JP2025022537A - Sheet conveying device, image reading device and image forming device - Google Patents

Abstract

A sheet conveying device, an image reading device, and an image forming device are provided, in which a rotating member of a discharge tray can be easily operated.
[SOLUTION] The ADF 310 has a document tray 320, a discharge roller 313, and a document discharge tray 319. The document discharge tray 319 is provided with a discharge extension tray 318 that can move between a stored position and a drawn-out position, and the discharge extension tray 318 is provided with a rotating member 318c that can rotate between a reclined position and an erected position. When the discharge extension tray 318 moves from the stored position to the drawn-out position, the rotating member 318c is moved from the reclined position to the erected position by a biasing member 326.
[Selected figure] Figure 5

Description

The present invention relates to a sheet transport device that transports sheets, and an image reading device and an image forming device that are equipped with the same.

Image reading devices installed in image forming devices such as copiers and multifunction machines are equipped with an automatic document feeder (hereinafter referred to as an ADF: Auto Document Feeder) that automatically feeds original sheets one by one. The sheets fed by the ADF have their image information read by an image sensor and are then loaded onto a sheet stacking section such as a discharge tray. Patent Document 1 describes a sheet conveying device that has a sheet discharge tray onto which sheets are discharged, an extension tray that can be pulled out from the sheet discharge tray, and a rotating member (swinging member) that is rotatably supported on the extension tray. When using the device, a user can raise the rotating member provided on the extension tray to improve the alignment of the sheets in the discharge tray.

JP 2021-80046 A

Some ADFs have an output tray located below the document tray. In such cases, when rotating the rotating member on the extension tray, it is necessary to work in the narrow space below the document tray. For this reason, there was a need to improve the operability of raising the rotating member.

The present invention aims to provide a sheet conveying device, an image reading device, and an image forming device that allow easy operation of the rotating member of the discharge tray.

One aspect of the present invention is a sheet conveying device that includes a loading tray on which sheets are loaded, a conveying means for conveying the sheets loaded on the loading tray, a discharge means for discharging the sheets conveyed by the conveying means, a discharge tray disposed below the loading tray and on which the sheets discharged by the discharge means are loaded, an extension tray provided on the discharge tray and movable between a first position stored in the discharge tray and a second position pulled out from the discharge tray, a rotating member provided on the extension tray and rotatable between a third position and a fourth position that is a position rotated upward from the third position and restricts the movement of the sheets discharged by the discharge means in the discharge direction, and a biasing means for biasing the rotating member in a direction from the third position to the fourth position, and the rotating member is moved from the third position to the fourth position by the biasing means when the extension tray moves from the first position to the second position.

The present invention makes it possible to provide a sheet conveying device, an image reading device, and an image forming device that allow easy operation of the rotating member of the discharge tray.

FIG. 2 is a perspective view of the image forming apparatus as viewed from the front side. FIG. 2 is a perspective view of the image forming apparatus as viewed from the right front side. FIG. 2 is a perspective view showing a state in which a pressure plate unit of the image forming apparatus is open. FIG. 1 is a cross-sectional view showing a schematic configuration of an image forming apparatus. FIG. 4 is a side view showing the rotation range of the operation panel with the document feed tray and document discharge tray of the image forming apparatus pulled out. FIG. FIG. 4 is a cross-sectional view showing the output extension tray and the rotating member in the storage position. FIG. 13 is a cross-sectional view showing the output extension tray when it is being pulled out from the storage position. FIG. 13 is a cross-sectional view showing the output extension tray and the rotating member in the pulled-out position. FIG. FIG. FIG. 13 is a perspective view showing a state in which a rotating member is removed from the output extension tray.

The following describes in detail an embodiment of the present invention with reference to the attached drawings. Note that the following embodiment is an example of the present invention and does not limit the technical scope of the present invention.

[Image forming apparatus]
First, an image forming apparatus 100 according to the present embodiment will be described. The image forming apparatus 100 is a printer capable of forming a full-color image on a sheet. In this embodiment, the image forming apparatus 100 includes an image forming apparatus main body 200 having an image forming section 201 for forming an image on a sheet, and an image reading apparatus 300 having a reading unit 301 as an image reading section for reading an image of a document. The image reading apparatus 300 is provided on the upper part of the image forming apparatus main body 200. In the following, the sheet includes not only plain paper, but also special paper such as coated paper, recording materials having special shapes such as envelopes and index paper, and plastic films and cloths for overhead projectors, and a document is also an example of a sheet.

