JP2001187655A - Image read and record device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image read and record device rotating a document carrier roller and a record paper carrier roller by a single drive motor by a simple constitution according to an operation mode. SOLUTION: A facsimile device 1 is so formed that a motor pinion 11 is clockwise rotated by the single drive motor in changing a mode, a read-side first idler gear 13 and a write-side first idler gear 18 are rotated via a reduction gear 12, the read-side swing plate 15 is clockwise swung so that a read-side swing gear 14 is engaged with a mode switch gear 23, and a write-side swing plate 20 is clockwise swung so that the write side first idler gear 19 is separated from a write-side second idler gear 21. The mode switch gear 23 is clockwise rotated by the read-side swing gear 14 and a cam 26 is clockwise rotated so as to turn on/off a mode detection sensor 24. A control part judges the present operation mode based on the on/off detection results of the mode detection sensor 24 and the number of rotation steps of the drive motor so as to control the operation mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading and recording apparatus, and more particularly, to an operation mode in which a roller for conveying a document and a roller for conveying a recording sheet by a single drive motor have a simple configuration. The present invention relates to an image reading / recording apparatus that is driven to rotate in accordance with (1).

[0002]

2. Description of the Related Art Conventionally, in a facsimile apparatus, a drive system of a facsimile machine is provided with a drive system for transporting a document and a drive system for transporting a recording sheet for transporting recording paper as separate drive systems. Has a motor as a drive source.

However, such a conventional facsimile apparatus has two driving motors, so that not only the cost is increased, but also the weight is heavy and the apparatus itself becomes large.

Therefore, conventionally, in a driving apparatus for transmitting a sheet by transmitting power from a driving source to one or both of the one and other transport mechanisms in accordance with a plurality of modes. A motor gear, to which power of a bidirectional rotatable motor, which is the driving source, is transmitted, and substantially V-shaped first and second planetary levers are rotatably fixed, respectively, and mesh with the motor gear, respectively. First and second sun gears, a first planetary gear rotatably fixed to one end of the first planetary lever, meshing with the first sun gear, and a rotatable one end of the second planetary lever. And a second planetary gear fixed to the second sun gear and meshing with the second sun gear, and a cam gear to which a cam contacting the other end of the first or second planetary lever is fixed. so The other end of the second planetary lever abuts on a cam fixed to the cam gear to restrict the rotation of the first planetary lever, and the first planetary gear meshes with the reduction gear that constitutes the one-way transport mechanism. In the second mode, the other end of the first planetary lever abuts on a cam fixed to the cam gear to restrict the rotation of the first planetary lever, and the reduction gear that constitutes the other transport mechanism of the second planetary lever is connected. In the third mode, the other ends of the first and second planetary levers do not come into contact with the cam fixed to the cam gear, and the first and second planetary gears and the reduction gears of the one and other transport mechanisms are not engaged. A driving device has been proposed in which the two gears mesh with each other (see JP-A-9-150985).

[0005]

However, in such a conventional drive device, the number of parts is very large,
A complicated gear train is required to control the operation mode, and the apparatus is expensive. Further, improvement is required to improve stable driving.

In view of the above, a first aspect of the present invention provides a reading idler gear and a reading side oscillating gear attached to a reading side oscillating plate that oscillates the rotation of a driving gear that is rotationally driven by one driving motor. To the reading-side roller gear mechanism, and to the writing-side roller gear mechanism via the writing-side idler gear attached to the oscillating writing-side swinging plate and the writing-side swinging gear. The cam attached to the switching gear interferes with the leading end of the reading-side rocking plate and the leading end of the writing-side rocking plate, thereby restricting the swinging of the reading-side rocking plate and the writing-side rocking plate for reading. When setting three operation modes, a mode, a recording mode, and a copy mode, the rotation position of the mode switching gear is detected by the mode detection means which is turned on / off by the cam, and the operation mode is switched, thereby achieving the parts. Small score, small High stability of operation lightweight, and its object is to provide an inexpensive image reading and recording apparatus.

According to a second aspect of the present invention, by setting the operation mode of the image reading and recording apparatus in the standby state to the reading mode, the reading-side roller gear mechanism is quickly driven when the document is set on the image reading section. The object of the present invention is to provide an image reading / recording apparatus capable of pre-feeding a document, confirming that the document is set, and promptly switching to a reading mode or a copy mode, thereby improving usability. And

According to a third aspect of the present invention, the operation mode at the time of completion of assembly of the image reading and recording apparatus is set to the copy mode, so that the mode switching gear is driven by vibration applied to the image reading and recording apparatus at the time of transportation after assembly. Even if the position changes slightly,
The tip of the read-side rocker or write-side rocker interferes with the cam,
Provided is an image reading / recording apparatus capable of preventing the occurrence of an operation failure due to, for example, making it impossible to rotate a mode switching gear, improving workability at the time of assembling, reducing assembling errors, and improving quality. It is intended to be.

