JP6730669B2 - Medium feeding device, image reading device, recording device - Google Patents

Description

The present invention relates to a medium feeding device that feeds a medium, and an image reading device and a recording device including the medium feeding device.

Hereinafter, in a scanner that is an example of an image reading device and a printer that is an example of a recording device, a feeding device that feeds a read document or recording paper is provided, and most of them are feeding rollers that feed a medium. And a separation roller (also referred to as a separation roller) that nips and separates the medium from the feeding roller.

Some of the separation rollers are provided in a state where a predetermined rotation resistance is applied, and some of the separation rollers are supplied with rotational power in a direction of returning the medium to the upstream side, as shown in Patent Document 1. As a result, it is possible to more reliably suppress the double feeding of the medium.

Japanese Patent No. 5287832

In the sheet material feeding device described in Patent Document 1, the separation roller (separation roller) is configured to generate a rotational torque by using the torsional bending force of the return spring without using a driving unit such as a motor. As a result, it is possible to obtain an appropriate double feed prevention effect while suppressing the complication of the structure and the cost increase.

However, the torsion spring has a drawback in that it is difficult to obtain a desired load due to the influence of friction between the coils and the load management is difficult, and as a result, even when it is applied to a separation roller, it is difficult to obtain a desired rotation torque.

Therefore, the present invention has been made in view of such a problem, and an object of the present invention is to provide a medium feeding device capable of more reliably obtaining an appropriate separation performance.

In order to solve the above problems, a medium feeding device according to a first aspect of the present invention includes a medium placing portion for placing a medium, a feeding roller for feeding the medium from the medium placing portion, and the feeding device. A separating mechanism that includes a separating roller that separates the medium by nipping the medium between the separating roller and the feeding roller, wherein the separating mechanism exerts a biasing force in a direction along a rotation axis direction of the separating roller. It is characterized in that it comprises: a biasing means and a converting means for converting at least a part of the biasing force of the biasing means into a biasing force for rotating the medium in a direction in which the separation roller returns the medium to the upstream side.

According to this aspect, the separating mechanism including the separating roller that separates the medium by nipping the medium with the feeding roller is the urging unit that exerts the urging force in the direction along the rotation axis direction of the separating roller. And a conversion means for converting at least a part of the urging force of the urging means into an urging force for rotating the medium in the direction in which the separation roller returns the medium to the upstream side. Therefore, a torsion spring is used as the urging means. There is no need, a desired load can be easily obtained, and proper separation performance can be obtained more reliably.

According to a second aspect of the present invention, in the first aspect, the conversion means is mounted so as to be displaceable along the rotation axis direction with respect to the rotation axis of the separation roller, and the urging means causes the rotation axis direction. A slider member that is urged to, and a cylindrical member that constitutes a part of the separation roller and that includes the slider member inside and that is rotatable relative to the slider member and that is displaceable in the rotation axis direction. A boss is provided on one side of the slider member and the cylindrical member, and a spiral groove into which the boss is loosely inserted is provided on the other side, and one of the boss and the spiral groove of the urging means is provided. It is characterized in that a structure is provided in which a rotating force is applied to the separation roller by pushing the other in the direction of the rotation axis by an urging force.

According to this aspect, the conversion means includes a boss provided on one side of the slider member and the cylindrical member, and a spiral groove provided on the other side in which the boss is loosely inserted. Since one of the spiral grooves is configured to apply a rotational force to the separation roller by pushing the other in the rotational axis direction by the biasing force of the biasing means, the converting means can have a simple structure and low cost. Can be configured to.

According to a third aspect of the present invention, in the first aspect, the conversion means is mounted so as to be spirally movable with respect to the rotation shaft of the separation roller, and is biased by the biasing means in the rotation axis direction of the rotation shaft. A slider member that is biased; and a cylindrical member that constitutes a part of the separation roller and that includes the slider member inside and that is displaceable in the rotation axis direction relative to the slider member. A boss is provided on one side of the shaft and the slider member, and a spiral groove into which the boss is loosely inserted is provided on the other side. One of the boss and the spiral groove is the other due to the urging force of the urging means. Is provided in the direction of the rotation axis so that a rotational force is applied to the separation roller.

According to this aspect, the conversion means includes a boss provided on one side of the rotary shaft and the slider member, and a spiral groove provided on the other side in which the boss is loosely inserted. Since one of the spiral grooves is configured to apply a rotational force to the separation roller by pushing the other in the rotational axis direction by the biasing force of the biasing means, the converting means can have a simple structure and low cost. Can be configured to.

According to a fourth aspect of the present invention, in the first aspect, the conversion means includes a spiral groove and a boss loosely inserted in the spiral groove, and one of the boss and the spiral groove is the urging member. It is characterized in that the biasing force of the means pushes the other in the direction of the rotation axis to impart a rotation force to the separation roller.

According to this aspect, the conversion means includes a spiral groove and a boss loosely inserted in the spiral groove, and one of the boss and the spiral groove rotates the other by the urging force of the urging means. Since the rotational force is applied to the separating roller by pushing in the axial direction, the converting means can be configured with a simple structure and at low cost.

A fifth aspect of the present invention is the fuel cell system according to any one of the second to fourth aspects, further comprising a torque limiter that permits idling of the separation roller when a rotational torque of a predetermined value or more is applied to the separation roller from the outside. It is characterized by

According to this aspect, since the torque limiter that allows idling of the separation roller when a rotation torque of a predetermined value or more is applied to the separation roller from the outside is provided, damage to the separation mechanism can be avoided.

A sixth aspect of the present invention is characterized in that, in any one of the first to fifth aspects, the urging means is a compression coil spring.
According to this aspect, since the urging means is a compression coil spring, load management is facilitated, and proper separation performance can be obtained more reliably.

A seventh aspect of the present invention is characterized in that, in any one of the first to sixth aspects, a regulating means for regulating the displacement of the separation roller in the rotation axis direction is provided.
According to this aspect, since the regulation unit that regulates the displacement of the separation roller in the rotation axis direction is provided, it is possible to suppress the displacement of the separation roller from the appropriate position, and thus maintain the proper feeding performance.

An image reading apparatus according to an eighth aspect of the present invention is a reading unit that reads a medium, and a medium feeding apparatus according to any one of the first to seventh aspects that feeds the medium to the reading unit side. , Is provided.