The image forming apparatus 100 is provided with an operation panel 400 as an operation unit for receiving operations from an operator on the front side of the apparatus (the front side in FIG. 1, the front left side in FIG. 2 and FIG. 3, and the right side in FIG. 4). The operation panel 400 has a physical switch 401 such as a start button, and a display unit 402 such as an LCD screen that can display various information and can be operated by touch. In this embodiment, as shown in FIG. 1 and FIG. 2, the operation panel 400 is disposed on the front side of the image forming apparatus 100 (the surface on the front side of the apparatus), shifted to the left from the center of the apparatus when viewed from the front side. Note that the operation panel 400 may also be shifted to the right side.

Hereinafter, the side on which the operation panel 400 is located will be referred to as the front side, front side or front face of the device, and the opposite side will be referred to as the rear side, rear side or back side of the device (the rear side in Figure 1, the right rear side in Figures 2 and 3, and the left side in Figure 4). Furthermore, when simply referring to "right" or "left", this refers to the case where the image forming device 100 is viewed from the front side. Furthermore, the direction from the front side of the device to the rear side of the device and the direction from the rear side of the device to the front side of the device will be referred to as the front-to-rear direction, and the left-to-right direction when the image forming device 100 is viewed from the front side will be referred to simply as the "left-to-right direction" or "width direction".

In this embodiment, as described later, the image forming unit 201 is an inkjet type image forming unit that forms an image by ejecting ink onto a sheet. For this reason, remaining ink display units 202a and 202b that display the remaining ink amounts used in the image forming unit 201 are arranged on the front side of the image forming device 100. The remaining ink display unit 202a on the right side of the image forming device 100 indicates the remaining ink amounts of yellow, magenta, and cyan colors, and the remaining ink display unit 202b on the left side indicates the remaining ink amount of black ink. In this embodiment, the remaining ink display units 202a and 202b are windows formed so that the remaining ink amounts in the ink tanks of each color can be seen, but they may also be display units such as LCD screens that display images according to the remaining ink amounts of each color. In addition, the positions of the remaining ink display units for the color inks and black ink may be reversed, or may be arranged together on either the left or right side.

The image forming apparatus 100 also has a USB terminal 101 on the front side thereof for connecting to an external terminal such as a personal computer. The USB terminal 101 may be provided on the right or left side of the image forming apparatus 100, or on the rear side. In this embodiment, the USB terminal 101 is provided on the front side of the image forming apparatus 100 to improve operability from the front of the image forming apparatus 100.

[Image forming apparatus body]
Next, the image forming apparatus main body 200 will be described. As shown in Fig. 4, the image forming apparatus main body 200 has a cassette 203, a pickup roller 204 as a sheet feeding section, an image forming section 201, a pair of discharge rollers 205 as a sheet discharge section, and the like. The cassette 203 as a sheet supporting section supports a sheet. The pickup roller 204 feeds the sheet supported by the cassette 203. The image forming section 201 forms an image on the sheet fed from the pickup roller 204. The pair of discharge rollers 205 discharges the sheet on which the image has been formed by the image forming section 201. A detailed description will be given below.

The cassette 203 can accommodate multiple sheets, which are supported in a stacked state within the cassette 203. The cassette 203 can be inserted into and pulled out of the housing 210 of the image forming apparatus main body 200. The cassette 203 is pulled out toward the front of the apparatus. That is, when storing sheets in the cassette 203, the cassette 203 is pulled out toward the front of the apparatus. The cassette 203 containing the sheets is then pushed toward the rear of the apparatus to attach the cassette 203 to the housing 210. For this reason, a cassette gripping portion 203a (see Figures 1, 2, etc.) is provided on the front side of the cassette 203 for an operator to grasp with his or her hand and pull out the cassette 203.

