JPS6146383B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a double-edge cutting device for recorded continuous paper that is attached to a printer.

Printers that record on continuous paper include typewriter printers and thermal printers.
The paper feeding methods used during recording in these printers include a method that moves the paper at the same speed regardless of the recording and non-recording portions, and a method that moves only the recording portion slowly depending on the recording speed. There is a method in which the recording medium is moved, and the non-recording portion is moved quickly. The present invention particularly provides a device for cutting both edges of recorded continuous paper, which is attached to a printer in which the conveyance speed of the latter is not constant.

Continuous paper for recording with the above printers includes high-quality foam paper, carbon-backed copying paper, pressure-sensitive copying paper, heat-sensitive recording paper, carbon-backed thermal recording paper, etc., depending on the purpose.

By the way, these continuous forms have marginal holes on both sides to make it easier to feed the paper, and in the case of multiple sheets of recording paper, they are glued to prevent misalignment. .
Therefore, after recording, it is necessary to cut and separate the marginal hole portion and the glued portion. As a method for this cutting and separation, there is a device called a burster or a separator. However, these devices are configured as completely separate devices from the printer, and are not suitable for being integrated into the printer.Moreover, in order to connect directly to a printer where the paper transport speed is not constant, it is necessary to This is impractical as other means of detecting and controlling slack and tension must be employed.

Incidentally, in a printer where the paper conveyance speed is not constant, the following problem occurs if the paper tension is not controlled. In other words, if the conveyance speed of the edge cutting device is faster than the conveyance speed of the printer and the tension of the paper becomes strong, the paper feeding accuracy (feeding dimension) will be excessively stretched by the tension of the edge cutting device, and the paper will not be able to function properly. This makes it impossible to feed the paper, causing misregistration of the paper. In some cases, this may cause cutting of the paper (for example, at perforated areas). On the other hand, if the conveyance speed of the edge cutting device is slower than the conveyance speed of the printer and the tension is weak, the paper will sag between the printer and the edge cutting device, causing jams (a condition in which the paper becomes crumpled). . Then, the edges of the paper are not cut uniformly, resulting in meandering cuts.

Therefore, the present inventors have studied the development of a device that is directly connected to a printer where the paper conveyance speed is not constant and that cuts both ends of recorded continuous paper in accordance with the recording method of the printer, and has the following configuration. This is the completed invention consisting of: That is, the configuration of the present invention is such that, as shown in FIG. A detection unit 3 detects slack and tension in the recording paper due to changes in paper conveyance speed, and a slit processing unit that interrupts paper feeding and selvedge cutting operations when the slack reaches a set value. 4, and is characterized in that the slit processing section is operated in conjunction with a detection section.

With the above configuration, the binaural cutting device 2 for recorded continuous paper is used in conjunction with the printer, and as shown in Fig. 4, it is installed on the side of the printer 1 so that it can be rotated so that the paper can be easily replaced. be done. The specific configuration and method of operation will be explained below.

First, the configuration will be explained. The detection unit 3 for detecting slack and tension in the recording paper is composed of a roll 2 (which may be a bar) supported by an arm 1 and a limit switch 3. There is. The arm 1 that supports the roll 2 is supported by a support shaft 4, and the support shaft 4 is fixed to a frame. The other end of the arm 1 is connected to a spring 5, so that it can perform seesaw movement using a support shaft 4 as a fulcrum. The other end of the spring is fixed to the frame. The roll 2 is in contact with the recorded continuous paper and is freely rotatable. The limit switches 3 and 3' are installed at positions where they can come into contact with the arm 1 when it seesaws (for example, but not limited to, on both sides of the arm 1 as shown in Figure 1), one for starting the motor and the other for starting the motor. It is configured to affect stopping.

The slitting section 4, in which recorded paper is fed and edges are cut, is composed of a roll 6 having a paper feeding function and a slit rotary knife 7, and is disposed at a position subsequent to the detection section 3. ing. At least both ends of the roll 6 are provided with slit grooves in which a rotary knife 7 can be set, and the rotary knife, which is rotatably supported, is set therein. The number of rotating knives can be increased as required. The rotating knife is driven by transmitting the rotational force of the roll 6 through the paper. The recorded paper is fed by a roll 6, and both ends of the roll 6 are provided with protrusions 8 that fit into marginal holes provided in the edges of the paper.

