JPS6131665B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording paper cutting control system, and more particularly, to a recording paper cutting control method for automatically cutting a rolled recording paper used in a facsimile machine or the like at a predetermined position after recording. This paper relates to a recording paper cutting control method.

Conventionally, for example, in facsimile machines,
The recording paper wound into a roll is continuously fed. In order to cut this series of fed recording sheets, a person manually cuts the sheets at appropriate positions along a fixed blade provided on the facsimile machine. With such manual cutting, it is not possible to cut the recording paper to a fixed size. Furthermore, even if a series of recording sheets is later cut with scissors or the like, the process remains complicated.

Therefore, this invention overcomes the above-mentioned drawbacks and
An object of the present invention is to provide a recording paper cutting control system that can automatically cut fed recording paper to a fixed size.

Furthermore, another object of the present invention is to provide a recording paper cutting control method that can reduce the occurrence of waste (dummy) recording paper in a cutting device that automatically cuts recording paper to a fixed size. .

In a preferred embodiment of the present invention, a cutting mechanism capable of cutting successively fed recording paper at an arbitrary position based on an electrical signal is combined with an electrical circuit control method for controlling the electrical signal. The cutting mechanism includes a fixed blade, a rotating blade, a flange with a pin fixed to the rotating blade, a link rotatably engaged with the pin and a plunger of an electromagnetic solenoid, and a flange with a pin fixed to the rotating blade. A cam, a limit switch interlocked by the cam, a drive roller rotated by a pulse motor, a pressure roller pressed by the drive roller, the pressure roller and a timing belt, a recording head pressure roller connected by a pulley, and the drive roller. It is equipped with an electromagnetic clutch that transmits rotational force to the rotary blade, and is configured to cut the fed paper at any position. The control system for this cutting mechanism includes two pulse counters and a timer, and the excitation pulse of the pulse motor is applied to the pulse counter immediately after the start of recording on the recording paper and from T seconds after the end of recording. Therefore, count them alternately to a predetermined constant number N.
After counting one pulse, the solenoid is energized to rotate the rotary blade to perform a cutting operation. Furthermore, the control device is equipped with a third pulse counter, and after cutting the finally recorded recording paper (the last recording paper of single feeding or continuous feeding), the third pulse counter The pulse motor is reversely rotated by the number of pulses N2 to cause the leading edge of the recording paper to run backwards to reduce the margin dummy, and after starting recording again, the electromagnetic clutch is energized to rotate the rotary blade and the cam and limit switch are used to rotate the rotary blade to a predetermined value. This is a control method that allows the rotating blade to wait in position.

The above objects and other objects and features of the present invention will become more apparent from the detailed description given below with reference to the drawings.

FIG. 1 is a schematic partial sectional front view showing an example of a facsimile apparatus to which the present invention is applied. Second
FIG. A and FIG. 2B are schematic left side views of the cutting device of FIG. 1, and FIG. 2A shows a waiting state for cutting;
FIG. 2B shows the state immediately after cutting.

In FIG. 1, the long paper 1 wound into a roll is placed at the recording head 1a.
The received information is recorded while the recording head is pressed against the pressure roller 1b, and the drive roller 2 and the pressure roller 3
It is fed in the direction of arrow A. The drive roller 2 is rotationally driven by a pulse motor (not shown) as a drive source via a belt 5 wound around a pulley 4 fixed to one end of a rotating shaft 2a of the drive roller 2. . The fixed blade 6 is fixedly provided on the chassis 7. The blade part 6a of the fixed blade 6 has a long blade 1
It is formed in a direction substantially perpendicular to the feeding direction (direction of arrow A), and is provided so as to be in contact with the paper surface of the long letter 1. The side view of this fixed blade 6 is shown in detail in FIGS. 2A and 2B. That is, a fulcrum 6b and a stopper 6c are formed on the side surface of the fixed blade 6. Furthermore, centering on this fulcrum 6b,
A torsion spring 6d is provided so that one side contacts the stopper 6c and the other side contacts a pin 8 fixed to the chassis 7. This twist spring 6d
Due to the elastic force, the blade portion 6a is pressed against a rotary blade 9, which will be described later, with an appropriate pressure.

