JP3073146B2 - Drive of facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small and thin facsimile apparatus, and more particularly to a drive apparatus for a facsimile apparatus in which a document is conveyed and a recording sheet is conveyed by the same roller.

[0002]

2. Description of the Related Art In general, a facsimile apparatus (hereinafter simply referred to as a facsimile) reads an original, transmits a character / image signal of the original, prints a received signal on a recording paper, and further transmits a character / image of the original. The function to copy the image to the recording paper is the minimum necessary function. To achieve the above function, a driving device for transporting the original and the recording paper is required, but in a conventional facsimile driving device,
A reading sensor for reading an original, and a recording head for printing received contents and the like on recording paper, each include a dedicated paper feed roller and a motor for driving the paper feed roller. Therefore, since two paper feed rollers and two motors are used, it has been an obstacle to miniaturization, thinning, weight reduction, and cost reduction. In recent years, as a solution to this problem, a facsimile driving apparatus has been proposed in which two sets of paper feed rollers and a motor are used in common, and an eccentric cam is provided to greatly simplify the structure (for example, Japanese Patent Application Laid-Open No. Hei 5-37754). JP-A-5-91242).

[0003]

However, in the configuration proposed in the above publication, a first one-way clutch for transmitting rotational power to the paper feed roller and a second one-way clutch for transmitting rotational power to the eccentric cam are provided. Two sets of one way clutches are required, one way clutch. Since these one-way clutches are disposed very close to the paper feed roller and the eccentric cam, a one-way clutch having a high transmission torque is required, and the facsimile machine can be reduced in size, thickness, and cost. There was a problem that hinders the conversion.

[0004] Also, for processing when paper is jammed,
Means for separating the reading sensor and the recording head from the paper feed roller had to be provided in the housing. If the paper is to be pulled out without such a separating means, an excessive force is required due to the deceleration mechanism constituting the apparatus, and there is a problem that the paper is broken.

Further, in consideration of portability due to miniaturization and thinning, it is necessary to be able to use sheet-shaped thermosensitive recording paper (hereinafter, sheet-shaped recording paper) cut into a fixed form. In the operation of a normal facsimile machine, when a document or recording paper is inserted, a small bit is inserted between the paper feed roller and the reading sensor or recording head so that the leading edge does not shift, and then any of transmission, reception, and copying is performed. Select the mode. However, in the configuration of the above publication, when a fixed sheet of recording paper is used, for example, when a document is inserted first to make a copy, the recording head is separated from the paper feed roller, and the leading end position of the recording paper is There is a problem that there is no means for determining Even if there is a means for determining the position, since the eccentric cam rotates only in one direction, there is a problem that the leading end position of the previously inserted document is shifted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and is intended to provide a facsimile apparatus which feeds a document and a recording sheet by a single paper feed roller and has at least a minimum necessary function. It is a first object of the present invention to provide a drive device for a facsimile machine that can reduce the size, thickness, and cost of the facsimile machine without using a one-way clutch. In addition to the first problem, a second object is to provide a facsimile apparatus driving device that can easily pull out a sheet when the sheet is jammed. It is a third object of the present invention to provide a facsimile apparatus driving device capable of accurately positioning the leading edge of a sheet in addition to the first object.

[0007]

The present invention has the following arrangement to solve the above-mentioned problems. A facsimile apparatus driving device having a reading sensor for reading a document, a recording head for printing on a recording sheet, a roller for feeding the document, and a roller for feeding the recording sheet, wherein an outer casing of the facsimile is formed. A housing, a single paper feed roller for feeding the original and the recording paper, and a reading sensor and a recording head that are arranged to face each other via the paper feed roller and that are arranged obliquely to the longitudinal direction of the housing, A cam gear having an eccentric cam member coaxially with the rotation axis of the paper feed roller and arranged to be bidirectionally rotatable; and a cam gear fixedly mounted coaxially with the rotation axis of the paper feed roller and driving the paper feed roller A roller gear, a motor that generates a driving force for the paper feed roller, a swing arm that rotates according to the rotation direction of the motor, and a swing arm that is mounted on the swing arm. Having a configuration of a drive device of a facsimile apparatus characterized by comprising a pair of planet gears for selectively driving said roller gear cam gear by moving.