Next, regarding the operation of the binaural cutting device, the second
The description will start from a state in which the device is installed in the printer 1 and paper is being fed as shown in the figure. As mentioned above, the type of printer 1 is one in which the paper conveyance speed is not constant (for example, only the area to be recorded is moved slowly according to the recording speed, and the non-recording area is moved quickly). )from,
The speed of movement of the recorded sheet towards the binaural cutting device will exhibit a similar movement. Now, the printer 1 finishes recording the paper in the recording section and reaches the non-recording section. The non-recording portion moves quickly without being recorded. This quick movement reduces the tension on the recorded paper to a second level.
As shown in the figure, it becomes loose. Along with this, the arm 1 which was balanced with the tensile force by the spring 5
is pulled by the spring 5 and displaced to the position indicated by the dotted line using the support shaft 4 as a fulcrum, and presses the installed limit switch 3 for starting the motor. (The wiring diagram of the limit switch is shown in Figure 3.) This starts the motor 9, rotates the roll 6 and the rotary knife 7, and simultaneously pulls the loose recorded paper while simultaneously touching both ears. disconnect. The recorded paper, which has become loose in this way, is fed at a constant speed and becomes tensioned again at a certain time, and the arm 1 leaves the limit switch 3. However, even if you are far away, auxiliary relay 1
0, the circuit is held, and the roll 6 and rotating knife continue to rotate. As the tension of the paper increases, the arm 1 is gradually displaced against the tensile force of the spring 5, and now comes into contact with and presses the limit switch 3' installed on the other side. This causes the motor 9 to stop. Since the recorded paper is sequentially fed due to changes in the conveyance speed, it becomes loose again after a certain period of time. The above-described operation will then be repeated again.

As described above, the device for cutting both edges of recorded continuous paper according to the present invention can separate and remove both edges in conjunction with the operation of the printer by being attached to a printer where the conveyance speed of the paper is not constant. The problems that occur when the paper tension is strong and when the paper tension is weak are completely eliminated, and the separation work that was previously done manually or by a completely independent device after recording has been completely eliminated. This is extremely effective in that it can be omitted.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a binaural cutting device according to the present invention. FIG. 2 is a diagram showing the side view thereof. FIG. 3 is an electrical wiring diagram of a limit switch that is installed in the slack detection section of the recorded paper and drives the motor 9, where 2'a is a contact that closes when the limit switch 3 is pressed, 2b is a contact that opens when the limit switch 3 is pressed, 10 is an auxiliary relay for holding, and 10a is a normally open contact of 10. FIG. 4 shows a state in which the apparatus of the present invention is attached to a printer main body. DESCRIPTION OF SYMBOLS 1...Printer, 2...Both-edge cutting device, 3...Both-edge cutting device for paper, 4...Slitting section, 1...Arm, 2...Roll (or bar), 3, 3...Limit switch, 4...Spindle, 5 ...Spring, 6... Paper feed roll, 7... Slitter, 8... Protrusion, 9... Motor, 10... Auxiliary relay for hold, 2'a... Contact closed when pressed, 2b... Contact open when pressed, 10a... Normally open contact, 11 , 11'... shaft, 12, 12'... bearing,
13, 13'... (not shown) shaft, 14, 14'...
(not shown) Bearing fittings, A, A'... Recorded paper, B, B'... Both edges of the paper.

Claims (1)

[Claims] 1. Printer 1 in which the conveyance speed of recording paper is not constant
The recorded continuous paper binaural cutting device 2 attached to the printer includes a detecting section 3 for catching the slack and tension of the recording paper due to changes in the recording paper conveyance speed in the printer, and a detecting section 3 for detecting slack and tension of the recording paper when the recording paper reaches a set value. The slitting section 4 is configured to cut both ears at the same time as the paper is fed, and to interrupt the paper feeding and the edge cutting operation when the tension reaches a set value. A double-edge cutting device for recorded continuous paper, characterized in that the slitting section is operated in conjunction with a detection section. 2. Claim 1, characterized in that the detection unit 3 for detecting slack and tension of the recording paper is composed of a roll 2 supported by an arm 1 and a limit switch 3. The device described. 3. The device according to claim 2, wherein the arm 1 has a support shaft 4 as a fulcrum and the other end is connected to a spring 5. 4. The apparatus according to claim 2, wherein the arm 1 is capable of seesaw movement with a support shaft 4 as a fulcrum as the tension of the recording paper changes. 5. The apparatus according to claim 2, wherein the arm 1 is adapted to come into contact with a limit switch for starting and stopping a motor 9 that drives the roll 6 during the seesaw movement. 6 Slit processing section 4 where both ears cutting operation is performed
2. The apparatus according to claim 1, wherein the apparatus comprises a roll 6 having a paper feeding function and a rotary knife 7. 7. The device according to claim 6, wherein the rotating knife 7 is driven by a force transmitted from a roll 6 which is rotationally driven by a motor 9 connected to a power source via the limit switch. . 8. The device according to claim 1, wherein the binaural cutting device 2 is rotatably attached to a side surface of the printer 1.