JP6945299B2 - Sheet transfer device - Google Patents

Description

The present invention relates to a transport device for transporting a sheet, a control method thereof, and an information reading device for reading information from the sheet.

Copiers, scanners, printers, and the like are known to have a mechanism for transporting a plurality of sheets one by one. For example, in a scanner, an image reading device is known in which a bundle of originals such as checks and documents is placed on a platen, and the images of the originals are read while being separated and conveyed one by one by a feeding mechanism.

Japanese Unexamined Patent Publication No. 2014-72564 Japanese Unexamined Patent Publication No. 2016-02279

The device disclosed in Patent Document 1 is provided with a discharge tray on the sheet discharge port side of the housing. As a result, the sheet to be discharged is received and the alignment is improved.

However, there is a problem that the sheets cannot always be received in a well-aligned manner depending on the type of paper to be discharged from the discharge tray described in Patent Document 1.

Further, in the apparatus disclosed in Patent Document 2, in response to the problem of Patent Document 1, a tray support portion is provided in the housing and the discharge tray is lifted to improve the alignment.

However, in the method described in Patent Document 2, the tray support portion comes into contact with the surface facing the front of the housing in a state where the discharge tray is folded toward the housing (stored state). Therefore, when the surface of the discharge tray is scratched or soiled due to friction with the tray support portion, the position becomes visible to the user, and there is a problem that the appearance is spoiled in the stored state.

The present invention provides a technique capable of improving the alignment of discharged sheets without spoiling the aesthetic appearance of the discharged tray in the stored state.

According to the present invention
With the device body
The air supply port provided in the main body of the device and
A transport means for transporting the sheet fed from the feed port along the transport path, and
A discharge port for discharging the sheet from the apparatus main body, and a discharge port.
The sheet is received in a stored state in which the upper part of the discharge port is stored in the front surface of the device main body and a deployed state in which the sheet is deployed at a position below the discharge port and is discharged from the discharge port. A discharge tray that is rotatably mounted around a shaft provided at a position away from the surface,
It is provided with a tray support portion that is pulled out from the first position toward the second position that is the lower part of the discharge port.
The discharged tray in the unfolded state is located higher in the state where the tray support portion is in contact with the tray support portion in the second position than in the case where the tray support portion is in the first position.
The tray support portion at the second position is characterized in that it abuts on an end portion of the discharge tray that has been rotated from the stored state to the deployed state on the side close to the discharge port.

According to the present invention, it is possible to adjust the angle of the discharge tray and improve the alignment of a wide variety of sheets without spoiling the aesthetic appearance of the discharge tray in the stored state.

The schematic diagram of the image reading apparatus which concerns on one Embodiment of this invention. The block diagram of the control unit of the image reader of FIG. The front view of the image reading apparatus which concerns on one Embodiment of this invention. Another front view of the image reading device according to the embodiment of the present invention. Top view of the image reader according to the embodiment of the present invention. Another top view of the image reader according to the embodiment of the present invention. Schematic cross-sectional view of an image reader according to an embodiment of the present invention. Another schematic cross-sectional view of an image reader according to an embodiment of the present invention. The side view of the image reading apparatus which concerns on one Embodiment of this invention. The side view of the image reading apparatus which concerns on one Embodiment of this invention. Sectional drawing of the main part of the image reading apparatus which concerns on one Embodiment of this invention. FIG. 3 is a cross-sectional view of an image reading unit of an image reading device according to an embodiment of the present invention. Another side view of the image reader according to the embodiment of the present invention. An enlarged view of a main part of an image reading device according to another embodiment of the present invention.

(First Embodiment)
FIG. 1 is a schematic view of an image reading device A according to an embodiment of the present invention.

<Device configuration>
The image reading device A is a device that transports one or a plurality of transport media S loaded on the mounting table 1 one by one into the device by a route RT, reads the image, and discharges the image to the discharge tray 2. The transport medium S to be read is, for example, a sheet of OA paper, a check, a check, a business card, a card, or the like, and may be a thick sheet or a thin sheet. Examples of cards include insurance cards, driver's licenses, credit cards and the like. The transport medium S also includes a booklet such as a passport. When targeting a booklet, the holder 200 can be used. By accommodating the booklet in the spread state in the transparent holder 200 and placing it on the mounting table 1, the booklet is conveyed together with the holder 200 and the image can be read.

<Supply>
A first transport unit 10 is provided as a feed mechanism for feeding the transport medium S from the feed port along the route RT. In the case of the present embodiment, the first transport unit 10 includes a feed roller 11 and a separation roller 12 arranged to face the feed roller 11, and sequentially transfers the transport media S on the mounting table 1 in the transport direction D1. Transport. The driving force is transmitted to the feed roller 11 from the drive unit 3 of the motor or the like via the transmission unit 5, and is rotationally driven in the direction of the arrow in the figure (the forward direction in which the transfer medium S is conveyed along the path RT). The transmission unit 5 is, for example, an electromagnetic clutch, and interrupts the driving force from the driving unit 3 to the feed roller 11.