According to a second aspect of the present invention, the pair of planetary gears mounted on the swing arm have an extremely small rotating torque on at least one of them, and drive the cam gear with a first-level planetary gear; The driving device for a facsimile apparatus according to claim 1, wherein the roller gear is driven by a planetary gear having a second height.

According to a third aspect of the present invention, the pair of planetary gears are set in a standby state in a state in which the planetary gears of the first height are engaged with the cam gear during standby for transmission, reception or copying. A driving device for a facsimile apparatus according to claim 2 is provided.

According to a fourth aspect of the present invention, the pair of planetary gears are in a standby state in a state in which the planetary gears of the second height are engaged with the roller gears when waiting for transmission, reception or copying. A driving device for a facsimile apparatus according to claim 2 is provided.

According to a fifth aspect of the present invention, the eccentric cam member moves the recording head away from the paper feed roller during transmission, moves the reading sensor away from the paper feed roller during reception, and reads the recording head with the recording head during copying and in a standby state. 2. The facsimile apparatus driving device according to claim 1, wherein the sensor is pressed against the paper feed roller.

[0012]

According to the present invention, the roller and the cam gear are selectively driven by the swing arm and the planetary gear according to the above configuration, so that when the motor rotates forward, the paper feed roller is driven to convey the original or the recording paper. When the motor rotates in the reverse direction, the eccentric cam is driven to switch the operation mode of the facsimile apparatus. Therefore, no one-way clutch is required. Also, by engaging the first-gear planetary gear with the cam gear during standby for transmission, reception, or copying operation, the rollers are not connected to the drive system, so that the rollers are in a free state. Can be easily pulled out.

When a recording paper wound mainly in a roll (hereinafter referred to as a roll-shaped recording paper) is used, if the planetary gear is engaged with the roller gear, the recording head is in a state of sandwiching the recording paper. The roller does not rotate because it is pressed against the paper feed roller and the roller gear is connected to the drive system.
The tension required for manually cutting the recording paper can be provided. At the time of paper jam processing, an operation sequence for engaging with the cam gear may be provided by software. Further, when a roll-shaped recording paper is mainly used, the recording head is separated from the paper feed roller during transmission, and the reading sensor is separated from the paper feed roller during reception, and the recording head and the reading sensor are separated during copying and standby. If the cam curve of the eccentric cam is changed so as to make the pressure contact, the operation load can be further reduced.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a top view showing an embodiment of a facsimile apparatus (hereinafter simply referred to as a facsimile) according to the present invention, FIG. 2 is a side view showing a drive section of the facsimile apparatus, and FIG. 3 shows an internal configuration of the facsimile apparatus. FIG. 4 is a side view, and FIG.
FIG. 2 is a sectional view of a main part showing a configuration of a planetary drive gear.

1 to 3, a housing 1 forms an outer facsimile housing, and a transmission original is inserted from an original insertion opening 1a at a front end (lower side in FIG. 3) of the housing 1, and a central portion of the housing 1 is formed. The document is discharged from the upper document discharge port 1b (left side in FIG. 3). Further, the recording paper is inserted from a recording paper insertion opening 1c provided at the original discharge opening 1b, and is discharged from a recording paper discharge opening 1d provided at the original insertion opening 1a. Between the document insertion port 1a and the recording paper discharge port 1d, the recording paper insertion port 1a and the document discharge port 1b
The partition plates 1e and 1f are arranged between them.

The reading sensor 2 is movably mounted on an angle 5 fixed to the frame 4, and is urged by a spring (for example, a coil spring) 7 to press against a paper feed roller (hereinafter simply referred to as a roller) 9. Is done. The recording head 3 is movably mounted by a regulating member 3a implanted in the recording head 3 so as to be loosely fitted into the regulating hole 6a of the arm 6 and not to move more than necessary. It is pressed against the roller 9. A pin 6c that comes into contact with the eccentric cam portion 12a of the cam gear 12 is erected on the arm 6, and is rotatably attached to the frame 4 with the fulcrum 6b as a fulcrum. At 10, the pin 6c is urged to always contact the eccentric cam portion 12a.

The reading sensor 2 and the recording head 3 are mounted so as to face the roller 9 and are arranged obliquely with respect to the longitudinal direction of the housing 1, for example, at about 45 °, so that the paper can be fed smoothly and the overall size of the apparatus can be reduced. , Thinner.
A motor 11 to be described later is provided in a space behind the housing 1.
And a circuit board (not shown).