[0009]

According to a first aspect of the present invention, there is provided an image reading / recording apparatus which transports a document and reads an image of the document, and which transports a recording sheet and prints the image on the recording sheet. An image recording unit for recording, and a reading mode in which only the document is conveyed and only the image is read in the image reading unit, and the image recording in the image recording unit is performed by only conveying the recording paper. There are three operation mode processes: a recording mode in which only recording is performed, and a copy mode in which the document is transported and the recording paper is transported to read an image in the image reading unit and record an image in the image recording unit. A drive gear rotatably driven by said one drive motor, a read-side idler gear rotatably driven by said drive gear, and a writing-side eye rotatably driven by said drive gear. A gear, a reading-side swinging gear rotatably driven by the reading-side idler gear, and the reading-side idler gear and the reading-side swinging gear are rotatably mounted and a predetermined rotation centered on the center of the reading-side idler gear. A reading-side swinging plate that swings at an angle, a reading-side roller gear mechanism that meshes with the reading-side swinging gear according to the swinging position of the reading-side swinging plate, and rotates a reading-side roller; A writing-side oscillating gear rotatably driven by a side-side idler gear, the writing-side idler gear and the writing-side oscillating gear being rotatably mounted, and a predetermined angle about the center of the writing-side idler gear as a rotation center. A writing-side swing plate that swings, a writing-side roller gear mechanism that meshes with the writing-side swing gear according to the swing position of the writing-side swing plate, and rotates the writing-side roller; ,Previous A mode switching gear meshed with and driven to rotate with the reading-side rocking gear or the writing-side rocking gear according to the rocking state of the reading-side rocking plate or the writing-side rocking plate; Attached to the switching gear, the leading end of the reading-side rocking plate and the leading end of the writing-side rocking plate come into contact with each other and change the position by rotation of the mode switching gear. The movement of the leading end of the writing-side rocking plate is restricted to mesh with the reading-side rocking gear and the reading-side roller gear mechanism, and with the writing-side rocking gear and the writing-side roller gear mechanism. And a mode detecting means which is turned on / off by the cam attached to the mode switching gear to detect a rotational position of the mode switching gear, the mode switching means comprising: Based on the detection result of the detection means The above object is achieved by controlling the rotation of the drive motor and switching the operation mode.

According to the above construction, the rotation of the driving gear driven by one driving motor is read via the reading side idler gear and the reading side oscillating gear attached to the oscillating reading side oscillating plate. Transmitted to the side roller gear mechanism,
The write-side idler gear and the write-side oscillating gear attached to the oscillating write-side oscillating plate are transmitted to the writer-side roller gear mechanism via the oscillating write-side oscillating plate. Interfering with the tip of the plate and the tip of the writing-side rocking plate, restricting the swinging of the reading-side rocking plate and the writing-side rocking plate, the reading mode,
When setting the three operation modes of the recording mode and the copy mode, the rotation of the mode switching gear is detected by the mode detecting means which is turned on / off by the cam, and the operation mode is switched. Can be made inexpensive with a small number of parts, small size and light weight, high operation stability.

In this case, for example, the image reading / recording apparatus may set the operation mode in a standby state of the image reading / recording apparatus to the reading mode.

According to the above configuration, the operation mode in the standby state of the image reading and recording apparatus is set to the reading mode. Therefore, when the document is set on the image reading section, the reading roller gear mechanism is quickly driven to move the document. By pre-feeding, it is possible to confirm that the document is set, and it is possible to promptly shift to the reading mode or the copy mode, thereby improving usability.

Further, for example, as set forth in claim 3, the image reading / recording apparatus may set the operation mode at the time of completion of assembly of the image reading / recording apparatus to the copy mode.

According to the above configuration, the operation mode at the time of completion of the assembly of the image reading and recording apparatus is set to the copy mode, so that the position of the mode switching gear is slightly changed due to vibration applied to the image reading and recording apparatus during the transportation after the assembly. However, it is possible to prevent an operation failure due to the tip of the reading-side rocking plate or the writing-side rocking plate interfering with the cam and making the rotation of the mode switching gear impossible or the like. The workability at the time of assembling the recording apparatus and the reduction of assembly errors can be improved, and the quality of the image reading and recording apparatus can be improved.

[0015]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that the embodiments described below are preferred embodiments of the present invention, and therefore, various technically preferable limitations are added. However, the scope of the present invention is not limited to the following description. The embodiments are not limited to these embodiments unless otherwise specified.

FIGS. 1 to 6 show an embodiment of the image reading and recording apparatus of the present invention. FIG. 1 shows a facsimile apparatus 1 to which the embodiment of the image reading and recording apparatus of the present invention is applied. FIG. 2 is a front view of a main part of the drive mechanism unit 10 of FIG.