A recording apparatus according to a ninth aspect of the present invention is a recording means for recording on a medium, and a medium feeding apparatus according to any one of the first to seventh aspects for feeding the medium to the recording means side. And are provided.

According to the eighth aspect, in the image reading apparatus, and according to the ninth aspect, the same operational effect as in any one of the first to seventh aspects described above can be obtained in the recording apparatus. ..

FIG. 3 is a perspective view of a medium non-feeding state in the image reading apparatus according to the present invention. FIG. 3 is a perspective view showing a state in which the cover is opened and the discharge tray is expanded in the image reading apparatus according to the present invention. FIG. 3 is a side view showing a medium feeding path in the image reading apparatus according to the present invention. FIG. 3 is a perspective view showing a state in which the upper unit is rotated with respect to the lower unit in the image reading device. The perspective view which shows the outline|summary of the separation mechanism which concerns on a 1st Example. FIG. 3 is a side sectional view of the separation mechanism according to the first embodiment. FIG. 6 is a perspective view showing a slider member and a biasing means in the separation mechanism. The perspective view which shows the conversion means in a separation mechanism. The perspective view seen from the side which engages with a torque limiter in the separation mechanism concerning a 1st example. FIG. 3 is a perspective view showing a torque limiter in the separation mechanism according to the first embodiment. The side view which shows the 1st state of the separation means at the time of paper feeding. The side view which shows the 2nd state of the separation means at the time of paper feeding. FIG. 6 is a side view showing a state of a transport roller pair and a discharge roller pair when a thin sheet is fed in the sheet feeding path. FIG. 4 is a side view showing a state of a transport roller pair and a discharge roller pair when a thick sheet is fed in the sheet feeding path. The perspective view which shows the outline|summary of the separation mechanism which concerns on a 2nd Example. The sectional side view of the separation mechanism which concerns on a 2nd Example. The perspective view which shows the rotating shaft which concerns on a 2nd Example. The perspective view which shows the slider member and the rotating shaft which concern on 2nd Example. The perspective view which shows the slider member, the biasing means, and the rotating shaft which concern on a 2nd Example.

Embodiments of the present invention will be described below with reference to the drawings. The same components in each embodiment are designated by the same reference numerals, only the first embodiment will be described, and the description of the structure will be omitted in the following embodiments.

FIG. 1 is a perspective view of a non-feeding state of a medium in an image reading apparatus according to the present invention, and FIG. 2 is a perspective view showing a state in which a cover is opened and a discharge tray is expanded in the image reading apparatus according to the present invention. 3 is a side view showing a medium feeding path in the image reading apparatus according to the present invention, and FIG. 4 is a perspective view showing a state in which the upper unit is rotated with respect to the lower unit in the image reading apparatus. FIG. 5 is a perspective view showing the outline of the separation mechanism according to the first embodiment, and FIG. 6 is a side sectional view of the separation mechanism according to the first embodiment.

7 is a perspective view showing the slider member and the biasing means in the separation mechanism, FIG. 8 is a perspective view showing the conversion means in the separation mechanism, and FIG. 9 is a view showing the separation mechanism according to the first embodiment. FIG. 11 is a perspective view as seen from the side that engages with the torque limiter, FIG. 10 is a perspective view showing a torque limiter in the separation mechanism according to the first embodiment, and FIG. 11 is a first separation means during sheet feeding. 12 is a side view showing a second state of the separating means during sheet feeding, and FIG. 13 is a side view showing a state in which a thin sheet is fed in the sheet feeding path. It is a side view which shows the state of a roller pair and a discharge roller pair.

FIG. 14 is a side view showing a state of the transport roller pair and the discharge roller pair when a thick sheet is fed in the sheet feeding path, and FIG. 15 is an outline of the separating mechanism according to the second embodiment. 16 is a side sectional view of a separating mechanism according to a second embodiment, FIG. 17 is a perspective view showing a rotating shaft according to the second embodiment, and FIG. 18 is a second view. 19 is a perspective view showing a slider member and a rotating shaft according to the embodiment of FIG. 19, and FIG. 19 is a perspective view showing a slider member, a biasing means, and a rotating shaft according to the second embodiment.

In the XYZ coordinate system shown in each drawing, the X direction is the device width direction, the paper width direction, the Y direction is the paper conveyance direction in the image reading device, and the Z direction is the direction orthogonal to the Y direction. It shows a direction substantially orthogonal to the surface of the sheet to be conveyed. In each drawing, the −Y direction side is the front side of the device and the +Y direction side is the back side of the device.

■■■ First embodiment ■■■■
<<< About the image reading device>>>
Referring to FIGS. 1 and 2, a scanner 10 as an “image reading device” includes a lower unit 12, an upper unit 14, a cover unit 16, a paper discharge tray 18, and a paper feeding device 22 (described later). (See FIG. 5). In the present embodiment, the upper unit 14 is attached to the lower unit 12 so as to be rotatable with respect to the lower unit 12 with the downstream side in the sheet conveying direction as a rotation fulcrum (see FIG. 4).

Further, a cover portion 16 is rotatably attached to the lower unit 12 at the upper portion on the back side of the lower unit 12. The cover portion 16 includes a non-feeding state that covers the upper portion of the upper unit 14 and the feeding port 20 (see FIG. 2) as shown in FIG. 1, and a non-feeding state from FIG. The sheet can be rotated to the side to open the feeding port 20 and can be fed. Then, when the cover portion 16 is in a feedable state as shown in FIG. 2, the back surface of the cover portion 16 functions as a sheet mounting surface 16a of the sheet P as a “medium”.

A discharge port 24 for discharging the paper P is provided on the front side of the lower unit 12 in the apparatus. The lower unit 12 also includes a paper discharge tray 18 that can be pulled out from the discharge port 24 toward the front side of the apparatus. The paper discharge tray 18 can be in a state of being stored in the bottom portion of the lower unit 12 (see FIG. 1) or a state of being pulled out to the front side of the apparatus (see FIG. 2). Further, in the present embodiment, the paper discharge tray 18 is configured by connecting a plurality of tray members, and the drawing length from the discharge port 24 can be adjusted according to the length of the paper P to be discharged.

<Regarding the paper transport path in the scanner>
Next, the sheet feeding path 26 in the scanner 10 will be described mainly with reference to FIG. Further, in FIG. 3, the lower unit 12 and the upper unit 14 are shown by imaginary lines only for the outer contours of their casings. It should be noted that in FIG. 3, a thick solid line with a reference symbol P indicates a guide path of the sheet conveyed along the sheet feed path 26 in the scanner 10.

