JP2003211758A - Image reading/recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image reading/recording apparatus capable of being reduced in size and in cost. <P>SOLUTION: A carriage 4 is equipped with a drive switching gear 41 for transferring a driving force to a reading drive gear chain 42 only on a drive switching position. When a reading command is issued, the carriage 4 moves to the drive switching position. As a result, the driving of the recording drive gear chain and the reading drive gear chain 42 can be performed by means of a driving motor as a common driving source. A manuscript and a recording sheet do not need to pass through different conveyance passages and share the identical conveyance passage so that it is possible to realize miniaturizing of the apparatus and reduction of the cost. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading / recording apparatus integrally provided with an image reading unit for reading an image of an original and a recording unit for forming an image on a recording sheet, and more specifically, an image for a facsimile or the like. The present invention relates to a reading / recording device.

[0002]

2. Description of the Related Art Conventionally, in an image reading / recording apparatus such as a facsimile having a recording section and a reading section, an apparatus has been proposed which conveys a document and a recording sheet on the same path for the purpose of downsizing the apparatus and reducing the cost. There is.

For example, a recording cartridge and a reading cartridge are selectively used (see Patent Document 1).
However, replacing the cartridge is a time-consuming task for the user. Also, if you do not care about storing unused cartridges, clogging of recording cartridges,
Problems such as scratches on the reading cartridge have been a problem.

Further, a mode has been proposed in which a reading unit and a recording unit are provided on a carriage (see Patent Document 2). this is,
Although it is possible to save the above-mentioned trouble of proper use, it is against the miniaturization because the size of the device in the width direction becomes large.

[0005]

[Patent Document 1] Japanese Patent Laid-Open No. 05-012212

[Patent Document 2] Japanese Patent Laid-Open No. 05-236217

[0006]

Therefore, it has been required to realize the downsizing and cost reduction of the device without impairing the operability of the user.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide an image reading / recording apparatus which is downsized and the cost is reduced.

[0008]

In order to achieve the above object, in the present invention, a document feeding means for feeding a document,
Recording sheet feeding means for feeding a recording sheet, a drive source for generating a drive for the document feeding means and the recording sheet feeding means, and a document for transmitting drive from the driving source to the document feeding means Drive transmission means, recording sheet drive transmission means for transmitting drive from the drive source to the recording sheet feeding means, moving means movable in the direction perpendicular to the conveying direction of the recording sheet, and moving means on the moving means. A moving means for switching the drive from the drive source to the original drive transmitting means at the drive switching position, and transmitting the drive to the original drive transmitting means. To do.

It is preferable that the drive switching position is a position where the moving means is moved to a position outside the recording area where the recording operation by the recording means is not performed.

It is preferable to have a recording sheet separating means.

It is preferable to have a document separating means.

Recording sheet separating means, document separating means,
It is preferable to have

It is preferable that the moving means has a gear and transmits the drive from the drive source to the document drive transmitting means by gear engagement at the drive switching position.

It is preferable that the original and the recording sheet pass through the same conveyance path.

It is preferable that the original and the recording sheet pass through the same conveying path, and the image reading means is provided in the conveying path.

It is preferable that the recording means is an ink jet recording system for recording on a recording sheet by ejecting ink according to a signal.

It is preferable that the moving means has a protection mechanism that covers the ink ejection mechanism provided in the recording means at the drive switching position.

It is preferable that the moving means has an ink containing mechanism capable of ejecting ink from the recording means at a drive switching position.

Therefore, it is possible to use the same drive source for conveying the original and the recording sheet, and it is possible to realize the downsizing and cost reduction of the apparatus. Further, since the original and the recording sheet do not have to pass through different transport paths and share the same transport path, it is possible to further reduce the size of the apparatus and reduce the cost.