In FIG. 1, a facsimile apparatus 1 includes an image reading unit, an image recording unit, an operation unit, a control unit, and the like (not shown). Under the control of the control unit, facsimile communication is performed, and image reading is performed. The unit reads an image of a document and the image recording unit records an image on a recording sheet.

The image reading unit includes a document sensor (not shown) for detecting a document set on a document table (not shown). When a document is set on the document table, the driving mechanism 10
The document is conveyed one by one to the reading position, and the image of the document is read. The image of the document read by the image reading unit is
In the transmission mode, it is subjected to transmission processing, and in the copy mode, it is recorded and output on recording paper by the image recording unit.

The image recording section records and outputs the received image or the image read by the image reading section on recording paper conveyed by the drive mechanism section 10.

As shown in FIGS. 1 to 4, the drive mechanism 10 includes a motor pinion 11, a reduction gear 12, and a first reading side.
Idler gear 13, reading-side swing gear 14, reading-side swing plate 15, reading-side second idler gear 16, reading roller gear 1
7, writing-side first idler gear 18, writing-side swing gear 1
9, writing-side rocker plate 20, writing-side second idler gear 21,
A write roller gear 22, a mode switching gear 23, a mode detection sensor 24, a spring 25, a cam 26, a cam holding portion 27, and the like are provided.

The motor pinion (drive gear) 11 is connected to a drive shaft of one drive motor (not shown), and is driven to rotate by the drive motor.

The reduction gear 12 is meshed with the motor pinion 11 and is driven to rotate by the motor pinion 11.

The motor pinion 11 is meshed with a reading-side first idler gear (reading-side idler gear) 13 and a writing-side first idler gear (writing-side idler gear) 18.
The reading-side first idler gear 13 and the writing-side first idler gear 18 are driven to rotate by the motor pinion 11.

The reading-side first idler gear 13 is rotatably provided at one end of a substantially V-shaped reading-side rocking plate 15, and is provided at the center of the reading-side rocking plate 15. With the reading-side swing gear 14.

The reading-side swinging plate 15 is provided so as to be swingable about an end portion where the reading-side first idler gear 13 is provided as a swing center. The reading-side swing plate 15 swings around the center of the reading-side first idler gear 13 as the swing center. The reading-side rocking plate 15 has an end opposite to the side on which the reading-side first idler gear 13 is provided, and a rear side of the mode switching gear 23 (FIG. 1).
4 to the rear surface side of FIG. 4), the vicinity of the mode switching gear 23, that is, the vicinity of a cam 26 and a cam holding portion 27 described later.

The reading-side second idler gear 16 meshes with the reading-side swing gear 14 depending on the swing state of the reading-side swing plate 15, and is driven to rotate by the reading-side swing gear 14.

The reading roller gear 17 is connected to a document conveying reading roller (not shown) of the image reading section.
The reading side second idler gear 16 meshes with the reading side second idler gear 16 and is rotationally driven by the reading side second idler gear 16. The reading-side second idler gear 16 and the reading roller gear 17 function as a reading-side roller gear mechanism.

The write-side first idler gear 18 is provided substantially at the center of the write-side swing plate 20, meshes with the reduction gear 12, and is driven to rotate by the reduction gear 12.

The writing-side rocking gear 19 includes a writing-side rocking plate 20.
Is rotatably attached to one end of the first idler gear and meshes with the first idler gear 18 on the writing side.

The write-side swing plate 20 is provided so as to be able to swing about the central portion where the write-side first idler gear 18 is provided as a swing center. Accordingly, the writing-side swing gear 19 swings around the center of the writing-side first idler gear 18 as the swing center. The end of the writing-side rocking plate 20 opposite to the side to which the writing-side rocking gear 19 is attached is located on the back side of the mode switching gear 23 (the back side in FIGS. 1 to 4). 23, that is, in the vicinity of a cam 26 and a cam holding portion 27 described later.

The write-side second idler gear 21 meshes with the write-side swing gear 19 depending on the swing state of the write-side swing plate 20, and is driven to rotate by the write-side swing gear 19.

The writing roller gear 22 is connected to a writing roller (not shown) for transporting a recording sheet of the image recording section, and meshes with the writing-side second idler gear 21 to form the writing-side second idler gear 21. Is driven to rotate. The writing-side second idler gear 21 and the writing roller gear 22 function as a writing-side roller gear mechanism.

The mode switching gear 23 has a substantially triangular cam holding portion 27 attached to the front surface side in FIGS. 1 to 4, that is, the opposite surface side of the cam 26. A cam 26 is fixed to the portion.
A spring 25 whose one end is fixed to a fixing member 28 is in contact with the cam holding portion 27, and the spring 25 comes into close contact with a triangular side portion of the cam holding portion 27 and presses the same. The cam holding portion 27 prevents the position from easily changing.

