JP3004161U - Cutter jam prevention device for facsimile machine - Google Patents

Abstract

(57) [Summary] [Purpose] To automatically eliminate cutter jams. A planetary gear mechanism is included in an interlocking connecting mechanism 21 for interlockingly connecting a stepping motor 20 for driving a facsimile apparatus, a document conveying roller of a transmitting unit, a platen roller of a receiving unit and a cutter of a recording paper cutting unit 23
A lock device 24 and a cutter jam prevention device are provided, and the cutter jam prevention device includes a limit switch 51, a controller 19a including a microcomputer for controlling the stepping motor 20, a memory 19b, and a display 19c. And a control device 19 which

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fax machine which can automatically eliminate a cutter jam when a cutter bites a recording sheet to cause a so-called cutter jam.

[0002]

[Prior art]

 To explain the outline of the facsimile apparatus, as shown in FIG. 10, it includes a transmission unit 1, a reception unit 2, and a recording paper cutting unit 3, and the transmission unit 1 is arranged along a conveyance direction A of a document G. And a document conveying roller 5 including a front paper separating roller 5a, a rear paper separating roller 5b, a pair of upper and lower paper take-in rollers 5c, a transmission side platen roller 5d, and a pair of upper and lower sending rollers 5e. A sensor (not shown) that has an elastic body 6 that comes into contact with each of the paper separation rollers 5a and 5b and a reading head 7 and that detects a plurality of originals G when they are inserted into the insertion opening 8. The document transport roller 5 is driven to rotate on the basis of a detection signal from the sheet separation rollers 5a and 5b and the elastic bodies 6 and 6, and a plurality of documents G supplied between them are moved back and forth along the transport direction A. Slightly misaligned The original G, which has been separated and has passed between the paper separating rollers 5a and 5b and the elastic bodies 6 and 6 by the separating action, is sandwiched by a pair of upper and lower paper take-in rollers 5c and 5c to move forward. After being conveyed, the transmission side platen roller 5d presses it against the reading head 7, the information written on the original G is read by the head 7, and then the pair of upper and lower feeding rollers 5e conveys it to the outside from the take-out port 9. The information read by the read head 7 is immediately transmitted.

The receiving unit 2 includes a recording head 11 and a receiving-side platen roller 12 that abuts on the head 11, and the recording signal is recorded by the recording head 11 on a recording paper P drawn from roll paper. By rotating the platen roller 12, the recording paper P on which the received signal is recorded is sent out from the sending port 13 of the case body S to the outside.

The recording paper cutting section 3 is composed of a cutter 16 fixed to the support shaft 15 and a fixed blade 17 facing the cutter 16 with the recording paper P interposed therebetween. By reciprocally rotating the recording paper P by a predetermined angle, the recording paper P sent from the receiving unit 2 is cut and separated by the cutter 16 and the fixed blade 17 as shown in FIG. 11 (a). ing.

In the above configuration, due to abrasion of the cutter 16 and the fixed blade 17, the recording paper P is caught between the cutter 16 and the fixed blade 17 and the cutter 16 is lowered as shown in FIG. 11B. If a dead point cannot be reached and a so-called cutter jam occurs, leaving it as it is will cause a paper jam of the recording paper P and an accident such as an overload on the drive motor that drives the cutter 16 and burning. May occur.

Therefore, conventionally, when a cutter jam occurs, the stop button is immediately pressed to stop the drive of the cutter 16, and then the recording paper P sandwiched between the cutter 16 and the fixed blade 17 is manually removed. I am trying.

[0007]

[Problems to be solved by the device]

 In the above conventional configuration, it is necessary to constantly monitor whether or not a cutter jam has occurred during reception, and if a cutter jam occurs, immediately stop the cutter drive and remove the cutter jam. It has to be solved manually, which is extremely troublesome and troublesome. In view of the above-mentioned conventional problems, the present invention is designed to automatically eliminate a cutter jam when a cutter bites a recording sheet to cause a so-called cutter jam. The purpose is to provide a protection device.