The pickup roller 204 picks up the sheets in the cassette 203. The topmost sheet in the cassette 203 is picked up by the pickup roller 204 and fed toward the conveying path 206a. The pickup roller 204 feeds the sheet in the direction from the front side of the device to the back side of the device.

The sheet transported through the transport path 206a reaches a pair of registration rollers 207, which serve as transport members for transporting the sheet. The pair of registration rollers 207, which are stopped in rotation, are struck by the sheet transported from the transport path 206a. This corrects the skew of the sheet. Next, the pair of registration rollers 207 starts rotating in synchronization with the image formation by the image forming unit 201, and sends the sheet into the image forming unit 201.

Incidentally, a reverse conveying path 206b is provided upstream of the registration roller pair 207 in the sheet conveying direction to reverse the sheet conveyed in the reverse direction and send it to the image forming unit 201. When forming images on both sides of a sheet, the image forming unit 201 forms an image on one side of the sheet conveyed from the conveying path 206a. The sheet with the image formed on one side is then conveyed in the reverse direction, and the conveying path is switched by a switching member (not shown) to guide it to the reverse conveying path 206b. The reversed sheet then reaches the registration roller pair 207 again, and the image forming unit 201 forms an image on the back side of the sheet.

In this embodiment, a manual feed tray 208 is provided at the top of the image forming apparatus 100 at the rear side of the apparatus. The manual feed tray 208 can be rotated between a storage position shown in FIG. 4 and a loading position where the manual feed tray 208 can be opened from the storage position and a sheet can be loaded. In the loading position, the sheet can be fed into the apparatus. Specifically, the sheet loaded on the manual feed tray 208 is transported into the transport path by a feed roller (not shown). The sheet transported in the transport path reaches a pair of registration rollers 207. After that, the process is the same as that of the sheet transported from the cassette 203. The manual feed tray 208 is provided at the rear side of the image reading device 300, and in the storage position, it does not protrude from the rear surface of the housing 210 of the image forming apparatus main body 200 and the top surface of the image reading device 300.

As described above, the image forming unit 201 employs a conventional inkjet method of ejecting ink to form an image on a sheet. That is, it has a recording head capable of ejecting ink of each color, and the recording head of each color ejects ink toward the sheet transported by the registration roller pair 207 in response to an image signal input from the image reading device 300 or an external terminal. In this way, an image is formed on the sheet. Note that the image forming unit 201 may be an electrophotographic image forming unit using toner.

The pair of discharge rollers 205 discharges the sheet on which an image has been formed by the image forming unit 201 to the discharge tray 209. The pair of discharge rollers 205 discharges the sheet in a direction from the rear of the device toward the front of the device. The discharge tray 209 can be inserted into and pulled out of the housing 210. The discharge tray 209 is pulled out toward the front of the device. For this reason, a discharge tray gripper 209a (see Figures 1, 2, etc.) is provided on the front side of the discharge tray 209 so that the operator can grasp it with his or her hand and pull out the discharge tray 209.

[Image reading device]
Next, the image reading device 300 will be described. As shown in Fig. 3 and Fig. 4, the image reading device 300 has an ADF 310 as an automatic document feeder, a document table glass 302, a pressure plate portion 303 as a document pressing portion, two hinge portions 304 (Fig. 3) as a rotation support portion, a reading unit 301, and the like. The image reading device 300 of this embodiment can read an image of a document in two modes, a flow reading mode and a fixed reading mode. The flow reading mode is a mode in which an image of a document is read by the reading unit 301 while the document is being transported by the ADF 310. The fixed reading mode is a mode in which an image of a document is read by moving the reading unit 301 while the document is placed on the document table glass 302 and pressed against the document table glass 302 by the pressure plate portion 303.

[Document glass and pressure plate]
First, the configuration of the platen glass 302 and the pressure plate unit 303 will be described with reference to Fig. 1 to Fig. 3. The platen glass 302 has a platen surface 302a on which a document is placed. That is, the image reading device 300 has a platen 332 on which the platen glass 302 and the reading glass 333 are provided. The upper surface of the platen glass 302 serves as the platen surface 302a.