<Drive>
The transmission unit 5 that connects the drive unit 3 and the feed roller 11 is, for example, in the present embodiment, in a state in which the driving force is transmitted in a normal state, and when the transport medium S is reversely fed or stopped, the driving force is applied. Cut off. When the transmission of the driving force is cut off by the transmission unit 5, the feed roller 11 is in a state where it can freely rotate. It should be noted that such a transmission unit 5 may not be provided when the feed roller 11 is driven in only one direction.

<Separation structure>
The separation roller 12 arranged to face the feed roller 11 is a roller for separating the transport media S one by one, and is in pressure contact with the feed roller 11 at a constant pressure. In order to secure this pressure contact state, the separation roller 12 is provided so as to be swingable and urged by the feed roller 11. The driving force is transmitted from the driving unit 3 via the torque limiter 12a, and the separation roller 12 is rotationally driven in the direction of the solid arrow (the direction opposite to the forward direction of the feed roller 11).

Since the torque limiter 12a regulates the transmission of the driving force, the separation roller 12 rotates in the direction (in the direction of the broken arrow arrow) that accompanies the feed roller 11 when it is in contact with the feed roller 11. As a result, when a plurality of transport media S are transported to the pressure contact portion between the feed roller 11 and the separation roller 12, two or more transport media S are dammed so as not to be transported downstream, leaving one. ..

In the present embodiment, the separation roller 12 and the feed roller 11 form a separation mechanism, but such a separation mechanism does not necessarily have to be provided, and the transport media S are sequentially fed to the path RT one by one. Any feeding mechanism may be used. Further, when the separation mechanism is provided, instead of the configuration like the separation roller 12, a separation pad that applies a frictional force to the transport medium S is pressed against the feed roller 11 to have the same separation action. You may.

<Transport structure>
The second transport unit 20 as a transport mechanism on the downstream side of the first transport unit 10 in the transport direction includes a drive roller 21 and a driven roller 22 driven by the drive roller 21, and has been transported from the first transport unit 10. The transport medium S is transported to the downstream side thereof. A driving force is transmitted to the drive roller 21 from a drive unit 4 such as a motor, and the drive roller 21 is rotationally driven in the direction of the arrow in the drawing. The driven roller 22 is pressed against the drive roller 21 at a constant pressure and is brought around to the drive roller 21. The driven roller 22 may be urged with respect to the drive roller 21 by an urging unit (not shown) such as a spring.

The third transport unit 30 located downstream of the second transport unit 20 in the transport direction includes a drive roller 31 and a driven roller 32 driven by the drive roller 31, and has been transported from the second transport unit 20. The transport medium S is transported to the discharge tray 2. That is, the third transport unit 30 functions as a discharge mechanism.

A driving force is transmitted to the drive roller 31 from a drive unit 4 such as a motor, and the drive roller 31 is rotationally driven in the direction of the arrow in the drawing. The driven roller 32 is pressed against the drive roller 31 at a constant pressure and is brought around to the drive roller 31. The driven roller 32 may be urged with respect to the drive roller 31 by an urging unit (not shown) such as a spring.

The discharge tray 2 is pivotally supported via a first hinge 101 provided below the image reading device A so as to be rotatable with respect to the image reading device A. Further, it is composed of a first discharge tray 2a on the first hinge 101 side, a first extension tray 2b connected to the tip end side thereof, a second extension tray 2c, and a third extension tray 2d. The first extension tray 2b is slidably supported with respect to the first discharge tray 2a, the second extension tray 2c is slidably supported with respect to the first extension tray 2b, and the third extension tray 2c is slidably supported. The 2d is slidably supported with respect to the second extension tray 2c.

<Image reading structure, control>
Here, in the image reading device A of the present embodiment, since the image is read by the image reading unit 70 arranged between the second transport unit 20 and the third transport unit 30, the second transport unit 20 and the second transport unit 20 3 The transport unit 30 transports the transport medium S at a constant speed. By always setting the transport speed to be equal to or higher than the transport speed of the first transport unit 10, it is possible to reliably avoid a situation in which the succeeding transport medium S catches up with the preceding transport medium S. For example, in the present embodiment, the transfer speed of the transfer medium S by the second transfer unit 20 and the third transfer unit 30 is controlled so as to be faster than the transfer speed of the transfer medium S by the first transfer unit 10. bottom.

