JP6746381B2 - Sheet feeding apparatus, reading apparatus including the same, and image forming apparatus - Google Patents

Description

The present invention relates to a sheet feeding apparatus that feeds a sheet placed on a placing section, a reading apparatus including the sheet feeding apparatus, and an image forming apparatus.

In a document feeding/reading device for feeding and reading a document, a document placed on a document tray is fed by a pickup roller, which is a feeding rotating member, and is separated and fed one by one by a separating unit. After the image is read in, it is discharged onto the discharge tray. In such a document feeding/reading apparatus, it is general that the feeding unit can be opened/closed so that a jammed document can be removed when a document feeding failure occurs during feeding.

That is, a cover that can be opened and closed is provided for the document feeding/reading device main body, and one of a pair of rollers that conveys a document is provided in the device main body and the other roller is provided in the opening/closing cover, and a roller is provided between the pair of rollers. When a document is jammed, the opening/closing cover is opened to open the pair of rollers to remove the jammed document (Patent Document 1).

Patent No. 5386570

In the document feeding/reading device, the pickup roller is provided on the opening/closing cover. Therefore, the drive of the pickup roller is transmitted from the motor provided in the apparatus main body through the gear train.

However, since the pickup roller is provided on the cover that can be opened and closed with respect to the apparatus main body as described above, the gear train for transmitting the drive thereto is provided on the side of the open/close cover when the open/close cover is opened. The gear (cover side gear) and the gear (main body side gear) provided on the apparatus main body side are separated from each other. Therefore, it is not possible to fix the gear shafts of the main body side gear and the cover side gear, and if the gap between the gears changes due to bending of the opening/closing cover, it becomes difficult to perform drive transmission accurately.

In view of the above problems, the present invention aims to accurately transmit a driving force.

A typical configuration according to the present invention for achieving the above object is a rotating body that conveys a sheet, a motor that generates a driving force that drives the rotating body, and an opening/closing mechanism for a device body provided with the motor. An opening/closing member that is capable of opening a conveyance path that guides the sheet, the opening/closing member including the rotating body, and a first gear that is provided in the apparatus body and transmits the driving force of the motor, A second gear provided on the opening/closing member, which meshes with the first gear when the opening/closing member is closed to transmit the driving force from the first gear to the rotating body. A second gear, which is separated from the first gear in the opened state, and a holding portion that holds the rotation shaft of the second gear are provided, and the rotation of the second gear is adjusted by adjusting the position of the holding portion. It has an adjusting member for adjusting the position of the moving shaft and a locking portion that is rotatably provided on the opening/closing member and that locks with a locked portion provided on the apparatus main body when the opening/closing member is closed. The holding portion is rotatably provided on the same axis as the rotation center of the locking portion .

According to the present invention, the driving force can be accurately transmitted.

FIG. 3 is a schematic cross-sectional view of a document reading device. FIG. 4 is a cross-sectional view of a document feeding standby state. FIG. 3 is a cross-sectional view of a document feeding state. FIG. 6 is an operation explanatory view of a shutter member. It is a perspective explanatory view of a drive transmission means. It is a schematic diagram of a drive transmission means. It is a control block diagram. It is a perspective view of the inside of an opening-and-closing cover. It is a section explanatory view in the state where an open-close cover was closed. It is a section explanatory view in the state where an open/close cover was opened. FIG. 7 is a perspective explanatory view of a gear held by an adjustment plate provided on the opening/closing cover and a gear provided on the main body. It is explanatory drawing which shows the state in which the shaft of the gear hold|maintained at the adjustment plate fits in a U-shaped groove part. It is a perspective explanatory view of a configuration in which a spring biases an adjustment plate.

[First Embodiment]
Next, a sheet feeding device according to an embodiment of the present invention will be described together with a reading device including the same.