By rotating in a first direction, a paper feed tray on which recording sheets are stacked, a document tray on which originals are stacked, and the recording sheets in the paper feeding tray are fed, and the first tray
And a guide for guiding a recording sheet or a document sent by the paper feed roller by rotating in a second direction opposite to the above direction, A carriage supported by a conveyance roller that conveys a recording sheet or a document sent by a document, a reading sensor that reads an image of the document guided by the guide, and a carriage that reciprocates in the width direction of the recording sheet that is sent. A recording head that records an image on a recording sheet guided by the guide while reciprocating by a guide; a first gear train that transmits a drive to rotate the paper feed roller in a first direction; And a first motor movable to a position for transmitting the drive of the motor to the first gear train and a position for not transmitting the drive of the motor to the first gear train. A drive transmission gear, wherein the first drive transmission gear is movable to a position for transmitting the drive of the motor to the first gear train when the carriage moves to the first position. Characterize.

It is preferable that, when the carriage is out of the first position, the first drive transmission gear is fixed to a position where the drive is not transmitted to the first gear train.

When the carriage is in the first position,
It is preferable that the driving force of the motor causes the first drive transmission gear to move to a position where the drive is transmitted to the first gear train.

By rotating in the first direction, the paper feed tray on which the recording sheets are stacked, the original tray on which the originals are stacked, and the recording sheets in the paper feeding tray are fed to the first tray.
And a guide for guiding a recording sheet or a document sent by the paper feed roller by rotating in a second direction opposite to the above direction, A carriage supported by a conveyance roller that conveys a recording sheet or a document sent by a document, a reading sensor that reads an image of the document guided by the guide, and a carriage that reciprocates in the width direction of the recording sheet that is sent. A recording head that records an image on a recording sheet guided by the guide while reciprocating by a guide; a second gear train that transmits a drive to rotate the paper feed roller in a second direction; And a second motor movable to a position for transmitting the drive of the motor to the second gear train and a position for not transmitting the drive of the motor to the second gear train. A drive transmission gear, and the second drive transmission gear moves to a position where the drive of the motor is transmitted to the second gear train when the carriage moves to the second position. To do.

It is preferable that the second drive transmission gear is movable together with the carriage.

By rotating in the first direction, the paper feed tray on which the recording sheets are stacked, the original tray on which the originals are stacked, and the recording sheets in the paper feeding tray are fed to the first tray.
And a guide for guiding a recording sheet or a document sent by the paper feed roller by rotating in a second direction opposite to the above direction, A carriage supported by a conveyance roller that conveys a recording sheet or a document sent by a document, a reading sensor that reads an image of the document guided by the guide, and a carriage that reciprocates in the width direction of the recording sheet that is sent. A recording head that records an image on a recording sheet guided by the guide while reciprocating by a guide; a first gear train that transmits a drive to rotate the paper feeding roller in a first direction; A second gear train that transmits drive to rotate the roller in a second direction, a motor that drives the transport roller, and a motor. A first drive transmission gear that is movable between a position that transmits the drive of the motor to the first gear train and a position that does not transmit the drive, and a position that transmits the drive of the motor to the second gear train and a position that does not transmit the drive. A second drive transmission gear movable to the first gear train, the first drive transmission gear transmitting the drive of the motor to the first gear train when the carriage moves to the first position. When the carriage moves to the second position, the second drive transmission gear moves to a position where the drive of the motor is transmitted to the second gear train.

It is preferable that when the carriage is out of the first position, the first drive transmission gear is fixed to a position where the drive is not transmitted to the first gear train.

When the carriage is in the first position,
It is preferable that the drive force of the motor causes the first drive transmission gear to move to a position where drive is transmitted to the first gear train.

It is preferable that the second drive transmission gear moves together with the carriage to a position where drive is transmitted to the second gear train.

It is preferable that the motor rotates in the same direction when rotating the paper feed roller in the first direction and when rotating the paper feed roller in the second direction.