[0008]

Means for Solving the Problems In order to achieve the above object, a device according to claim 1 conveys an original document, and a transmitting unit for reading and transmitting a record of the original document and recording a reception signal on a recording paper. At the same time, a receiving section that sends out the recording sheet recording the received signal and a recording sheet cutting section that separates the recording sheet sent out from the receiving section by a cutter that reciprocally rotates in conjunction with the forward rotation of the drive motor. In the facsimile apparatus including the above, a control device for detecting that the cutter has caught the recording paper and driving the drive motor in the reverse direction is provided.

A second aspect of the invention is the device of the first aspect, wherein the control device detects a detector from the start of forward movement of the cutter to the end of backward movement, and a controller for controlling the drive motor. The controller counts the number of forward rotation steps of the drive motor, compares and calculates the number of steps with the number of steps set in the memory program, and receives the detection signal from the detector. When the number of steps of the drive motor coincides with the set number of steps, the drive motor is reversely driven by the detection signal.

According to a third aspect of the present invention, a document is conveyed, a transmission unit that reads and transmits a record of the document, a reception signal is recorded on a recording sheet, and a recording sheet on which the reception signal is recorded is recorded. In a facsimile apparatus having a receiving section for sending out and a recording sheet cutting section for separating the recording sheet sent out from the receiving section by a cutter that reciprocally rotates in conjunction with the forward rotation of a drive motor, the cutter is a recording sheet. It is provided with a control device that detects that the drive motor has been bitten in and reversely drives the drive motor, and detects that when the reverse rotation drive continues for a predetermined time or more and stops the drive motor. It is a special feature.

A fourth aspect of the invention is the device of the third aspect, wherein the control device detects a detector from the start of forward movement of the cutter to the end of return movement, and a control device for controlling the drive motor. The controller counts the number of forward rotation steps of the drive motor, compares and calculates the number of steps with the number of steps set in the memory program, and receives the detection signal from the detector. When the number of steps of the drive motor coincides with the set number of steps, the drive signal is driven in reverse by the detection signal, and the number of reverse steps of the drive motor is counted, and the number of steps and the memory program are stored. If the number of steps of the drive motor matches the set number of steps while receiving the detection signal from the detector, It is characterized in that the operation of the drive motor is stopped by the detection signal.

According to a fifth aspect of the present invention, an original document is conveyed by rotating the original document conveyance roller, and at the same time, a transmission unit for reading and transmitting a record of the original document and a reception signal by rotationally driving the platen roller. In a facsimile apparatus provided with a receiving section for recording the recording signal on the recording sheet and sending out the recording sheet on which the received signal is recorded, and a recording sheet cutting section having a cutter for separating the recording sheet sent out from the receiving section. An interlocking connecting mechanism is provided to select one or two of the document conveying roller, the platen roller, and the cutter, which are suitable for interlocking with the drive motor. A control device that detects that the cutter reciprocatingly interlocking via the interlocking coupling mechanism bites the recording paper and drives the drive motor in the reverse direction. The feature is that it is provided.

According to a sixth aspect of the present invention, an original document is conveyed by rotating the original document conveyance roller, and at the same time, a transmission unit for reading and transmitting a record of the original document and a reception signal by rotationally driving the platen roller. In a facsimile apparatus provided with a receiving section for recording the recording signal on the recording sheet and sending out the recording sheet on which the received signal is recorded, and a recording sheet cutting section having a cutter for separating the recording sheet sent out from the receiving section. An interlocking connecting mechanism is provided to select one or two of the document conveying roller, the platen roller, and the cutter, which are suitable for interlocking with the drive motor. When the cutter that reciprocates in conjunction with the interlocking coupling mechanism engages the recording paper, it drives the drive motor in the reverse direction, and A cutter jam prevention device in a facsimile machine, comprising a control device for detecting the reverse rotation drive for a predetermined time or longer and stopping the drive motor.

A seventh aspect of the present invention is the device according to any one of the first to sixth aspects, wherein the detector comprises a limit switch.

The invention according to claim 8 is the device according to any one of claims 1 to 7, characterized in that the drive motor is a stepping motor.