<Reading device>
FIG. 1 is a schematic cross-sectional explanatory view of a document reading apparatus A according to the first embodiment. The configuration of the reading device A will be described together with the document reading operation. A plurality of documents are set on the loading unit 1 on which sheet-like documents are stacked and placed, and the sheets are separated and fed one by one by a sheet feeding device B described later. To send. When the fed original passes through the first platen 103 by the pair of conveying rollers 100, 101, 102, the first reading unit 104 optically reads the information written on one surface of the original.

After that, the document is conveyed by the conveyance roller pair 105, the information written on the other surface is optically read by the second reading unit 107 when passing over the second platen 106, and the discharge unit 109 discharges it by the discharge roller pair 108. Is discharged to.

<Sheet feeding device>
In the sheet feeding apparatus, as shown in FIG. 1, a regulating member 2 that is slidable in the document width direction (direction orthogonal to the feeding direction) is arranged on a placing portion 1 on which documents (sheets) D are stacked and placed. ing. The regulation member 2 regulates the width direction of the document D placed on the placing section 1 so that the document can be fed at the same position in the width direction when the document is fed.

Further, the placement unit 1 is provided with a document placement detection sensor (not shown) that detects when the document D is placed on the placement unit 1. In the present embodiment, this document placement detection sensor is configured to detect whether or not there is a document on the placement section 1 by detecting the position of a sensor lever that rotates depending on the presence or absence of a document by a photo interrupter. Other known sensor configurations may be used.

(Pickup roller)
On the downstream side of the document feeding direction of the placing unit 1, there is provided a pickup roller 3 which is a feeding rotating body that applies a feeding force to the sheet placed on the placing unit. As shown in FIG. 2, the pickup roller 3 is rotatably attached to one end of the support arm 4.

The support arm 4 is a support member that movably supports the pickup roller 3 between the feeding position and the standby position, and the other end portion opposite to the end portion to which the pickup roller 3 is attached is attached to the drive shaft 5 to drive the drive shaft 5. It is swingable around the shaft 5. When the document is not fed, the pickup roller 3 moves upward from the placing unit 1 and stands by, as shown in FIG. When the document is set on the placing portion 1 and the feeding signal is received, the drive shaft 5 rotates in the first direction and the support arm 4 rotates about the drive shaft 5 in the clockwise direction in FIG. The pickup roller 3 moves to the feeding position where it comes into contact with the document D stacked on the mounting portion 1 (see FIG. 3). On the other hand, when the drive shaft rotates in the second direction opposite to the first direction, the support arm 4 rotates about the drive shaft 5 in the counterclockwise direction in FIG. It moves to a standby position separated from D (see FIG. 2).

(Shutter member)
A shutter member (regulating member) 6 is provided downstream of the pickup roller 3 in the document feeding direction to regulate the position of the leading edge of the document set on the placing unit 1. The shutter member 6 is rotatably provided around a shaft 6a provided on the opening/closing cover 9, and when the pickup roller 3 is at the standby position, the shutter member 6 is at the regulation position shown in FIG. When the document D is placed, it has a role of blocking the tip of the document D so that the document D does not come into contact with the tip of the document D and cannot be pushed beyond a predetermined position. Further, when the pickup roller 3 moves to the feeding position, the shutter member 6 rotates to the non-regulating position shown in FIG. 3 where the sheet can be fed.

Here, the configuration of the shutter member 6 will be described together with the operation with reference to FIG. FIG. 4A is a diagram showing a state in which the document D is placed on the placing section 1, and at this time, the pickup roller 3 is at the upper standby position. At this time, the shutter member 6 is located at a position for blocking the original feeding port 65 and blocking the original (position for regulating the front end of the original), and the original is provided by the stopper 61 rotatably attached to the shaft of the pickup roller 3. Rotation in the feeding direction is restricted. In this state, when the document enters the document feed port 65, the leading edge of the document D abuts against one end of the shutter member 6 and is prevented from further entering, and the document D is placed at an appropriate position on the placement unit 1. Placed.

