Recording material conveying device

Abstract

To stabilize the effect of pre-sorting the recording material to be fed even when the loading angle of the recording material varies depending on the loading amount, compared with a case where the position of a feed roller is always set to the same position regardless of the loading amount of the recording material loaded on a loading section. [Solution] The recording material conveying device is characterized by a loading section for loading recording materials and having a loading angle that varies depending on the loading amount of the loaded recording materials, a feed roller that feeds the recording materials loaded in the loading section, a contact section with which the tip of the recording material fed by the feed roller comes into contact, and a setting position of the feed roller that varies depending on the loading angle of the loading section based on the loading amount of the recording materials loaded in the loading section.

Description

[Technical Field]

[0001] The present invention relates to a recording material conveying device. [Background technology]

[0002] Patent Document 1 describes a problem of providing a paper feeder that can prevent double feeding and no-feeds and is applicable to high-speed machines. To solve this problem, Patent Document 1 describes a configuration in which the inclination angle of the inclined surface that the leading edge of the paper fed from the feeding means comes into contact with and moves over can be changed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-055705 Summary of the Invention [Problem to be solved by the invention]

[0004] There are recording material conveying devices that are installed in scanners alone or image reading devices such as image forming devices, and that feed recording materials using a feed roller. In these recording material conveying devices, in order to separate the recording materials, a configuration is adopted in which the leading edge of the recording material being fed is thrust into a contact portion such as an inclined guide to separate the recording materials. In the recording material conveying device, if the stacking angle of the recording materials varies depending on the amount of recording materials loaded, the recording materials sent out from the feed roller may not contact the contact portion depending on the stacking angle of the recording materials, and in this case, the effect of the contact portion in pre-separating the recording materials may not be stable. To stabilize the effect of pre-sorting the recording material being fed even when the loading angle of the recording material varies depending on the loading amount, compared to when the position of the feed roller is always set to the same position regardless of the loading amount of the recording material loaded on the loading section. [Means for solving the problem]

[0005] The invention described in claim 1 is a recording material conveying device characterized by comprising a loading section for loading recording material and having a loading angle that varies depending on the loading amount of the loaded recording material, a feed roller that feeds the recording material loaded in the loading section, a contact section with which the leading edge of the recording material fed by the feed roller comes into contact, and a setting position of the feed roller that varies depending on the loading angle of the loading section based on the loading amount of the recording material loaded in the loading section. The invention described in claim 2 is the recording material conveying device described in claim 1, characterized in that the loading angle is the angle of a loading plate that rotates around the upstream side of the loading section in the recording material conveying direction as a fulcrum relative to the main body of the loading section, and the setting position of the feed roller is set to a lower position when the loading angle is large compared to when the loading angle is small. The invention described in claim 3 is a recording material conveying device described in claim 2, characterized in that the loading angle of the loading plate is detected by the lift-up time of the loading plate before the initial feeding of the recording material begins. The invention described in claim 4 is a recording material conveying device described in claim 1, characterized in that the position of the feed roller becomes lower than the set position by feeding out the recording material loaded in the stacking section, and the feed roller, which has become lower than the set position, is pushed up by a change in the stacking angle of the stacking section. The invention described in claim 5 is a recording material conveying device described in claim 4, characterized in that when the feed roller, which has become lower than the set position due to the feeding of the recording material, is pushed up by changing the loading angle, it is pushed up to a position lower than the set position when the feeding of the recording material begins. The invention described in claim 6 is a recording material conveying device described in claim 4, characterized in that the interval at which the feed roller, which has become lower than the set position, is pushed up due to a change in the loading angle is set narrower when the loading angle is large than when the loading angle is small. The invention described in claim 7 is a recording material conveying device described in claim 4, characterized in that when the feed roller, which has become lower than the set position due to the feeding of the recording material, is pushed up by changing the loading angle, when the loading angle is large, the amount of change from the position of the feed roller before the change to the set position of the feed roller after the change is set to be smaller than when the loading angle is small. The invention described in claim 8 is a recording material conveying device described in claim 7, characterized in that the amount of change when starting to feed the recording material is smaller than the amount of change after starting to feed the recording material. A ninth aspect of the present invention is the recording material conveying device according to the first aspect, wherein the contact portion is contacted by the leading edge of the recording material fed by the feed roller, regardless of the stacking angle. [Effects of the Invention]