[0016]

[Action]

 In the invention according to claim 1, when the cutter bites the recording paper to generate a so-called cutter jam, the control device drives the cutter drive motor in the reverse direction on the basis of the detection signal for detecting the so-called cutter jam, and the cutter is moved to the original position. Since it is returned to the position of, the cutter jam can be automatically cleared. Therefore, unlike the prior art, there is no need to constantly monitor during reception or manually clear paper jams, which saves labor.

According to the second aspect of the invention, the detector detects from the start of the forward movement of the cutter to the end of the backward movement, and the controller counts the number of forward rotation steps of the drive motor. The number of steps and the number of steps set in the memory program are compared and calculated, and if the number of steps of the drive motor matches the set number of steps while receiving the detection signal from the detector, Since the drive motor is driven in the reverse direction, it is possible to reliably detect the occurrence of the cutter jam and automatically eliminate it.

According to the third aspect of the present invention, when a cutter jam occurs, the cutter drive motor can be reversely driven to automatically eliminate the cutter jam, and the reverse rotation of the drive motor can be performed. When the drive continues for a predetermined time or longer, the cutter drive motor is forcibly stopped by the control device based on the detection signal that detects it, so there is no risk that the reverse rotation drive of the drive motor will continue due to a malfunction. .

According to the invention of claim 4, when a cutter jam occurs, the cutter drive motor can be reversely driven to automatically eliminate the cutter jam, and the reverse rotation of the drive motor can be performed. While counting the number of steps, the number of steps and the number of steps set in the program of the memory are compared and calculated, and the number of steps of the drive motor becomes equal to the set number of steps while receiving the detection signal from the detector. When they do, the operation of the drive motor is stopped by the detection signal, so that it is possible to reliably eliminate the possibility that the reverse drive of the drive motor will continue due to an erroneous operation.

According to the invention of claim 5, the cutter jam can be automatically eliminated by driving the drive motor in the reverse direction, and the drive motor is also used for driving the document transport roller and the platen roller. Therefore, the manufacturing cost can be reduced and the weight of the facsimile device can be remarkably reduced.

According to the invention of claim 6, it is possible to automatically eliminate the cutter jam by driving the drive motor in the reverse direction, and it is feared that the reverse drive of the drive motor may continue due to an erroneous operation. In addition, since the drive motor is also used for driving the original feeding roller and the platen roller, the manufacturing cost can be reduced and the weight of the facsimile device can be remarkably reduced. it can.

According to the invention as set forth in claim 7, since an inexpensive and highly reliable limit switch is used as a detector for detecting the forward movement start to the backward movement end of the cutter, the production cost can be reduced. It is possible to eliminate the cutter jam without fail.

In the invention according to the eighth aspect, since the drive motor is a stepping motor, drive control of the cutter or the like can be reliably performed.

[0024]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a stepping motor (driving motor) 20 for driving a facsimile apparatus (see FIG. 10) and an interlocking connecting mechanism 21 for interlockingly connecting the document conveying roller 5, the platen roller 12 and the cutter 16. It has a planetary gear mechanism 23 arranged in the machine frame 22 and a lock device 24, and is additionally provided with a cutter jam prevention device which is an embodiment of the present invention.

The cutter jam prevention device includes a limit switch (detector) 51, which will be described later, and a control device 19 including a controller 19a including a microcomputer for controlling the stepping motor 20, a memory 19b, and a display device 19c. It is configured.

The planetary gear mechanism 23 is rotatably fitted to a pivot shaft 26 projecting from the vertical wall portion 22 a of the machine frame 22 and is also fitted to the drive shaft of the stepping motor 20. Sun gear 28 meshing with 27, a small gear 29 smaller in diameter than the sun gear 28 that is concentrically integrally projected on the sun gear 28, a first planetary gear 30 meshing with the small gear 29, and a second planetary gear The first and second planetary gears 30, 31 having a gear 31 are rotatably attached to the tips of the first and second swing arms 32, 33 which are rotatably fitted to the pivot shaft 26. The drive gear 27 is normally and reversely rotated by the stepping motor 20 to revolve the first and second planetary gears 30 and 31 along the sun gear 28 via the sun gear 28. With it, it can be rotated.

