cutting mechanism 8 is provided at position 1 of the printing section 4 and the paper is cut along the perforations. Therefore, if the paper used is changed and the perforation interval is different, the cutter 8
The disadvantage is that the position of -1 must be adjusted to an integral multiple of the perforation interval of the paper being used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above drawbacks, and an object of the present invention is to provide a paper cutting control method that is easy to handle and can be easily handled without requiring adjustment of the paper cutting mechanism even when the printing paper is changed. This is the purpose. To briefly explain the present invention, in a paper cutting control device that cuts paper along perforations in a printing device that is located at a predetermined position from a printing unit, a paper cutting control device that cuts paper along perforations that are different from a predetermined perforation interval is used. When used, calculate the difference in the interval between both perforations, multiply this difference by a required integer, set this calculation result in a counter, subtract the chain on the counter as the paper runs, and then make sure this value becomes zero. When this happens, the paper cutting mechanism is activated, and in preparation for the next printing, the remaining paper is moved in the opposite direction and in the running direction, respectively, in preparation for the next printing. It is characterized by this.

Hereinafter, one preferred embodiment of the present invention will be described in detail using Figure F. FIG. 2 is a neo-schematic diagram showing the paper cutting state of the present invention, and FIG. 8 is a 10-step diagram showing the paper cutting control method of the present invention. In FIG. ,, control m1 part, l:l
: 14 is a flip "flip" 1 path, 15 is a gate circuit, 16 is a 7-ter control circuit, 17 is a motor, 1
8 is a code plate, and 19 is a photoelectric conversion element. First, a description will be given of FIG. FIG. 2(a) shows a paper used as a reference in the present invention, for example, a paper with a perforation interval of 12 inches. In this case, the cutter 8-1 is located at a position an integral multiple of 12 inches r1, that is, 12n inches from the printing section 4 position. will be placed. For example, if n sheets of 10-inch paper are run with the perforation interval shown in FIG. 2(b) in this printing device, α
Considering this, as is clear from the figure, the leading edge of the first sheet is located at a position (+2-10) r1 inch in front of the cutter 8-1. Therefore, in order to cut the paper with the cutter 8-1, it is possible to run the paper 1 (12-10) n inches extra and bring it to the state shown in Figure 2 (0). It is possible to set the remaining paper to the next printing position by returning it to the original direction by the distance traveled. Based on the above idea, Figure 3 V7-Boss Implementation VA1
It is.

The perforation interval of the standard paper (hereinafter referred to as standard paper length) and the perforation interval of the paper to be used (hereinafter referred to as used paper length) are input to the arithmetic circuit IO. Of course, the manual method is manual,
Alternatively, the processing may be performed using any signal from the processing device. The arithmetic circuit IO performs an operation of (standard paper length - used paper length) and this difference multiplied by an integer (n), and outputs the operation result with a plus/minus sign. The absolute direct value of the calculation result is set in the counter 11, while the positive/negative sign 9J' is input to the gate circuit [5].

This counter it is set (direction is a predetermined integer 1)
After the paper run of the latest sheet is completed, it is subtracted by a correction run that aligns the perforation with the cutter 8-1. Immediately, the paper is allowed to continue running completely and the counter 11 starts subtracting. Of course, the counter ttBt-hi will be described later on the code board 17.
If the capacity of the paper is large enough to accommodate an integral number (n) times the standard paper length, the start of subtraction will be unpleasant and inevitable. The subtraction start signal of the control unit 12 is input to the flip-flop circuit [4, which sets it to 1i5&, thereby instructing the flip-flop circuit 16 to rotate the motor. On the other hand, after receiving the positive and negative signals, the gate circuit 15 outputs a motor forward/reverse signal to the motor control circuit 16 after cutting the paper. The motor 17 is driven σ so that the paper runs completely in the running direction, that is, runs in the reverse direction based on the excess amount of paper running. For example, 18 code plates directly connected to each other rotate. On the circumference of the code plate 18, an optical converter element 19 consisting of a light-emitting element and a light-receiving element is provided. Also, a corker is attached so that the paper 1 The photoelectric converter 19 generates a signal for each inch. This signal is sent to the subtraction signal of the counter 11. Therefore, when the value of the counter 11 becomes zero, the perforation of the paper is at the cutter position. At this time, The counter 11 sends a motor stop signal to the flip-flop circuit 14 to put it in a reset state, stopping the motor 17 and activating the paper cutting mechanism 8. Furthermore, the stop signal is sent to the flip-flop circuit 14. In preparation for the next printing, the arithmetic circuit 10 sets the arithmetic result in the counter 11. On the other hand, the flip-flop circuit 18 alternately switches the output state 6i each time a stop signal is input, and the gate circuit 15. The gate circuit 15 converts the input positive/negative signals into positive/negative, negative/positive signals alternately by the first stop signal, the 21st stop signal, etc. and input it to the motor control circuit 16.

In the original embodiment, a negative A/H signal, that is, an instruction in the reverse direction is given. Therefore, the remaining paper, that is, the paper to be printed next, is fed backwards, and the amount of backward feeding is until the above-mentioned counter value becomes zero. Therefore, the next printing can be performed without any problems as described in FIG.

As is clear from the following explanation, the present invention is capable of cutting paper without adjusting the equivalent paper cutting mechanism even if the printing paper is changed, and the paper cutting control is easy to handle when changing the paper. It becomes a method. Therefore, if the present invention is applied to a printing apparatus, it will be extremely advantageous in terms of operational convenience and precision in cutting paper.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a conventional paper cutting mechanism, and Fig. 2 is a schematic diagram 2 for explaining the paper cutting method of the present invention.
FIG. 3 is a block diagram of an example of implementing the paper cutting control method of the present invention. In the figure, lid paper, 4 a printing section, 8 a paper cutting mechanism, 10 an arithmetic circuit, and IT a counter. Agent Patent Attorney Sada Igeta - Figure 1 Figure 2 Figure 3 Figure 3

Claims (1)

[Claims] comprising a printing device and a paper cutting mechanism disposed at a predetermined paper perforation distance (n) from the printing unit of the printing device, the paper cutting mechanism cutting the paper along the perforation. In the paper cutting control device that performs
Note: When cutting paper that has a perforation interval different from the predetermined perforation interval along the perforation, in addition to feeding the paper by the regular amount, cut the perforation between the predetermined paper and the paper. Calculate the difference in intervals and convert the difference to an integer (
n) Perform a multiplication operation, set the result of the operation in a counter, and in response to the paper feed operation, subtract the value of the counter and feed the paper an additional 11 times until it becomes zero.
After cutting the desired m paper at this extra feed position, the value of the counter that is set again is set to zero in preparation for the next printing operation. Paper cutting control method.