The roller 9 has a roller shaft 9a rotatably supported on the frame 4 by a bearing 9b. As shown in FIGS. 1 and 4, the outer end of the roller shaft 9a on the frame 4 has a roller shaft 9a. And a cam gear 12 rotatably mounted on the roller shaft 9a. The motor 1 to these roller gear 13 and cam gear 12
The transmission of the rotational power is performed by a motor gear 11a fixed to an output shaft of the motor 11, a reduction gear 14, a worm gear 15, a pinion gear 16 formed integrally with the spur gear 15a,
In addition, the driving is performed by selectively transmitting drive gears 17 and 18 attached to a swing arm 19 having a substantially “H” shape that swings according to the rotation direction of the motor 11.

The reduction gear 14 is a two-stage reduction gear in order to increase the power transmission efficiency with the worm gear 15, as shown in FIG. Alternatively, the motor gear 11a and the spur gear 15a may be directly engaged without using the reduction gear. The worm gear 15 converts the position of the rotating shaft to a right angle, and can perform a large reduction in one step with respect to the reduction mechanism using the spur gear train. By arranging the motor 11 horizontally, the worm gear 15 It is smaller and thinner.

As shown in FIGS. 2 and 5, the drive gear (first
17 and 18 are planetary gears of the pinion gear 16 and are rotatably mounted on shafts 19a and 19b set at both ends of the swing arm 19, respectively. Have been. The swing arm 19 is rotatably attached to the shaft 4a erected on the frame 4 via a sleeve 19c erected at the center in the longitudinal direction of the swing arm 19, and the pinion gear 16 is rotatably attached to the sleeve 19c. The drive gear 17 includes a compression spring 17
a provides a very weak rotational load torque.

The cam gear 12 has an eccentric cam portion 12a formed with a maximum radius portion 24 and a maximum radius portion 25 for pressing and releasing the recording head 3 against the roller 9 by contacting the pin 6c, and a cam gear 12 And a cam portion 12b for turning on and off the switch 20 for detecting the rotational position of the motor. Normally, a pulse motor that rotates by a fixed rotation angle with respect to a driving input pulse is used as the motor 11, and the rotational position of the cam 12 can be recognized by counting the number of pulses.
It is possible to abolish.

The operation of the facsimile apparatus configured as described above will be described below. FIG. 6 shows the state of the drive unit when the roller is driven, and FIG. 7 shows the state of the drive unit when the cam is driven. Motor 1
When the motor 1 rotates forward, the pinion gear 16 rotates in the direction of arrow A. When the motor 11 rotates in the reverse direction, the pinion gear 16 rotates in the direction of arrow B.
Rotate in the direction.

(During Roller Driving) In the figure, to shift from the cam driving state to the roller driving state, the motor 11 is rotated forward. When the pinion gear 16 rotates in the direction of arrow A, the swing arm 19 also rotates until the drive gear 17 and the roller gear 13 mesh with each other due to the extremely weak rotational load torque applied to the drive gear 17 by the compression spring 17a. With the rotation of No. 16, it turns in the direction of arrow A. Therefore, the engagement between the drive gear 18 and the cam gear 12 is released. When the shift is completed, the drive gear 17 is normally meshed with the roller gear 13 as shown in FIG.
1 is transmitted to the roller gear 13. Since the roller gear 13 is fixedly mounted on the roller shaft 9a of the roller 9, a rotation operation is transmitted to the roller 9 in a clockwise direction to feed the paper. At this time, the cam gear 12 does not rotate.

(During cam driving) To shift from the roller driving state to the cam driving state, the motor 11 is rotated in the reverse direction. When the pinion gear 16 rotates in the direction of arrow B, the driving gear 1
Due to the extremely weak rotational load torque given to the compression spring 17a by the compression spring 17, the swing arm 19 is also rotated in the direction of arrow B by the rotation of the pinion gear 16 until the drive gear 18 and the cam gear 12 mesh with each other. Therefore, the engagement between the drive gear 17 and the roller gear 13 is released. When the shift is completed, as shown in FIG. 7, the drive gear 18 is normally meshed with the cam gear 12, transmitting the rotational power of the motor 11 to the cam gear 12, and driving the cam gear 12 in a counterclockwise direction. Since the cam gear 12 is rotatably attached to the roller shaft 9a of the roller 9, the roller 9 does not rotate.