After that, when the pickup roller 3 is lowered by the document feeding signal, the stopper 61 that comes into contact with and regulates the shutter member 6 comes into contact with the protrusion 63 provided on the upper guide of the document feeding port 65 and rotates upward. As a result, the stopper 61 is separated from the shutter member 6 and the regulation in the document feeding direction is released (FIG. 4B).

When the pickup roller 3 descends by a predetermined amount, the locking projection 64 of the shutter member 6 contacts the projection 62 provided on the support arm 4 to rotate the shutter member 6 by a predetermined amount and tilt it in the document feeding direction. (FIG. 4(c)). At this time, the shutter member 6 hangs down by its own weight, but since the protrusion 62 rotates a predetermined amount and is inclined at a position where it is inclined toward the upstream side in the document feeding direction, the shutter member 6 is placed at an inclined position. It will be held.

Then, when the pickup roller 3 comes into contact with the uppermost original on the placing portion 1 and the original is fed toward the separating means by the rotation of the pickup roller 3, the shutter member 6 is moved by the leading end of the fed original. The document D is pushed up to the position where it passes. As a result, the document D is sent to the separating portion beyond the position of the shutter member 6 (FIG. 4(d)). At this time, the front end of the shutter member 6 is in contact with the upper surface of the fed original by its own weight.

Further, when the pickup roller 3 moves from the feeding position to the standby position, the shutter member 6 rotates about the shaft 6a by its own weight and returns to the regulation position of FIG. 4(a).

(Separation part)
On the downstream side of the shutter member 6 in the document feeding direction, there is provided a separating section that separates and conveys the documents D fed by the pickup roller 3 one by one. The separation unit has a separation roller 7 that is a conveyance rotating body that conveys the fed original document downstream, and a separation pad 8 that is in pressure contact with the separation roller 7. The originals stacked on the placing portion 1 are fed by the pickup roller 3, but at this time, several higher-order originals may be fed. In this case, the uppermost one sheet is separated by being nipped by the separating roller 7 and the separating pad 8 which rotate in the separating section, and is conveyed to the downstream side, and is conveyed by the conveying roller pair 100 arranged further downstream. It At this time, the pickup roller 3 is moved to the standby position and separated from the original to be conveyed, and the pair of conveying rollers 100 prevents the original from being pulled out.

(Drive transmission means)
Next, a driving force transmission structure for rotating the pickup roller 3, the support arm 4, and the separation roller 7 will be described.

FIG. 5 is a perspective explanatory view showing a drive transmission structure to the pickup roller 3 and the separation roller 7, and FIG. 6 is a schematic explanatory view of a drive transmission path. In FIG. 6, the “>-<” shape indicates a timing pulley, and the “|-|” shape indicates a gear. Further, FIG. 7 is a block diagram of a control configuration for controlling the drive of a feeding motor 30 which is a drive source described later and the on/off of the electromagnetic clutch 52 according to the detection signals detected by the respective sensors.

The pickup roller 3 is swingably supported by a drive shaft 5 of the separation roller 7 via a support arm 4. When the drive shaft 5 rotates in the direction of arrow A (first direction) in FIG. 5, the separation roller 7 also rotates at the same time, and the document D can be separated and conveyed. The support arm 4 has one end supported by the drive shaft 5 and the other end that supports the pickup shaft 22 that supports the pickup roller 3.

A drive pulley 23 is attached to the drive shaft 5, and a driven pulley 24 is attached to the pickup shaft 22, and a timing belt 25 is wound around the drive shaft 23.

A one-way clutch (not shown) is built in the support arm 4, and when the drive shaft 5 rotates in the direction of arrow B (second direction) in FIG. When the shaft 5 rotates in the direction of arrow A, the shaft 5 rotates idly. Here, when the pickup roller 3 is at the upper standby position and the document feeding operation is started with the document placed, the electromagnetic clutch 52 is engaged in the drive transmission means 50 shown in FIG. It The electromagnetic clutch 52 serves as an input transmission interruption clutch capable of transmitting or interrupting the driving force from the feeding motor 30 which is a drive source.