The mode switching gear 23 has a reading-side rocking plate 1
When the shutter 5 swings clockwise, the reading-side swing gear 17 attached to the reading-side swing plate 15 meshes, and the mode switching gear 23 meshes with the reading-side swing gear 17. so,
The reading side swing gear 17 is driven to rotate.

Mode detection sensor (mode detection means) 24
For example, a micro switch or the like is used, and the detection terminal 24a is turned on / off by being pressed by the cam 26, and detects the rotational position of the mode switching gear 23, that is, the position of the cam 26. The mode detection sensor 24 outputs this detection result to a control unit (not shown), and the control unit outputs the position of the cam 26 based on the detection result of ON / OFF of the mode detection sensor 24 and the number of rotation steps of the drive motor. Is determined, and mode control described later is performed. In addition, the mode detection sensor 24 is not limited to a micro switch, and may use, for example, an optical sensor.

The control section controls each section of the facsimile apparatus 1 to perform facsimile communication, and controls the operation of the drive mechanism section 10 based on the detection result of the mode detection sensor 24, particularly, connects the motor pinion 11. The operation of the driving motor is controlled, and the conveyance of the document of the image reading unit and the conveyance of the recording paper of the image recording unit are performed by one driving motor.

Next, the operation of the present embodiment will be described. The facsimile apparatus 1 of the present embodiment has a driving mechanism 1
0 has only one drive motor and the mode detection sensor 2
Based on the detection result of No. 4, the conveyance of the document of the image reading unit and the conveyance of the recording paper of the image recording unit are performed by one drive motor.

That is, the facsimile apparatus 1 has a transmission mode in which a reading roller is rotated to convey a document during transmission (reading mode), and a reception mode in which a writing roller is rotated to convey recording paper during reception (recording mode). And a copy mode in which the reading roller and the writing roller are simultaneously rotated. The gear position of the mode switching gear 23, that is, the cam 26, is set in accordance with each operation mode.
Is controlled to control the rotation of the reading roller and the writing roller according to each operation mode.

First, the mode switching process will be described.
In order to perform mode switching, the control unit drives the motor pinion 11 to rotate clockwise as shown in FIG. 2 by the drive motor, and rotates the reduction gear 12 counterclockwise. When the reduction gear 12 rotates counterclockwise, the reading-side first idler gear 13 and the writing-side first idler gear 18 rotate clockwise, and mesh with the reading-side first idler gear 13 and the writing-side first idler gear 18. The reading-side rocking gear 14 and the writing-side rocking gear 19 rotate counterclockwise, and the reading-side rocking plate 15 rocks clockwise about the center of the reading-side first idler gear 13. Move,
The write-side swing plate 20 swings clockwise about the center of the write-side first idler gear 18 as the swing center.

When the writing-side rocking plate 20 rocks clockwise, the end of the writing-side rocking plate 20 on the cam 26 side becomes the cam 26.
As the reading-side swinging plate 15 swings clockwise, the reading-side swinging gear 14 meshes with the mode switching gear 23 as shown in FIG. At this time, the write-side swing gear 1
9 is in a free state by a stopper (not shown), and the tip of the writing-side rocking plate 20 on the cam 26 side is
It is in a state away from.

The mode switching gear 23 includes the reading-side swing gear 1
4, the reading side swing gear 14 is driven to rotate clockwise by the counterclockwise rotation of the reading side swing gear 14, and the mode switching gear 23
26 attached to a cam holding portion 27 fixed to
Rotates clockwise.

The rotation of the cam 26 is detected by the mode detection sensor 2
4, the mode detection sensor 24 outputs the detection result to the control unit. Specifically, the control unit determines the current position of the cam 26 based on the on / off detection result of the mode detection sensor 24 and the number of rotation steps of the drive motor, and determines the current operation mode. Control the operation mode.
That is, the control unit controls the rotation of the mode switching gear 23 to control the position of the cam 26 to a position corresponding to the operation mode.

In the facsimile apparatus 1, in the standby state, the gear position of the mode switching gear 23, that is, the position of the cam 26 is set as the gear position in the transmission mode.

That is, the user is near the facsimile machine 1 at the start of the operation of the facsimile machine 1 at the time of transmission and copying because of the necessity of setting an original on the image reading section. When a document is set, the document is pre-feeded to confirm that the document has been set, and then a transmission operation or a copy operation specified by a key operation of the operation unit is performed.

Therefore, when a document is set on the image reading unit and a document sensor (not shown) detects the set document, it is possible to immediately start pre-feeding of the document. The time required for the facsimile apparatus 1 is improved, and the usability of the facsimile apparatus 1 is improved.

However, if the standby mode is another operation mode or the mode switching gear 23 is rotating, the reading side rocking plate 15 is set after the original is set.
Swings, the reading-side swing gear 14 meshes with the mode switching gear 23, and the mode switching gear 23 rotates to perform pre-feeding of the document after changing to the transmission mode or the copy mode. Therefore, a waiting time occurs before the pre-feed of the document is performed, and the user waits until the pre-feed is completed before performing the key operation.