In the present embodiment, the paper P set in the feeding port 20 is placed on the back surface of the cover portion 16 which is in a posture of being rotated to the rear side of the apparatus with respect to the lower unit 12, that is, the paper loading as the “medium loading portion”. It is supported and placed by the placing surface 16a. A plurality of sheets P can be set in the feeding port 20.

Regarding the paper P placed on the paper placement surface 16a, the paper P placed at the bottom is fed to the downstream side in the feeding direction by the feeding roller 28 which is rotationally driven by a motor which is a drive source (not shown). Will be sent. The outer peripheral surface of the feeding roller 28 is made of a high-friction material (for example, an elastomer such as rubber). Further, as shown in FIG. 4, a plurality of feeding rollers 28 are provided at intervals in the device width direction (X direction). Specifically, in the lower unit 12, two feeding rollers 28 are provided at intervals in the device width direction.

Further, a separating roller 30 is provided at a position facing the feeding roller 28. In this embodiment, the outer peripheral surface of the separation roller 30 is made of a high friction material (e.g., elastomer such as rubber) like the feeding roller 28.

Note that, in FIG. 3, reference numeral G indicates a bundle of sheets P placed (set) on the sheet placement surface 16a. Before the start of feeding, the sheet bundle G is held at the feeding standby position (position in FIG. 3) by a stopper (not shown), and is moved between the feeding roller 28 and a separating roller 30 of a separating mechanism 32 described later. Are restricted from entering. Further, in this embodiment, the sheet placement surface 16a, the feeding roller 28, and the separating mechanism 32 constitute the sheet feeding device 22. The separating mechanism 32 will be described later in detail.

The sheet P nipped between the feeding roller 28 and the separation roller 30 is fed by the feeding roller 28 to the downstream side in the feeding direction in the sheet feeding path 26.

Subsequently, a double feed detection sensor 34 that detects double feed of the paper P is disposed downstream of the feeding roller 28 and the separation roller 30. In this embodiment, the double feed detection sensor 34 is configured as an ultrasonic sensor including a speaker unit and a microphone unit. Further, the double feed detection sensor 34 is configured to oscillate ultrasonic waves from the speaker section toward the sheet P passing through the sheet feeding path 26, and detect a reflected sound from the sheet P by the microphone section. In the present embodiment, the double feed detection sensor 34 is configured not only to detect the double feed of the paper P based on the frequency of the reflected sound, but also to detect the paper type such as thick paper.

Further, a conveyance roller pair 36 is provided downstream of the double feed detection sensor 34 in the paper feed path 26. The transport roller pair 36 includes a transport drive roller 36a and a transport driven roller 36b that is driven to rotate with respect to the transport drive roller 36a. In this embodiment, the transport drive roller 36a is rotationally driven by a drive source (not shown).

An image reading unit 38 as a “reading unit” is provided on the downstream side of the transport roller pair 36. Here, the image reading unit 38 is provided along the paper feeding path 26 and an upper reading unit 40 provided in the upper unit 14 so as to face the upper surface of the paper P conveyed along the paper feeding path 26. A lower reading unit 42 provided in the lower unit 12 is provided so as to face the lower surface of the conveyed paper P. In this embodiment, the upper reading unit 40 and the lower reading unit 42 are configured as a reading unit, for example, a contact image sensor module (CISM).

After the image on the at least one of the front surface and the back surface of the paper P is read by the image reading unit 38, the paper P is nipped by the discharge roller pair 44 located on the downstream side of the image reading unit 38 in the transport direction, and the discharge port is formed. It is discharged from 24.

Further, in this embodiment, the discharge roller pair 44 includes a discharge driving roller 44a and a discharge driven roller 44b that is driven to rotate with respect to the discharge driving roller 44a. In this embodiment, the discharge drive roller 44a is driven to rotate by a drive source (not shown). The transport drive roller 36a and the discharge drive roller 44a may be rotationally driven by a common drive source or may be separately rotationally driven by different drive sources.

Further, in the present embodiment, the control unit 46 is provided in the lower unit 12. In this embodiment, the control unit 46 is configured as an electric circuit including a plurality of electronic components. The control unit 46 controls a drive source that rotationally drives the upper reading unit 40, the lower reading unit 42, the feeding roller 28, the transport driving roller 36a, and the discharge driving roller 44a. Further, the control unit 46 receives the detection signal from the double feed detection sensor 34 and controls the conveyance of the paper P in the scanner 10.

Further, in the present embodiment, the control unit 46 is configured to control the conveyance of the paper P and the image reading operation in the scanner 10. Further, the control unit 46 may control an operation necessary for executing the document reading operation in the scanner 10 by an instruction from the outside (PC or the like).

<<< About separation mechanism>>>
Next, the separating mechanism 32 will be described with reference to FIGS. As shown in FIGS. 5 and 6, the separating mechanism 32 includes a separating roller 30, a biasing means 48, a converting means 50, a shaft 52 as a “rotating shaft of the separating roller”, and a torque limiter 54. There is. The conversion means 50 includes a slider member 56 (see FIG. 7) and a cylindrical member 58 (see FIG. 8). In this embodiment, two separating mechanisms 32 including the separating roller 30 are provided at intervals in the device width direction corresponding to the respective feeding rollers 28.

5 and 6, the frame member 14a of the upper unit 14 is provided with a pair of bearings 60A and 60B. Note that the frame member 14a of the upper unit 14 is simplified in FIG. The shaft 52 is inserted through the pair of bearings 60A and 60B. The shaft 52 is rotatably supported by the bearings 60A and 60B so as to be rotatable with respect to the bearings 60A and 60B.

Referring to FIG. 7, the shaft 52 is provided with a groove portion 52a extending in the axial direction. The slider member 56, the urging means 48, and the torque limiter 54 are inserted in the region of the shaft 52 between the portions pivotally supported by the bearings 60A and 60B.

The slider member 56 is formed in a cylindrical shape, and a convex portion 56a (see FIG. 6) that enters into the groove portion 52a of the shaft 52 is formed on the inner peripheral surface of the slider member 56. The convex portion 56a of the slider member 56 is guided by the groove portion 52a so that the slider member 56 can be slid in the rotation axis direction of the shaft 52 (the direction of the arrow in FIG. 7). Further, a boss 56b (see FIG. 7) protruding from the outer peripheral surface is formed on the outer peripheral surface of the slider member 56.