Next, the operation of the main part in each mode will be described. The standby state, copy state, and reception state
As shown in FIG. 8, the reading sensor 2 is constantly pressed against the roller 9 by the spring 7. The cam gear 12 includes a pin 6 mounted on the arm 6 at the maximum radius portion 24 of the eccentric cam portion 12a.
The arm 6 is stopped in a position where it contacts the c, that is, in a state where the arm 6 is rotated in the direction of arrow C with the fulcrum 6b as the fulcrum. Therefore, the recording head 3 is pressed against the roller 9 by the spring 8. The driving unit is in the cam driving state shown in FIG.

(Reception) At the time of reception from this standby state,
When a sheet-shaped recording paper is inserted from the housing paper insertion slot 1c, when a recording paper sensor (not shown) detects the sheet-shaped recording paper 21, the motor 11 rotates forward, and the driving unit drives the roller from the cam driving state (FIG. 7). State (FIG. 6). The drive gear 17 meshes with the roller gear 13, and the roller 9 rotates clockwise, so that the leading end 2 to 3 mm of the sheet-shaped recording paper 21 is sandwiched between the recording head 3 and the roller 9. Next, when a start signal for reception is input by operating a start key or the like, the roller 9 rotates clockwise to rotate the sheet-like recording paper 21.
And printing is sequentially performed by the recording head 3 at the same time.

In the case of rolled recording paper, since the recording paper is always sandwiched between the recording head 3 and the roller 9, the driving unit is driven from the cam driving state (FIG. 7) by simply inputting a start signal. In the state (FIG. 6), the roller 9
Rotates clockwise to convey the roll-shaped recording paper, and simultaneously prints sequentially with the recording head 3.

When the receiving operation is completed, the motor 11 is rotated in the reverse direction until the swing arm 19 is rotated to the position immediately before driving the cam gear 12, and the driving unit returns to the standby state (cam driving state (FIG. 7)). I do.

(During Copying) In the case of using a sheet-shaped recording paper at the time of copying, the leading end 2-3 mm of the sheet-shaped recording paper 21 is inserted between the recording head 3 and the roller 9 through the above-described operation. Next, when the document 22 (see FIG. 9) is inserted from the document insertion slot 1a of the housing 1, a document sensor (not shown) detects the document 22, the roller 9 further rotates clockwise, and 3 mm is inserted between the reading sensor 2 and the roller 9. At this time, the cam gear 12 does not rotate because the driving unit remains in the roller driving state (FIG. 6).
The recording head 3 does not separate from the roller 9. Therefore,
When the leading end position of both the inserted sheet-shaped recording paper 21 and the original 22 is not shifted and a copy start signal is input by operating a copy key or the like, the roller 9 rotates clockwise to rotate the sheet-shaped recording paper. The so-called copy, in which the document 21 and the document 22 are simultaneously conveyed and reading and printing are performed simultaneously, is performed.

In the case of roll-shaped recording paper, the recording paper is always sandwiched between the recording head 3 and the roller 9, and when the sensor detects the document 22 (not shown), the drive unit is in a cam driving state (FIG. 7). And the roller is driven (FIG. 6), the roller 9 rotates clockwise and the leading end of the original is 2-3 m.
m is inserted between the reading sensor 2 and the roller 9.
Next, when a copy start signal is input by operating a copy key or the like, the roller 9 rotates clockwise to convey the roll-shaped recording paper and the document 22 at the same time, and perform copying.

When the copying operation is completed, the motor 11 is rotated in the reverse direction until the swing arm 19 is rotated to the position immediately before driving the cam gear 12, and the driving unit is again brought into the standby state (cam driving state (FIG. 7)). .

At the time of transmission, when the original 22 is inserted in the standby state shown in FIG. 8 and the original sensor (not shown) detects the original 22, the motor 11 rotates forward and the drive gear 17 meshes with the roller gear 13, and The driving unit changes from the cam driving state (FIG. 7) to the roller driving state (FIG. 6).
Then, the roller 9 rotates clockwise, and the leading end 2 to 3 mm of the document 22 is read and inserted between the sensor 2 and the roller 9. Next, when a start signal for transmission is input by operating a start key or the like, the motor 11 rotates in the reverse direction to enter a cam driving state (FIG. 7), and the driving gear 18
Is driven in the counterclockwise direction until the cam portion 12b turns on the switch 20. Pin 6c planted on arm 6
Is urged by the tension spring 10 so as to always contact the eccentric cam portion 12a, and therefore moves from the maximum radius portion 24 to the minimum radius portion 25 along the eccentric cam portion 12a. The arm 6 rotates in the direction of arrow D with the fulcrum 6b as a fulcrum, and the recording head 3 is restricted by the regulating hole 6a of the arm 6 from moving in the biasing direction by the spring 8 by the regulating member 3a. After being separated from the roller 9, the transmission state shown in FIG. 9 is obtained. At this time, since the roller gear 13 is not meshed with the driving gear 17, the roller 9 does not rotate.