As a result, when the mode switching gear 23 is at the gear position in the transmission mode in the standby state, the waiting time can be reduced, and the usability of the facsimile apparatus 1 is improved.

Next, the operation of the drive mechanism 10 will be described for each operation mode. First, the transmission mode will be described.

In the facsimile apparatus 1, when a document is set on the image reading unit in a standby state and a document sensor (not shown) is turned on, the mode switching gear 23 is in the standby state.
Is set to the transmission mode position as described above, the control unit controls the drive motor to
As shown in (1), the motor pinion 11 is rotated counterclockwise.

When the motor pinion 11 rotates counterclockwise, the reduction gear 12, the reading-side first idler gear 13, and the writing-side first idler gear 18 rotate. When the reading-side first idler gear 13 and the writing-side first idler gear 18 rotate, the reading-side oscillating plate 15 and the writing-side oscillating plate 20 are moved by the oscillating gears 14 and 19, respectively.
6 and the writing side second idler gear 21.

However, in the transmission mode, as shown in FIG. 1, the cam 26 provided on the back side of the mode switching gear 23 in FIG. The cam 26 interferes with the tip of the writing-side rocking plate 20 that has rocked counterclockwise, thereby preventing the writing-side rocking plate 20 from rocking counterclockwise. Therefore, the write-side swing gear 19 and the write-side second idler gear 21 do not mesh with each other, only the read-side swing gear 14 meshes with the read-side second idler gear 16, and the rotation of the motor pinion 11 is reduced by the reduction gear. 12, reading-side first idler gear 13, reading-side swing gear 1
4 and the reading side second idler gear 16 are sequentially transmitted to drive the reading roller gear 17 to rotate.

Accordingly, the reading roller is driven to rotate by the reading roller gear 17, so that the original in the image reading section can be properly conveyed.

At this time, as described above, since the writing-side swing gear 19 does not mesh with the writing-side second idler gear 21,
The writing roller gear 22 does not rotate, and the recording paper is not conveyed in the image writing unit.

Therefore, the rotation of one drive motor is transmitted only to the reading roller gear 17, the reading roller is driven to rotate, the operation in the transmission mode is appropriately performed, the document is transported by the image reading section, and the document is conveyed. Images can be read.

At this time, since the pressure is applied to the cam holding portion 27 fixed to the mode switching gear 23 by the spring 25, the mode switching gear 23 during the mode is in operation.
Can be prevented from rotating.

Next, the reception mode will be described. When the facsimile apparatus 1 receives a facsimile in the standby state, the facsimile apparatus 1 outputs the motor switching gear 23 in the standby state as described above.
As shown in FIG. 1, since the cam 26 is located at the transmission mode position where the cam 26 is located at the upper right portion, as described with reference to FIG. 2, the control unit first moves the drive motor, that is, the motor pinion 11 clockwise. By rotating, the position of the motor switching gear 23, that is, the position of the cam 26 is moved to the reception mode position shown in FIG. 3, and the operation mode of the drive mechanism unit 10 is set to the reception mode.

Next, the control section reverses the rotation of the drive motor as shown by the arrow in FIG.
When the motor pinion 11 is rotated counterclockwise as in the transmission mode, the reduction gear 12, the reading-side first idler gear 13, and the writing-side first idler gear 18 are rotated. When the reading-side first idler gear 13 and the writing-side first idler gear 18 rotate,
The reading-side rocking plate 15 and the writing-side rocking plate 20 rock in directions in which the rocking gears 14 and 19 mesh with the reading-side second idler gear 16 and the writing-side second idler gear 21, respectively.

However, in the receiving mode, as shown in FIG. 3, the cam 26 provided on the back side of the mode switching gear 23 in FIG. The reading-side swing plate 15 is provided below the cam 26.
The cam 26 interferes with the tip of the reading-side rocking plate 15 that has rocked counterclockwise, thereby preventing the reading-side rocking plate 15 from rocking counterclockwise. Therefore, only the write-side swing gear 19 meshes with the write-side second idler gear 21, and the rotation of the motor pinion 11 is reduced by the reduction gear 12, the write-side first idler gear 18, the write-side swing gear 19, and the write-side swing gear 19. The write roller gear 22 is sequentially transmitted through the second idler gear 21 and drives the writing roller gear 22 to rotate.

Accordingly, the writing roller is driven to rotate by the writing roller gear 22, and the recording paper of the image recording section can be properly conveyed.

At this time, as described above, since the reading-side swing gear 14 does not mesh with the reading-side second idler gear 16,
The reading roller gear 17 does not rotate, and the document is not conveyed by the image reading unit.

Therefore, the rotation of one drive motor is transmitted only to the writing roller gear 22 to rotate the writing roller, perform the operation in the reception mode appropriately, and convey the recording paper by the image recording unit. The received image can be recorded and output on recording paper.