[0006] According to the invention as set forth in claim 1, even if the loading angle of the recording materials varies depending on the loading amount, the effect of pre-sorting the recording materials to be fed can be stabilized. According to the invention as set forth in claim 2, even when the loading angle is large, the front handling effect can be stabilized. According to the invention as set forth in claim 3, the loading angle of the loading plate can be detected even when the types of recording materials are different. According to the invention as set forth in claim 4, even if the delivery roller becomes lower than the set position, it can be pushed up again to the set position where the forward handling effect is achieved. According to the invention as set forth in claim 5, the set position can be adjusted each time according to the loading angle of the loading section. According to the invention as set forth in claim 6, when the loading angle is large, which is a state in which the pre-separation effect is difficult to stabilize, the set position of the delivery roller can be controlled more precisely. According to the seventh aspect of the present invention, even if the loading angle is large, the position of the delivery roller when the recording materials are being continuously conveyed can be adjusted to a position that stabilizes the front separation effect. According to the invention as set forth in claim 8, the amount of change can be adjusted each time according to the loading angle of the loading section. According to the invention as set forth in claim 9, even when the stacking angle of the recording materials is different, the effect of pre-sorting the recording materials to be fed can be stabilized. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram illustrating an overall configuration of an image reading apparatus. [Figure 2] 10A and 10B are diagrams illustrating a rotation mechanism of a loading plate in the document loading section. [Figure 3] 10A and 10B are diagrams illustrating the positional relationship between a light-shielding sensor and a feed roller. [Figure 4] 10 is a flowchart showing a control process of a feed roller when a document is fed. [Figure 5] 10 is a flowchart showing a process during delivery at the first set position. [Figure 6] 10 is a flowchart showing a process during delivery at the second set position. [Figure 7] 10A and 10B are diagrams showing changes in the position of the feed roller when a large amount of documents is loaded. [Figure 8] 10A and 10B are diagrams showing changes in the position of the feed roller when the amount of documents loaded is small. DETAILED DESCRIPTION OF THE INVENTION

[0008] <Explanation of image reading device> Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram showing the overall configuration of an image reading device 1. As shown in FIG. The image reading device 1 includes a scanner device 10 that acquires an image of a document by scanning the document, and a document feeder 20 that transports the document to the scanner device 10. Note that the document is an example of a recording material, and the document feeder 20 is an example of a recording material transport device.

[0009] The document feeder 20 is provided with a document stacking section 100 on which a stack of documents consisting of multiple documents is stacked. The document stacking section 100 is provided with a stacking plate 101 that rotates in direction a or b around a fulcrum S1 on the upstream side in the document feed direction, and a main body 103 that supports the stacking plate 101. The document feeder 20 also has an output stacking section 21 that is provided below the document stacking section 100 and on which documents that have been read are stacked. The document stacking section 100 is an example of a stacking section.

[0010] The document feeder 20 is also provided with a feed roller 110 that feeds out the documents from the document stacker 100. The document feeder 20 is also provided with a separation mechanism 120 that separates the documents fed out by the feed roller 110 one by one and transports them downstream. The separation mechanism 120 is provided with a paper feed roller 121 that transports the documents downstream, and a separation roller 122 that separates the documents one by one. The paper feed roller 121 is fixed around a fulcrum S2 as its axis.

[0011] The document feeder 20 is also provided with a blanket 130 that holds the feed roller 110 and the paper feed roller 121. This allows the feed roller 110 to rotate around the fulcrum S2 as a rotation center in a direction c in which the feed roller 110 is raised or in a direction d in which the feed roller 110 is lowered.

[0012] The document feeder 20 is also provided with a guide member 140 that comes into contact with the leading edge of the document fed by the feed roller 110 and guides the document to the separation mechanism 120. The guide member 140 is provided between the feed roller 110 and the separation mechanism 120. The guide member 140 is provided so as to incline from one end of the document stacking section 100 toward one end of the transport path 22 (described later). The guide member 140 has a role of performing so-called "pre-separation" to prevent multiple documents from rushing into the separation mechanism 120. The guide member 140 is an example of a contact portion.