Further, in this embodiment, the urging means 48 passed through the shaft 52 is configured as a compression coil spring, for example. One end of the biasing means 48 (the end on the bearing 60B side in FIG. 7) is engaged with the slider member 56.

Further, in the present embodiment, the torque limiter 54 passed through the shaft 52 is configured as a known torque limiter as an example. In this embodiment, the torque limiter 54 includes an outer member 54a and an inner member 54b. The outer member 54a and the inner member 54b are relatively rotatable. In this embodiment, the inner member 54b of the torque limiter 54 engages with the bearing 60A and is fixed to the bearing 60A as shown in FIG. That is, the inner member 54b is fixed so as not to rotate in the direction around the rotation axis of the shaft 52.

In the present embodiment, the torque limiter 54 disconnects the torque transmission from the outer member 54a when the outer member 54a is rotated clockwise in FIG. Is configured. Further, in the present embodiment, an engaging protrusion 54c (see FIG. 10) protruding along the axial direction of the shaft 52 is formed at the end of the outer member 54a (the end on the bearing 60B side in FIG. 7).

Next, the cylindrical member 58 will be described with reference to FIG. In this embodiment, the slider member 56 and the urging means 48 are arranged in the cylindrical member 58. The shaft 52 passes through the cylindrical member 58. As shown in FIG. 8, a spiral groove 58 a extending in the axial direction of the shaft 52 is formed on the peripheral surface of the cylindrical member 58. In this embodiment, the spiral groove 58a penetrates the peripheral surface of the cylindrical member 58. The boss 56b of the slider member 56 is loosely inserted in the spiral groove 58a.

Further, referring to FIGS. 6 and 9, in the present embodiment, lid portions 58b are formed at both ends of the cylindrical member 58 in the axial direction. The lid portion 58b of the cylindrical member 58 on the bearing 60A side in FIG. 6 is engaged with the other end portion of the biasing means 48. In this embodiment, the biasing means 48 biases the slider member 56 toward the bearing 60B side along the axial direction of the shaft 52.

Further, referring to FIG. 9, a lid portion 58b of the cylindrical member 58 on the bearing 60A side is provided with an engaged hole 58c extending in the circumferential direction. In this embodiment, the engaging projection 54c of the torque limiter 54 is loosely inserted in the engaged hole 58c. That is, the engagement protrusion 54c is relatively displaceable within the engaged hole 58c extending in the circumferential direction. That is, the cylindrical member 58 has a play capable of being displaced in the circumferential direction with respect to the torque limiter 54. In the present embodiment, the engaged holes 58c are provided at two locations corresponding to the engaging protrusions 54c.

Then, when the engagement protrusion 54c of the torque limiter 54 is displaced to the circumferential end of the engaged hole 58c when the cylindrical member 58 is rotated, the outer member 54a of the torque limiter 54 moves in the same direction as the cylindrical member 58. It is configured to rotate.

Further, referring to FIGS. 5, 6 and 9, the separation roller 30 is mounted on the outer peripheral surface of the cylindrical member 58 so as to rotate together with the cylindrical member 58. That is, in this embodiment, the cylindrical member 58 constitutes a part of the separation roller 30.

Here, the operation of the conversion means 50 will be described with reference to FIGS. 7 and 8. In FIG. 8, when the cylindrical member 58 rotates in the arrow direction around the rotation axis of the shaft 52, the spiral groove 58a guides the boss 56b to displace the slider member 56 in the axial direction of the shaft 52, in this case, the bearing 60A side. .. That is, the slider member 56 is displaced toward the bearing 60A side against the biasing force of the biasing means 48. As a result, elastic energy of the compression coil spring is accumulated in the biasing means 48.

In this embodiment, since the biasing means 48 is configured as a compression coil spring as an example, load management becomes easier and a desired load is easily obtained, as compared with the case where the biasing means 48 is configured by a torsion spring. Appropriate separation performance can be surely obtained.

Further, in the present embodiment, the amount of movement of the slider member 56 in the axial direction of the shaft 52, that is, the distance by which the biasing means 48 is pressed and deformed is defined by the length of the spiral groove 58a. That is, by changing the length of the spiral groove 58a, the maximum urging force of the urging means 48 for urging the slider member 56 can be changed. As a result, the amount of rotation of the cylindrical member 58 and the separation roller 30 by the urging means 48 (the amount of rotation of the sheet P toward the upstream side in the feeding direction) can be changed.

Then, when the boss 56b moves along the spiral groove 58a to the end of the spiral groove 58a on the bearing 60A side, the movement of the slider member 56 toward the bearing 60A side in the axial direction of the shaft 52 of the slider member 56 is restricted. In this state, the slider member 56 rotates together with the shaft 52 in the same direction as the cylindrical member 58. That is, the state in which the slider member 56 resists the biasing force of the biasing means 48 is maintained.

Further, in the present embodiment, when the cylindrical member 58 rotates until the movement of the slider member 56 toward the bearing 60A side in the axial direction of the shaft 52 is restricted, the end portion of the engaged hole 58c in the circumferential direction and the torque limiter 54. Engages with the engaging projection 54c and eliminates the play between the cylindrical member 58 and the torque limiter 54. As a result, the cylindrical member 58 and the torque limiter 54 start rotating in the same direction. When torque exceeding a predetermined value is applied to the torque limiter 54, the torque transmission of the torque limiter 54 is cut off, that is, the cylindrical member 58 and thus the separation roller 30 are set to allow idle rotation.

Next, when the force for rotating the cylindrical member 58 in the direction of the arrow around the rotation axis of the shaft 52 in FIG. 8 disappears, the slider member 56 is moved in the axial direction of the shaft 52 by the slider member 56 due to the elastic energy accumulated in the biasing means 48. Is biased to the side. Then, the slider member 56 starts moving toward the bearing 60B side in the axial direction of the shaft 52. At this time, the boss 56b of the slider member 56 presses the spiral groove 58a to rotate the cylindrical member 58 in a direction opposite to the arrow direction around the rotation axis of the shaft 52 in FIG.

When the boss 56b moves along the spiral groove 58a to the end of the spiral groove 58a on the bearing 60B side, the movement of the slider member 56 toward the bearing 60B side in the axial direction of the shaft 52 is restricted.