Even when the transport speed of the transport medium S by the second transport unit 20 and the third transport unit 30 and the transport speed of the transport medium S by the first transport unit 10 are the same conditions, the drive unit 3 is controlled. It is also possible to form a minimum distance between the preceding transport medium S and the succeeding transport medium S by intermittently shifting the feed start timing of the succeeding transport medium S.

<Double feed detection>
When the double feed detection sensor 40 arranged between the first transport unit 10 and the second transport unit 20 has the transport media S such as paper in close contact with each other due to static electricity or the like and has passed through the first transport unit 10 ( That is, it is an example of a detection sensor (a sensor that detects the behavior and state of the sheet) for detecting this in the case of a double feed state in which the sheets are transported in an overlapping manner. Various types of double feed detection sensors 40 can be used, but in the case of the present embodiment, they are ultrasonic sensors, which include an ultrasonic wave transmitting unit 41 and a receiving unit 42 thereof, and are a transport medium such as paper. The double feed is detected on the principle that the amount of attenuation of the ultrasonic waves passing through the transport medium S is different between the case where S is double-fed and the case where S is transported one by one.

<Resist sensor>
The medium detection sensor 50 arranged on the downstream side in the transport direction from the double feed detection sensor 40 is on the upstream side of the second transport unit 20 and on the downstream side of the first transport unit 10. This is an example as an upstream detection sensor (sensor that detects the behavior and state of the sheet), and is transported to the position of the transport medium S transported by the first transport unit 10, specifically, to the detection position of the medium detection sensor 50. Detects whether the end of the medium S has reached or passed. Various media detection sensors 50 can be used, but in the case of the present embodiment, the medium detection sensor 50 is an optical sensor, includes a light emitting unit 51 and a light receiving unit 52 thereof, and receives light when the transport medium S reaches or passes through. The transport medium S is detected on the principle that the intensity (light receiving amount) changes.

In the case of the present embodiment, when the tip of the transport medium S is detected by the medium detection sensor 50, the transport medium S has reached a position where double feed can be detected by the double feed detection sensor 40. The medium detection sensor 50 is provided on the downstream side in the vicinity of the double feed detection sensor 40. The medium detection sensor 50 is not limited to the above optical sensor, and for example, a sensor (image sensor or the like) capable of detecting the end of the transport medium S may be used, or a lever type sensor protruding in the path RT may be used. It may be a sensor.

A medium detection sensor 60 different from the medium detection sensor 50 is arranged on the upstream side of the image reading unit 70. This is an example of a detection sensor on the downstream side arranged on the downstream side of the second transport unit 20, and detects the position of the transport medium S transported by the second transport unit 20. Various media detection sensors 60 can be used, but in the case of the present embodiment, the medium detection sensor 60 is an optical sensor similar to the medium detection sensor 50, and includes a light emitting unit 61 and a light receiving unit 62, and is a transport medium S. The transport medium S is detected on the principle that the light receiving intensity (light receiving amount) changes depending on the arrival or passage. In the present embodiment, the medium detection sensors 50 and 60 are arranged on the upstream side and the downstream side of the second transport unit 20 in the transport direction, respectively, but only one of them may be used.

<Arrangement of CIS>
The image reading unit 70 located on the downstream side of the medium detection sensor 60 is, for example, optically scanned, converted into an electric signal, and read as image data, and has a light source such as an LED, an image sensor, and a lens array inside. Etc. are provided. In the case of the present embodiment, the image reading units 70 are arranged one by one on both sides of the path RT, and read the front and back surfaces of the transport medium S. However, one may be arranged only on one side of the path RT to read only one side of the transport medium S. Further, in the present embodiment, the image reading units 70 are arranged to face each other on both sides of the path RT, but for example, they may be arranged at intervals in the direction of the path RT.

<Explanation of block diagram>
The control unit 80 will be described with reference to FIG. FIG. 2 is a block diagram of the control unit 80 of the image reading device A.

The control unit 80 includes a CPU 81, a storage unit 82, an operation unit 83, a communication unit 84, and an interface unit 85. The CPU 81 controls the entire image reading device A by executing the program stored in the storage unit 82. The storage unit 82 is composed of, for example, a RAM, a ROM, or the like. The operation unit 83 is composed of, for example, a switch, a touch panel, or the like, and receives an operation from an operator.

The communication unit 84 is an interface for performing information communication with an external device. When a PC (personal computer) is assumed as the external device, the communication unit 84 may include, for example, a USB interface or a SCSI interface. Further, in addition to such a wired communication interface, the communication unit 84 may be used as a wireless communication interface, and may include both wired communication and wireless communication interfaces.

The interface unit 85 is an I / O interface that inputs / outputs data to / from the actuator 86 and the sensor 87. The actuator 86 includes a drive unit 3, a drive unit 4, a transmission unit 5, and the like. The sensor 87 includes a double feed detection sensor 40, medium detection sensors 50 and 60, an image reading unit 70, and the like.