The rotary blade 9 has an axis 9a that is rotatably extended over the chassis 7 in parallel with the fixed blade 6.
has. This rotary blade 9 is provided with a blade portion 9b that is slightly oblique to the rotation axis direction and rotates integrally with the blade portion 9b. As can be seen more clearly with reference to FIG. 2A or FIG. 2B, the shaft 9a of the rotary blade 9
A flange 11 having a pin is fixed to one end of the flange 11. A link 12 is rotatably provided on the pin 10. The other end of this link 12 is connected to the tip of the plunger 13a of the electromagnetic solenoid 13,
For example, they are rotatably connected by a screw 13b. The electromagnetic solenoid 13 is fixed to the chassis 7 by a mounting bracket 14.

At one end of the shaft 9 of the rotary blade 9, inside the flange 11, there is a cam 1 having a notched recess 15a on the periphery.
5 is fixed. The limit switch 16 is fixed to the chassis 7 with screws or the like, and the actuator 16a of the limit switch 16 is in contact with the periphery of the cam 15.

An electromagnetic clutch 17 is provided at the other end of the shaft 2a of the drive roller 2, and the electromagnetic clutch 17 is biased when the limit switch is turned on. In addition, 17a is a coil of the electromagnetic clutch 17, 17b is a stator fixed to the shaft 2a, and 17
c is an armature with gears. A portion of the electromagnetic clutch 17 including the coil 17a is prevented from rotating by a stopper or the like (not shown). The gear of Amarch Your 17c is chassis 7.
An intermediate gear 19 rotatably interposed in the
, and meshes with a gear 20 fixed to a shaft 9a at the other end of the rotary blade 9. This intermediate gear 19 transfers the rotational force of the shaft 2a of the drive roller to the shaft 9a of the rotary blade 9.
It is a mediating gear that transmits information to the

Further, a pulley 2 is attached to the rotating shaft of the pressing roller 3.
1 is fixed, and a pulley 22 is also fixed to the rotating shaft of the recording head pressing roller 1b.
A timing belt 23 is wound around these pulleys 21 and 22. Furthermore, the pulley 22 has a one-way clutch 22a on its shaft.
is inserted, and the clutch meshes or engages only when the recording head pressing roller 1b is rotated in the reverse direction, and the rotational force of the pressing roller 3 is transmitted to the recording head pressing roller 1b.

2A shows the state in which the long letter 1 is waiting to be cut, and FIG. 2B shows the state immediately after the long letter 1 has been cut.

The operation of the cutting device, which is the background of one embodiment of this invention, will be explained with reference to FIGS. 2A and 2B. In the standby state of Figure 2A, long letter 1
is sandwiched between the driving roller 2 and the pressing roller 3 and is guided by a guide member (not shown) and fed in the left direction of the arrow. The surface of the long letter 1 is in contact with the upper end of the blade portion 6a of the fixed blade 6, and the long letter 1 is fed through the gap between the fixed blade 6 and the rotary blade 9.

Incidentally, the actuator 16a of the limit switch 16 is fitted into the recess 15a of the cam 15, and the limit switch 16 is turned off. Therefore, coil 1 of the electromagnetic clutch
7a (see FIG. 1) is in a deenergized state, and the rotational force of this shaft 2a is not transmitted to the rotary blade 9.
The blade portion 9b of the rotary blade 9 is the blade portion 6 of the fixed blade 6.
When viewed from the axis 9a with respect to a, the angle β is as shown in the figure.
pin 1 of flange 11
0 are separated by an angle α (β<α). Unless a disconnection signal is given to the electromagnetic solenoid 13,
This disconnection waiting state continues.

Next, when a cutting signal is given to the electromagnetic solenoid 13, this electromagnetic solenoid 13 is energized and the second
As shown in Figure B, the link 12 is attracted in the direction of arrow B. Accordingly, the flange 11 is connected to the shaft 9a of the rotary blade.
is rotated by an angle α in the direction of arrow C. In the middle of this rotation, that is, at the point when the rotary blade 9 has rotated by an angle β, the long letter 1 is connected to the blade 6a and the blade 9b.
It is cut by. The time required for cutting is a very short time, for example, about several tenths of a second. At this time, the actuator 16a of the limit switch 16 contacts the circumferential surface of the cam 15 further than the recess 15a. Therefore, the actuator 16a is pushed and the limit switch is turned on.

