JPH0744623B2 - Transceiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a transmission / reception device that reads information on a document and transmits the information, and records information based on a received signal.

(Prior Art) In many conventional transmission / reception devices, independent motors are used to perform sub-scan feed of a read document and sub-scan feed of recording paper, respectively. In addition, JP-A-57-3966
As shown in Japanese Patent Publication No. 8, there is one in which the reading original and the recording paper are sub-scanned by one motor. In this case, the original and the recording paper are driven by driving the clutch by the power of a solenoid or the like. The power transmission was switched to and the dedicated power source was needed to switch the clutch.

Next, this conventional example will be described. In FIG. 10, reference numeral 41 is a read original and 42 is a recording paper. Read manuscript 41
Is fed to the rollers 43 and 44, and the recording paper 42 is fed to the rollers 45 and 46, respectively. 47 is a motor, and the power of the motor 47 is transmitted to the pulley 49 and the pulley 50 via the belt 48. The pulley 49 is provided on the shaft of the roller 43, and when the pulley 49 rotates, the roller 43 also rotates at the same time. Further, the pulley 50 and the roller 45 are connected via a clutch 51, and when the clutch 51 is driven by means such as a solenoid (not shown), rotation of the pulley 50 is prevented by the roller.
When the clutch 51 is not driven, the power of the pulley 50 is not transmitted to the roller 45. With such a configuration, when the motor 47 is driven without the clutch 51 being driven, only the read original 41 is driven in the sub-scanning direction, and when the motor 47 is driven when the clutch 51 is driven, the recording paper 42 is simultaneously driven. Sub-scanning is driven. However, at this time, the roller 43 is also driven, but generally speaking, at the time of receiving and recording, the reading original is not inserted, and therefore, there is no problem even if the roller 43 is driven. As described above, the read document and the recording paper are driven by one motor.

(Problems to be Solved by the Invention) In such a conventional device, two motors are used to drive the reading original and the recording paper in the sub-scanning direction, or one motor is used to switch between them by a clutch. However, a separate drive source for driving the clutch is required, which makes the device expensive.

Therefore, in the present invention, the recording paper and the read document are driven by a single motor with a simple structure.

(Means for Solving the Problems) A clutch for selectively switching and transmitting the power of one motor to either the recording paper or the read document is provided, and this clutch is interlocked with the position of the carriage which is serially scanned. It is configured so as to be switched, and one original is driven by one motor.

(Operation) According to the present invention having the above-described structure, the clutch is operated by the movement of the carriage to switch the power transmission state of the motor, and the power of the motor is selectively transmitted to the recording paper or the read document to obtain the recording paper. And the reading document is driven in the sub-scanning direction.

Therefore, the recording paper and the read original can be driven by the power of one motor.

(Example) Hereinafter, the Example of this invention is described based on drawing.