<Drive by receiving start instruction from PC>
The basic operation of the image reader A will be described. When the control unit 80 receives, for example, an image reading start instruction from an external personal computer to which the image reading device A is connected, the control unit 80 starts driving the first to third transport units 10 to 30. The transport media S loaded on the mounting table 1 are transported one by one from the transport medium S located at the bottom thereof.

Further, as will be described later, the image reading may be started by the start key provided on the operation unit 83 of the image reading device A, and then the start of image reading may be notified to the external personal computer.

<Control during double feed>
During the transportation, the transport medium S is determined by the double feed detection sensor 40 for the presence or absence of double feed, and if it is determined that there is no double feed, the transport is continued. If it is determined that there is double feed, the transport is stopped, or the capture of the subsequent transport medium S by the first transport unit 10 is stopped, and the transport medium S in the double feed state is discharged as it is. It may be.

<Start reading according to the output of the resist sensor>
The control unit 80 starts reading an image of the transport medium S transported by the second transport unit 20 by the image reading unit 70 at a timing based on the detection result of the medium detection sensor 60, and first stores the read image. Then, it is sequentially sent to an external personal computer. The transport medium S from which the image has been read is discharged to the discharge tray 2 by the third transport unit 30, and the image reading process of the transport medium S is completed.

<Display panel configuration>
FIG. 3 is a front view of the discharge tray 2 of the image reading device A according to the embodiment of the present invention in an unfolded state. More precisely, it is a view seen from a direction perpendicular to the front panel 90 provided inclined to the front side of the image reading device A, and is viewed from slightly above the front in the state where the device is mounted. It is a diagram of the state.

A display panel 93 is provided on the front panel 90 at the upper part of the front surface, and an operation key group 122 as an example of the operation unit 83 is provided inside the display panel 93.

The operation key group 122 is provided with a start key, a stop key, and the like for starting the operation of the image reading device A, and a display unit 94 is provided so as to be adjacent to the operation key group 122.

<Paper discharge structure>
A discharge opening 92 is provided in the lower panel 91 at the lower part of the front surface, and the transport medium S transported by the third transport unit 30 is discharged.

FIG. 4 is a front view of the image reading device A according to the embodiment of the present invention in a state where the discharge tray 2 is housed.

The discharge tray 2 is pivotally supported via a first hinge 101 provided below the image reader A so as to be rotatable with respect to the image reader A, and is supported by the first discharge tray 2a on the front surface of the main body. It is configured to cover.

The first discharge tray 2a is rotatably attached to the main body 100 of the image reading device A with the first hinge 101 as a fulcrum. The first discharge tray 2a is formed to have the same size as the front panel 90, rotates with the first hinge 101 as a fulcrum in the stored state of the discharge tray 2 as shown in FIG. 4, and is folded so as to cover the front panel 90. Is done. In a state where the discharge tray 2 is folded toward the front panel 90, the discharge opening 92 is open so that the transported transport medium S can be discharged.

FIG. 5 is a top view of the discharge tray 2 of the image reading device A according to the embodiment of the present invention in an unfolded state.

The transport medium S transported by the third transport unit 30 is discharged to the first discharge tray 2a through the discharge opening 92, and depending on the size of the transport medium S, the first extension tray 2b drawn out from the first discharge tray 2a. , The second extension tray 2c and the third extension tray 2d are reached and guided.

The discharge position adjusting member 120 is rotatably provided on the third extension tray 2d, and is rotated in an upright state with respect to each extension tray drawn out according to the length of the transport medium S with respect to the transport direction. This makes it possible to adjust the position at which the transport medium S stops, make it difficult for the discharged transport medium S to be scattered, and improve the alignment.

<Details of Feeding Structure> FIG. 6 is a top view of the image reading device A according to the embodiment of the present invention in a state where the discharge tray 2 is housed.

The feed tray 110 is provided with a regulation member 111 slidably attached in a direction orthogonal to the transport direction according to the size of the transport medium S to be arranged. Further, in the center of the feeding tray 110, a feeding extension tray 112 that can be pulled out and used is provided.

<Details of Upper Unit> FIG. 7 is a schematic cross-sectional view of the image reading device A according to the embodiment of the present invention.

The main body 100 is composed of an upper unit 103 and a lower unit 104, and the upper unit 103 is rotatably attached to the lower unit 104 with the main body hinge 105 as a fulcrum. In this embodiment, the main body hinge 105 is provided coaxially with the first hinge 101, and has a common shaft member.

The center of gravity of the upper unit 103 in the unfolded state as shown in FIG. 8 is largely deviated to the front side in the transport direction as compared with the state in which the upper unit 103 is housed as shown in FIG.