[0013] Furthermore, the transport path 22 along which the originals are transported is provided with a transport roller 23 that transports the separated originals one by one toward a downstream roller, and a registration roller 24 that supplies the originals to the scanner device 10 while performing registration adjustment. Also provided are a chute 25 that assists in transporting the document being read by the scanner device 10, and out-rollers 26 that transport the read document further downstream. Furthermore, there are provided discharge rollers 27 that discharge the document onto the discharge stacking section 21.

[0014] The scanner device 10 includes a housing 13 and a device frame 14 . A first platen glass 11A on which a stationary document is placed and a second platen glass 11B that transmits light for reading the document transported by the document feeder 20 are attached to the device frame 14.

[0015] Inside the housing 13, a reading unit 12 is provided that reads the document placed on the first platen glass 11A and the document transported by the document feeder 20. Furthermore, a movement mechanism (not shown) is provided to move the reading unit 12 in the left and right directions in the drawing. The movement mechanism is not particularly limited and may be configured by a known mechanism.

[0016] When reading a document placed on the first platen glass 11A, the reading unit 12 moves rightward below the first platen glass 11A. When the document conveyed by the document feeder 20 is read, the reading unit 12 is disposed in a stationary state below the second platen glass 11B.

[0017] Inside the reading unit 12, there are provided a light source constituted by an LED or the like, an imaging optical system that collects light reflected from the document, and a light receiving sensor that receives the light collected by the imaging optical system. A hinge (not shown) for opening and closing the document feeder 20 is provided on the rear side of the image reading device 1, and in this embodiment, the document feeder 20 can be rotated toward the rear side of the image reading device 1.

[0018] When placing a document on the first platen glass 11A, the user rotates the document feeder 20 toward the rear side of the image reading device 1. Then, when the user places the document on the first platen glass 11A, the user rotates the document feeder 20 toward the front side of the image reading device 1, and returns the document feeder 20 to its original position. In this embodiment, thereafter, a start button (not shown) is pressed to start reading the document.

[0019] The image reading device 1 of this embodiment is also provided with a control unit 200 that controls each part of the image reading device 1. The control unit 200 has a CPU (Central Processing Unit) that controls the operation of the entire device, and controls the setting position of the feed roller 110 in this embodiment, etc.

[0020] 2 is a diagram illustrating the rotation mechanism of the loading plate 101 in the document loading section 100. The loading plate 101 is provided with a lifting member 102 for rotating the loading plate 101 in the direction e to lift it up or in the direction f to lower it. The lifting member 102 has a fulcrum S3 on the main body 103, rotates around this fulcrum S3, and comes into contact with the bottom of the loading plate 101 to push it up. The lifting member 102 rotates in the direction e or f by a motor (not shown).

[0021] Rotation of the lifting member 102 in the direction e or f rotates the stacker plate 101 around the fulcrum S1 in the direction a, which moves it closer to the feed roller 110, or in the direction b, which moves it away from the feed roller 110. At this time, the stacking angle of the stacker plate 101 in the document stacking unit 100 changes. The stacking angle is the angle of the stacker plate 101 relative to the main body 103, which rotates around the fulcrum S2, which is located upstream in the document stacking unit 100 in the transport direction. In other words, the stacking angle is an angle formed by the change in the position of the stacker plate 101 from the initial state of the stacker plate 101. The initial state is the state before the initial rotation of the stacker plate 101 begins. In FIG. 2, the stacker plate 101 rotates in the direction a, which moves it closer to the feed roller 110, or in the direction b, which moves it away from the feed roller 110.

[0022] In this embodiment, the loading angle differs depending on the amount of documents loaded on document loading section 100. When the amount of documents loaded is large, the loading angle becomes small, and when the amount of documents loaded is small, the loading angle becomes large.

[0023] In this embodiment, the rotation of the loading plate 101 in the direction a may be referred to as "lift-up," and the rotation of the loading plate 101 in the direction b may be referred to as "lift-down."