The platen glass 302 is provided over the entire range in which the reading unit 301 moves to read so that the image of the document placed on the platen glass 302 can be read by the reading unit 301 when the fixed reading mode is performed. On the other hand, the reading glass 333 is provided at an image reading position (scanning position) behind the platen glass 302. In other words, the reading glass 333 is provided at a position where the reading unit 301 stops when the scan mode is performed. When the scan mode is performed, the reading unit 301 moves to a position opposite the reading glass 333 and reads the image of the document transported by the ADF 310 (described later) through the reading glass 333.

The pressure plate 303, which serves as a document pressing unit, presses the document placed on the document table glass 302 against the document table glass 302. The pressure plate 303, together with the ADF 310 described later, is supported by a hinge unit 304, which serves as a rotation support unit, to be rotatable relative to the housing 330a on the document table 332 side of the image reading device 300 between the closed position shown in FIGS. 1 and 2 and the open position shown in FIG. 3.

The closed position is a position where the pressure platen 303 presses the document against the document glass 302. The open position is a position where the document glass 302 is opened so that a document can be placed on the document glass 302. The hinge portion 304 supports the pressure platen 303 so that it can rotate about a rotation shaft relative to the housing 330a of the image reading device 300. The rotation shaft is arranged in a direction from the front side of the device to the rear side of the device, and in a direction along the width direction (left-right direction) that is perpendicular to the up-down direction.

The hinge unit 304 is located on the rear side of the platen glass 302, and a gripping portion 323 that can be gripped to rotate the platen 303 from the closed position to the open position is located at the end of the platen 303 on the front side of the device. The gripping portion 323 is a recess formed on the end face of the platen 303 on the front side of the device so that an operator can insert his/her hand and lift the platen 303 to rotate the platen 303 to the open position. The gripping portion 323 can also be inserted and pushed down to rotate the platen 303 from the open position to the closed position. This gripping portion 323 also serves as a gripping portion for pulling out the sub-tray 322 of the document tray 320, as described later.

In this embodiment, the hinge portion 304 is disposed at the rear of the device, and the grip portion 323 is disposed at the front of the device. Therefore, the operator grasps the grip portion 323 from the front of the device to open and close the pressure plate portion 303. For example, when rotating the pressure plate portion 303 from the closed position to the open position, the operator grasps the grip portion 323 and lifts the pressure plate portion 303. At this time, the end portion of the pressure plate portion 303 on the front side of the device follows an orbit around the rotation axis of the hinge portion 304, which is positioned closer to the rear of the device as it moves upward.

As shown in FIG. 3, the end of the platen glass 302 is provided with a first abutment portion 305 and a second abutment portion 306 against which the edge of the document placed on the document placement surface 302a abuts in order to position the document at a reference position for reading the document. The first abutment portion 305 positions the document in the front-to-rear direction, and the second abutment portion 306 positions the document in the left-to-right direction.

[ADF]
Next, the ADF 310 will be described with reference to FIGS. 4 and 5. The ADF 310 is provided on the pressure plate section 303, and includes a document tray 320, a document feed section 311, a back side reading unit 312, and a discharge roller 313 as a document discharge section. The document tray 320 as a document support section supports a document. The document feed section 311 feeds the document supported by the document tray 320. The back side reading unit 312 reads the image on the back side of the document fed from the document feed section 311. The image on the front side of the document is read by the reading unit 301 as an image reading section. The discharge roller 313 discharges the document whose image has been read by the reading unit 301 or the back side reading unit 312. In this embodiment, the maximum size of the document that can be transported by the ADF 310 is A4 portrait size. That is, the document can be transported so that the longitudinal direction of the document of the maximum document size, A4 size, is the transport direction. The details are explained below.

At least a portion of the document tray 320 is arranged so as to be slidable toward the front of the device relative to the housing 330 on the ADF 310 side of the image reading device 300. Specifically, the document tray 320 has a main tray 321 as a first support section having a first support surface 321a that supports a document, and a sub-tray 322 as a second support section and sliding support section having a second support surface 322a that supports the document together with the first support surface 321a. The sub-tray 322 is arranged so as to be slidable between a non-use position and a use position that is closer to the front of the device than the non-use position relative to the housing 330 that has the pressure plate section 303, and forms a support surface that can support a document in the use position. Details of the document tray 320 will be described later.