According to the above configuration, since the first and second planetary gears 30 and 31 are meshed with the small gear 29 having a smaller diameter than the sun gear 28, the first and second planetary gears are connected to the sun gear 28. The planetary gear mechanism 23 can be downsized as compared with the case where the 30 and 31 are directly meshed.

An arcuate small-diameter portion and an arcuate large-diameter portion are formed on the outer peripheral surface of the cylindrical shaft portion 33 a fitted to the pivot shaft 26 of the second swing arm 33, and between the large and small portions. A pair of left and right step portions 35a and 35b are formed, and an arc-shaped plate portion 36 that abuts the small diameter portion integrally projects with a ring-shaped shaft portion 32a that fits on the pivot shaft 26 of the first swing arm 32. It has been set up.

Around the sun gear 28, a driven gear 38a for a document transport roller that is interlocked with the document transport roller 5, an intermediate gear 38b for a document transport roller that meshes with the driven gear 38a for the document transport roller, and A platen roller driven gear 39 interlockingly connected to the platen roller 12, a cutter driven gear 40a interlockingly connected to the cutter 16 support shaft 15, and a cutter intermediate gear 40b meshing with the cutter driven gear 40a. Are rotatably fitted to support shafts 41a to 41e projectingly provided on the vertical wall portion 22a of the machine frame 22 at predetermined intervals in the circumferential direction, and the first planetary gear 30 is driven by the original conveying roller. It is located between the gear 38a and the cutter intermediate gear 40b and is configured to be selectively meshable with both gears 38a and 40b. The second planetary gear 31 conveys the original document. It is located between the roller intermediate gear 38b and the platen roller driven gear 39, and is configured to be selectively meshable with both gears 38b, 39.

The lock device 24 has a rotating body 43 that is rotatably fitted to the support shaft 41 b, and first and second lock members 44 and 45 integrally provided on the rotating body 43. The first lock member 44 is substantially F-shaped, and is provided with a member main body 44a extending from the rotating body 43 in the substantially upper radial direction, and a protrusion provided at a tip portion of the member main body 44a with a predetermined gap α therebetween. The second lock member 45 is formed of a pair of locked pieces 44b and 44c that are held, and the second lock member 45 includes a member main body 45a extending from the rotating body 43 in a substantially downward radial direction, and a lock piece integrally projecting from the member main body 45a. 45b and.

Further, a rod-shaped first engaging portion 46 is provided on the arc-shaped plate portion 36 of the first swing arm 32 toward the first lock member 44, and a side surface of the first engaging portion 46 has a concave shape. Second engaging portion 47 is formed, and the second swinging arm 33 is formed with a protruding third engaging portion 48 toward the second lock member 45, and is disposed on the horizontal wall portion 22b of the machine frame 22. The plunger 49a of the provided solenoid 49 is connected to the second lock member 45, and the spring 50 is stretched between the second lock member 45 and the machine frame 22.

Further, one step portion 35a of the second swing arm 33 serves as a fourth engagement portion, and one side edge 36a of the plate portion 36 of the first swing arm 32 facing the fourth engagement portion has a fifth engagement portion. It is regarded as a division.

In the above structure, the first planetary gear 30 is driven by the driven gear for the document transport roller by fitting the gap α between the lock pieces 44 b and 44 c of the first lock member 44 and the first engaging portion 46. 38a and the cutter intermediate gear 40b can be locked in a neutral position where they do not mesh (see FIGS. 3 to 5), and the lock piece 44b of the first lock member 44 and the second engagement portion 47 are engaged with each other. As a result, the state in which the first planetary gear 30 is engaged with the cutter intermediate gear 40b can be locked (see FIG. 8), and the lock piece 45b of the second lock member 45 can be engaged with the third engaging portion 48. By engaging them, the second planetary gear 31 can be locked so as not to mesh with the intermediate gear 38b for the document conveying roller (see FIG. 7), and the fourth and fifth engaging portions 35a, 36a are engaged with each other. Match Accordingly, it is possible to second planetary gear 31 is locks so do not mesh with the platen roller driven gear 39 (see FIG. 8).