In FIG. 1, reference numeral 1 denotes an original table, and the central portion of the original table 1 is made of a transparent material such as glass or acrylic resin, and the original is placed on the transparent portion with the original face down. The document table 1 is guided by a guide (not shown) so as to be movable in the direction A shown in the drawing, and is sandwiched by the rollers 11 and 12 and driven in the sub-scanning direction. A carriage 2 is reciprocally guided in the direction B shown by the guide shafts 3 and 4, and is driven by a motor not shown. As shown in FIG. 6, an LED 5, a lens 6, and a reading sensor 7 for illumination are mounted on the carriage 2. As a result, the document placed on the document table 1 is illuminated by the LED 5 and the light reflected on the document surface is guided to the reading sensor 7 by the lens 6, and the black and white of the document is determined by the intensity of the reflected light.
Further, a thermal head 8 for recording is held on the carriage 2 by a head support plate 41a and is rotatably supported. The thermal head 8 is urged in the direction of the recording paper 9 by means not shown, and recording is performed with the recording paper 9 being pressed against the platen 10. The recording paper 9 is wound in a roll shape and arranged at the rear of the apparatus. The recording paper 9 is guided to the recording position by being guided by the paper guides 13 and 14, and is further sandwiched by the rollers 15 and 16 to rotate the roller 15 so that the C shown in FIG. Sub-scan feed is performed in the direction. The reading of the document and the recording on the recording paper are performed by main scanning with a predetermined width by moving the carriage 2 in the direction B shown in the drawing. Reference numeral 17 denotes a motor for driving the recording paper 9 and the document table 1. The drive unit will be described in detail with reference to FIGS. 3 and 5. FIG. 3 is a side view of the drive unit, and FIG. 5 is a sectional view of the planetary gear mechanism. The sun gear 18 is fixed to the drive shaft of the motor 17, and the sun gear 18 rotates together with the drive shaft of the motor 17. The gear portion 18a of the sun gear 18 meshes with the planetary gear 19, and the planetary gear 19 is supported by the boss portion 18b of the sun gear 18 and rotatably supported by a shaft 21 standing on a rotatable gear 20. ing. The planetary gear 19 meshes with the gear portion 22a of the internal gear 22. The internal gear 22 is rotatably supported by the boss portion 18c of the sun gear 18. A pressing member 40 is fitted to the step portion 18d of the sun gear 18, and restricts the movement of the gear 20 and the internal gear 22 in the axial direction together with another step portion 18e. The gear 20 meshes with the gear portion 23a of the gear 23, and the gear portion 23b of the gear 23 meshes with the gear 24 attached to the roller 11. With such a configuration, the rotation of the gear 20 is transmitted to the roller 11, and the document table 1 is driven thereby. The internal gear 22 is provided with a gear portion 22b, and this gear portion 22b meshes with a gear 25 attached to the roller 15. As a result, the rotation of the internal gear 22 is transmitted to the roller 15 to drive the recording paper 9. The gear 20 and the internal gear 22 are provided with brake drum portions 20b and 22c, respectively, and brake bands 26 and 27 are wound around the brake drum portions 20b and 22c, respectively. The ends of the brake bands 26, 27 are attached to a switching arm 28 rotatably supported by a shaft 29. A spring 30 is hooked on the switching arm 28,
Is applied to the rotation direction in the D direction shown in FIG. In this state, the brake band 26 is pulled by the urging force of the spring 30, and the gear 20 is braked by this tension. On the other hand, the brake band 27 is loose, which allows the internal gear 22 to rotate freely. When the motor 17 rotates in this state, the rotation of the gear 20 is blocked, so that the planetary gear 19 cannot revolve around the sun gear 18, and the internal gear 22 is driven. The rotation of the internal gear 22 drives the roller 15 and thus the recording paper 9. Also, as shown in FIG. 2, the engaging portion 28 of the switching arm 28 is
The a is engaged with an engaging portion 32a of a transmission arm 32 rotatably supported by a shaft 31. The transmission arm 32 has another engagement portion 3
2b is provided and engages with a shaft 34 that stands on a lever 33. The lever 33 is guided by means (not shown) so as to be reciprocally movable in the direction B shown. Also, lever 33
An engaging portion 33a is provided on the opposite side of the engaging portion 3a.
3a can be engaged with a leaf spring 35 attached to the lower portion of the carriage 2. When the carriage 2 moves in the B direction shown in the drawing, the leaf spring 35 engages with the engaging portion 33a of the lever 33 to move the lever 33 in the B direction shown in the drawing. As a result, the transmission arm 32 rotates in the E direction shown in the drawing, and the switching arm 28 rotates in the direction opposite to the D direction shown in the drawing against the biasing force of the spring 30. This state is shown in FIG. At this time the brake band
When 27 is pulled, this tension prevents rotation of the internal gear 22. On the other hand, since the brake band 26 is loosened, the gear 20 can rotate. At this time, when the motor 17 is driven, the brake band 27 brakes the internal gear 22 to prevent its rotation, so that the planetary gear 19 revolves around the sun gear 18 and the gear 20 rotates. To be The rotation of the gear 20 is transmitted to the roller 11 and is transmitted to the document table 1
Drive. As described above, when the carriage 2 moves to the right in FIGS. 1 and 2 and the leaf spring 35 pushes the lever 33, the power of the motor 17 is transmitted to the document table 1,
When the carriage 2 is at another position, the power of the motor 17 is transmitted to the recording paper 9. Therefore, the power of the motor 17 can be selectively transmitted to the recording paper 9 or the document table 1 depending on the position of the carriage 2. Also, the leaf spring 35 causes the lever
Since 33 is pushed, the motor driving the carriage 2 will not be locked even if the lever 33 is hit and moved a little too much.