The motor rotates in the direction for rotating the feed roller in the sheet transport direction both when the feed roller is rotated in the first direction and when the feed roller is rotated in the second direction. Is preferred.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be illustratively described in detail below with reference to the drawings. However, the dimensions of the components described in this embodiment,
Unless otherwise specified, the material, the shape, the relative arrangement, and the like are not intended to limit the scope of the present invention thereto.

An embodiment will be described with reference to FIGS. 1 to 8 by taking a facsimile apparatus as an image reading / recording apparatus for performing ink jet recording as an example.

First, the schematic structure of the features of the present invention will be described. In FIG. 1, 1 is an ink cartridge which is a recording means, and 4 is a carriage which is a moving means for mounting and moving the ink cartridge.

Reference numerals 8 and 11 denote a paper feed tray and a document tray, which are holding means for holding the recording sheet and the document, respectively.

The recording sheet 2 is fed and conveyed by the sheet feeding roller 10 and the pressure plate 9 which are recording sheet feeding means, and the original 12 is the sheet feeding roller 10 and original feeding roller gear 42f which is the original feeding means. Paper is fed and conveyed by a document conveying roller 43a and a counter roller 43b which are coaxially arranged.

The paper feed roller 10 uses the recording drive gear train 33 (recording sheet drive transmission means or first gear train) shown in FIG. The drive is transmitted by the reading drive gear train 42 (original drive transmission unit or second gear train) shown in FIG. Driving to the recording drive gear train 33 and the reading drive gear train 42 is performed by the drive motor 20 (drive source or motor) that is the same drive source.

The carriage 4 has the reading drive gear train 42 only at the drive switching position 101 (second position) shown in FIG.
It has a drive switching gear 41 (second drive transmission gear) for transmitting drive to the carriage, and the carriage moves to the drive switching position 101 when a read command is issued.

Next, the schematic structure of the facsimile apparatus will be described.

(Recording Means) The recording means records an ink image on the recording sheet conveyed by the conveying means. As a recording means in this apparatus, an inkjet recording method is used in which ink is ejected from a recording head to perform recording. That is, this recording head has a fine liquid discharge port (orifice), a liquid passage and an energy acting portion provided in a part of this liquid passage, and energy generation for generating droplet forming energy for acting on the liquid in the acting portion. Equipped with means.

As an energy generating means for generating such energy, a recording method using an electromechanical transducer such as a piezo element, electromagnetic waves such as a laser are irradiated to generate heat, and droplets are ejected by the action of the heat generation. There are a recording method using an energy generating means, a recording method using an energy generating means for heating a liquid and discharging the liquid by an electrothermal converter such as a heating element having a heating resistor.

Among them, a recording head used in an ink jet recording method for ejecting a liquid by thermal energy has a high density of liquid ejection ports (orifices) for ejecting recording liquid droplets to form ejection liquid droplets. Since they can be arranged, high resolution recording is possible. Among them, the recording head using the electrothermal converter as the energy generating means can be easily made compact, and has the advantages of the IC technology and the microfabrication technology, which have been remarkably improved in the technology and the reliability in the recent semiconductor field. It is advantageous because it can be used for various purposes, high-density mounting is easy, and manufacturing cost is low.

In the present embodiment, as shown in FIG. 2, a disposable type ink cartridge 1 in which a recording head and an ink tank are integrated is used. A platen 3 for supporting the recording sheet 2 is provided at a position facing the ink cartridge 1.

(Carriage) As shown in FIG. 4, reference numeral 4 is a carriage on which the ink cartridge 1 is mounted and which scans in the width direction of the recording sheet 2. An endless belt-shaped timing belt 6 hung around a pulley 5 driven by a drive source (not shown) is connected to the carriage 4, and the carriage 4 is guided to a guide rail 7 by rotationally driving the pulley 5. It is to reciprocate along it.

The carriage 4 normally stands by at the waiting position 100 (first position) at the right end of the guide rail 7, and at this time the nozzle tip of the cartridge 1 is covered with a rubber member (not shown) to protect the print head from drying. Has been done.