In FIG. 1, reference numeral 51 denotes a limit switch (detector) for detecting the forward movement start to the backward movement end of the cutter 16, and its detection portion 51a is integrally formed concentrically with the cutter driven gear 40a. When the cutter 16 is not in operation, the detecting portion 51a is engaged with the cam groove 52a of the cam roller 52 to be turned off, and the cam roller 52 rotates from this state. As a result, the detection unit 51a is pushed in and turned on, and the stepping motor 20 is controlled by the controller 19a based on the detection signal. Reference numeral 53 is a link pin protruding from the driven gear for cutter 40a, which is connected to a link (not shown) that interlocks with the cutter 16.

The operation will be described based on the above configuration. In the reception mode, as shown in FIG. 4, by engaging the first locking member 44 with the first engaging portion 46, the first planetary gear 30 is moved to the driven gear 38a for the document conveying roller and the cutter. It suffices to lock the intermediate gear 40b in a neutral position where it does not mesh with the intermediate gear 40b and drive the stepping motor 20 in the reverse direction to rotate the drive gear 27 in the counterclockwise direction B. As a result, the sun gear 28 rotates clockwise C, the second planetary gear 31 revolves clockwise C and meshes with the driven gear 39 for the platen roller, and the second planetary gear 31 counterclockwise. The driven gear 39 for the platen roller is rotated in the clockwise direction C to rotate to B, and the platen roller 12 is rotated in synchronization with this, and the recording paper P is sent out. Received information is recorded (see FIG. 9).

In the transmission mode, as shown in FIG. 5, by engaging the first locking member 44 with the first engaging portion 46, the first planetary gear 30 is driven and the driven gear 38a for the document conveying roller is driven. The intermediate gear 40b for the cutter and the intermediate gear 40b are not locked, and the stepping motor 20 is normally driven to rotate the drive gear 27 in the clockwise direction C. As a result, the sun gear 28 rotates in the counterclockwise direction B, the second planetary gear 31 revolves in the counterclockwise direction B to be meshed with the intermediate gear 38b for the document feeding rollers, and the second planetary gear 31 moves. It rotates in the clockwise direction C and rotates the driven gear 38a for the document conveying roller through the intermediate gear 38b for the document conveying roller in the clockwise direction C, and in synchronization with this, the document G is conveyed by the document conveying roller 5. The information written on the document G is read by the reading head 7 (see FIG. 9).

In the copy mode, as shown in FIG. 6, the solenoid 49 is operated to unlock the lock device 24, and the stepping motor 20 is driven in reverse to drive the drive gear 27 in the counterclockwise direction B. Just rotate it. As a result, the sun gear 28 rotates in the clock direction C, the first and second planetary gears 30 and 31 revolve in the clockwise direction C, and the first planetary gear 30 meshes with the driven gear 38a for the original conveying rollers. Then, the second planetary gear 31 meshes with the driven gear 39 for the platen roller, and the reception mode and the transmission mode described above are entered, and the document G is transported by the document transport roller 5, and the document G is written on the document G by the reading head 7. The read information is read, the platen roller 12 is rotated and the recording paper P is sent out, and the read information is recorded on the recording paper P by the recording head 11 (see FIG. 9).

In the cutter forward rotation mode, as shown in FIG. 7, the lock device 24 is unlocked, the stepping motor 20 is normally driven, and the drive gear 27 is rotated in the clockwise direction C. . As a result, the sun gear 28 rotates counterclockwise B, the first planetary gear 30 revolves counterclockwise B and meshes with the cutter intermediate gear 40b, and the first planetary gear 30 clockwise C. And rotates the driven gear 40a for the cutter in the clockwise direction C through the intermediate gear 40b for the cutter, and the support shaft 15 for the cutter 16 is rotated in synchronization with this, and the recording paper P is cut by the cutter 16. This can be done (see Fig. 9). In this case, the second planetary gear 31 also revolves in the counterclockwise direction B, but since the third engaging portion 48 engages with the second lock member 45, this second planetary gear 31 is used for the document conveying rollers. It does not mesh with the intermediate gear 38b.