By connecting the electromagnetic clutch 52, the driving force from the feeding motor 30 is transmitted to the pulley 30a, the timing belt 54, and the pulley 53a. Then, it is transmitted from the gear portion 53b of the gear pulley 53 in which the pulley 53a and the gear portion 53b are integrated to the gear 52a included in the electromagnetic clutch 52. Then, the power is transmitted from the gear connecting shaft 52c to the gear 51a via the gear 52b, and the drive is transmitted to the reverse input cutoff clutch 51.

The reverse input cutoff clutch 51 transmits a driving force for rotating the drive shaft in the first direction and the second direction from the feed motor 30, and rotates the drive shaft 5 from the support arm 4 side. A bidirectional clutch that locks the rotation of the drive shaft against a reverse input torque.

The driving force output from the reverse input cutoff clutch 51 is transmitted from the gear 51b to the gear portion 55a of the idler gear 55 in which the gear portion 55a and the gear portion 55b are integrated. Since the gear portion 55b meshes with the gear 20a attached to the end portion of the drive shaft 5, the drive is transmitted to the drive shaft 5.

By transmitting the driving force from the feeding motor 30 to the drive shaft 5 as described above, the drive shaft 5 rotates in the arrow A direction shown in FIG. 5 and the separation roller 7 rotates in the sheet conveying direction. To do. At the same time, the rotational force for holding the pickup roller 3 at the upper standby position by the support arm 4 disappears. Therefore, the pickup roller 3 descends by its own weight and moves to the feeding position where it comes into contact with the original document, and then the rotational force is transmitted from the drive shaft 5 via the timing belt 25, and the pickup roller 3 rotates to start the original document feeding. To do.

When the nip position sensor 40 (see FIG. 7) detects that the fed document D is separated and conveyed by the separation roller 7 and the separation pad 8 one by one, and the leading edge of the sheet reaches the nip of the conveyance roller pair 100, the electromagnetic waves are detected. The clutch 52 is disengaged. As a result, the transmission of the driving force for rotating the separation roller 7 is cut off. After that, the document is transported downstream by driving the transport roller pair 100.

When the electromagnetic clutch 52 is disengaged, the driving force of the feeding motor 30 is not transmitted to the separation roller 7. Therefore, it is possible to drive the conveyance roller pair 100 and the separation roller 7 with the same motor.

When the document placement detection sensor 41 (see FIG. 7) detects that there is no document on the placing unit 1 after feeding of all the documents placed on the placing unit 1 is completed, the control unit 60 feeds the document. The feeding motor 30 is rotated in the opposite direction to that when the sheet is fed. At the same time, by connecting the electromagnetic clutch 52 in the drive transmission means shown in FIGS. 5 and 6, the drive shaft 5 rotates in the direction of arrow B in FIG. As a result, after the support arm 4 rotates together with the drive shaft 5 and the drive shaft 5 is rotated by an amount that raises the pickup roller 3 from the lowermost position where it abuts the mounting portion 1 to the standby position, the electromagnetic clutch 52 is turned on. Disconnect.

By disconnecting the electromagnetic clutch 52, the electromagnetic clutch 52 can be freely rotated downstream of the drive transmission path. However, since the reverse input cutoff clutch 51 is provided in the drive transmission path from the electromagnetic clutch 52 to the support arm 4, it is possible to transmit the driving force from the upstream in the drive transmission path to the downstream, The drive from the upstream side is shut off. That is, when the upstream shaft is rotated in the drive transmission path with respect to the reverse input cutoff clutch 51, the downstream shaft is rotated, but even if only the downstream shaft is rotated, it is locked by the reverse input cutoff clutch 51. Can't rotate to.

Therefore, when the electromagnetic clutch 52 is disengaged after the pickup roller 3 is lifted up to the standby position, the reverse input torque which tends to rotate the drive shaft 5 via the support arm 4 and lower the same due to the weight of the pickup roller 3 itself. Occurs. However, the rotational force for rotating the drive shaft 5 from the support arm 4 on the downstream side of the drive system in the direction of arrow A in FIG. 5 is locked by the reverse input cutoff clutch 51. Therefore, even if the electromagnetic clutch 52 is disengaged, the support arm 4 does not rotate, and the pickup roller 3 does not descend.