As shown in FIGS. 7 and 8, the pendulum gear 30
The pendulum arm 34 that supports the (first drive transmission gear) makes a pendulum motion about the axis of the feeding roller 15.
When the carriage 4 is out of the standby position 100, the lock lever 50 is pulled by the coil spring 52 engaged with the hook 50c to move in the F direction in FIG. 7, and the lock pin 50b is engaged with the engaging hole 34a of the pendulum arm 34. The pendulum arm 34 is locked and the swinging thereof is restricted by fitting it to.

When the carriage 4 moves to the standby position 100, the engaging portion 4a formed on the carriage 4 comes into contact with the engaging protrusion 50a formed on the lock lever 50 and locks against the biasing force of the coil spring 52. The lever 50 is moved in the E direction. Then, the lock pin 50b is engaged with the engaging hole 34.
The lock is released after coming out of a. Meanwhile pendulum gear 3
With 0, the pendulum movement centering on the axis of the feeding roller 15 becomes possible.

When the drive motor 20 shown in FIG. 1 rotates clockwise with the carriage 4 moved to the standby position 100, the output gear 20a of the drive motor 20 and the idler gear 2 are rotated.
Drive is transmitted to the first roller gear 15b provided at the end of the feeding roller 15 via 0b.

Therefore, as shown in FIG.
Rotates in the sheet conveying direction. At the same time, the second roller gear 15c provided on the recovery system side of the feeding roller 15 rotates in the C direction, and the pendulum gear 30 moves to the recording drive gear 32 side and meshes therewith to drive the recording drive gear train 33. introduce.

The recording drive gear train 33 is a recording drive gear 32.
And the drive pulley 3 fixed coaxially with the recording drive gear 32.
2a, a pulley 32b to which drive is transmitted from the drive pulley 32a via a belt 32c, a gear 32c coaxially fixed to the pulley 32b, and 33a, 3a meshing with the drive gear 32c.
3b. The driving force is transmitted to the recording paper feeding gear 10a fixed coaxially with the paper feeding roller 10 via the gear train 33, and rotates the paper feeding roller clockwise (direction A).

The gear train 33 may be composed of only gears without including belts and pulleys.

On the contrary, when the feeding roller 15 rotates in the direction opposite to the sheet conveying direction, the second roller gear 15c rotates in the D direction, the pendulum gear 30 moves to the head recovery gear 31 side, and a recovery system (not shown). The drive is transmitted to the gear train to perform operations such as ink suction of the recording head.

When the carriage 4 moves out of the standby position 100, the lock lever 50 is moved to the left in FIG. 4 by the spring force and fitted into the pendulum arm hole. As a result, power is not transmitted to the recording drive gear train 33 and the recovery gear train.

(Recording Sheet Feeding Means) As shown in FIG. 3, reference numeral 8 is a recording sheet feeding tray capable of stacking and storing a plurality of recording sheets 2. 10 is a paper feed roller, the surface of which is made of rubber. The paper feed roller 10 has an arc portion that contacts the sheet and a chord portion that does not contact the sheet.

When the drive motor 20 is rotated while the carriage 4 is moved to the standby position 100 and the pendulum arm 34 is unlocked, the drive is transmitted to the recording paper feeding gear 10a via the recording drive gear train 33. It

The paper feed roller 10 and the pressure plate releasing cam 35 fixed coaxially thereto rotate in the clockwise direction (direction A). Since the pressure plate releasing cam 35, which is in contact with the protrusion 9a and presses down the pressure plate 9, is released from the protrusion 9a by the rotation, a spring force (not shown) pulls up the pressure plate 9, and as a result, the recording sheet 2 can be pressed against the sheet feeding roller 10. It becomes a state. In this state, the paper feed roller 10 rotates in the direction of arrow A so that the circular arc portion conveys the recording sheet 2.