In the cutter reverse rotation mode, as shown in FIG. 8, the solenoid 49 is operated to engage the first lock member 44 with the second engagement portion 47, and the stepping motor 20 is driven in reverse. The drive gear 27 may be rotated in the counterclockwise direction B. As a result, the sun gear 28 rotates clockwise C, the first planetary gear 30 rotates counterclockwise B, and the cutter driven gear 40a rotates counterclockwise B via the cutter intermediate gear 40b. Then, the support shaft 15 for the cutter 16 is rotated in conjunction therewith, and the cutter 16 can be reversed and returned to its original position. As a result, the cutter 16 bites the recording paper P and a so-called cutter jam occurs. Even if it does, the cutter jam condition can be automatically cleared. In this case, the first and second planetary gears 30 and 31 try to revolve in the clockwise direction C, but the first planetary gear 30 is formed by the first locking member 44 engaging the second engaging portion 47. , Its revolution is prevented, the meshing state with the cutter intermediate gear 40b is maintained, and the second planetary gear 31 is engaged with the platen roller by the fourth and fifth engaging portions 35a, 36a engaging each other. It is prevented from meshing with the driven gear 39.

The operation of the control device 19 in the above-described cutter forward rotation mode and cutter reverse rotation mode will be described with reference to FIG. First, in the forward rotation mode (see FIG. 7), the cutter 16 is moved forward by driving the stepping motor 20 forward (S1), and the forward rotation step of the stepping motor 20 counted by the counter of the controller 19a is started. When the number reaches a predetermined number of steps (for example, 100 steps) (S2), the detecting portion 51a of the limit switch 51 comes out of the cam groove 52a and comes into contact with the outer peripheral surface of the cam roller 52, and the limit switch 51 is in the ON state. become . Next, the counter of the controller 19a counts the number of forward rotation steps of the stepping motor 20 (S3 to S6), and the number of forward rotation steps is compared with the number of steps set in the program of the memory 19b. If the detecting section 51a of the limit switch 51 returns to the cam groove 52a before the number of forward rotation steps of the stepping motor 20 matches the set number of steps (for example, 350 steps), and the limit switch 51 is turned off. In this case, since the recording paper P is being cut normally by the cutter 16 (FIG. 11A), the drive of the limit switch 51 is stopped (S5).

When the limit switch 51 is in the ON state and the number of forward rotation steps of the stepping motor 20 matches the set number of steps (for example, 350 steps) (S6), it is determined that a cutter jam has occurred [Fig. 11 (b)], the solenoid 49 is operated to enter the cutter reverse rotation mode (see FIG. 8), the stepping motor 20 is reversely driven (S7), and the cutter 16 is moved back to eliminate the cutter jam.

Then, the controller 19a counter counts the number of reverse rotation steps of the stepping motor 20 (S8 to S10), and compares the number of reverse rotation steps with the number of steps set in the program of the memory 19b, When the detection unit 51a of the limit switch 51 returns to the cam groove 52a and the limit switch 51 is turned off before the reverse rotation step number of the stepping motor 20 matches the set step number (for example, 300 steps). Since the cutter 16 has returned to the original position, the operation of the stepping motor 20 is stopped and the cutter jam is displayed on the display 19c (S12).

When the limit switch 51 is in the ON state and the number of reverse rotation steps of the stepping motor 20 matches the set number of steps (for example, 300 steps) (S10), the reverse rotation drive of the stepping motor 20 is stopped (S11), The cutter jam is displayed on the display 19c (S12). As a result, it is possible to reliably eliminate the possibility that the reverse driving of the stepping motor 20 will continue due to a malfunction.

[0044]

[Effect of device]

 In the invention according to claim 1, when the cutter bites the recording paper to generate a so-called cutter jam, the control device drives the cutter drive motor in the reverse direction on the basis of the detection signal for detecting the so-called cutter jam, and the cutter is moved to the original position. Since it is returned to the position of, the cutter jam can be automatically cleared. Therefore, unlike the prior art, there is no need to constantly monitor during reception or manually clear paper jams, which saves labor.