That is, when the cylindrical member 58 is rotated in the direction of the arrow around the rotation axis of the shaft 52 in FIG. 8, the converting means 50 in this embodiment causes the slider member 56 to resist the urging force of the urging means 48 and the bearing 60A side. Move to. That is, the rotational force of the cylindrical member 58 is converted into a force that resists the biasing force of the biasing means 48. Then, in the biasing means 48, the force against the biasing force is converted into elastic energy and accumulated.

Next, when the force against the urging force of the urging means 48 ceases to act on the urging means 48, the urging means 48 urges the slider member 56 toward the bearing 60B. Then, the slider member 56 moves toward the bearing 60B side, and the slider member 56 presses the cylindrical member 58 toward the bearing 60B side, so that the cylindrical member 58 moves in the direction opposite to the arrow direction around the rotation axis of the shaft 52 in FIG. Rotate in the direction.

Further, in this embodiment, as shown in FIG. 6, a regulation means 62 for regulating the displacement of the separation roller 30 and the cylindrical member 58 in the axial direction of the shaft 52 is provided. In this embodiment, the restricting means 62 (see FIG. 6) is configured as a known snap ring fitted to the shaft 52, for example. Further, instead of the retaining ring, the regulation unit 62 may be configured to regulate, for example, a part of the frame member 14a of the upper unit 14 with respect to at least one of the separation roller 30 and the cylindrical member 58 in the axial displacement. Good.

<<<About the operation of the separation mechanism in the paper feeding state>>>
Here, with reference to FIGS. 11 and 12, the operation of the separation mechanism 32 when the sheet P is placed from the sheet placement surface 16a will be described. As shown in FIG. 11, when the feeding of the sheet P from the sheet mounting surface 16a is started, the control unit 46 starts the rotational driving of the feeding roller 28. In this embodiment, the feeding roller 28 rotates counterclockwise in FIG. Note that, in FIGS. 11 and 12, the sheet positioned at the lowest position with respect to the sheet mounting surface 16a is designated as P1, and the sheet positioned immediately above the sheet P1, that is, the sheet to be fed next to the sheet P1 is designated as P2. To do.

Since the feeding roller 28 and the separating roller 30 are in direct contact with each other in FIG. 11, the separating roller 30 is rotated in the clockwise direction in FIG. 11 by the rotational force of the feeding roller 28. Then, as the separating roller 30 rotates in the clockwise direction, the converting means 50 converts the rotational force of the separating roller 30 and stores it as the urging force of the urging means 48.

When the rotation torque received from the feeding roller 28 exceeds the limit torque of the torque limiter 54, the torque limiter 54 allows the separation roller 30 to idle, and the separation roller 30 rotates following the feeding roller 28 (see FIG. Clockwise at 11).

Next, referring to FIG. 12, when the sheet P1 is fed to the nip position between the feeding roller 28 and the separating roller 30, the separating roller 30 is no longer in direct contact with the feeding roller 28. That is, the rotational force of the feeding roller 28 cannot be received.

As a result, the pressing force of the slider member 56 on the biasing means 48 is released, and the biasing force of the biasing means 48 is released. More specifically, at least a part of the urging force of the urging means 48 in the axial direction of the shaft 52 by the conversion means 50 becomes a rotational force in the counterclockwise direction in FIG. To be converted. That is, the separation roller 30 is rotated in the direction of returning the sheet P to the upstream side by the urging force of the urging unit 48.

As a result, the separation roller 30 that rotates counterclockwise in FIG. 12 is positioned higher than the paper P1 that is about to enter the nip position between the feeding roller 28 and the separation roller 30 as the paper P1 is fed. The sheet to be processed, for example, the sheet P2 can be returned to the upstream side in the feeding direction. As a result, double feeding of the paper P can be suppressed.

<<<Regarding the configuration of the transport roller pair and the discharge roller pair>>>
Next, the configurations of the transport roller pair 36 and the discharge roller pair 44 in this embodiment will be described with reference to FIGS. 13 and 14. As shown in FIG. 13, a transport roller pair 36 is arranged upstream of the image reading unit 38 in the feeding direction, and a discharge roller pair 44 is arranged downstream of the image reading unit 38 in the feeding direction.

In this embodiment, the transport roller pair 36 includes a transport drive roller 36a and a transport driven roller 36b that is driven to rotate with respect to the transport drive roller 36a. In this embodiment, the transport driven roller 36b is configured to be displaceable in a direction in which the transport driven roller 36a comes in contact with and separates from the transport drive roller 36a. Specifically, the transport driven roller 36b includes a rotating shaft 64. In this embodiment, both ends of the rotary shaft 64 in the axial direction are loosely inserted in the guide grooves 66.

In this embodiment, the guide groove 66 extends obliquely toward the upstream side in the feeding direction and the upper side in the device height direction. The rotation shaft 64 of the transport driven roller 36b is displaceable along the guide groove 66 in a direction in which the rotary shaft 64 comes in contact with and separates from the transport drive roller 36a.

On the other hand, the discharge roller pair 44 includes a discharge drive roller 44a and a discharge driven roller 44b that is driven to rotate with respect to the discharge drive roller 44a. In this embodiment, the discharge driven roller 44b is configured to be displaceable in a direction in which the discharge driven roller 44a comes into contact with and separates from the discharge driving roller 44a. Specifically, the discharge driven roller 44b includes a rotating shaft 68. In this embodiment, both ends of the rotary shaft 68 in the axial direction are loosely inserted in the guide grooves 70.

In this embodiment, the guide groove 70 extends obliquely toward the downstream side in the feeding direction and the upper side in the device height direction. The rotation shaft 68 of the discharge driven roller 44b is displaceable along the guide groove 70 in the direction in which the discharge driven roller 44a comes in contact with and separates from the discharge driving roller 44a.

As shown in FIG. 13, a solid line with a reference symbol P3 indicates a thin sheet fed along the sheet feeding path 26. When the thin paper P3 is fed along the paper feed path 26, the thin paper P3 is nipped by the pair of transport rollers 36 and is fed to the image reading unit 38.

Here, the straight line S1 shown in FIG. 13 indicates that when the position of the rotation center of the transport drive roller 36a in the sheet feeding direction and the position of the rotation center of the transport driven roller 36b are at the same position, It is a straight line connecting the rotation center, the rotation center of the transport driven roller 36b and the nip point between the transport drive roller 36a and the transport driven roller 36b.