Therefore, if there is momentum when the upper unit is deployed, the image reading device A may tip over. However, in the image reading device A according to the present embodiment, the upper unit 103 has the protruding portion 130. It is possible to prevent the image reading device A from tipping over even if the center of gravity shifts due to the expansion of the image reader A. The protrusion amount of the protrusion 130 is such that the protrusion 130 fits below the discharge tray 2 in the stored state of the upper unit 103 and the discharge tray 2 as shown in FIG. 7, and is a protrusion amount of the upper unit 103 as shown in FIG. In the unfolded state, the amount of protrusion is such that the main body 100 is located forward in the transport direction from the center of gravity. As a result, it is possible to prevent the image reading device A from tipping over due to the deployment of the upper unit 103, and to prevent the image reading device A from protruding more than necessary in the stored state in which the discharge tray 2 is stored so as not to disturb the user. In particular, by making the protruding amount of the protruding portion 130 extend to the front side in the transport direction from the center of gravity of the upper unit 103 in the deployed state of the upper unit 103 as shown in FIG. 8, the image reading device A can be more reliably performed. Can prevent the fall.

<Earth of the upper unit> FIG. 11 is a cross-sectional view of a main part of the image reading device A according to the embodiment of the present invention.

If the upper unit 103 is vigorously rotated when it is stored, a large impact may be applied when the upper unit 103 comes into contact with the lower unit 104 side, and a loud noise may be generated. In the image reading device A according to the present embodiment, metal upper elastic members 140 are provided on both sides of the separation roller 12 of the upper unit 103.

When the upper unit 103 is in the stored state, the upper elastic member 140 is elastically urged by the contact portion 141 provided on the lower unit 104 side and is in the stored state. The end of the upper elastic member 140 on the side attached to the upper unit 103 is electrically connected to the ground side of the electrical component provided in the upper unit 103, and the upper elastic member 140 comes into contact with the contact portion 141 to lower the lower part. It is conducted to the ground side of the electrical components arranged in the unit 104.

Therefore, in the stored state of the upper unit 103, the elastic member 140 that functions as a cushioning member can ground the upper unit 103 side.

<Earth of CIS Unit> FIG. 12 is a cross-sectional view of the image reading unit 70 of the image reading device A according to the embodiment of the present invention.

In the present embodiment, the image reading units 70 are arranged so as to face each other on both sides of the transport path RT, and are referred to as image reading units 70a and 70b in the following description, respectively. The image reading units 70a and 70b are sensor units having the same structure and are arranged on the target with the transport path RT in between.

The image reading unit 70a is provided with a contact image sensor (hereinafter, CIS) 71a and a color reference plate 72a inside.

By transmitting the driving force of the CIS sliding motor 73 arranged in the lower unit 104 via the transmission member 74 and the transmission member connecting portion 150 provided in the lower part of the image reading unit 70, the CIS 71a and the color reference plate 72a are , It is arranged so as to be slidable with respect to the transport direction. The background color can be switched by sliding the CIS71a and the color reference plate 72a.

When the background color of the scanned image is white, the CIS 71a is slid by the CIS sliding motor 73, and the scanning position is arranged at the position of the white reference plate 72b facing the white background to enable the white background scanning. At this time, since the CIS 71a and the white reference plate 72a move together, when the CIS 72a is arranged at the white background position, the white reference plate 72a is arranged at a position facing the reading position of the CIS 72b, and the image reading units 70a and 70b. Both can read a white background.

When the background color of the scanned image is black, the black background can be read by arranging the reading position of the CIS 71a at the position of the opposite black background portion 76b.

Reading of the black background is realized by diffusing the light emitted from the light emitting element in the CIS71a on the slope of the black background portion 76b and preventing the light from entering the light receiving element in the CIS71a.

The image reading unit 70b has the same structure as the image reading unit 70a, but the CIS 71b is fixed in the unit without being driven by the CIS sliding motor 73.

When the image reading unit 70a is inserted into the accommodating portion 77 of the lower unit 104, the image reading unit 70a is inserted while urging the metal lower elastic member 75 protruding from the lower unit 104 side, and is fitted and fixed at the accommodating completion position. Will be done.

The lower surface of the image reading unit 70a is covered with a metal member 76 (not shown), and is grounded with electrical components such as CIS71a. The image reading unit 70 is grounded to the lower unit 104 by being inserted while urging the lower elastic member 75 with the metal member 76.

Here, since the image reading unit 70 is urged upward by the lower elastic member 75, the image reading unit 70 is lifted upward simply by removing the fitting and fixing, and the image reading unit 70 can be easily removed. Maintainability can be improved.

The accommodating portion 77 of the lower unit 104 is formed by bending a metal plate material so as to form three surfaces facing the lower unit 104.