The document feed unit 311 includes a pickup roller 314, a separation roller 315, and a separation pad 316. The pickup roller 314 picks up the topmost document placed on the document tray 320. The separation roller 315 and the separation pad 316 are arranged to be in pressure contact with each other, and separate the documents picked up by the pickup roller 314 one by one and transport them to a transport path 317. The document feed unit 311 feeds the documents in the direction from the front side of the device to the back side of the device.

Along the transport path 317, transport rollers 317a are provided as a document transport section for transporting the document, and the document separated and transported by separation roller 315 is transported further downstream by transport rollers 317a. That is, transport rollers 317a transport the document fed from document feed section 311 toward the image reading position. Then, the image on the front side of the document is read by reading unit 301 located at the image reading position. In addition, a back side reading unit 312 is disposed downstream of the image reading position in the document transport direction on transport path 317, facing the back side of the document passing through transport path 317. When the operator instructs to read the back side of the document, the back side reading unit 312 also reads the image on the back side of the document.

The discharge rollers 313 discharge the document, whose image has been read by the reading unit 301 or the back side reading unit 312, onto the document discharge tray 319. The discharge rollers 313 discharge the document in a direction from the back side of the device to the front side of the device.

The document discharge tray 319, which serves as a placement section, is where documents discharged from the discharge rollers 313 are placed. The document discharge tray 319 has a discharge extension tray 318 for supporting documents together with the document discharge tray 319. Such a discharge extension tray 318 can be inserted into and pulled out of the housing 330. The discharge extension tray 318 is pulled out towards the front of the device. For this reason, a discharge tray gripping section 318a (see Figures 1, 2, etc.) is provided on the front side of the discharge extension tray 318, which the operator can grip to pull out the discharge extension tray 318.

The reading unit 301 and the back side reading unit 312 are, for example, contact image sensors (CIS). The CIS reads the image information of the document by irradiating the surface of the document with light from a light source such as an LED, and focusing the light reflected from that surface on a sensor element using a self-focusing rod lens array. The reading unit 301, which reads the front side of the document, is movable inside the document table glass 302 as described below, and is stopped at the image reading position when reading the image of the document transported by the ADF 310 (i.e., in the case of the running reading mode). In this embodiment, the reading unit 301 is configured to move in the front-to-rear direction of the device.

[Original Tray]
As described above, the document tray 320 as a loading tray is configured such that the sub-tray 322 as the second support portion can slide relative to the main tray 321 as the first support portion between a non-use position and a use position. The non-use position is a position where the sub-tray 322 covers the upper part of the main tray 321 with the second support surface 322a positioned above the back surface 322b that is the surface behind the second support surface 322a. In other words, the non-use position is a storage position where the sub-tray 322 is stored in the housing 330, and is the position shown in FIGS.

The second support surface 322a of the sub-tray 322 faces upward even when it is in the non-use position, and is not configured such that, for example, the sub-tray rotates when stored so that the back surface faces upward. The second support surface 322a of the sub-tray 322 forms the exterior surface of the image reading device 300 when it is in the non-use position. In other words, the second support surface 322a also serves as the exterior cover of the image reading device 300.

In this embodiment, when the sub-tray 322 is in the non-use position, it is continuous with the upper surface 331 of the housing 330 with almost no step, and when the image forming device 100 is installed in the installation location, the second support surface 322a and the upper surface 331 are approximately parallel to the horizontal plane. Therefore, it is possible to place documents and the like on the second support surface 322a and the upper surface 331.

The second support surface 322a of the sub-tray 322 is continuous with the upper surface 331 with almost no gap or with a small gap (for example, 1 mm or less) when in the unused position. There may be a step between the second support surface 322a and the upper surface 331, or the second support surface 322a may be inclined with respect to the horizontal plane when in the unused position. The second support surface 322a of the sub-tray 322 does not have to be exposed upward when stored in the housing 330. For example, the sub-tray 322 may be configured to be stored below the top plate of the housing 330 and above the main tray 321. In short, it is sufficient that the sub-tray 322 is configured to be stored above the main tray 321 by sliding movement.