The straight line S2 connects the rotation center of the transport drive roller 36a, the rotation center of the transport driven roller 36b, and the nip point between the transport drive roller 36a and the transport driven roller 36b in the paper feeding direction when transporting the thin paper P3. It is a straight line. In this embodiment, the straight line S2 is inclined with respect to the straight line S1 on the downstream side in the feeding direction by the angle α. That is, the nip point between the transport driving roller 36a and the transport driven roller 36b on the straight line S2 is shifted to the downstream side in the feeding direction from the nip point on the straight line S1. As a result, the pair of transport rollers 36 feeds the thin paper P3 downstream in the transport direction so that the thin paper P3 is pressed against the reading surface of the lower reading unit 42 of the image reading unit 38.

Here, the discharge roller pair 44 provided on the downstream side of the image reading unit 38 in the feeding direction is also configured similarly to the transport roller pair 36. More specifically, the straight line S3 is the rotation of the discharge drive roller 44a when the position of the rotation center of the discharge drive roller 44a and the position of the rotation center of the discharge driven roller 44b in the paper feeding direction are the same position. It is a straight line connecting the center, the rotation center of the discharge driven roller 44b, and the nip point between the discharge drive roller 44a and the discharge driven roller 44b.

The straight line S4 connects the rotation center of the discharge driving roller 44a, the rotation center of the discharge driven roller 44b, and the nip point between the discharge driving roller 44a and the discharge driven roller 44b in the paper feeding direction when the thin paper P3 is conveyed. It is a straight line. In the present embodiment, the straight line S4 is inclined with respect to the straight line S3 on the upstream side in the feeding direction by the angle β. That is, the nip point between the discharge driving roller 44a and the discharge driven roller 44b on the straight line S4 is displaced upstream of the nip point on the straight line S3 in the feeding direction. The angle α and the angle β may be different angles or the same angle.

Then, the paper P3 pressed against the reading surface of the lower reading unit 42 of the image reading unit 38 is nipped by the discharge roller pair 44 and discharged from the discharge port 24. Here, by shifting the nip position of the discharge roller pair 44 to the upstream side in the feeding direction, even if the trailing edge of the paper P3 sent out by the transport roller pair 36 passes through the nip position of the transport roller pair 36, the paper P3 remains The posture pressed against the reading surface of the lower reading unit 42 can be maintained. As a result, it is possible to stabilize the conveyance posture of the image reading unit 38 on the thin paper P3, and it is possible to suppress deterioration of the image reading quality on the paper P3.

Further, with reference to FIG. 14, a case where a thick sheet P4 is fed to the image reading unit 38 along the sheet feeding path 26 will be described. As shown in FIG. 14, when the paper P4 is passed between the transport drive roller 36a and the transport driven roller 36b, the rotary shaft 64 of the transport driven roller 36b is guided by the guide groove 66 according to the thickness of the paper P4. It is displaced upstream in the feeding direction.

As a result, the transport driven roller 36b is separated from the transport drive roller 36a by the thickness of the sheet P4. That is, the nip position between the transport driving roller 36a and the transport driven roller 36b moves from the state in which the nip position is shifted to the downstream side in the feeding direction to the upstream side in the feeding direction. In FIG. 14, the position where the angle α is zero, that is, the nip point between the transport driving roller 36a and the transport driven roller 36b in the sheet feeding direction is located on the straight line S1.

As a result, the thick paper P4 is sent to the image reading unit 38 by the transport roller pair 36 while maintaining the attitude in which the paper P4 is sent, not in the direction in which it is pressed against the reading surface of the lower reading unit 42. To be

Similarly, in the pair of discharge rollers 44, when the sheet P4 is fed, the rotation shaft 68 of the discharge driven roller 44b is guided by the guide groove 70 and displaced downstream in the sheet feeding direction according to the sheet thickness of the sheet P4. To do. As a result, the discharge driven roller 44b is separated from the discharge drive roller 44a by the thickness of the sheet P4.

That is, the nip position between the discharge driving roller 44a and the discharge driven roller 44b moves from the state in which the nip position is shifted to the upstream side in the feeding direction to the downstream side in the feeding direction. In FIG. 14, the position where the angle β is zero, that is, the nip point between the discharge driving roller 44a and the discharge driven roller 44b in the sheet feeding direction is located on the straight line S3. As a result, the discharge roller pair 44 can feed the sheet P4 to the downstream side in the feeding direction while maintaining the posture in which the sheet P4 is fed from the transport roller pair 36. That is, the sheet P4 can be fed without bending the sheet P4 in the path from the transport roller pair 36 to the discharge roller pair 44 via the image reading unit 38.

Here, since the thick paper P4 has high rigidity, when it is bent so as to be pressed against the reading surface of the lower reading unit 42 like the thin paper P3, it is hooked on the transport roller pair 36 and the discharge roller pair 44. The load increases. However, in the present embodiment, the thick paper P4 is not bent, or even if it is bent, the paper P4 is conveyed along the paper feeding path 26 so that the degree of bending is small. The load on the discharge roller pair 44, that is, the load on the scanner 10 can be reduced. That is, the transport roller pair 36 and the discharge roller pair 44 can optimally control the feeding posture of the paper P in the image reading unit 38 according to the thickness of the paper P.

Further, since it is possible to suppress the load applied to the transport roller pair 36 and the discharge roller pair 44 when feeding the thick paper P4, it is possible to reduce the size of the drive source that drives these rollers and reduce the cost. it can. Further, it is possible to suppress noise in the scanner 10 and reduce the size of the device.

■■■ Second embodiment ■■■■
Next, a second embodiment of the separating mechanism will be described with reference to FIGS. The separation mechanism 72 according to the second embodiment differs from the separation mechanism 72 according to the first embodiment in that the configuration of the conversion means 74 is different. Other than that, the configuration is the same as that of the first embodiment, and the description thereof is omitted. Although the torque limiter 54 is not shown in the present embodiment, the torque limiter 54 is arranged on the +X axis direction side of the cylindrical member 80 in FIG.

Referring to FIGS. 15 and 16, the separation mechanism 72 includes the separation roller 30, a conversion unit 74, a biasing unit 48, and a shaft 76. The conversion means 74 includes a slider member 78 and a cylindrical member 80. The separation roller 30 is not shown in FIGS. 15 and 16. Further, also in the present embodiment, the biasing means 48 is configured as a compression coil spring as an example.