When the switch 20 is turned on, the motor 11 rotates forward, the driving unit changes from the cam driving state (FIG. 7) to the roller driving state (FIG. 6), and the roller 9 rotates forward to carry the original 22. The reading sensor reads the document 22.
At this time, since the cam gear 12 is not meshed with the drive gear 18, the cam gear does not rotate. Therefore, the recording head 3 is kept in the transmission state shown in FIG. 9, and the recording head 3 is separated from the roller 9, so that the recording paper 22 is not conveyed even if it is inserted.

When the transmission operation is completed, the motor 11 is again rotated in the reverse direction, so that the cam is driven (FIG. 7).
The drive gear 18 drives the cam gear 12 to rotate in the counterclockwise direction until the cam portion 12b turns off the switch 20. The recording head 3 is pressed from the eccentric cam portion 12a to the roller 9 via the pin 6c and the arm 6, and enters a standby state shown in FIG. The drive unit is in a cam drive state (FIG. 7).

The standby state of the drive unit is the cam drive state (FIG. 7).
As described above, the driving gear 17 and the roller gear 1
3 is not engaged. Therefore, the roller 9 is in a free state that is not connected to the drive system. When the paper is pulled in the conveying direction or in the reverse direction, for example, when the paper is jammed, the roller 9 is rotated by being entangled, so that the paper can be moved in either direction. Can be easily pulled out. That is, only the frictional force generated between the original 22 and the reading sensor 2 or between the recording paper 21 and the recording head 3 and the load generated at the bearing 9b of the roller 9 are the loads at the time of pulling out. Equivalent).

When the standby state of the driving unit is set to the roller driving state (FIG. 6), the driving gear 17 and the roller gear 13 are engaged with each other. In this embodiment, a worm (worm gear 15, pinion gear 16) is used for the speed reduction mechanism. The roller 9 cannot be driven in reverse from the driven side (the roller 9), so that the roller 9 does not rotate even if the sheet is pulled in the transport direction or the reverse direction. Even if a speed reduction mechanism using a spur gear is used, the reduction ratio is as large as about 10: 1 and the motor 11 has a static torque called a detent torque. Needs too much power. Such a standby state is preferable when a roll-shaped recording paper is used as the recording paper, and a necessary tension can be added when the recording paper is cut by hand (corresponding to claim 4). In this case, when the paper is jammed, an operation sequence for setting the driving unit to the cam driving state (FIG. 7) by software may be provided.
Further, a state in which the recording head 3 is separated from the roller 9,
That is, by providing an operation sequence for paper jam processing that is the same as the transmission state (FIG. 9), the jammed paper can be more easily pulled out.

Next, another embodiment of the present invention will be described. Another embodiment shown in FIG. 10 to FIG. 12 mainly uses a rolled recording paper,
The cam curve of the eccentric cam portion 12a of the cam gear 12 is changed so that the reading sensor 2 is separated from the paper feed roller 9 at the time of reception, and the recording head 3 and the reading sensor 2 are pressed against each other in the copy and standby states. (Corresponding to claim 5). FIG. 10 shows a state at the time of standby and a copy operation, and FIG. 11 shows a state at the time of transmission operation.

In the drawing, like the recording head 3, the reading sensor 2 is loosely fitted in the regulating hole 5a of the angle 5 by the regulating member 2a erected on the reading sensor 2 and can be moved so as not to move more than necessary. And is pressed against the roller 9 by being urged by the spring 7. A pin 5c that comes into contact with the eccentric cam portion 12a of the cam gear 12 is erected on the angle 5 and is rotatably mounted on the frame 4 with the fulcrum 5b as a fulcrum. Thus, the pin 5c is urged to always contact the eccentric cam portion 12a. The eccentric cam portion 12a of the cam gear 12 and the cam portion 12b abutting on the switch have been changed to the shape shown in the drawing such that the minimum radius portion 25 extends over a long range. Other configurations are the same as those of FIGS. 1 to 9 described above, and the same portions are denoted by the same reference numerals and description thereof will be omitted.