Next, the copy mode will be described. In the facsimile apparatus 1, when a document is set on the image reading unit in the standby state, the motor switching gear 23 is in the transmission mode position in the standby state as described above, and therefore, as described in FIG. By rotating the motor pinion 11 in the counterclockwise direction, the reading roller gear 17 is rotated and the document is pre-fed, and the setting of the document is confirmed, as described in the case of the transmission mode.

When the setting of the original is confirmed, the control unit
In response to a copy instruction operation on the operation unit, the mode shifts to the copy mode, and the drive motor, that is, the motor pinion 11 is rotated clockwise to change the position of the motor switching gear 23, that is, the position of the cam 26, as shown in FIG. As shown in FIG.
Is moved to the copy mode position located at the upper left, and the operation mode of the drive mechanism unit 10 is set to the copy mode.

Next, as shown by the arrow in FIG. 4, the control unit rotates the drive motor in the counterclockwise direction, rotates the motor pinion 11 in the counterclockwise direction, and
Is rotated counterclockwise, the reduction gear 12, the reading side first
The idler gear 13 and the write-side first idler gear 18 rotate. When the reading-side first idler gear 13 and the writing-side first idler gear 18 rotate, the reading-side oscillating plate 15 and the writing-side oscillating plate 20 have the oscillating gears 14 and 19 respectively written with the reading-side second idler gear 16. And swings in a direction meshing with the second idler gear 21 on the insertion side.

However, in the copy mode, FIG.
4, the cam 26 provided on the back side of the mode switching gear 23 in FIG. 4 is located at the upper left position where it does not interfere with either the tip of the reading-side rocking plate 15 or the writing-side rocking plate 20. Therefore, the swing of the reading-side rocking plate 15 and the writing-side rocking plate 20 is not hindered. Therefore, the reading-side swing gear 1
4 meshes with the second idler gear 17 on the reading side,
The write-side swing gear 19 meshes with the write-side second idler gear 21, and the rotation of the motor pinion 11 rotates the reduction gear 12, the read-side first idler gear 13, the read-side swing gear 14, and the read-side second idler gear 16. Are sequentially transmitted to drive the reading roller gear 17 to rotate, and the writing-side first
Idler gear 18, write-side swing gear 19, and write-side second
The writing roller gear 22 is sequentially transmitted through the idler gear 21 to rotate the writing roller gear 22.

Therefore, the reading roller is driven to rotate by the reading roller gear 17 so that the original of the image reading section can be properly conveyed. Further, the writing roller is driven to rotate by the writing roller gear 22, and the image recording section is driven. The recording paper can be properly conveyed.

Therefore, the rotation of one driving motor is transmitted to the reading roller gear 17, the reading roller is driven to rotate, the document is properly conveyed by the image reading section, the image of the document is read, and the driving motor is driven. Writing roller gear 2 for rotation
2, the writing roller is driven to rotate, the recording paper is appropriately conveyed by the image recording unit, and the received image can be recorded and output on the recording paper.

As described above, the facsimile apparatus 1 according to the present embodiment controls the rotation of the motor pinion 11 which is rotationally driven by one drive motor so that the reading-side rocking plate 15
Is transmitted to a reading-side second idler gear 16 and a reading-roller gear 17, which are a reading-side roller gear mechanism, via a reading-side first idler gear 13 and a reading-side oscillating gear 14 attached thereto. The write-side first idler gear 18 and the write-side swinging gear 19 attached to the plate 20 are transmitted to a write-side second idler gear 21 and a write-roller gear 22, which are write-side roller gear mechanisms. The cam 26 mounted on the reading side swing plate 15
And the leading end of the writing-side rocking plate 20 interferes with the leading edge of the writing-side rocking plate 20 to restrict the rocking of the reading-side rocking plate 15 and the writing-side rocking plate 20. ) And the copy mode, the rotational position of the mode switching gear 23 is detected by the mode detecting sensor 24 which is a mode detecting means which is turned on / off by the cam 26, and the operation mode is switched. Is going.

Therefore, the facsimile machine 1, especially
The drive mechanism unit 10 can be small in size, light in weight, stable in operation, and inexpensive.

Further, the facsimile apparatus 1 of the present embodiment
Sets the operation mode in the standby state to the transmission mode which is the reading mode.

Therefore, when the original is set in the image reading section, the reading-side second idler gear 16 and the reading roller gear 17 which are the reading-side roller gear mechanism are quickly driven to pre-feed the original, and the original is set. Can be confirmed, and the mode can be promptly shifted to the transmission mode or the copy mode. As a result, the usability of the facsimile machine 1 can be improved.

Further, the facsimile apparatus 1 of the present embodiment
Is a mode switching gear 23 at the time of assembling the facsimile machine 1.
, That is, the position of the cam 26 is limited to the copy mode.