According to the second aspect of the invention, the detector detects from the start of the forward movement of the cutter to the end of the backward movement, and the controller counts the number of forward rotation steps of the drive motor. The number of steps and the number of steps set in the memory program are compared and calculated, and if the number of steps of the drive motor matches the set number of steps while receiving the detection signal from the detector, Since the drive motor is driven in the reverse direction, it is possible to reliably detect the occurrence of the cutter jam and automatically eliminate it.

According to the third aspect of the present invention, when a cutter jam occurs, the cutter drive motor can be reversely driven to automatically eliminate the cutter jam, and the reverse rotation of the drive motor can be performed. When the drive continues for a predetermined time or longer, the cutter drive motor is forcibly stopped by the control device based on the detection signal that detects it, so there is no risk that the reverse rotation drive of the drive motor will continue due to a malfunction. .

According to the fourth aspect of the invention, when a cutter jam occurs, the cutter drive motor can be reversely driven to automatically eliminate the cutter jam, and the reverse rotation of the drive motor can be performed. While counting the number of steps, the number of steps and the number of steps set in the program of the memory are compared and calculated, and the number of steps of the drive motor becomes equal to the set number of steps while receiving the detection signal from the detector. When they do, the operation of the drive motor is stopped by the detection signal, so that it is possible to reliably eliminate the possibility that the reverse drive of the drive motor will continue due to an erroneous operation.

According to the fifth aspect of the invention, the cutter jam can be automatically eliminated by driving the drive motor in the reverse direction, and the drive motor is also used for driving the original feeding roller and the platen roller. Therefore, the manufacturing cost can be reduced and the weight of the facsimile device can be remarkably reduced.

According to the sixth aspect of the invention, the cutter jam can be automatically eliminated by driving the drive motor in the reverse direction, and the reverse drive of the drive motor may continue due to an erroneous operation. In addition, since the drive motor is also used for driving the original feeding roller and the platen roller, the manufacturing cost can be reduced and the weight of the facsimile device can be remarkably reduced. it can.

According to the invention as claimed in claim 7, since a cheap and highly reliable limit switch is used as a detector for detecting the forward movement start to the backward movement end of the cutter, the manufacturing cost can be reduced. It is possible to eliminate the cutter jam without fail.

According to the eighth aspect of the invention, since the drive motor is a stepping motor, drive control of the cutter or the like can be reliably performed.

[Brief description of drawings]

FIG. 1 is a perspective view of an interlocking connection mechanism provided with a cutter jam prevention device in a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the interlocking coupling mechanism.

FIG. 3 is a front view of the interlocking coupling mechanism in a standby mode.

FIG. 4 is a front view of the interlocking coupling mechanism in a reception mode.

FIG. 5 is a front view of the same interlocking coupling mechanism in a transmission mode.

FIG. 6 is a front view of the interlocking coupling mechanism in a copy mode.

FIG. 7 is a front view of the interlocking coupling mechanism in a cutter forward rotation mode.

FIG. 8 is a front view of the same interlocking connection mechanism in a cutter reverse mode.

FIG. 9 is a flowchart showing an operating state of the cutter jam prevention device.

FIG. 10 is a vertical sectional view of the facsimile apparatus.

11A is a schematic side view showing a state in which the recording paper is cut by the cutter, and FIG. 11B is a schematic side view showing a state in which a cutter jam has occurred.

[Explanation of symbols]

 1 Transmitter 2 Receiver 3 Recording Paper Cutting Unit 12 Platen Roller 16 Cutter 19 Controller 19a Controller 19b Memory 20 Stepping Motor (Drive Motor) 21 Interlocking Connection Mechanism 24 Lock Device 28 Sun Gear 30 First Planetary Gear 31 Second Planet Gear 49 Solenoid 51 Limit switch (detector)

Claims (8)