Next, the operation of the transmitter / receiver configured as above will be described.

First, the transmission operation will be described. At the time of transmission, the platen 1 is moved in the direction opposite to the direction A shown in FIG. 1 and pulled out to the position shown in FIG.
Most of them appear outside the device. At this time, the carriage 2
Is at a position where the leaf spring 35 engages with the engaging portion 33a of the lever 33. Therefore, lever 33, transmission arm 32, switching arm
28 is moved, and the drive unit is in the state shown in FIG. That is, the rotation of the internal gear 22 is stopped by the brake band 27, and as described above, the motor 17 rotates in the F direction shown in FIG. 3 to move the document table 1 in the direction opposite to the A direction in the drawing. It is something to move. When the document table 1 is pulled out, the operator places the document face down on the transparent portion in the center of the document table 1. Here, when the send button is pressed, the motor 17 starts rotating in the G direction shown in the figure. At this time,
The document table 1 is moved in the direction A in the figure. At this time, the recording paper 9 is not driven because the rotation of the internal gear 22 is blocked. When the document on the document table 1 moves to a predetermined reading position, the rotation of the motor 17 is temporarily stopped. After that, the reading operation is performed. The carriage 2 moves in the direction opposite to the direction B shown in FIG. 1 and reaches the right end position of the document.
Next, the carriage 2 starts moving in the B direction shown in the figure.
At this time, the document surface is illuminated by the LED 5 and the reflected light from the document surface is read by the lens 6 by the sensor 7
Lead to. The reading sensor 7 generates a signal according to the black and white of the original depending on the intensity of the reflected light. This signal is generated at a predetermined timing according to the movement of the carriage 2 by means such as an encoder attached to a carriage driving motor (not shown). This carriage 2
The main scanning is performed with the width of the reading sensor 7 by the movement of
The signal generated by the reading sensor 7 is transmitted after being processed. When the carriage 2 reaches the right edge of the document, one main scan is completed. At this time, the leaf spring 35 attached to the lower part of the carriage 2 engages with the engaging portion 33a of the lever 33 to move the lever 33 in the direction B shown in FIG. 2, and further to move the transmission arm 32 and the switching arm 28. It is rotated to bring the drive unit to the state shown in FIG. Therefore, the motor 17 is the fourth
The document is rotated by a predetermined amount in the G direction shown in the drawing, whereby the document is driven along with the document table 1 in the A direction by a predetermined amount in the sub-scanning direction, and the position of the document to be read next is moved to a position facing the reading sensor 7. The operation of the drive section at this time will be described with reference to FIG. 4. The switching arm 28 is in the state as shown in the figure, and therefore the brake band 27 is pulled and the internal gear 28
Prevent the rotation of. On the other hand, the brake band 26 is loose and the gear 20 is free to rotate. Therefore, the motor 17
Is transmitted to the gear 20. As a result, the roller 11 is driven and the document table 1 is sub-scanning driven. Then, the carriage 2 moves to the left end of the original again. After that, the main scanning and the sub-scanning of the document are repeated in the same manner to perform reading, and the document table moves by a predetermined amount, but transmission is performed until the end of the document is detected by a sensor (not shown). When the reading of the original document is completed, the motor 17 turns on the
The document table 1 starts to rotate in this direction, so that the document table 1 is moved in the direction opposite to that when the reading operation was performed. At this time, most of the document table 1 is discharged to the outside of the apparatus as at the start of transmission, and the operator can remove the document on the document table 1. After that, when the document table storage button is pressed, the motor 17 rotates and the document table 1 moves to a predetermined position inside the apparatus and is stored therein. The storage position of the document table 1 is determined by detecting the position of the document table 1 by a sensor (not shown).