By providing the reverse input cutoff clutch 51 as described above, the pickup roller 3 can be held at the standby position without using the electric power for holding the feeding motor 30 while the electromagnetic clutch 52 is connected. ..

Further, as shown in FIG. 1, the reading device of the present embodiment is provided with an opening/closing cover 9 which is an opening/closing member above the pickup roller 3 and the separation roller 7 so as to be opened/closed. The open/close cover 9 can be opened to remove the jam. On the opening/closing cover 9, a part of gears forming the above-mentioned drive transmission means is arranged. Therefore, when the opening/closing cover 9 is opened, the gear 20a provided on the opening/closing cover and the gear 55b provided on the main body that meshes with the opening/closing cover are separated from each other and the meshed state is released. Therefore, if the open/close cover 9 is opened while the pickup roller 3 is in the standby position where the pickup roller 3 is moved upward, the reverse input blocking clutch 51 cannot hold the pickup roller 3 in the standby position, and the pickup roller 3 is lowered by its own weight. To do.

When the pickup roller 3 descends, the shutter member 6 moves to the non-regulating position shown in FIG. 3 in association with the rotation of the support arm 4 as described above. If the shutter member 6 is in a state of standing upright when the opening/closing cover 9 is closed, the opening/closing cover 9 is closed when the document placed on the placing unit 1 moves to the lower part of the shutter member 6. When this happens, the tip of the shutter may hit the document on the placing section 1 and damage the document. On the other hand, in the present embodiment, since the shutter member 6 is in the non-regulating position when the opening/closing cover 9 is closed (in a tilted state), the document placed on the placing unit 1 is located below the shutter member 6. Even if the shutter member 6 is moved to, the shutter member 6 does not hit the document. Therefore, when closing the opening/closing cover 9, the document is not damaged by the shutter member 6.

When the opening/closing cover 9 is closed, it is detected by the cover opening/closing detection sensor 42 (see FIG. 7), and the control unit 60 receives the detection signal and moves the pickup motor 3 and the electromagnetic clutch 52 so as to move the pickup roller 3 to the standby position. To control. Then, the pickup roller 3 is held at the standby position by the reverse input cutoff clutch 51 as described above.

Further, the movement of the pickup roller 3 to the standby position causes the shutter member 6 to return from the non-regulating position to the regulating position. At this time, when the document is below the shutter member 6, the shutter member 6 is placed on the document by its own weight. Then, when the document under the shutter member 6 is exhausted, such as when the document feeding is completed or when the document is pulled out from the placing portion 1, the shutter member 6 returns to the standing state by its own weight, and Locked in the state.

(Adjustment configuration between gear shafts)
Next, in the gear train of the drive transmission means for transmitting the driving force from the feeding motor 30 provided in the apparatus main body to the pickup roller 3 provided in the opening/closing cover 9, between the gear portion 55a of the idler gear 55 and the gear 20a. The adjustment configuration will be described.

As shown in FIGS. 8 to 11, the gear (second gear) 20a is provided on the opening/closing cover 9, and the idler gear (first gear) 55 is provided on the apparatus main body. Therefore, when the opening/closing cover 9 is opened, the gear 20a and the gear portion 55a of the idler gear 55 are separated (see FIG. 10), and when the opening/closing cover 9 is closed, the gear 20a and the gear portion 55a are meshed (see FIG. 9).