In the facsimile apparatus of another embodiment configured as described above, the operation of the main part will be described assuming that roll-shaped recording paper is used as the recording paper. (Standby and Copying) As shown in FIG. 10, the state of the main part at the time of standby and at the time of copying is such that the reading sensor 2 is urged by the spring to the roller 9 and the recording head 3 is urged by the spring 8. The recording paper 21 is pressed against the roller 9 with the recording paper 21 interposed therebetween. A pin 5c set at an angle 5 of the reading sensor 2 and an arm 6 of the recording head 3
The pin 6c set in the eccentric cam portion 12 of the cam gear 12
The cam gear 12 is stopped at a position where the cam gear 12 comes into contact with the maximum radius portion 24 of FIG. When the document 22 is inserted in this state, a document sensor (not shown) detects the document 22,
When the motor 11 rotates forward and the roller 9 rotates clockwise, the leading end 2 to 3 mm of the document is inserted between the reading sensor 2 and the roller 9. Next, when a copy start signal is input by operating a copy key or the like, the roller 9 further rotates clockwise to convey the recording paper 21 and the original 22 at the same time to perform copying.

(At the time of transmission) At the time of transmission, a standby state (FIG. 1)
When the document 22 is inserted in step 0), a document sensor (not shown) detects the document 22, the motor 11 rotates forward and the roller 9 rotates clockwise, and the sensor 2 reads the leading end 2-3 mm of the document. And the roller 9. Next, when a transmission start signal is input by operating a start key or the like, the motor 11 rotates in the reverse direction, and the cam gear 12 rotates in the counterclockwise direction until the switch 20 is turned on. At this time, the pin 6c set on the arm 6 of the recording head 3 comes into contact with the minimum radius portion 25 of the eccentric cam portion 12a, the arm 6 rotates in the direction of arrow D, and the recording head 3 Separate more. On the other hand, the pin 5c planted at the angle 5 of the reading sensor 2 is held in contact with the maximum radius portion 24 of the eccentric cam portion 12a, and the reading sensor 2 is kept in pressure contact with the roller 9, and the transmission state shown in FIG. Becomes Next, when the motor 11 is rotated forward, the roller 9 rotates clockwise, and the document 22 is conveyed and read by the reading sensor 2. When the transmission operation is completed, the motor 11 rotates in the reverse direction, the cam gear 12 rotates in the counterclockwise direction until the switch 20 is turned off, and returns to the standby state shown in FIG.

(Reception) During reception, when a start signal for reception is input, the motor 11 is switched from the standby state (FIG. 10).
Rotate in reverse, and the cam gear 12 rotates in the counterclockwise direction, and the transmission state shown in FIG. When the switch 20 is turned on, further from this position, the pin 6c of the recording head 3 contacts the maximum radius portion 24 of the eccentric cam portion 12a, and the pin 5c of the reading sensor 2 contacts the minimum radius portion 25 of the eccentric cam portion 12a. The cam gear 12 is rotated. Then, the angle 5 rotates in the direction of arrow E to separate the reading sensor 2 from the roller 9, and the arm 6 rotates in the direction of arrow C to press the recording head 3 against the roller 9. In detecting the rotation stop position of the cam gear 12 in the reception state shown in FIG. 12, the number of drive pulses of the motor 11 after the switch 20 is turned on (reception state (FIG. 11)) is counted. In this embodiment, the rotation angle of the cam gear 12 is about 160 °, and the reduction ratio from the motor 11 to the cam gear 12 is 1/12, so that if the step angle per pulse of the motor 11 is 7.5 °, 12 × 160/7.
The motor 11 may be driven by 5 = 256 pulses. When the transfer is completed, the motor 11 is rotated forward, the roller 9 rotates clockwise, the recording paper 21 is conveyed, and printing is performed by the recording head 3. When the receiving operation is completed, the motor 1
1 rotates in the reverse direction and the cam gear 12 rotates counterclockwise until the switch 20 is turned off, and returns to the standby state shown in FIG. This allows the reading sensor 2 to be
Is separated from the roller 9, so that the operation load can be reduced.