Although the embodiments of the present invention have been described in detail above, it is clear to those skilled in the art that various modifications can be made within the scope of the present invention.

<Adjustment of Discharge Tray Angle> Further, a tray support portion 131 is rotatably provided on the upper surface of the protrusion 130 so as to come into contact with the end surface on the tip side in the rotation direction when the discharge tray 2 is unfolded. There is.

As shown in the side view of FIG. 9, the discharge tray 2 is supported by the protrusion 130 in its unfolded state so as to be able to receive the discharged transport medium S.

FIG. 10 is another side view of the image reader A. The part surrounded by the circle DT1 in the upper figure is shown in the lower figure.

In a state where the tray support portion 131 is rotated toward the discharge port and protrudes from the protrusion 130 (second position), the protrusions 151 provided at both ends thereof are attached to the end faces of the discharge tray 2 and to the protrusion 130. When stored in the provided recess 155 (first position), the surface 131a facing the discharge opening 92 abuts on the lower portion of the discharge opening 92 to support the discharge tray 2. That is, the tray support portion 131 is sandwiched and held between the lower portion of the discharge opening 92 and the discharge tray 2 in a state where the tray support portion 131 is rotated so as to protrude from the protrusion 130. The tray support portion 131 is arranged in the protruding portion 130 provided at the lower part of the main body 100 so that its rotation shaft is on the upstream side in the transport direction of the protruding portion 130.

Further, in the present embodiment, when the tray support portion 131 is pulled out from the protrusion 130, the tray support portion 131 forms a part of the transport path and fills the gap between the discharge opening 92 and the discharge tray 2. It has become. The transport path forming surface 131b of the tray support portion 131 is located above the seat mounting surface 2e of the discharge tray 2 in the vertical direction.

Further, the structure in which the tray support portion 131 is pulled out from the protruding portion 130 by being rotated has been described, but the present invention is not limited to this, and for example, the tray support portion 131 may be configured to be pulled out linearly in the vertically upward direction from the protruding portion 130. good. Even in that case, the upper surface of the tray support portion 131 may be pulled out to a height sufficient to form a part of the transport path, and may be configured to come into contact with the discharge tray 2.

Further, when the tray support portion 131 is in the first position housed in the recess 155, the discharge tray 2 may abut only on the protrusion 130, or on both the protrusion 130 and the tray support 131. It may be made to abut. Further, the discharge tray 2 in contact with the tray support 131 in the first position is lifted vertically upward as compared with the discharge tray 2 in contact with the tray support 131 in the second position. If it is not provided, the discharge tray 2 may be in contact with only the tray support 131 even when the tray support 131 is in the first position. In this case, the discharge tray 2 only comes into contact with the tray support 131 regardless of whether the tray support 131 is in the first position or the second position.

FIG. 13 is a top view and an enlarged view thereof as viewed from a direction perpendicular to the front panel 90 of the image reading device A according to the embodiment of the present invention.

The tray support portion 131 is arranged so that the entire tray support portion 131 fits in the recess 155 provided in the protrusion 130. A recess 152 for finger hooking is provided in the center of the surface facing the rotation shaft (the surface on the downstream side in the transport direction in the state of FIG. 13). Further, a retracting portion 153 is provided at a position of the recess 155 facing the recess 152 of the tray support portion 131 so that the user's finger can easily touch the recess 152.

According to the present embodiment, when the discharge tray 2 is supported by the tray support portion 131 as shown in FIG. 10, the angle of the discharge tray 2 can be changed as compared with the state of FIG. 9 in which the discharge tray 2 is supported by the protrusion 130. That is, since the discharge tray 2 is supported on the upper side in the vertical direction, the angle formed by the installation surface of the image reading device A and the discharge tray can be increased.

As a result, in the state of FIG. 9, when the tip of the discharged transport medium S comes into contact with the rear end of the already discharged transport medium S and is pushed out, as shown in FIG. 10, the discharge tray 2 By changing the angle, in addition to the action of moving the rear end of the already discharged transport medium S toward the lower unit 104 side, the tip of the subsequent transport medium S is surely placed on the upper surface of the already discharged transport medium S. Can be landed.

However, if the discharge tray 2 is always lifted upward in the vertical direction as shown in FIG. 10, when a paper having a weak stiffness such as thin paper or a paper having a strong friction is conveyed, the conveying medium is used. Paper ejection defects such as S stopping in the middle of the ejection tray, the rear end of the paper remaining in the vicinity of the drive roller 31 and contacting the drive roller 31, and the ejected transport medium S curling up on the ejection tray 2 may occur. There is sex. Therefore, by adopting a configuration in which the angle of the discharge tray 2 can be changed depending on the type of the transport medium S, the alignment of the discharged transport media S on the discharge tray 2 can be remarkably improved.