The use position is a position where the second support surface 322a is positioned above the back surface 322b and supports the document together with the first support surface 321a. That is, it is the position shown in Figures 4 and 5, and is the document set position where the document is set. When the sub-tray 322 is in the use position, the second support surface 322a has a larger inclination angle with respect to the horizontal plane than the first support surface 321a. At this time, the inclination direction of the second support surface 322a is inclined downward as it approaches the downstream side in the document feeding direction.

In this embodiment, the sub-tray 322 is positioned at the use position by pulling the sub-tray 322 out from the non-use position towards the front of the device. That is, the direction in which the sub-tray 322 slides from the non-use position to the use position is from the rear of the device towards the front of the device. In addition, when returning the sub-tray 322 from the use position to the non-use position, the sub-tray 322 is positioned at the non-use position by pushing it towards the rear of the device while returning the inclination of the sub-tray 322 to the state in the non-use position.

The end of the sub-tray 322 on the front side of the device is provided with a grip 323 as a slide movement grip that is gripped to slide the sub-tray 322. As shown in FIG. 5, the grip 323 has a notch 323a cut out so as to open downward at a portion of the end of the sub-tray 322 on the front side of the device, and a recess 323b recessed upward at the rear side of the notch 323a. When pulling the sub-tray 322 out to the front side of the device, for example, the operator inserts his finger into the recess 323b and pulls the sub-tray 322 to the front side of the device. On the other hand, when rotating the pressure plate 303 from the closed position to the open position, for example, the operator inserts his hand into the notch 323a and lifts the pressure plate 303.

The discharge extension tray 318 is located below the cutout 323a. By inserting a hand into the cutout 323a, it is possible to grip the discharge tray grip 318a described above. It is also possible to rotate the pressure plate 303 from the open position to the closed position by inserting a hand into the cutout 323a, gripping and pushing down the discharge tray grip 318a of the discharge extension tray 318 when it is not pulled out, i.e., when it is inserted.

In this embodiment, the grip 323 thus doubles as a grip for pulling out the sub-tray 322 and for opening and closing the pressure plate 303.

[Extension output tray]
Next, the configuration of the discharge extension tray 318 will be described with reference to Figures 7 to 12. As shown in Figure 11, the discharge extension tray 318 has an extension tray main body 318b and a rotating member 318c. The extension tray main body 318b is provided so as to be slidable between a stored position (first position) stored in the document discharge tray 319 and a pulled-out position (second position) pulled out from the document discharge tray 319. A recess 318g is formed in the extension tray main body 318b, and the rotating member 318c is stored so as to fit into the recess 318g (see Figure 7).

As shown in FIG. 12, the rotating member 318c has two rotating shafts 318d protruding on both sides in the width direction, and the extension tray body 318b has two holes 318f into which the rotating shafts 318d fit. As a result, the rotating member 318c can rotate between a reclined position (third position) stored in the recessed portion 318g and an upright position (fourth position) in which the rotating member 318c rotates upward from the reclined position and stands up against the extension tray body 318b. In the upright position, the rotating member 318c restricts the movement of the document discharged by the discharge roller 313 in the discharge direction. This makes it possible to prevent the document discharged by the discharge roller 313 from flying out of the device, improving the stacking ability of the document on the document discharge tray 319. As described above, the rotating member 318c is stored so as to fit into the recessed portion 318g in the reclined position. At this time, the rotating member 318c is parallel to the extension tray main body 318b. The rotating direction of the rotating member 318c from the reclined position to the upright position is from downstream to upstream in the discharge direction.

The rotating member 318 has two ribs 324 formed on its upper surface when in the reclined position (the surface upstream in the discharge direction when in the upright position). The ribs 324 come into contact with the leading edge of the document discharged by the discharge roller 313.

In addition, a biasing member 326 is provided on the rotation shaft 318d of the rotating member 318c. The biasing member 326 is a torsion coil spring that biases the rotating member 318c from the reclined position to the upright position. The rotating member 318c rotates from the reclined position to the upright position due to the biasing force of the biasing member 326. In a cross section perpendicular to the axial direction of the rotating shaft 318d, the hole 318f has a protrusion 327 that protrudes inward, and the rotating shaft 318d has a flat surface 318e. When the rotating member 318c rotates due to the biasing member 326, the protrusion 327 comes into contact with the flat surface 318e. This holds the rotating member 318c in the upright position.