In response to turning on of the limit switch 16, the coil 17a (see FIG. 1) of the electromagnetic clutch 17 is energized and connects the shaft 2a of the drive roller 2 and the geared armature air 17c so that they can rotate together. Therefore, the geared armature 17c rotates with the rotation of the shaft 2a, and this rotational force is transmitted to the gear 20 fixed to the shaft 9a of the rotary blade 9 via the gear of the armature 17c and the intermediate gear 19. The rotary blade 9 further rotates in the C direction. When the actuator 16a fits into the recess 15a of the cam 15 (as shown in FIG. 2A), the limit switch 16 is turned off and the electromagnetic clutch 17 is turned off.
is deenergized and the rotation of the rotary blade 9 is stopped. In this way, the waiting state for cutting a long letter is realized. Of course, if the device including this cutting device is a facsimile device, the facsimile recording operation will be performed without interruption throughout the entire operating period of the cutting device, and long letters will also be fed continuously. it is obvious.

Next, in correlation with the feeding of the recording paper 1 and the recording state,
An electric circuit control system according to an embodiment of the present invention will be explained. FIG. 3A shows the cutting device of FIG.
2 is a schematic layout diagram showing rollers and the like arranged in a straight line along the feeding direction of recording paper 1. FIG. FIG. 3B is a diagram showing the running state of the recording paper 1 in correspondence with the positions shown in FIG. 3A, that is, the recording position B, the driving and pressing roller position C, and the fixed blade position D. FIG. 4 is a time chart of an electric circuit (not shown) that controls the cutting mechanism.

Now, from the sending side of the facsimile device, n (n≧
2) A case will be described in which two original sheets are sent in succession and are received and recorded on the receiving side. In order to make the following explanation clear, it will be divided into three modes. That is, there are three modes: initial mode, continuous mode, and end mode.

The initial mode includes preprocessing when receiving the first sheet of a document and processing related thereto. first,
As shown in FIG. 3B, the recording paper 1 is pressed for a certain length by the recording head pressing roller 1b and the recording head 1a.
It is made to protrude in the traveling direction from position B, and is held between the driving roller 2 and the pressing roller 3 at position C. The pulse generator, pulse motor, timer, and first, second, and third pulse counters are activated by the rise of the document present signal shown in FIG. 4j. These pulse generators, pulse motors, timers, and pulse counters are
Its configuration and operation are well known, and illustration thereof will be omitted here. In addition, the pulse counter used here has a preset number of pulses N.
This is a counter that derives a significant signal when it counts . Now, recording of the first sheet is started by the document recording signal shown in FIG. 4k. In response to the start of this recording, a pulse generator (not shown)
A pulse is supplied to a pulse motor (not shown), and the drive roller 2 is rotationally driven by this pulse motor, and at the same time, a pulse is also supplied to a first pulse counter (not shown; see FIG. 4n). , count the number of pulses. Further, in response to the start of recording, the limit switch 16 (see FIGS. 1 and 4r) is turned on, energizing the electromagnetic clutch 17 and rotating the rotary blade 9. When the actuator 16a of the limit switch 16 fits into the recess of the cam 15, the rotation of the rotary blade 9 is stopped, and the blade is in a waiting state for cutting as shown in FIG. 2A. After the first pulse counter has counted a predetermined number N1 of pulses, a cutter signal (see FIG. 4p) is derived for t seconds. This cutter signal energizes the electromagnetic solenoid 13 to cut the recording paper 1 at position D (FIG. 3B). This cutting is done on the tip dummy (the margin part of the tip).
This is the cut of E (Figure 3B). Immediately after cutting, the limit switch 16 is turned on, the electromagnetic clutch 17 is energized, and the rotary blade 9 rotates, returning to the cutting waiting state as shown in FIG. 2A. The steps up to this point are the initial mode. Of course, the recording operation continues throughout these operation periods.