Next, the recording operation upon reception will be described.

First, the carriage 2 is moved in the direction opposite to the direction B shown in FIGS. 1 and 2, and the recording portion of the thermal head 8 is moved to the recording paper 9
Come to the position opposite the left edge of. Here, the thermal head 8 presses the recording paper 9 against the platen 10 as shown in FIG. 2 by means not shown. With the thermal head 8 pressed against the recording paper 9, the carriage 2 starts to move in the direction B shown in FIG. 1 by a motor (not shown). At this time,
The recording portion of the thermal head 8 is heated according to the data based on the received signal to perform recording. The timing of this recording is set by an encoder or the like as in the transmission. As a result, main scanning for printing is performed. Carriage 2
Is reached to the right edge of the document, one main scan is completed, and the thermal head 8 is held at a position apart from the recording paper by means not shown. When the carriage 2 moves to the right end of the original, the leaf spring 35 engages with the engaging portion 33a of the lever 33, and the driving portion is brought into the state as shown in FIG. In such a state, the motor 17 is not driven at this time, so the document table 1 is not driven. After that, the carriage 2 is moved to the left end of the recording paper 9 again. At this time, the leaf spring 35 attached to the lower portion of the carriage 2 is in a position where it does not engage with the engaging portion 33a of the lever 33, and the drive portion is in the state shown in FIG. here,
The motor 17 rotates in the F direction shown in FIG. 3 by a predetermined amount, whereby the recording paper 9 is sub-scanning driven in the C direction shown in FIG.
The recording paper to be recorded next is moved to a position facing the thermal head 8. The operation of the drive unit at this time will be described with reference to FIG. 3. The switching arm 28 is in the state as shown in the figure, and the brake band 26 is stretched to prevent the gear 20 from rotating. On the other hand, the brake band 27 is loose and the internal gear 22 can rotate freely. Therefore, the rotation of the planetary gear 19 around the sun gear 18 is stopped, and the rotation of the motor 17 is transmitted to the internal gear 22. As a result, the roller 15 is driven and the recording paper 9 is sub-scanning driven. After that, the main scanning and the sub scanning of the recording paper are repeated in the same manner to perform recording until there is no received data. The reception operation is performed as described above.

Next, a copy operation in which the information read from the read document is recorded in the same device without being transmitted will be described.

First, the document table 1 is pulled out of the apparatus in the same manner as when transmitting. When a copy button is placed on the platen and the copy button is pressed, the motor 17 rotates in the direction G shown in the drawing to move the platen 1 to a predetermined reading position and stop it. At this time, in the carriage 2, the leaf spring 35 has the engaging portion 33 of the lever 33.
It is in a position to engage a, so the drive is
It is in the state shown in the figure. At this time, the rotation of the motor 17 is transmitted to the document table 1 as described above. The carriage 2 moves in the direction opposite to the direction B shown in FIGS. 1 and 2 and reaches the position of the left end of the document. Here, the thermal head 8 is pressed against the recording paper 9 by means not shown. Next, the carriage 2 starts moving in the B direction shown in the figure. At this time, the document surface is illuminated by the LED 5 and the light reflected from the document surface is guided to the reading sensor 7 by the lens 6. The reading sensor 7 generates a signal according to the black and white of the original depending on the intensity of the reflected light. This signal is generated at a timing corresponding to the movement of the carriage 2 by means such as an encoder attached to a carriage driving motor (not shown). Main movement is performed within the width of the reading sensor 7 by the movement of the carriage 2, and the signal generated by the reading sensor 7 is directly input to the thermal head 8 to cause a predetermined heating element of the thermal head 8 to generate heat and to be recorded on the recording paper 9. To perform. In this way, the data of the original can be read and recorded at the same time, and the information of the original can be recorded on the recording paper. When one carriage of main scanning is completed and the carriage 2 reaches the right end of the original and the recording paper, the carriage 2 is stopped. At this time, the thermal head 8 is separated from the recording paper 9 by means not shown. At this time, the leaf spring 35 attached to the lower portion of the carriage 2 engages with the engaging portion 33a of the lever 33 to move the lever 33 in the B direction shown in FIGS. The state shown in FIG. 4 is obtained. At this time, when the motor 17 rotates in the G direction shown in the figure, the document table 1 is fed as described above. When the document table 1 is fed by a predetermined amount,
Next, the carriage 2 moves in the direction opposite to the illustrated direction, and again moves to the left end position of the original and the recording paper. At this time, the drive portion is brought into a state as shown in FIG. 3 by the action of the spring 30. Here, the motor 17 rotates in the F direction shown in the figure to move the recording paper 9 by a predetermined amount. After that, the main scanning and the sub-scanning of the original and the recording paper are similarly repeated to copy the original. When the copy of the document is completed, the document table 1 can be moved in the direction opposite to the direction A shown in the drawing, and the document on the document table can be removed, as in the case of transmission. The copy operation is performed as described above.