With reference to FIG. 17, the shaft 76 is formed with a spiral groove 76 a extending along the axial direction of the shaft 76. Then, as shown in FIG. 18, the shaft 76 is passed through a slider member 78. A boss 78a is formed on the inner peripheral surface of the slider member 78. The boss 78a is loosely inserted in the spiral groove 76a of the shaft 76. That is, when the boss 78a moves along the spiral groove 76a, the slider member 78 moves in the axial direction of the shaft 76 while rotating around the rotation axis of the shaft 76.

Further, on the outer peripheral surface of the slider member 78, a convex portion 78b protruding from the outer peripheral surface is formed. In this embodiment, two protrusions 78b are provided on the outer peripheral surface of the slider member 78. The shaft 76 is passed through the biasing means 48. Further, one end of the biasing means 48 (the end on the −X axis direction side in FIG. 19) is engaged with the end of the slider member 78 (end on the +X axis direction side in FIG. 19).

Referring again to FIGS. 15 and 16, the slider member 78 and the biasing means 48 are arranged in the cylindrical member 80. The shaft 76 penetrates the cylindrical member 80. The other end of the biasing means 48 (+X axis direction side end in FIG. 16) is engaged with the axial end of the cylindrical member 80 (+X axis direction side end in FIG. 16).

Further, as shown in FIG. 15, a groove portion 80 a extending in the axial direction of the shaft 76 is formed on the peripheral surface of the cylindrical member 80. In the present embodiment, the groove portion 80a is provided at two places corresponding to the convex portion 78b of the slider member 78. Then, the convex portion 78b is loosely inserted in the groove portion 80a. In the present embodiment, although not shown, the separation roller 30 is mounted on the outer peripheral surface of the cylindrical member 80 so as to rotate together with the cylindrical member 80. The cylindrical member 80 constitutes a part of the separation roller 30 in this embodiment.

Further, as shown in FIG. 16, two engaged holes 80b that engage with the engaging protrusions 54c of the torque limiter 54 are provided at the end of the cylindrical member 80 on the +X axis direction side.

In FIG. 15, when the cylindrical member 80 rotates in the direction of the arrow around the rotation axis of the shaft 76, the protrusion 78b of the slider member 78 is pressed by the groove 80a in the direction of the arrow. As a result, the slider member 78 moves to the +X axis direction side in the axial direction of the shaft 76 in FIG. 15 while the boss 78a rotates along the spiral groove 76a. At this time, the convex portion 78b of the slider member 78 also moves in the groove portion 80a toward the +X axis direction side in the axial direction of the shaft 76. As a result, the biasing means 48 is pressed by the slider member 78 and stores elastic energy.

Next, when the pressing force of the slider member 78 on the biasing means 48 disappears, the biasing means 48 biases the slider member 78 toward the −X axis direction side in FIG. As a result, the slider member 78 moves to the −X axis direction side in the axial direction of the shaft 76 in FIG. 15 while the boss 78a rotates along the spiral groove 76a. Along with the rotation of the slider member 78, the convex portion 78b presses the groove portion 80a in the direction opposite to the arrow direction around the rotation axis of the shaft 76 in FIG. 15 to rotate the cylindrical member 80 in the direction opposite to the arrow. That is, the conversion unit 74 rotates the separation roller 30 in the direction of returning the paper P to the upstream side in the feeding direction. As a result, double feeding of the paper P can be suppressed.

Therefore, in the present embodiment, the separating mechanism 72 can convert at least a part of the urging force of the urging means 48 into the rotational force for rotating the separating roller 30 by the converting means 74.

<<<<Modifications of First and Second Embodiments>>>>
(1) In each of the embodiments, the separating roller 30, that is, the separating mechanisms 32 and 72 are provided at two locations in the device width direction corresponding to the number of the feeding rollers 28. However, instead of this configuration, the feeding rollers The combination of 28 and the separating mechanisms 32 and 72 may be provided in one set or in three or more sets in the device width direction.
(2) In each of the embodiments, the sheet feeding device 22 including the separating mechanisms 32 and 72 is applied to the scanner 10 as an image reading device, but instead of this configuration, ink is ejected toward the sheet. It may be applied to a recording device provided with a recording head as a recording means, such as an inkjet printer.

To summarize the above description, the sheet feeding device 22 includes a sheet placing surface 16a on which the sheet P is placed, a feeding roller 28 that feeds the sheet P from the sheet placing surface 16a, and a feeding roller 28. Separation mechanisms 32 and 72 including a separation roller 30 that separates the paper by nipping the paper, and the separation mechanisms 32 and 72 exert a biasing force in a direction along the rotation axis direction of the separation roller 30. The urging means 48 and the converting means 50, 74 for converting at least a part of the urging force of the urging means 48 into an urging force for rotating the separation roller 30 in a direction of returning the sheet P to the upstream side.

According to the above configuration, the separating mechanisms 32 and 72 including the separating roller 30 that separates the sheet P by nipping the sheet P with the feeding roller 28 are arranged in the direction along the rotation axis direction of the separating roller 30. An urging unit 48 that exerts an urging force, and conversion units 50 and 74 that convert at least a part of the urging force of the urging unit 48 into an urging force that rotates the separation roller 30 in a direction of returning the paper P to the upstream side. Therefore, it is not necessary to use a torsion spring as the urging means 48, a desired load can be easily obtained, and proper separation performance can be obtained more reliably.

The conversion means 50 is mounted so as to be displaceable along the rotation axis direction with respect to the shaft 52, which is the rotation axis of the separation roller 30, and is biased in the rotation axis direction by the biasing means 48, and the separation roller. One of the slider member 56 and the cylindrical member 58, which constitutes a part of the slider member 30 and includes a slider member 56 inside and a cylindrical member 58 that is rotatable and displaceable relative to the slider member 56 in the rotational axis direction. A boss 56b is provided on one side, and a spiral groove 58a on which the boss 56b is loosely inserted is provided on the other side. One of the boss 56b and the spiral groove 58a is moved in the rotational axis direction by the urging force of the urging means 48. The separating roller 30 is provided with a rotational force when pushed. According to this configuration, the converting means 50 can be configured at a low cost with a simple structure.