[0024] 3 is a diagram showing the positional relationship between the light-shielding sensor 150 and the feed roller 110, as viewed from the direction III in FIG. 1. The document feeder 20 is provided with a light-shielding sensor 150 that detects the height of the feed roller 110 by the passage of a light-shielding member 131. The blanket 130 is also provided with a light-shielding member 131 that blocks light from the light-shielding sensor 150. The feed roller 110 and the light-shielding member 131 are configured to operate in conjunction with each other via the blanket 130. When the feed roller 110 rotates in the direction c or d, the light-shielding member 131 also rotates in the direction c or d.

[0025] <Controlling the setting position of the feed roller> 4 to 8, the control process of the feed roller 110 executed by the control unit 200 when feeding a document will be described. FIG. 4 is a flowchart showing the control process of the feed roller 110 when feeding a document. FIG. 5 is a flowchart showing the process during feeding at the first set position. FIG. 6 is a flowchart showing the process during feeding at the second set position. FIGS. 7(a) to 7(c) are diagrams showing the change in position of the feed roller 110 when the document load is large. FIGS. 8(a) to 8(c) are diagrams showing the change in position of the feed roller 110 when the document load is small. Here, FIG. 7(a) shows a state in which the feed roller 110 is at the initial position P0. FIG. 7(b) shows a state in which the feed roller 110 has been pushed up to the first set position P1. FIG. 7(c) shows a state in which the feed roller 110 has descended to position P11. FIG. 8(a) shows a state in which the feed roller 110 is at the initial position P0. Fig. 8(b) shows the state after the feed roller 110 has been pushed up to the second set position P2, and Fig. 8(c) shows the state after the feed roller 110 has been lowered to a position P11.

[0026] First, when an instruction to feed documents is received, the control unit 200 lifts up the stacking plate 101 from the state shown in FIG. 7(a) or 8(a) to start the initial feeding of documents (step 401). At this time, when the feed roller 110 comes into contact with the documents loaded on the document stacking unit 100, the blanket 130 having the feed roller 110 rotates in the direction c with the fulcrum S2 as the center of rotation, and gradually moves upward from the initial position P0. The initial position P0 is the initial position before the feed roller 110 starts to change its position.

[0027] Next, the control unit 200 measures the lift-up time from the initial position P0 until the delivery roller 110 passes the light-shielding sensor 150 (see FIG. 3) (step 402). In the document feeder 20 to which this embodiment is applied, the lift-up time differs depending on the amount of documents loaded. Here, the lift-up time is longer when the amount of documents loaded is small, as shown in FIG. 8(a), than when the amount of documents loaded is large, as shown in FIG. 7(a). Note that the lift-up time does not have to be the time until the documents pass the light-shielding sensor 150; for example, the lift-up time may be the time several seconds after the documents pass the light-shielding sensor 150.

[0028] Then, the control unit 200 measures the lift-up time and then calculates the loading angle from the lift-up time (step 403). Here, the longer the lift-up time, the larger the loading angle. Furthermore, the control unit 200 determines whether the loading angle exceeds θx (step 404).

[0029] This θx is an angle that is predetermined as a stacking angle that serves as a reference for determining the set position of the feed roller 110. When the stacking angle is smaller than θx, the angle at which the leading edge of the document stack contacts the guide member 140 becomes larger. In other words, it becomes closer to the perpendicular direction. On the other hand, when the stacking angle is smaller than θx, the angle at which the leading edge of the document stack contacts the guide member 140 becomes a direction along the guide member 140. In other words, it becomes closer to the parallel direction. Therefore, in order to maintain the function of handling documents relative to the guide member 140, the set position of the feed roller 110 is made different before and after this stacking angle θx.

[0030] If it is determined that the stacking angle does not exceed θx (NO in step 404), the control unit 200 stops the stacking plate 101 of the document stacking unit 100 at the first set position P1 (step 405), as shown in FIG. 7(b). In FIG. 7(b), the stacking angle is θ1 due to the lift-up of the stacking plate 101. This stacking angle θ1 causes the feed roller 110 to rotate in the direction c with the fulcrum S2 as the rotation center. Then, the sheet is pushed up from the initial position P0 shown in FIG. 7(a) to the first set position P1 shown in FIG. 7(b).