In this embodiment, the original reading operation and the recording operation on the recording paper are performed at the same time when the carriage moves forward during the copying operation. However, the reading operation and the recording operation are performed when the carriage moves forward and backward, respectively. It may be performed separately.

As described above, by changing the position of the carriage and driving the motor, the sub-scanning drive of the recording paper and the sub-scanning drive of the original can be switched and performed.

Next, another embodiment of the present invention will be described.

FIG. 7 is a perspective view of the main part of the device, and FIGS. 8 and 9 are side views of the drive part. The difference from the above embodiment is that
The spring 36 for urging the switching arm 28 serves as a bistable spring and urges in directions opposite to each other with the neutral point as a boundary. The engaging member 37 is attached to the lower portion of the carriage 2 instead of the leaf spring. That is, the lever 33 is provided with the engaging portion 33b that engages with the engaging member 37 when the carriage 2 moves to the left end, and other portions are the same as those in the above-described embodiment. . This operation will be described. In FIGS. 7 and 8, the power of the motor 17 is in a state of being transmitted to the recording paper 9, and when the motor 17 rotates in this state, the recording paper 9 is driven. That is, the switching arm 28 receives the rotational biasing force in the D direction shown in the drawing by the action of the spring 36, and the brake band 26 is pulled by this, and the switching arm 28 is pulled.
Prevents 20 rotations. Therefore, when the motor 17 rotates, the revolution of the planetary gear 19 is stopped,
22 rotates. This allows the rotation of the motor 17 to rotate the recording paper 9
Transmitted to. Next, when the carriage 2 moves to the right end, the engaging member 37 engages with the engaging portion 33a of the lever 33, and when the carriage 2 further moves, the lever 33, the transmission arm 32, and the switching arm 28 are respectively moved, and the switching arm 28 Is D shown
It is rotated in the direction opposite to the direction. When the switching arm 28 is rotated to a position beyond the neutral point of the spring 36, the spring 36 exerts a force in a direction to urge the switching arm 28 in the opposite direction. The action of the spring 36 puts the drive unit in the state shown in FIG. In this state, the spring 36 pulls the brake band 27 to prevent the internal gear 22 from rotating. On the other hand, since the brake band 26 is loose and the gear 20 is free to rotate, when the motor 17 rotates, the planetary gear 19 is revolved, the gear 20 is rotated, and the document table 1 is driven. . Further, next, in order to switch the drive unit, the carriage 2 is moved to the left end and the engaging portion 33b of the lever 33 is pushed by the engaging member 37, whereby the lever 33 is moved in the direction opposite to the direction B in FIG. This is performed by moving and rotating the transmission arm 32 and the switching arm 28. At this time, the switching arm 28 is rotated in the direction D shown in FIG.
When the neutral point of 36 is exceeded, the switching arm 28 receives the turning force in the D direction shown in the figure, and enters the state shown in FIG. The operation of the drive unit at this time is as described above. The drive unit is switched as described above, and in this embodiment, the drive unit is operated by the spring 36 until the lever 33 is moved by the engaging member 37 attached to the carriage 2 and the switching arm 28 is switched. Is maintained. Note that the carriage 2 moves only to a position where the engaging member 37 does not engage with the engaging portions 33a and 33b of the lever 33 in a normal transmitting operation and a receiving operation, and moves to a position that engages only when switching is performed. Is set to.