Next, the continuous mode will be described. for example,
This mode is related to cutting the first sheet of recording paper and starting recording of the subsequent second sheet of original. When the recording of the first sheet continues and reaches the end, (3rd B
c), then a timer (not shown; see FIG. 4m) is started based on this end signal. This timer detects the passage of time T, starts recording the second sheet, and starts the second pulse counter (not shown; see Figure 4 o), which counts the pulses. have them do it. During this time T seconds, the pulse motor is fast-forwarded. This fast-forwarding may be performed, for example, by increasing the oscillation frequency of a pulse oscillator (using an oscillator whose oscillation frequency can be controlled by voltage, etc.). Alternatively, the pulses used for feeding normal recording paper may be obtained by dividing the pulse output from the reference oscillator by a certain frequency, and only during fast forwarding, the switching means (based on the recording end signal) may be used to change the frequency. It is also possible to use a pulse output with a high frequency by changing the ratio of . That is, the recording paper 1 is rotated at a speed higher than that of a normal pulse motor, and the recording paper 1 is advanced quickly. The state immediately after the second pulse counter has counted N1 pulses is shown in FIG. 3B e. At this time, the cutter signal is derived for t seconds, as shown in FIG. 4p.
This cutter signal energizes the electromagnetic solenoid 13,
Recording paper 1 (particularly the first recording paper) is cut to form paper pieces (first recording paper pieces). Immediately after disconnection, the limit switch 16 is turned on and the electromagnetic clutch 17 is energized. Since the second sheet is being recorded, the drive roller 2 is rotating, and the rotational force of the drive roller 2 is transmitted to the rotary blade 9, the rotary blade 9 is rotated, and the actuator 16a is activated by the cam 15. This rotation (of the rotary blade 9) is stopped when the blade enters the recess 15a. In this way,
The state is again in the state of waiting for disconnection as shown in FIG. 2A. of course,
During this time, the recording of the second sheet is being continued. (Situation in Figure 3B f). This continuous mode is
The subsequent (k-1)th and kth sheets (however, k
= 2, 3, ..., n) is performed in exactly the same manner, and the first, second, and
..., the (n-1)th recording paper piece is automatically formed. Preferably, the first pulse counter and the second pulse counter are selected alternately to count the number of pulses N1.

Now, let's talk about the end mode. It is assumed that the nth recording is the final recording. When the recording of the nth sheet is completed, the timer starts based on this end signal and fast-forwards the recording paper for T seconds (Fig. 3B, g).
reference). However, based on the fall of the document presence/absence signal shown in FIG. 4j, the fast forward operation continues even after T seconds have elapsed. T seconds after the end signal, the second pulse counter is activated and counts the number of pulses up to N1. Fast forwarding is also performed during this counting, and when counting is completed, fast forwarding is stopped. The state of the recording paper in this stopped state is clearly shown in FIG. 3B h. After counting N1, a cutter signal is derived, the electromagnetic solenoid is energized, and the nth sheet is cut at cutting position D (see FIGS. 3A and 3B). The mode of cutting is exactly the same as in the continuous mode. In response to the fall of this cutter signal, the third pulse counter is activated and the pulse motor is rotated in reverse. The reverse rotation of this pulse motor is
For example, this may be done by reversing a particular phase of a pulse motor having multiple phases. Also,
Phase reversal can be easily accomplished by electronic switching means. When the pulse motor rotates in the reverse direction, the pressure roller 2 is rotated in the reverse direction. At this time, the timing belt 2 wound around the pulley 21
3 (see FIG. 1), this reverse rotation is transmitted to the pulley 22. At this time, the one-way clutch 22a is engaged, and this reverse rotational force is transmitted to the recording head pressing roller 1b, which is rotated in the reverse direction. As the rollers 2 and 1b rotate in reverse, the recording paper 1 is pulled back in a direction opposite to the normal feeding direction. This amount of pulling back is equal to the length of the recording paper corresponding to N2 times counted by the predetermined third pulse counter. After counting the number of pulses N2, the pulse motor is stopped (see Figure 4l). The steps up to this point form the end mode.

This control system then enters a standby state until the arrival of the next document presence/absence signal.

The above was a case where n sheets of originals (n≧2) were sent in succession. However, single delivery, i.e. only one
Sometimes only one sheet is sent. At this time, the above-mentioned initial mode and end mode are used. These judgments are made based on the document presence/absence signal shown in FIG. 4j.

Note that once the paper has been received even once (regardless of whether one or n copies have been received), it is not necessary to manually protrude a certain length and hold it between the drive roller 2 and the pressure roller 3 in the initial mode. do not have. This is clear from the fact that once a document is received, the recording paper is automatically pulled back in the opposite direction by going through the end mode.

In this way, according to this embodiment, the recording paper can be automatically cut to a certain size. Further, since the feeding of the recording paper is controlled by electrical control and the recording paper is returned by a certain length after cutting the last sheet, the dummy length of the recording paper can be suppressed to a minimum. Furthermore, since the initial settings are automatically made after the end mode, there is no need for manual setting, which eliminates complexity.