The recording sheet 2 sent by the paper feed roller 10 is separated by a separating claw (not shown), and only the uppermost set recording sheet is conveyed.

(Document Feeding Means) As shown in FIG.
Is a document tray that can store a plurality of documents 12. By rotating the paper feed roller 10 in the direction of arrow B, the original 12 set on the original tray 11 is conveyed.

A separation pad 13 is made of a material having a high friction coefficient such as rubber, and is urged against the paper feed roller 10 by the separation spring 14.

The leading edge of the original 12 enters a wedge shape constituted by the separation pad 13 and the paper feed roller 10, and among the originals held in the wedge shape, only the lowermost original is rubbed by the paper feed roller 10. Be transported.

In the present embodiment, although the separation mechanism is provided, in the case of a one-sheet feeding machine, the recording sheet feeding means does not necessarily require the separation claw, and the document feeding means is
No separation mechanism such as the separation pad 13 is required.

(Drive Switching) As shown in FIG. 4, a drive switching gear 41 is axially supported by the carriage 4, and when the drive switching position 101 outside the recording area at the left end of the apparatus shown in FIG. It meshes with the gear 42a of the read drive gear train 42 and the first roller gear 15b arranged on the surface.

The reading drive gear train 42 includes gears 42a and 42a.
b, 42c, 42d, 42e, 42f, 42g, 42h
have. 42f is fixed coaxially with the document conveying roller 43a. The gear 42h meshes with a document feeding gear 10b that is fixed coaxially with the paper feed roller 10.

As a result, the power from the drive motor 20 which is not transmitted when the recording sheet is fed is transmitted to the output gear 20a, the idler gear 20b, the drive switching gear 41, the reading drive gear train 42 and the document feeding gear 10b. It is transmitted to the paper feed roller 10 via the. When the drive motor 20 rotates counterclockwise in FIG. 1, the paper feed roller 10
Rotates in the direction of arrow B, and the originals 12 are separated and conveyed one by one as described above.

The carriage 4 stays at the drive switching position 101 until the conveyance of the original document is completed, and also transmits power to the original document conveyance roller 43 of the original document 12 to convey the original document. When the DES 21 detects the trailing edge of the document 12, the carriage 4 returns to the standby position 100.

At the drive switching position 101, the ink cartridge 1 periodically ejects ink droplets in order to prevent clogging due to drying of the ink head. Therefore, there is a hole shape (not shown) at a predetermined position of the platen 3, and ink is ejected there. An ink absorbing member is arranged below the hole to absorb and hold the discharged waste ink.

In the present embodiment, ink droplets are ejected as a measure for preventing ink clogging, but a protective member used at the standby position 100 may be provided instead.

(Conveyance Guide Means) The document or recording sheet fed by the paper feed roller 10 is guided by the guide 3a. As shown in FIG. 2, a feed roller 15 and a pinch roller 16 which are upstream guide means for the recording sheet 2 and the original 12 are provided. The feeding roller 15 and the pinch roller 16 are in pressure contact with each other, and the feeding roller 15
The recording sheet 2 and the original 12 delivered by the above are conveyed to the platen 3 on the downstream side.

A discharge roller 17 and a spur 18 which are downstream guide means for the recording sheet 2 and the original 12 are provided. As shown in FIG. 4, the spurs 18 are provided at a plurality of positions in the axial direction, and are made of a material that does not transfer ink even if the spurs 18 come into contact with the recording surface of the recording sheet 2 after recording.

By the cooperation action of the discharge roller 17 and the spur 18, the original 12 after reading and the recording sheet 2 after image recording are conveyed, and the recording sheet is stored in the discharge tray 19 provided outside the apparatus shown in FIG. 2 is discharged.

(Image reading means) When a command for starting the reading operation is given from the operation panel or the like (not shown), and the DS 44 for detecting the presence / absence of the document detects the presence of the document, the carriage 4 moves to the drive switching position 101. Then, the drive is transmitted to the reading drive gear train 42.