Further, the tray support portion 131 comes into contact with the end face facing downward with the discharge tray 2 folded toward the front panel 90. By doing so, even if the surface of the discharge tray 2 is scratched due to friction with the tray support portion 131 or the like, the position is difficult for the user to see. Therefore, the discharge tray 2 is in a folded state (stored state). Does not spoil the aesthetics of.

Further, by providing the tray support portion 131 so that the entire portion is accommodated in the protrusion 130, the protrusion 130 and the discharge tray 2 are surely connected to each other when the tray support portion 131 is accommodated in the protrusion 130. Can be made to abut.

Further, by sandwiching the tray support portion between the discharge opening 92 and the discharge tray 2 while the tray support portion 131 is pulled out, the tray support portion 131 is pulled out from the protrusion portion 130 in the direction in which the tray support portion 131 is housed in the protrusion portion 130. Both rotations in the direction are restricted, and stable support of the discharge tray 2 is possible.

Further, with the tray support portion 131 pulled out, the tray support portion 131 fills the gap between the discharge opening 92 and the discharge tray 2 to form a transport path forming surface 131b on the upper surface of the tray support portion 131, thereby discharging. It is possible to prevent a paper ejection defect due to the sheet ejected to the opening 92 being sandwiched between the ejection opening 92 and the ejection tray 2, and it is possible to improve the paper ejection alignment. In the present embodiment, the transport path forming surface 131b is formed by a flat surface that is substantially parallel to the transport direction of the transport medium S discharged from the discharge opening 92, and further on the upstream side and the downstream side thereof. , Has an inclined surface so that the discharged transport medium S is not caught.

(Second Embodiment) The image reading apparatus according to the second embodiment of the present invention will be described with reference to FIG. In the following description, only the parts different from the first embodiment will be described, and the description of the first embodiment will be used for the other parts.

14 (A) and 14 (B) show enlarged views of the protruding portion 130 as viewed from the front. As shown in FIG. 14, the tray support portion 131 in the present embodiment has a knob portion 131c. The knob portion 131c is provided in the tray support portion storage hole 132 so as to be rotatable in the r direction in FIG. 14 (C) and 14 (D) are schematic views of the protruding portion 130 as viewed from the side. For the sake of explanation, only the protrusion 130 and the tray support 131 are shown.

As shown in FIGS. 14A and 14C, when the longitudinal direction of the knob portion 131c is rotated in the direction orthogonal to the transport direction D1 of the transport path RT, the knob portion 131c is formed in the tray support portion storage hole. It is designed so that it does not protrude from the inside of 132. In this state, the discharge tray 2 unfolded from the main body of the apparatus comes into contact with the protrusion 130 to position the discharge tray 2.

As shown in FIGS. 14B and 14D, when the longitudinal direction of the knob portion 131c rotates in a direction parallel to the transport direction D1 of the transport path RT, the knob portion 131c and the tray support portion storage hole The upper side protrudes from the inside of 132. In this state, the discharge tray 2 unfolded from the main body of the apparatus is lifted by abutting on the knob portion 131c, and the tip of the transport medium S discharged in the state of FIG. 14A is the transport medium that has already been discharged. In the case where it comes into contact with the rear end of S and is pushed out, by changing the angle of the discharge tray 2 as shown in FIG. In addition to the action of bringing the transport medium S closer to the surface, the tip of the subsequent transport medium S can be reliably landed on the upper surface of the transport medium S that has already been discharged.

If the tray support portion 131 is configured as in the present embodiment, the discharge tray 2 can be easily lifted to improve the alignment of the discharged transport medium S. Further, if the knob portion 131c is configured so that the discharge tray 2 can be supported even in a state other than the states shown in FIGS. 14 (A) and 14 (B), the support angle of the discharge tray 2 can be changed in FIGS. 14 (A) and 14 (B). ) Can be adjusted steplessly between the states.

A plurality of tray support portions 131 of the present embodiment can be provided in the width direction of the apparatus main body. In that case, the support angles of the output trays 2 can be aligned in the width direction by configuring the rotation angles of the plurality of tray support portions 131 to be changed in synchronization with the rotation of the other tray support portions.

(Third Embodiment) The image reading apparatus according to the third embodiment of the present invention will be described. In the following description, only the parts different from the first embodiment will be described, and the description of the first embodiment will be used for the other parts.