As described above, the opening/closing cover 9 can be opened and closed by rotating about the shaft 9b. When the document is jammed in the feeding device, the opening/closing cover 9 is opened to access the jammed document. It has an easy configuration. Further, the opening/closing cover 9 is provided with a withdrawing roller 100a and a registration roller 101a which serve as a first conveying roller for conveying the sheet, and when the opening/closing cover 9 is closed, the apparatus main body comes into pressure contact with the first conveying roller. A pull-out roller 100b and a registration roller 101b, which serve as a second transporting roller, are provided and are in pressure contact with each other. Therefore, the open/close cover 9 receives a reaction force in the arrow a direction and the arrow b direction in the closed state.

A hook member 70, which is a locking portion, is provided on the opening/closing side of the opening/closing cover 9 (opposite to the rotating shaft 9b), and the device body is locked with the hook member 70. A locking shaft 80 is provided. Accordingly, by locking the hook member 70 to the locking shaft 80, the opening/closing cover 9 is held so as not to open even when the reaction force is received.

However, when the opening/closing cover 9 is locked by the hook member 70 as described above and receives a reaction force due to the pressure contact of the conveying roller pair, it is easily deformed as shown by a broken line 9c in FIG. When the open/close cover 9 is deformed as shown by the broken line 9c, the gap between the shafts of the gear portion 55a provided on the apparatus main body side and the gear 20a provided on the open/close cover 9 side is widened, and drive transmission is performed. May not be performed properly.

For this reason, in the present embodiment, as shown in FIG. 11, an adjusting plate 90 is provided as an adjusting member for adjusting the axial distance between the gear portion 55a and the gear 20a. The adjusting plate 90 is rotatably attached on the same axis as the hook shaft 71, which is the center of rotation of the hook member 70, and the adjusting plate 90 holds the shaft 5 that supports the gear 20a. Therefore, the gear 20a is attached so as to be movable within the range of the rotation region of the adjusting plate 90 which is rotatable around the hook shaft 71.

Further, the adjustment plate 90 is formed with a circular arc-shaped elongated hole 90a centered on the shaft 5, and by fixing a screw 91 to this elongated hole 90a, the adjusting plate 90 is fixed to the opening/closing cover 9 at a predetermined position. Has become.

In the above configuration, it is assumed that the opening/closing cover 9 is deformed as shown by the broken line 9c in FIG. 9 as described above, and the axial distance between the gear portion 55a and the gear 20a is changed. At this time, the inter-axle distance can be adjusted by rotating the adjusting plate 90 to move the position of the gear 20a. In the state in which the opening/closing cover 9 is closed and the hook member 70 is locked to the locking shaft 80, the hook shaft 71 provided on the opening/closing cover 9 and the locking shaft 80 provided on the apparatus body are deformed even if the opening/closing cover 9 is deformed. The distance does not change. The gear 20a is attached to the adjusting plate 90 which is rotatable about the same axis as the hook shaft 71, and the gear 55 is arranged in the vicinity of the locking shaft 80. Even if the hook member 70 is rotated counterclockwise about the hook shaft 71, the adjustment plate 90 is rotated clockwise about the hook shaft 71 (direction of arrow c in FIG. 11). The axial distance between the gear portion 55a and the gear 20a can be set to the regular position.

In the present embodiment, as shown in FIG. 12, a U-shaped groove 81 that fits when the rotary shaft 5 of the gear 20a is in the normal position is formed in the housing of the apparatus body. Therefore, when the adjustment plate 90 is rotated to adjust the position of the gear 20a as described above, the rotation shaft 5 is rotated to a position where it comes into contact with the bottom portion 81a of the U-shaped groove 81, so that the gear portion 55a. The position of the gear 20a with respect to can be easily adjusted.

In the above-described embodiment, when adjusting the position of the gear 20a, the adjusting plate 90 is rotated to adjust the position and then fixed by the screw 91. However, other than that, for example, a spring may be used for biasing.