That is, when assembling the facsimile machine 1,
In particular, when the drive mechanism 10 is assembled, the mode switching gear 23
If the gear position is a gear position in the transmission mode as shown in FIG. 5, it may be difficult to shift to a normal operation. In order to start the operation of the facsimile apparatus 1, it is necessary to rotate the mode switching gear 23 and detect the current mode with the mode detection sensor 24. When the facsimile apparatus 1 is assembled, as shown in FIG. When the gear position of the mode switching gear 23 is the gear position of the transmission mode and the tip of the writing-side rocking plate 20 is located below the cam 26, the motor pinion 11 rotates clockwise. When the reading-side swing gear 14 meshes with the motor switching gear 23 and the motor switching gear 23 rotates clockwise as indicated by the arrow, and the cam 26 attempts to rotate clockwise, as shown in FIG. The cam 26 and the tip of the writing-side rocking plate 20 interfere with each other.

Therefore, the cam 26, that is, the motor switching gear 23 cannot rotate, and the mode detection by the mode detection sensor 24 cannot be performed. As a result, the facsimile machine 1 may not be able to detect the current operation mode and may not be able to shift to a normal operation.

If the gear position of the mode switching gear 23 is set to the gear position in the reception mode as shown in FIG. 6 when the facsimile apparatus 1 is assembled, particularly when the drive mechanism section 10 is assembled, normal operation can be achieved. Migration may be difficult. The facsimile machine 1 needs to
By rotating the mode switching gear 23, the mode detection sensor 24
It is necessary to detect the current mode, but at the time of assembling the facsimile apparatus 1, as shown in FIG. 6, the gear position of the mode switching gear 23 is the gear position of the reception mode,
When the leading end of the reading-side rocking plate 15 is located on the left side of the cam 26, the motor pinion 11 rotates clockwise to engage the reading-side rocking gear 14 with the motor switching gear 23. When the swinging plate 15 swings clockwise (rightward), the leading end of the reading-side swinging plate 15 interferes with the cam 26 as shown in FIG. In this case, even when the assembling is performed while avoiding the interference with the cam 26 while paying attention to the tip position of the reading-side rocking plate 15 during the assembling, the reading-side rocking plate 15 moves with a little vibration or touches a little. The tip of the reading-side rocking plate 15 interferes with the cam 16 because it moves only by the movement.

Accordingly, since the motor switching gear 23 does not rotate and the cam 26 does not rotate, the mode detection sensor 24
Mode detection cannot be performed. As a result, the facsimile machine 1 may not be able to detect the current operation mode and may not be able to shift to a normal operation.

However, when assembling the facsimile machine 1,
In particular, when the drive mechanism 10 is assembled, the mode switching gear 23
As shown in FIG. 4, when the gear position in the copy mode is set to the gear position in the copy mode, even if both the leading end of the reading-side rocking plate 15 and the leading end of the writing-side rocking plate 20 slightly move, ,
The mode switching gear 23 can be appropriately rotated without interfering with the cam 26, and the gear position of the mode switching gear 23, that is, the position of the cam 26 can be detected by the mode detection sensor 24. As a result, the facsimile machine 1 can operate normally.

Then, as described above, the mode switching gear 23
When assembling with the gear position of
Since the mode switching gear 23 is pressed down by the spring 25, once positioned, the position of the mode switching gear 23 does not easily fluctuate, and the facsimile machine 1 can properly operate normally.

As a result, the workability of assembling the facsimile machine 1, especially the drive mechanism 10, can be improved, and assembling errors can be reduced, so that the quality of the facsimile machine 1 can be improved.

As described above, the invention made by the inventor has been specifically described based on the preferred embodiments. However, the present invention is not limited to the above, and various modifications can be made without departing from the gist of the invention. It goes without saying that it is possible.

For example, in the embodiment, the case where the present invention is applied to a facsimile apparatus has been described. However, the image reading / recording apparatus is not limited to the facsimile apparatus, and may be applied to, for example, a copying apparatus. .

[0082]

According to the image reading / recording apparatus of the present invention, the rotation of the driving gear driven by one driving motor rotates the reading side mounted on the oscillating reading side swing plate. The transmission to the reading roller gear mechanism via the idler gear and the reading side oscillating gear, and the writing side via the writing side idler gear and the writing side oscillating gear attached to the oscillating writing side oscillating plate. The cam transmitted to the roller gear mechanism and attached to the mode switching gear interferes with the leading end of the reading-side rocking plate and the tip of the writing-side rocking plate, and the cam of the reading-side rocking plate and the writing-side rocking plate When setting three operation modes of a reading mode, a recording mode, and a copy mode by restricting the swing, the rotation position of the mode switching gear is detected by the mode detecting means which is turned on / off by the cam, and the operation mode is set. Switching, so image reading The recording apparatus small number of parts, the stability of operation in small and light high, can be made inexpensive.