In the present embodiment, the first hinge 101 that rotatably fixes the discharge tray 2 to the apparatus main body has a plurality of steps, and the contact position can be changed, so that the fixing angle of the discharge tray 2 can be changed. It is configured to be adjustable. That is, by sliding the discharge tray 2 in the transport width direction of the transport medium S, the contact position of the first hinge 101 with respect to the plurality of steps is changed, and the angle formed by the discharge tray 2 with the mounting surface when deployed is adjusted. It will be possible. Here, although it has been explained that the first hinge 101 has a plurality of stepped portions, the first hinge 101 may have a tapered shape instead of the stepped portion, and the discharge tray 2 is slid and moved in the transport width direction (axial direction of the first hinge 101). It suffices if the contact position changes with and the support angle of the discharge tray 2 can be changed.

(Fourth Embodiment) The image reading apparatus according to the fourth embodiment of the present invention will be described. In the following description, only the parts different from the first embodiment will be described, and the description of the first embodiment will be used for the other parts.

In the present embodiment, the stopper member 201 is provided near the first hinge 101. The stopper member 201 is configured to be able to transition between two states, a regulated state and an unregulated state, and the two states can be transitioned by a driving means (not shown).

When the stopper member 201 is in the non-regulated state, the discharge tray 2 is rotated and deployed until it comes into contact with the protrusion 130, and can receive the discharged transport medium S. When the stopper member 201 is in the regulated state, the stopper member 201 comes into contact with any part of the discharge tray 2 to restrict its rotation, and the discharge tray 2 protrudes before coming into contact with the protrusion 130. It stops above the portion 130. With this configuration, by changing the angle of the discharge tray 2, in addition to the action of moving the rear end of the already discharged transport medium S toward the lower unit 104, the subsequent top surface of the already discharged transport medium S is followed. The tip of the transport medium S can be reliably landed.

In the present embodiment, the stopper member 201 contacts any position of the discharge tray 2 to regulate the rotation, so that the stopper member 201 is stopped before coming into contact with the protrusion 130 so that the transport medium S can be discharged. However, it is preferable that the stopper member 201 is brought into contact with the discharge tray 2 in the vicinity of the first hinge 101, and the stopper member 201 is brought into contact with the shaft portion of the first hinge 101 to regulate the rotation angle of the discharge tray 2. However, it is suitable.

Further, the gear teeth 101a may be provided on the first hinge portion 101, and the stopper member 201 may mesh with the gear teeth 101a to regulate the rotation angle of the discharge tray 2. In this case, by adjusting the drive timing of the motor that drives the stopper member 201, it is possible to adjust which tooth of the gear teeth 101a the stopper member 201 meshes with, and the discharge tray 2 is stopped at a desired angle. You may let it.

Regardless of each of the embodiments described above, the image reading device according to the present invention can be variously modified without departing from the gist of the present invention, and prevents the use of each of the above embodiments in combination. It's not a thing.

A Image reader S Transport medium 1 Mounting table 2 Discharge tray 2a 1st discharge tray 2b 1st extension tray 2c 2nd extension tray 2d 3rd extension tray 2e Sheet mounting surface 3 Drive unit 4 Drive unit 5 Transmission unit 10 1st Transport unit 11 Feed roller 12 Separation roller 20 Second transport unit 30 Third transport unit 70 Image reading unit 80 Control unit 90 Front panel 100 Main body 103 Upper unit 104 Lower unit 122 Operation key group 130 Projection 131 Tray support 131a Tray support Contact surface 131b Transport path forming surface 132 Tray support storage hole 151 Convex 152 Concave 153 Retract 155 Recess

Claims (5)

With the device body
The air supply port provided in the main body of the device and
A transport means for transporting the sheet fed from the feed port along the transport path, and
A discharge port for discharging the sheet from the apparatus main body, and a discharge port.
The sheet is received in a stored state in which the upper part of the discharge port is stored in the front surface of the device main body and a deployed state in which the sheet is deployed at a position below the discharge port and is discharged from the discharge port. A discharge tray that is rotatably mounted around a shaft provided at a position away from the surface,
It is provided with a tray support portion that is pulled out from the first position toward the second position that is the lower part of the discharge port.
The discharged tray in the unfolded state is located higher in the state where the tray support portion is in contact with the tray support portion in the second position than in the case where the tray support portion is in the first position.
A sheet transporting device characterized in that the tray support portion at the second position comes into contact with an end portion of the discharge tray that has been rotated from the stored state to the deployed state and is closer to the discharge port. The sheet transport device according to claim 1, wherein the tray support portion is rotatably provided with respect to the device main body. Wherein the tray support unit in a second position, the sheet conveying apparatus according to claim 1 or 2, characterized in that to form a part of the previous SL conveying path. Wherein said tray support portion in which the second in position, the surface forming part of the transport path, according to claim 3, characterized in that located above the sheet placing surface of the discharge tray Sheet transfer device. Claims 1 to 4 characterized in that the tray support portion rotates from the first position toward the discharge port, moves to the second position, and abuts on the lower portion of the discharge port. The sheet transport device according to any one of the above.

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