For example, as shown in FIG. 13, a torsion coil spring 92, which is a biasing means, is attached to the hook shaft 71, and one end portion thereof is locked to the adjustment plate 90. Thereby, the gear 20a is configured to be biased toward the gear portion 55a. Further, the gears 20a and 55b are helical gears, and a force that urges the gears in the rotation axis direction acts when the driving force is transmitted, but a force that acts in a direction to separate the gears 20a and 55b. Is small. Since the biasing force by the torsion coil spring 92 is set to be stronger than the force for separating the gears 20a and 55b, the driving force is not transmitted to separate the 20a and 55b. Further, the screw 93 is a stepped screw and has a gap between the screw 93 and the adjusting plate 90 to restrict the lifting of the adjusting plate 90.

With this configuration, even if the opening/closing cover 9 is deformed so that the gap between the gear portion 55a and the gear 20a is separated, the adjusting plate 90 is biased by the torsion coil spring 92, and the opening/closing cover 9 is deformed. The adjusting plate 90 rotates accordingly. Therefore, the distance between the shafts of the gear portion 55a and the gear 20a is kept constant and the driving force is accurately transmitted.

Further, in the above-described embodiment, as the sheet feeding device, the reading device that feeds the document to the reading unit and reads the document information is illustrated. However, it can also be used in an image forming apparatus that feeds a sheet to the image forming section by the sheet feeding apparatus having the above-described configuration and forms an image on the sheet in the image forming section.

A... Reading device B... Sheet feeding device 3... Pickup roller 4... Support arm 5... Drive shaft 9... Open/close cover 9a... Abutment part 9b... Shaft 20a... Gear 30... Feed motor 55... Idler gear 55a... Gear part 60 ... Control part 70 ... Hook member 70 ... Spring clutch 71 ... Hook shaft 80 ... Locking shaft 81 ... U-shaped groove 81a ... Bottom 90 ... Adjusting plate 90a ... Slot 91 ... Screw 92 ... Screw coil spring 100, 101, 102, 105 ...Pair of transport rollers

Claims (8)

A rotating body that conveys sheets,
A motor for generating a driving force for driving the rotating body,
An opening/closing member that is openable/closable with respect to an apparatus main body provided with the motor and opens a conveyance path that guides the sheet, wherein the opening/closing member is provided with the rotating body,
A first gear that is provided in the apparatus body and that transmits the driving force of the motor;
A second gear provided on the opening/closing member, which meshes with the first gear when the opening/closing member is closed to transmit the driving force from the first gear to the rotating body. A second gear that is separated from the first gear in the opened state;
An adjusting member that includes a holding portion that holds the rotation shaft of the second gear, and that adjusts the position of the holding portion by adjusting the position of the holding portion;
A locking portion that is rotatably provided on the opening/closing member and that locks with a locked portion provided on the apparatus main body when the opening/closing member is closed;
The sheet feeding device , wherein the holding portion is rotatably provided on the same axis as the rotation center of the locking portion . The sheet feeding device according to claim 1, wherein the adjustment member includes a fixing unit that fixes the holding unit to the opening/closing member. The opening/closing member is provided with a first transport roller for transporting the sheet, on the downstream side of the rotating body in the transport direction in which the sheet is transported,
The sheet feeding device according to claim 1, wherein the main body of the apparatus is provided with a second transport roller that comes into pressure contact with the first transport roller when the opening/closing member is closed. 4. The sheet feeding device according to claim 1, further comprising a biasing unit that biases the second gear toward the first gear in a state where the opening/closing member is closed. .. The sheet feeding device,
A stacking unit for stacking the sheets,
A second rotating body for feeding the sheets stacked on the stacking unit;
A separating member that forms a nip portion with the rotating body and separates a plurality of sheets conveyed in the state of being overlapped by the second rotating body at the nip portion;
The sheet feeding device according to any one of claims 1 to 4, further comprising: The sheet feeding device according to claim 5, wherein the sheet feeding device includes a transmission portion that transmits the driving force transmitted to the rotating body to the second rotating body. A sheet feeding device according to any one of claims 1 to 6,
A reading unit for reading the information written on the fed sheet,
A reading device comprising: A sheet feeding device according to any one of claims 1 to 6,
An image forming unit that forms an image on the fed sheet,
An image forming apparatus comprising:

Images