[Scope of utility model registration request] 1. A transmission unit that conveys an original document, reads a transmission of the original document and transmits the same, a reception unit that records a reception signal on a recording sheet and sends out a recording sheet on which the reception signal is recorded, and a drive motor. In a facsimile machine equipped with a recording paper cutting unit that separates the recording paper sent from the receiving unit by a cutter that reciprocally rotates in conjunction with the normal rotation drive of the above, it is detected that the cutter has caught the recording paper. A cutter jam prevention device in a facsimile machine, characterized in that a control device for reversely driving the drive motor is provided. 2. The control device includes a detector that detects from the start of the forward movement of the cutter to the end of the backward movement of the cutter, and a controller that controls the drive motor, and the controller includes a forward rotation step of the drive motor. While counting the number, the number of steps and the number of steps set in the program of the memory are compared and calculated, and when the number of steps of the drive motor matches the number of set steps during reception of the detection signal from the detector, 2. The cutter jam prevention device in a facsimile apparatus according to claim 1, wherein the drive motor is configured to be driven in reverse by the detection signal. 3. A transmission unit that conveys an original document, reads a transmission of the original document, and transmits it, a reception unit that records a reception signal on a recording sheet and sends out the recording sheet on which the reception signal is recorded, and a drive motor. In a facsimile machine equipped with a recording paper cutting unit that separates the recording paper sent from the receiving unit by a cutter that reciprocally rotates in conjunction with the normal rotation drive of the above, it is detected that the cutter has caught the recording paper. A cutter jam prevention device for a facsimile machine, characterized in that a control device is provided for driving the drive motor to rotate in reverse, and detecting the stop of the drive motor when it continues for a predetermined time or longer to stop the drive motor. . 4. The control device includes a detector that detects from the start of the forward movement of the cutter to the end of the backward movement of the cutter, and a controller that controls the drive motor, and the controller has a forward rotation step of the drive motor. While counting the number, the number of steps and the number of steps set in the program of the memory are compared and calculated, and when the number of steps of the drive motor matches the number of set steps during reception of the detection signal from the detector, The drive motor is driven in reverse by the detection signal, and the number of reverse rotation steps of the drive motor is counted, and the number of steps is compared with the number of steps set in the memory program, and the detector outputs When the number of steps of the drive motor matches the set number of steps while receiving the detection signal, the operation of the drive motor is stopped by the detection signal. The cutter jam prevention device in a facsimile apparatus according to claim 3, wherein the device is configured as described above. 5. A document transporting roller is driven to rotate to transport the document, and a platen roller is driven to rotate to transmit a document to read and transmit a record of the document, and a received signal is recorded on a recording sheet. A document feeding roller and a platen roller, wherein the document feeding roller and the platen roller are provided with a receiving unit that sends out a recording sheet on which the received signal is recorded, And out of the cutter
A cutter that is provided with an interlocking coupling mechanism for interlockingly coupling one or two of the appropriate ones to the drive motor, and reciprocally rotates in conjunction with the forward rotation of the drive motor via the interlocking coupling mechanism. A cutter jam prevention device in a facsimile machine, which is provided with a control device for detecting that the recording paper is bitten into the recording paper and driving the drive motor in the reverse direction. 6. A document feeding roller is driven to rotate to feed the document, and a platen roller is driven to rotate to transmit a reading unit for reading and transmitting the record of the document, and a reception signal is recorded on the recording paper. A document feeding roller and a platen roller, wherein the document feeding roller and the platen roller are provided with a receiving unit that sends out a recording sheet on which the received signal is recorded, And out of the cutter
A cutter that is provided with an interlocking coupling mechanism for interlockingly coupling one or two of the appropriate ones to the drive motor, and reciprocally rotates in conjunction with the forward rotation of the drive motor via the interlocking coupling mechanism. Is provided with a control device that detects that the recording paper has been bitten, drives the drive motor in the reverse direction, and detects it when the reverse drive continues for a predetermined time or more and stops the drive motor. Cutter jam prevention device in a facsimile machine characterized by: 7. The cutter jam prevention device in a facsimile apparatus according to claim 1, wherein the detector comprises a limit switch. 8. The cutter jam prevention device in a facsimile apparatus according to claim 1, wherein the drive motor is a stepping motor.