As shown in FIG. 7, the discharge extension tray 318 is stored in the space below the cover portion 325 of the document discharge tray 319. The cover portion 325 is a portion that covers the discharge extension tray 318 and the rotating member 318c in the stored position, and functions as a support surface that supports the discharged document. As described above, the action of the biasing member 326 causes the rotating member 318c to move from the reclined position to the upright position, but when the discharge extension tray 318 is in the stored position, the rotating member 318c is held down by the cover portion 325 and is held in the reclined position.

When the discharge extension tray 318 is pulled out from the document discharge tray 319, the rotating member 318c is released from the cover portion 325 and stands up due to the biasing force of the biasing member 326. Then, as shown in FIG. 9, when the discharge extension tray 318 moves to the pulled-out position, the rotating member 318c is held in the upright position. In this way, when the discharge extension tray 318 moves from the stored position to the pulled-out position, the biasing member 326 moves the rotating member 318c from the retracted position to the upright position.

When the discharge extension tray 318 moves from the pull-out position to the storage position, as shown in FIG. 8, the rib 324 of the rotating member 318c first comes into contact with the cover portion 325. Then, when the discharge extension tray 318 is further stored, the rib 324 slides against the cover portion 325, and the rotating member 318c moves to the retracted position.

As described above, in this embodiment, when the discharge extension tray 318 moves from the storage position to the pull-out position, the urging member 326 moves the rotating member 318c from the reclined position to the upright position. This simplifies the operation for the user to raise the rotating member 318c, improving operability.

In addition, in this embodiment, when the discharge extension tray 318 moves from the pull-out position to the storage position, the cover portion 325 moves the pivot member 318c from the upright position to the reclined position. This makes it possible for the user to easily move the pivot member 318c to the reclined position.

Furthermore, in this embodiment, the rotating member 318c has a rib 324 that abuts against the cover portion 325. This makes it possible to reduce the resistance when the rotating member 318c slides against the cover portion 325, further improving operability.

100 Image forming apparatus 300 Image reading apparatus 310 ADF
318: Discharge extension tray; 318c: Rotating member; 319: Document discharge tray; 326: Pressing member

Claims (8)

A loading tray on which sheets are loaded;
a conveying means for conveying the sheets stacked on the stacking tray;
a discharge means for discharging the sheet conveyed by the conveying means;
a discharge tray disposed below the stacking tray and on which the sheets discharged by the discharge means are stacked;
an extension tray provided on the discharge tray and movable between a first position stored in the discharge tray and a second position pulled out from the discharge tray;
a rotating member provided on the extension tray and rotatable between a third position and a fourth position rotated upward from the third position and restricting movement of the sheet discharged by the discharge means in a discharge direction;
a biasing means for biasing the rotating member in a direction from the third position toward the fourth position;
Equipped with
When the extension tray moves from the first position to the second position, the rotating member moves from the third position to the fourth position by the biasing means.
A sheet conveying device comprising: the ejection tray has a cover portion that covers an upper portion of the extension tray and the rotating member when the extension tray is located at the third position,
When the extension tray moves from the second position to the first position, the rotating member abuts against the cover portion and moves from the fourth position to the third position against the biasing means.
2. The sheet transport device according to claim 1. The rotating member has a rib that comes into contact with the cover portion.
3. The sheet transport device according to claim 2. the extension tray has a recess into which the rotating member located at the third position fits;
2. The sheet transport device according to claim 1. A rotation direction of the rotating member from the third position to the fourth position is a direction from downstream to upstream in the discharge direction.
2. The sheet transport device according to claim 1. The biasing means is a torsion coil spring provided on a rotation shaft portion of the rotating member.
2. The sheet transport device according to claim 1. A sheet conveying device according to any one of claims 1 to 6,
a reading unit configured to read an image on the sheet conveyed by the conveying unit. The image reading device according to claim 7 ;
and an image forming unit that forms an image on a recording material based on the image on the sheet read by the reading unit.
1. An image forming apparatus comprising:

Images