When the DS 44 detects that there is no document, an error message prompting the user to set the document is displayed on the panel and the operation is temporarily stopped.

The original 12 is separated and conveyed by the paper feed roller 10 according to the above-described operation. The end of the manuscript 12 is DES2
1 and the recording sheet sandwiched between the contact sensor 22 serving as an image reading unit or a reading sensor and the reading white background 23 enters the common conveyance path. The image of the original 12 is read by the contact sensor 22.

When the DS 44 detects the presence of a document after finishing the paper discharge operation described later, the carriage 4 is set to the drive switching position 1
The number remains at 01 and the reading operation is continued. Conversely, when the DS 44 detects that there is no document, the carriage 4 returns to the standby position.

(Recording Operation) Next, the recording operation of the facsimile apparatus configured as described above will be explained. When a command to start the recording operation is given from an operation panel or the like (not shown), the paper feed roller 10 is turned on. The recording sheets 2 stacked on the recording sheet tray 8 start to rotate in the direction A of FIG. 2 and are fed one by one from the top. When the recording sheet 2 does not reach the DES 21 after the predetermined amount is conveyed, the recording sheet conveyance is stopped due to an error, and an error display is displayed on an operation panel (not shown).

The recording sheet 2 delivered by the paper feeding roller 10 is nipped and conveyed by the feeding roller 15 and the pinch roller 16 and reaches the recording position of the platen 3.

The recording operation is performed by ejecting ink from the ink cartridge 1 according to image information while the carriage 4 reciprocates.

After the recording, the recording sheet 2 is ejected by the discharge roller 1.
It is sandwiched by 7 and a spur 18 and conveyed, and sequentially discharged and stacked on a discharge tray 19 outside the apparatus.

[0078]

As described above, the apparatus has a document feeding means and a recording sheet feeding means for feeding a document and a recording sheet respectively, and a document driving transmission means and a recording sheet driving transmission means for driving them. Those drives are driven by the same drive source, and the switching of the drive is transmitted by the presence or absence of meshing of the drive switching gear included in the moving means for moving the recording means. It becomes possible to provide an image reading / recording device that can be used, and that can reduce the size and cost of the device. Further, since the original and the recording sheet do not have to pass through different conveying paths and share the same conveying path, it is possible to provide an image reading / recording apparatus which realizes further downsizing of the apparatus and cost reduction. .

[Brief description of drawings]

FIG. 1 is an apparatus cross-sectional view showing a schematic configuration of a document drive transmission unit of an image reading and recording apparatus according to an embodiment.

FIG. 2 is a device cross-sectional view showing a schematic configuration of an image reading / recording device according to an embodiment.

FIG. 3 is an apparatus cross-sectional view showing a schematic configuration of a reading drive transmission unit in the image reading / recording apparatus according to the embodiment.

FIG. 4 is a top view of a recording unit in the image reading / recording apparatus according to the embodiment.

FIG. 5 is a top view of the recording unit in the image reading / recording apparatus according to the embodiment.

FIG. 6 is a top view of a recording unit in the image reading / recording apparatus according to the embodiment.

FIG. 7 is a perspective view of a carriage standby position in the image reading / recording apparatus according to the embodiment.

FIG. 8 is a perspective view of a carriage standby position showing a relationship among a lock lever, a pendulum gear, a pendulum arm, a head recovery gear, and a recording drive gear in the image reading and recording apparatus according to the embodiment.