[0042]

As described above, according to the present invention, a roller gear and a cam gear are selectively driven by two planetary gears mounted on a swing arm which rotates in accordance with the rotation direction of a motor, thereby providing a facsimile apparatus. It is possible to provide a facsimile machine that has at least the minimum necessary functions (reception, transmission, copying, etc.), and is small, thin, and inexpensive.

Further, not only recording paper wound in a roll shape on recording paper but also sheet-shaped recording paper cut into a fixed form can be used. A reading sensor and means for separating a recording head from a reading feed roller of a recording head can be used. The processing when the paper is jammed can be easily performed without providing the paper. Further, various changes can be made to the specifications of the entire facsimile apparatus only by changing the operation sequence in a software manner, for example, by giving a necessary tension when the roll-shaped recording paper is manually cut.

When a roll-shaped recording paper is mainly used, the recording head is separated from the paper feed roller at the time of transmission, and the reading sensor is separated from the paper feed roller at the time of reception. By changing the cam curve of the eccentric cam, it is possible to further reduce the operation load. Further, the positioning of the original recording paper is easy.

[Brief description of the drawings]

FIG. 1 is a main part top view of a facsimile apparatus according to one embodiment of the present invention.

FIG. 2 is a side view of a driving unit of the facsimile machine.

FIG. 3 is a side view showing an internal configuration of a main part of the facsimile machine.

FIG. 4 is a cross-sectional view illustrating a configuration of a roller driving unit of the facsimile machine.

FIG. 5 is a sectional view showing a configuration of a planetary drive gear unit of the facsimile apparatus.

FIG. 6 is a side view showing a positional relationship of a planetary drive gear when driving the roller of the facsimile machine.

FIG. 7 is a side view showing a positional relationship of a planetary drive gear when the facsimile apparatus drives a cam.

FIG. 8 is a side view showing the positional relationship of the main part of the facsimile apparatus during standby, reception, and copying.

FIG. 9 is a side view showing a positional relationship of a main part at the time of transmission of the facsimile apparatus.

FIG. 10 is a side view showing a positional relationship of a main part of a facsimile apparatus according to another embodiment of the present invention during standby and copying.

FIG. 11 is a side view showing a positional relationship at the time of reception of the facsimile apparatus of another embodiment.

FIG. 12 is a side view showing a positional relationship of a main part at the time of transmission of the facsimile apparatus of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Read sensor 3 Recording head 9 Paper feed roller 9a Rotating shaft 12 Cam gear 12a Eccentric cam part 13 Roller gear 17, 18 Drive gear 19 Swing arm

Claims (5)

(57) [Claims] 1. A facsimile apparatus driving device including a reading sensor for reading a document, a recording head for printing on a recording sheet, a roller for feeding the document, and a roller for feeding the recording sheet, wherein an outer casing of the facsimile apparatus is provided. A housing to be formed; a single paper feed roller for feeding the original and the recording paper; a reading sensor and a recording head which are arranged to face each other via the paper feed roller and are arranged obliquely to the longitudinal direction of the housing. A cam gear having an eccentric cam member coaxially with the rotation axis of the paper feed roller and arranged bidirectionally rotatable; and a paper gear fixedly mounted coaxially with the rotation axis of the paper feed roller. A roller gear for driving, a motor for generating a driving force for the paper feed roller, a swing arm that rotates in accordance with the rotation direction of the motor, and a switch mounted on the swing arm. Driving device for a facsimile apparatus characterized by comprising a pair of planet gears, a for selectively driving the said roller gear cam gear by the rotation of Guamu. 2. A pair of planetary gears mounted on a swing arm has a very small rotating torque on at least one side, drives the cam gear with a planetary gear having a first height, and has a second height. The facsimile apparatus driving device according to claim 1, wherein the roller gear is driven by a planetary gear. 3. The pair of planetary gears are in a standby state in a state in which a planetary gear of a first height is engaged with a cam gear during standby for transmission, reception or copying. A driving device for the facsimile machine according to the above. 4. The pair of planetary gears are set in a standby state in a state where the planetary gears of the second height are meshed with the roller gears when waiting for transmission, reception or copying. A driving device for the facsimile machine according to the above. 5. The eccentric cam member separates the recording head from the paper feed roller at the time of transmission, separates the reading sensor from the paper feed roller at the time of reception, and connects the recording head and the reading sensor at the time of copying and in a standby state. The facsimile apparatus driving device according to claim 1, wherein the facsimile apparatus is pressed against the facsimile apparatus.