[0031] The first set position P1 is a position where, when the stacking angle is θ1, the leading edge of a stack of about 10 documents comes into contact with the guide member 140. In this embodiment, the feed roller 110 is pushed up to the first set position P1 by lifting up the stacking plate 101. However, the feed roller 110 may be stopped at the first set position by combining lifting up and lifting down depending on the position of a sensor, for example.

[0032] After stopping the stacking plate 101 at the first set position P1 in step 405, the control unit 200 stores the stacking angle as θ1 (step 406). Then, the control unit 200 proceeds to a subroutine that performs processing during feeding at the first set position (step 407). After completing the subroutine of step 407, the control unit 200 stops the stacking plate 101 of the document stacking unit 100 at the second set position P2 by a second lift-up (described later) (step 408). Then, the control unit 200 proceeds to a subroutine that performs processing during feeding at the second set position (step 409). After completing step 409, the control processing of the feed roller 110 when feeding the document is completed. The processing during feeding at the first set position will be described later using FIG. 5. The processing during feeding at the second set position will be described later using FIG. 6.

[0033] Returning to step 404, if it is determined that the stacking angle exceeds θx (YES in step 404), the control unit 200 stops the stacking plate 101 of the document stacking unit 100 at the second set position P2, as shown in FIG. 8(b) (step 408). In FIG. 8(b), the stacking angle becomes θ2, which is larger than θ1, due to the lift-up of the stacking plate 101. This stacking angle becomes θ2, and the feed roller 110 rotates in the direction c with the fulcrum S2 as the rotation center. Then, the document is pushed up from the initial position P0 shown in FIG. 8(a) to the second set position P2 shown in FIG. 8(b).

[0034] The second set position P2 is lower than the first set position P1. The second set position P2 is a position where the leading edge of a stack of about three documents contacts the guide member 140 when the stacking angle is θ2.

[0035] After stopping the loading plate 101 at the second set position P2 in step 408, the control unit 200 proceeds to a subroutine for performing processing during feeding at the second set position (step 409), and then ends the control processing.

[0036] Next, the processing during feeding at the first set position, which is a subroutine of step 407, will be described using the flowchart of FIG. 5. First, the control unit 200 feeds the first document from the state shown in FIG. 7(b) (step 501). By feeding the first document, the documents are fed one by one starting from the document in contact with the guide member 140, and approximately 10 documents that had been in contact with the guide member 140 are fed. When the feeding of the first document is completed, as shown in FIG. 7(c), the position of the feed roller 110 in contact with the document stack is lowered from the first set position P1 to a position P11 without changing the loading angle θ1 of the stacking plate 101. At this time, the feed roller 110 is lowering by its own weight.

[0037] Thereafter, the control unit 200 performs a first lift-up (step 502). The stacking plate 101 is lifted in the direction a (see FIG. 1), and the feed roller 110 is again pushed up from the position P11 of the feed roller 110 before the change to the first set position P1, which is the position of the feed roller 110 after the change. In this manner, the first lift-up is performed. This first lift-up causes the leading edge of the stack of approximately 10 documents to contact the guide member 140 again. The amount by which the stacking angle is changed by this first lift-up is defined as the first change amount.

[0038] Then, the number of sheets of originals sent out after the stacking angle has reached θ1 is measured (step 503). Next, the stacking angle is calculated from the number of sheets of originals sent out after the stacking angle has reached θ1 (step 504). If it is determined that the stacking angle exceeds θx (YES in step 505), the process during sending at the first set position is terminated.

[0039] If the stacking angle does not exceed θx (NO in step 505), the processes of steps 501 to 504 are performed again. In other words, if the stacking angle does not exceed θx, the sending out of the first document and the first lift-up are repeatedly performed.