[Explanation of symbols]

1 ink cartridge 2 Recording sheet 3 Platen 4 carriage 5 pulleys 6 Timing belt 7 Guide rail 8 Recording sheet tray 9 Pressure plate 10 Paper feed roller 11 Document tray 12 manuscripts 13 Separation pad 14 Separation spring 15 Feed roller 16 pinch rollers 17 Discharge roller 18 spurs 19 Ejection tray 20 drive motor 21 DES 22 Contact sensor 23 Read white background 30 pendulum gear 31 head recovery gear 32 recording drive gear 33 Recording drive gear train 34 Pendulum arm 35 Pressure plate release cam 41 Drive switching gear 42 Read drive gear train 43 Document transport roller 44 DS 50 lock lever 52 coil spring 100 standby position 101 Drive switching position

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 1/04 H04N 1/12 Z 5C072 107 B41J 3/04 101Z (72) Inventor Takashi Awai Ota Ward, Tokyo 3-30-2 Shimomaruko Canon Inc. (72) Inventor Takayuki Nishinohara 3-30-2 Shimomaruko Ota-ku, Tokyo Canon Inc. F-term (reference) 2C056 EA23 EA24 HA28 HA29 HA37 HA38 HA55 HA58 2C059 AA00 2C064 AA02 AA03 FF01 FF06 FF08 2C480 CA01 CA02 CB07 CB11 3F049 EA00 LA05 LB02 5C072 AA05 BA01 BA20 KA01 NA01 NA07 NA08 RA06 WA01

Claims (22)