In order to perform the transmission operation with the above-described configuration, first, the carriage 2 is moved to the right end, and the lever 33, the transmission arm 32, and the switching arm 28 are moved by the engagement member 37 to move the drive unit to the position shown in FIG. To the state like. At this time,
The power of the motor 17 is in a state of being transmitted to the document table 1. After that, by repeating the main scanning of the carriage 2 and the driving of the motor 17, the document is read and the transmission operation is performed. In this case, if the drive unit is first switched, the transmission state is maintained, so that it is not necessary to switch the drive unit during the transmission operation.

Further, in order to perform the receiving operation, first, the carriage 2 is moved to the left end, and the lever 33, the transmission arm 32, and the switching arm 28 are moved by the engaging member 37 so that the drive unit is brought into the state shown in FIG. To do. At this time, the power of the motor 17 is transmitted to the recording paper 9. After that, the main scanning of the carriage 2 and the driving of the motor 17 are repeated, thereby recording on the recording paper 9 and receiving operation. Also in this case, it is not necessary to switch the drive during operation.

Although the operation is performed as described above, in the case of this embodiment, the drive of the recording paper and the original can be switched by switching the drive unit by moving the carriage.

In the above embodiment, the original is placed on the original table and moved together with the original table in order to drive the original in the sub-scanning manner. It may be configured to perform.

As described above, according to the present invention, the original and the recording paper are driven by the power of one motor, and the transmission of the power to the original and the recording paper is interlocked with the position of the carriage to freely select them. The power transmission can be switched without a special drive source, and an inexpensive device can be supplied. Further, since the planetary gear mechanism is used for the power transmission switching portion, the device can be configured with a simple configuration.

[Brief description of drawings]

FIG. 1 is a perspective view of a transmitter / receiver according to an embodiment of the present invention, and FIG.
FIG. 6 is a perspective view of the main part of the device, FIGS. 3 and 4 are side views of the drive part of the device, FIG. 5 is a sectional view of the planetary gear mechanism part, FIG. 6 is a side view of the main part, and FIG. FIG. 8 is a perspective view of a main part of a transmitting / receiving device according to another embodiment of the present invention, FIGS. 8 and 9 are side views of a driving part of the device, and FIG. 10 is a perspective view showing a conventional transmitting / receiving device. 1 ... original table, 2 ... carriage, 7 ... reading sensor, 8 ... thermal head, 17 ... motor, 18 ... sun gear, 19 ... planet gear, 22 ... internal gear, 26, 27 …… Brake band, 28 …… Switching arm, 32 …… Transmission arm, 33 …… Lever.

Claims (3)

[Claims] 1. A carriage for mounting at least one of a recording head for recording on a recording paper and a reading sensor for reading an original, and a carriage for moving the original and the recording paper in a main scanning direction; A motor for scanning drive,
A clutch mechanism for switching the power of the motor so as to selectively transmit the power of the motor to either the original or the recording paper in conjunction with the position of the carriage in the main scanning direction is provided. A transmission / reception device characterized in that sub-scanning drive of an original and recording paper is switched by driving a motor differently. 2. A clutch mechanism is configured to operate in accordance with the position of a carriage, and by changing the position of the carriage to drive a motor, the sub-scanning drive of the original and the recording paper can be switched. The transmitter / receiver according to claim (1). 3. The transmission / reception device according to claim 1, wherein the clutch mechanism includes a holding mechanism that holds the switched power transmission state each time the power transmission is switched.