In the above embodiment, two counters, the first counter and the second counter, are used to count N1 pulses, and they are activated alternately. However, it is not necessary to use two counters, and only one counter is used. A similar function can be achieved even with a pulse counter. In this case, a small amount of counter activation/inactivation control circuit may be added.

Further, in the above embodiment, the interval dummy based on the on-time T of the timer in continuous mode can be easily changed by adjusting the setting of this time T.

Furthermore, according to the embodiment described above, it is clear that regardless of the size of the transmitted document, the document is automatically cut according to the size.

As described above, according to the present invention, recording paper is cut by a rotary blade, and the rotation of this rotary blade is controlled in correlation with an electric signal, so that the recording paper is automatically cut. It can be cut to a certain size, eliminating all the complications of conventional methods. Furthermore, in this invention, when n (n≧2) originals are continuously recorded, a margin is formed between each original, and when this margin passes through a cutter, the recording paper is cut, and the final sheet is Since the recording paper is automatically run in the opposite direction after cutting the original, it is possible to minimize the number of dummies on the recording paper, and even when recording multiple originals continuously, the recording is almost continuous. The recording time can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a schematic partial sectional front view of a cutting device showing an interesting embodiment as a background of the present invention.
2A and 2B are schematic diagrams of the left side of FIG. 1, with FIG. 2A showing a standby state for cutting, and FIG. 2B showing a state immediately after cutting. FIG. 3A is a schematic layout diagram in which rollers and the like are arranged in the feeding direction of the fed paper. FIG. 3B is an explanatory diagram illustrating the running state of the recording paper. FIG. 4 is a time chart of the electrical circuit controlling the cutting device. In the figures, the same reference numerals indicate the same or corresponding parts, 1 is a long letter, 1a is a recording head part, 1
b is a recording head pressing roller, 2 is a drive roller, 2
a is its axis, 3 is a pressure roller, 6 is a fixed blade, 6a
9 is the blade, 9 is the rotary blade, 9a is the shaft, 9b is the blade, 11 is the flange, 12 is the link, 13 is the electromagnetic solenoid, 15 is the cam, 15a is the recess, 16
is the limit switch, 16a is the actuator,
17 is an electromagnetic clutch, 20 is a gear, 21 and 22 are pulleys, 22a is a one-way clutch, and 23 is a timing belt.

Claims (1)

[Scope of Claims] 1. A recording paper cutting control system including a cutting mechanism for separating the recorded portion from the longitudinal recording paper after performing a certain recording on the longitudinal recording paper, which comprises n( When recording n≧2) sheets of originals continuously, the recording paper is continuously fed without stopping until recording of the n sheets of originals is completed, and during that time, when recording of one sheet of originals is completed, A blank space between each document is created by waiting for the next document to be recorded until the recording paper is fed a predetermined amount, and then, when the recording paper is fed a predetermined amount and the margin portion passes through the cutting mechanism, the recording paper is A recording paper cutting control system in which the recording paper is cut at that position, and further the recording paper is reversely fed by a second fixed amount after cutting the final sheet of the document. 2. The longitudinal recording paper is conveyed and controlled by a recording paper feeding device, and the recording paper feeding device includes: a drive pulse generation means; and a pulse motor energized by the pulse from the drive pulse generation means. The recording paper cutting control system according to claim 1, comprising: a rotating roller rotationally driven by the pulse motor. 3. The recording paper cutting control method according to claim 2, wherein the first fixed amount of feeding is controlled based on counting the drive pulses. 4. Cutting the recording paper according to claim 3, wherein the first fixed amount of feeding is performed by fast forwarding for a fixed period of time after the end of the recording, and then by counting a fixed number of the driving pulses. control method. 5. The reverse feed is performed by rotating the pulse motor in reverse, and the second constant amount of reverse feed is controlled based on counting the number of pulses when rotating the pulse motor in reverse. The recording paper cutting control method according to any one of items 1 to 4. 6. The recording paper cutting control system according to claim 1, wherein the cutting mechanism is put into a cutting standby state in response to the start of the first recording. 7. Cutting the recording paper according to any one of claims 1 to 6, in which the leading margin portion preceding the recording portion is cut in response to being fed a certain amount after the initial recording start. control method.