[0040] Next, the processing during feeding at the second set position, which is a subroutine of step 409, will be described using the flowchart of FIG. 6. First, the control unit 200 feeds the second document from the state shown in FIG. 8(b) (step 601). By feeding the second document, the documents are fed one by one starting from the document in contact with the guide member 140, and approximately three documents that had been in contact with the guide member 140 are fed. When this feeding of the second document is completed, as shown in FIG. 8(c), the position of the feed roller 110 in contact with the document stack is lowered from the second set position P2 to position P11 without changing the stacking angle θ2. At this time, the feed roller 110 is lowering by its own weight.

[0041] Thereafter, the control unit 200 performs a second lift-up (step 602). The stacking plate 101 is lifted in the direction a (see FIG. 1), and the feed roller 110 is again pushed up from the position P11 of the feed roller 110 before the change to the second set position P2, which is the position of the feed roller 110 after the change. In this way, the second lift-up is performed. This second lift-up brings the leading edge of the stack of approximately three documents into contact with the guide member 140 again. The amount of change in the loading angle due to this second lift-up is referred to as a second change amount, which is set to be smaller than the first change amount.

[0042] Then, the control unit 200 determines whether the number of remaining original sheets is 0 or not (step 603). If the number of remaining original sheets is 0 (YES in step 603), the process of feeding at the second set position is terminated. If the number of remaining original sheets is not 0 (NO in step 603), the process of steps 601 to 602 is performed again. In other words, if the number of remaining original sheets is not 0, the feeding of the second original sheet and the second lift-up are repeatedly performed.

[0043] Here, the interval at which the feeding of the first document and the first lift-up described in FIG. 5 are repeated is defined as T1. The interval at which the feeding of the second document and the second lift-up described in FIG. 6 are repeated is defined as T2. In this case, the number of documents fed is smaller in the feeding of the second document than in the feeding of the first document, and the feeding process takes a shorter time. Furthermore, the amount of change in lift-up is smaller in the second lift-up than in the first lift-up, and the lift-up process takes a shorter time. Therefore, T2 is narrower than T1.

[0044] In FIG. 4, the process during feeding at the first set position (step 407) ends, and the stacking plate 101 of the document stacking unit 100 is stopped at the second set position P2 (step 408). In this case, the control unit 200 uses the second lift-up to push up the feed roller 110, which has become lower than the first set position P1 due to the feeding of the first document. That is, the control unit 200 pushes up the feed roller 110 to the second set position P2, which is lower than the first set position P1 at the start of feeding the first document. In this case, the second change amount due to the second lift-up, which is the change amount after the start of feeding the first document, is smaller than the first change amount due to the first lift-up, which is the change amount at the start of feeding the first document.

[0045] <Additional Notes> (((1))) a loading section for loading recording materials and for changing the loading angle depending on the loading amount of the recording materials; a feed roller for feeding out the recording material loaded in the loading section; a contact portion with which the leading edge of the recording material fed by the feed roller comes into contact; The set position of the delivery roller varies depending on the loading angle of the loading section based on the amount of recording materials loaded on the loading section. A recording material conveying device characterized by: (((2))) the stacking angle is an angle of a stacking plate that rotates around a fulcrum located upstream of the stacking portion in the recording material conveyance direction, relative to the main body of the stacking portion; The recording material conveying device according to (((1))), wherein the set position of the feed roller is set to a lower position when the stacking angle is large compared to when the stacking angle is small. (((3))) The recording material conveying device described in (((2))) is characterized in that the loading angle of the loading plate is detected by the lift-up time of the loading plate before the first feeding of the recording material starts. (((4))) the position of the delivery roller is lowered below the set position by delivering the recording material stacked in the stacking section; The feed roller, which has become lower than the set position, is pushed up by changing the loading angle of the loading section. The recording material conveying device according to (((1))) is characterized in that (((5))) When the feeding roller, which has become lower than the set position due to the feeding of the recording material, is pushed up by the change in the stacking angle, the feeding roller is pushed up to a position lower than the set position at the time of starting to feed the recording material. The recording material conveying device according to (((4))) is characterized in that (((6))) The recording material conveying device described in (((4))) is characterized in that the interval at which the feed roller, which has become lower than the set position, is pushed up due to a change in the loading angle is set narrower when the loading angle is large than when the loading angle is small. (((7))) The recording material conveying device described in (((4))) is characterized in that when the feed roller, which has become lower than the set position due to the feeding of the recording material, is pushed up by changing the stacking angle, when the stacking angle is large, the amount of change from the position of the feed roller before the change to the set position of the feed roller after the change is set to be smaller than when the stacking angle is small. (((8))) The recording material conveying device described in (((7))) is characterized in that the amount of change when starting to feed the recording material is smaller than the amount of change after starting to feed the recording material. (((9))) The recording material conveying device according to any one of ((1))) to (((8))), characterized in that the contact portion is contacted by the leading edge of the recording material sent out by the sending roller, regardless of the stacking angle.