According to the image reading and recording apparatus of the present invention, since the operation mode of the image reading and recording apparatus in the standby state is the reading mode, when the original is set in the image reading section, the reading roller gear is set. The mechanism can be quickly driven to pre-feed the original to confirm that the original has been set, and the mode can be promptly shifted to the reading mode or the copy mode, thereby improving usability.

According to the image reading / recording apparatus of the third aspect, since the operation mode at the time of completion of the assembly of the image reading / recording apparatus is the copy mode, the vibration applied to the image reading / recording apparatus at the time of transportation after the assembly, etc. Even if the position of the mode switching gear fluctuates to some extent, the leading end of the reading-side rocking plate or the writing-side rocking plate interferes with the cam, and the operation of the mode switching gear cannot be rotated. Can be prevented,
It is possible to improve the workability at the time of assembling the image reading and recording apparatus, reduce the number of assembly errors, and improve the quality of the image reading and recording apparatus.

[Brief description of the drawings]

FIG. 1 is a front view of a main part in a transmission mode of a driving mechanism of a facsimile apparatus to which an embodiment of an image reading and recording apparatus according to the present invention is applied.

FIG. 2 is a front view of a main part of the drive mechanism of FIG. 1 at the time of mode switching.

FIG. 3 is a front view of a main part of the driving mechanism in FIG. 1 in a reception mode.

FIG. 4 is a front view of a main part of the drive mechanism shown in FIG. 1 in a copy mode.

FIG. 5 is an enlarged front view of a main part when the motor switching gear is in a transmission mode position when the facsimile apparatus of FIG. 1 is assembled.

FIG. 6 is an enlarged front view of a main part when the motor switching gear is in the reception mode position when the facsimile apparatus of FIG. 1 is assembled.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Facsimile apparatus 10 Drive mechanism part 11 Motor pinion 12 Reduction gear 13 Reading-side first idler gear 14 Reading-side swinging gear 15 Reading-side swinging plate 16 Reading-side second idler gear 17 Reading roller gear 18 Writing-side first idler gear 19 Writing Side swing gear 20 Writing side swing plate 21 Writing side second idler gear 22 Writing roller gear 23 Mode switching gear 24 Mode detection sensor 25 Spring 26 Cam 27 Cam holding unit 28 Fixing member

Claims (3)

[Claims] An image reading unit that conveys a document and reads an image of the document; and an image recording unit that conveys a recording sheet and records an image on the recording sheet, and performs only the conveyance of the document. A reading mode in which only the image reading unit reads an image, a recording mode in which only the recording paper is transported, and only an image is recorded in the image recording unit, and a transport of the original and a transport of the recording paper. And an image reading and recording apparatus that performs three operation mode processes of a copy mode in which an image is read by the image reading unit and an image is recorded by the image recording unit, and is rotated by the one drive motor. A driving gear that is driven, a reading idler gear that is rotationally driven by the driving gear, a writing idler gear that is rotationally driven by the driving gear, and a reading that is rotationally driven by the reading idler gear. A reading-side swinging plate, a reading-side swinging plate on which the reading-side idler gear and the reading-side swinging gear are rotatably mounted, and which swings at a predetermined angle around a center of the reading-side idler gear; A reading-side roller gear mechanism that meshes with the reading-side rocking gear according to the rocking position of the side-rocking plate to rotate a reading-side roller; and a writing-side rocking gear that is driven to rotate by the writing-side idler gear. A write-side rocker plate on which the write-side idler gear and the write-side rocker gear are rotatably mounted and which rocks by a predetermined angle around the center of the write-side idler gear; A write-side roller gear mechanism that meshes with the write-side rocker gear to rotate the write-side roller in accordance with the rocking position of the read-side rocker, and the read-side rocker or the write-side rocker. Depending on the swinging state of the moving plate A mode switching gear that meshes with the reading-side rocking gear or the writing-side rocking gear and is driven to rotate; a mode switching gear attached to the mode switching gear; The leading end of the swinging plate abuts and the position changes due to the rotation of the mode switching gear to restrict the movement of the leading end of the reading-side swinging plate and the leading end of the writing-side swinging plate, thereby causing the reading-side swinging. A cam for switching between the three operation modes by switching the meshing between a gear and the reading-side roller gear mechanism and the meshing between the writing-side swing gear and the writing-side roller gear mechanism; and a mode switching gear. And a mode detecting unit that is turned on / off by the attached cam to detect a rotational position of the mode switching gear, and controls the rotation of the drive motor based on a detection result of the mode detecting unit, thereby performing the operation. Mode switching An image reading and recording apparatus for performing replacement. 2. The image reading and recording apparatus according to claim 1, wherein the operation mode of the image reading and recording apparatus when the image reading and recording apparatus is in a standby state is the reading mode. 3. The image reading and recording apparatus according to claim 1, wherein the operation mode at the time of completion of assembly of the image reading and recording apparatus is the copy mode.
The image reading and recording apparatus according to the above.