The conversion means 74 is attached to the shaft 76, which is the rotation axis of the separation roller 30, so as to be capable of spiral movement, and is biased by the biasing means 48 in the direction of the rotation axis of the shaft 76, and the separation roller 30. A cylindrical member 80, which is a part of the cylindrical member 80, is provided inside the slider member 78 and is displaceable in the rotational axis direction relative to the slider member 78, and the shaft 76 and the slider member 78 are provided on one side with a boss 78a. Is provided, and a spiral groove 76a in which the boss 78a is loosely inserted is provided on the other side, and one of the boss 78a and the spiral groove 76a pushes the other in the rotation axis direction by the urging force of the urging means 48, thereby separating roller. 30 is provided with a rotational force. According to this configuration, the converting means 74 can be configured with a simple structure and at low cost.

The conversion means 50, 74 includes spiral grooves 58a, 76a and bosses 56b, 78a that are loosely inserted in the spiral grooves 58a, 76a. By pushing the other side in the direction of the rotation axis by the urging force of the separation roller 30, a rotation force is applied to the separation roller 30. According to this configuration, the converting means 50, 74 can be configured at a low cost with a simple structure.

The separation mechanisms 32 and 72 include a torque limiter 54 that allows the separation roller 30 to rotate idly when a rotation torque of a predetermined value or more is applied to the separation roller 30 from the outside. With this configuration, breakage of the separating mechanisms 32 and 72 can be avoided.

The biasing means 48 is a compression coil spring. According to this configuration, load management becomes easy, and proper separation performance can be obtained more reliably.

Furthermore, the separation mechanisms 32 and 72 include a restriction unit 62 that restricts the displacement of the shafts 52 and 76 of the separation roller 30 in the rotation axis direction. With this configuration, it is possible to suppress the displacement of the separation roller 30 from an appropriate position, and thus to maintain an appropriate feeding performance.

The scanner 10 includes an image reading unit 38 that reads a medium, and a paper feeding device 22 that feeds the paper P to the image reading unit 38 side.

The recording apparatus includes a recording head that records on a medium, and a sheet feeding device 22 that feeds the sheet P to the recording head side.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

DESCRIPTION OF SYMBOLS 10... Scanner, 12... Lower unit, 14... Upper unit, 14a... Frame member, 16... Cover part, 16a... Paper mounting surface, 18... Paper ejection tray, 20... Feed port, 22... Paper feeding device, 24... Ejection port, 26... Paper feeding path, 28... Feeding roller, 30... Separation roller, 32, 72... Separation mechanism, 34... Double feed detection sensor, 36... Conveying roller pair, 36a... Conveying driving roller, 36b ... Transport driven roller, 38... Image reading unit, 40... Upper reading unit, 42... Lower reading unit, 44... Ejection roller pair, 44a... Ejection drive roller, 44b... Ejection driven roller, 46... Control unit, 48... Energizing Means, 50, 74... Conversion means, 52, 76... Shaft, 52a, 80a... Groove portion, 54... Torque limiter, 54a... Outer member, 54b... Inner member, 54c... Engaging protrusion, 56, 78... Slider member, 56a , 78b... convex portion, 56b, 78a... boss, 58, 80... cylindrical member, 58a, 76a... spiral groove, 58b... lid portion, 58c, 80b... engaged hole, 60A, 60B... bearing, 62... regulating means , 64, 68... Rotating shafts, 66, 70... Guide grooves, G... Sheet bundle, P, P1, P2, P3, P4... Sheet, α, β... Angle

Claims (8)

A medium mounting portion for mounting a medium,
A feeding roller that feeds the medium from the medium mounting portion,
A separating mechanism including a separating roller that separates the medium by nipping the medium with the feeding roller;
The separation mechanism, a biasing means for exerting a biasing force in a direction along the rotation axis direction of the separation roller,
At least a part of the urging force of the urging means, a conversion means for converting the separation roller into an urging force for rotating the medium in a direction to return the medium to the upstream side,
The conversion means is mounted so as to be displaceable along the rotation axis direction with respect to the rotation axis of the separation roller, and is a slider member biased in the rotation axis direction by the biasing means,
Comprising a part of the separation roller, including the slider member inside and a cylindrical member that is rotatable relative to the slider member and displaceable in the rotation axis direction,
A boss is provided on one side of the slider member and the cylindrical member, and a spiral groove into which the boss is loosely inserted is provided on the other side,
One of the boss and the spiral groove is configured to apply a rotational force to the separation roller by pushing the other in the rotation axis direction by the urging force of the urging means.
A medium feeding device characterized by the above. A medium mounting portion for mounting a medium,
A feeding roller that feeds the medium from the medium mounting portion,
A separating mechanism including a separating roller that separates the medium by nipping the medium with the feeding roller;
The separation mechanism, a biasing means for exerting a biasing force in a direction along the rotation axis direction of the separation roller,
At least a part of the urging force of the urging means, a conversion means for converting the separation roller into an urging force for rotating the medium in a direction to return the medium to the upstream side,
The conversion means is mounted on the rotation shaft of the separation roller so as to be spirally movable, and is biased by the biasing means in the direction of the rotation axis of the rotation shaft;
Comprising a part of the separation roller, comprising a slider member inside and a cylindrical member displaceable in the rotation axis direction relative to the slider member,
A boss is provided on one side of the rotary shaft and the slider member, and a spiral groove into which the boss is loosely inserted is provided on the other side.
One of the boss and the spiral groove is configured to apply a rotational force to the separation roller by pushing the other in the rotation axis direction by the urging force of the urging means.
A medium feeding device characterized by the above. The medium feeding device according to claim 1 or 2 , wherein the converting means includes a spiral groove and a boss loosely inserted into the spiral groove,
One of the boss and the spiral groove is configured to apply a rotational force to the separation roller by pushing the other in the rotation axis direction by the urging force of the urging means.
A medium feeding device characterized by the above. The medium feeding device according to any one of claims 1 to 3 , further comprising a torque limiter that permits idling of the separation roller when a rotation torque of a predetermined value or more is applied to the separation roller from the outside. ,
A medium feeding device characterized by the above. The medium feeding device according to any one of claims 1 to 4 , wherein the urging means is a compression coil spring.
A medium feeding device characterized by the above. The medium feeding device according to any one of claims 1 to 5 , further comprising a regulation unit that regulates displacement of the separation roller in a rotation axis direction.
A medium feeding device characterized by the above. Reading means for reading the medium,
The medium feeding device according to any one of claims 1 to 6 , which feeds a medium to the side of the reading unit,
Image reading device equipped with. Recording means for recording on the medium,
The medium feeding device according to any one of claims 1 to 6 , which feeds a medium to the recording unit side.
Recording device equipped with.

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