[0046] According to the invention described in (((1))), even if the loading angle of the recording materials varies depending on the loading amount, the effect of pre-sorting the recording materials to be sent out can be stabilized. According to the invention described in (((2))), the front handling effect can be stabilized even when the loading angle is large. According to the invention described in (((3))), the loading angle of the loading plate can be detected even when the types of recording materials are different. According to the invention described in (((4))), even if the delivery roller becomes lower than the set position, it can be pushed up again to the set position where the forward separation effect is achieved. According to the invention described in (((5))), the set position can be adjusted each time according to the loading angle of the loading section. According to the invention described in (((6))), when the stacking angle is large, which is a state in which the front separation effect is difficult to stabilize, the set position of the delivery roller can be controlled more precisely. According to the invention described in (((7))), even if the loading angle is large, the position of the delivery roller when the recording material is being continuously conveyed can be adjusted to a position that stabilizes the front separation effect. According to the invention described in (((8))), the amount of change can be adjusted each time according to the loading angle of the loading section. According to the invention described in (((9))), even if the loading angle of the recording material varies, the effect of pre-sorting the recording material to be fed can be stabilized. [Explanation of symbols]

[0047] 20... document feeder, 100... document stacking section, 101... stacking plate, 110... feed roller, 200... control section

Claims

1. a loading section for loading recording materials and for changing the loading angle depending on the loading amount of the recording materials; a feed roller for feeding out the recording material loaded in the loading section; a contact portion with which the leading edge of the recording material fed by the feed roller comes into contact; The set position of the delivery roller varies depending on the loading angle of the loading section based on the amount of recording materials loaded on the loading section. A recording material conveying device characterized by:

2. the stacking angle is an angle of a stacking plate that rotates around a fulcrum located upstream of the stacking portion in the recording material conveyance direction, relative to the main body of the stacking portion; 2. The recording material conveying device according to claim 1, wherein the set position of the feed roller is set to a lower position when the stacking angle is large compared to when the stacking angle is small.

3. 3. The recording material transport device according to claim 2, wherein the loading angle of the loading plate is detected based on the lift-up time of the loading plate before the first feeding of the recording material is started.

4. the position of the delivery roller is lowered below the set position by delivering the recording material stacked in the stacking section; The feed roller, which has become lower than the set position, is pushed up by changing the loading angle of the loading section.

2. The recording material transport device according to claim 1.

5. When the feeding roller, which has become lower than the set position due to the feeding of the recording material, is pushed up by the change in the stacking angle, the feeding roller is pushed up to a position lower than the set position at the start of feeding of the recording material.

5. The recording material transport device according to claim 4.

6. 5. The recording material conveying device according to claim 4, wherein the interval at which the feed roller, which has become lower than the set position, is pushed up due to a change in the stacking angle is set narrower when the stacking angle is large than when the stacking angle is small.

7. 5. A recording material conveying device according to claim 4, wherein when the feed roller, which has become lower than the set position due to the feeding of the recording material, is pushed up by changing the stacking angle, when the stacking angle is large, the amount of change from the position of the feed roller before the change to the set position of the feed roller after the change is set smaller than when the stacking angle is small.

8. 8. The recording material conveying device according to claim 7, wherein the amount of change when the feeding of the recording material starts is smaller than the amount of change after the feeding of the recording material starts.

9. 2. The recording material conveying device according to claim 1, wherein the leading edge of the recording material fed by the feed roller comes into contact with the contact portion regardless of the stacking angle.

Images