[Claims] 1. A document feeding unit for feeding a document, a recording sheet feeding unit for feeding a recording sheet, and a drive source for generating a drive for the document feeding unit and the recording sheet feeding unit. An original drive transmission means for transmitting drive from the drive source to the original feeding means; a recording sheet drive transmission means for transmitting drive from the drive source to the recording sheet feeding means; And a recording unit that is disposed on the moving unit and performs a recording operation on a recording sheet, the moving unit being the drive switching position. An image reading and recording apparatus, characterized in that the drive from the drive source is switched to and transmitted to. 2. The image reading / recording apparatus according to claim 1, wherein the drive switching position is a position where the moving unit is moved to a position outside a recording area where the recording unit does not perform a recording operation. . 3. The image reading and recording apparatus according to claim 1, further comprising a recording sheet separating unit. 4. The image reading and recording apparatus according to claim 1, further comprising a document separating unit. 5. A recording sheet separating means, a document separating means,
The image reading / recording apparatus according to claim 1 or 2, further comprising: 6. The moving means has a gear, and the drive from the drive source is transmitted to the document drive transmitting means by gear engagement at the drive switching position. The image reading / recording apparatus according to any one of items. 7. The image reading / recording apparatus according to claim 1, wherein the original and the recording sheet pass through the same conveyance path. 8. The image reading / recording apparatus according to claim 1, wherein the original and the recording sheet pass through the same conveying path, and the image reading means is provided in the conveying path. . 9. The image reading apparatus according to claim 1, wherein the recording unit is an ink jet recording system that ejects ink in accordance with a signal to perform recording on a recording sheet. Recording device. 10. The image reading / recording apparatus according to claim 9, wherein the moving unit has a protection mechanism that covers an ink ejection mechanism provided in the recording unit at a drive switching position. 11. The image reading and recording apparatus according to claim 9, wherein the moving unit has an ink containing mechanism capable of ejecting ink from the recording unit at a drive switching position. 12. A paper feed tray for stacking recording sheets, a document tray for stacking documents, and a recording sheet in the paper feed tray for feeding in the first direction by rotating in a first direction. A paper feed roller that feeds the original in the original tray by rotating in the opposite second direction, a guide that guides the recording sheet or the original sent by the paper feed roller, and a feed roller that feeds the original. A conveyance roller that conveys the recording sheet or the original document, a reading sensor that reads the image of the original document guided by the guide, and a carriage that reciprocates in the width direction of the recording sheet that is conveyed. While rotating the recording head for recording an image on the recording sheet guided by the guide and the paper feed roller in the first direction. A first gear train that transmits a drive for driving the motor, a motor that drives the transport roller, and a first gear train that is movable between a position for transmitting the drive of the motor to the first gear train and a position for not transmitting the drive. Drive transmission gear,
An image reading device, characterized in that the first drive transmission gear is movable to a position for transmitting the drive of the motor to the first gear train when the carriage moves to the first position. Recording device. 13. The method according to claim 12, wherein the first drive transmission gear is fixed to a position where the drive is not transmitted to the first gear train when the carriage is disengaged from the first position. The image reading and recording apparatus described. 14. When the carriage is at the first position, the driving force of the motor causes the first drive transmission gear to move to a position where the drive is transmitted to the first gear train. The image reading / recording apparatus according to claim 12. 15. A paper feed tray on which recording sheets are stacked, a document tray on which originals are stacked, and a recording sheet in the paper feeding tray that is fed by rotating in a first direction, and in the first direction. A paper feed roller that feeds the original in the original tray by rotating in the opposite second direction, a guide that guides the recording sheet or the original sent by the paper feed roller, and a paper feed roller that feeds the original. A conveyance roller that conveys the recording sheet or the original document, a reading sensor that reads the image of the original document guided by the guide, and a carriage that reciprocates in the width direction of the recording sheet that is conveyed. Meanwhile, the recording head for recording an image on the recording sheet guided by the guide and the paper feed roller are rotated in the second direction. A second gear train that transmits drive for driving the motor, a motor that drives the transport roller, and a second gear that is movable between a position that transmits the drive of the motor to the second gear train and a position that does not transmit the drive. Drive transmission gear,
An image reading / recording apparatus, wherein the second drive transmission gear moves to a position where the drive of the motor is transmitted to the second gear train when the carriage moves to the second position. . 16. The image reading / recording apparatus according to claim 15, wherein the second drive transmission gear is movable together with the carriage. 17. A paper feed tray for stacking recording sheets, a document tray for stacking documents, and a recording sheet in the paper feed tray for feeding in the first direction by rotating in a first direction. A paper feed roller that feeds the original in the original tray by rotating in the opposite second direction, a guide that guides the recording sheet or the original sent by the paper feed roller, and a feed roller that feeds the original. A conveyance roller that conveys the recording sheet or the original document, a reading sensor that reads the image of the original document guided by the guide, and a carriage that reciprocates in the width direction of the recording sheet that is conveyed. While rotating the recording head for recording an image on the recording sheet guided by the guide and the paper feed roller in the first direction. A first gear train that transmits a drive to rotate the feed roller, a second gear train that transmits a drive to rotate the paper feed roller in a second direction, a motor that drives the transport roller, and a motor A first drive transmission gear that is movable between a position that transmits the drive of the motor to the first gear train and a position that does not transmit the drive, and a position that transmits the drive of the motor to the second gear train and a position that does not transmit the drive. A second drive transmission gear movable to
When the carriage moves to the first position, the first drive transmission gear moves to a position for transmitting the drive of the motor to the first gear train, and the carriage moves to the second position. An image reading / recording apparatus, wherein the second drive transmission gear moves to a position where the drive of the motor is transmitted to the second gear train when moved. 18. The method according to claim 17, wherein when the carriage is disengaged from the first position, the first drive transmission gear is fixed to a position that does not transmit drive to the first gear train. The image reading and recording apparatus described. 19. The drive force of the motor causes the first drive transmission gear to move to a position for transmitting drive to the first gear train when the carriage is at the first position. The image reading / recording apparatus according to claim 18. 20. The image reading / recording apparatus according to claim 17, wherein the second drive transmission gear moves together with the carriage to a position where drive is transmitted to the second gear train. . 21. The motor rotates in the same direction when rotating the paper feed roller in a first direction and when rotating the paper feed roller in a second direction. 21. The image reading / recording apparatus according to any one of 20 to 20. 22. The motor rotates in a direction for rotating the feed roller in the sheet transport direction both when the feed roller is rotated in the first direction and when the feed roller is rotated in the second direction. 22. The image reading / recording apparatus according to claim 21, wherein