Paper storage device and paper processing device

By providing sensors above the mounting table of the paper storage device and opposite to the front-end position restriction guide, the detection light propagates between the first and second positions, the problem that the sensor is difficult to accurately detect whether the banknotes occupy a full storage space, and the detection accuracy is improved to prevent banknotes from being blocked.

CN113382942BActive Publication Date: 2025-06-06FUJITSU FRONTECH LTD
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Patent Information

Application Number
CN201980090466.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-03-15
Publication Date
2025-06-06
Estimated Expiration
2039-03-15

AI Technical Summary

Technical Problem

In existing paper storage devices, it is difficult for sensors to accurately detect whether the banknotes occupy full accumulation space, especially when the banknotes are leaning against or bulging, it is easy to misjudged that there is no sufficient space, resulting in bad situations such as blockage of the banknotes.

Method used

A sensor is adopted to irradiate the detection light on the upper side of the mounting table and the opposite side of the front-end position restriction guide, and the detection light propagates between the first position and the second position. The first position is located opposite the front-end position restriction guide, and the second position is lower than the first position, and is located opposite the banknote on the mounting table and the front-end position restriction guide.

Benefits of technology

It improves the detection accuracy of whether the storage space of paper is present, reduces misjudgment, prevents banknotes from being blocked, and ensures the normal operation of the storage device.

✦ Generated by Eureka AI based on patent content.

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Abstract

A paper storage device (1) includes: a loading platform (10) on which paper money (B) as an example of paper is loaded; a front end position limiting guide (20) for limiting the position of the front end of the paper money (B) in the direction (D) in which the paper money (B) enters the loading platform (10); and a sensor (30) for detecting the presence or absence of a storage space (S) for the paper money (B) above the loading platform (10). The sensor (30) detects the presence or absence of the storage space (S) by irradiating a detection light (L) between a first position (P1) and a second position (P2), the first position (P1) being located on the opposite side of the paper money (B) on the loading platform (10) across the front end position limiting guide (20), and the second position (P2) being located below the first position (P1) and on the opposite side of the paper money (B) on the loading platform (10) across the front end position limiting guide (20).
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Description

Technical Field

[0001] The present invention relates to a paper storage device for storing paper and a paper processing device equipped with the paper storage device. Background Art

[0002] Conventionally, paper processing devices such as ATMs have paper storage devices for storing paper such as banknotes, checks, securities, etc. The paper storage device is, for example, a removable banknote storage box. When the paper storage device is a banknote storage box, the paper processing device is provided with banknote storage boxes, for example, according to the currency type.

[0003] In such a paper storage device, the following sensor is sometimes used: the sensor is located between a position above the placement table on which the banknotes are placed and a position below the transport unit that transports the banknotes to the placement table, and irradiates detection light for determining whether there is storage space based on whether it is blocked by the banknotes (for example, refer to patent document 1).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 4877124 Summary of the invention

[0007] Problems to be solved by the invention

[0008] Figure 6 It is a left side view showing the internal structure of the paper sheet storage device 201 of the reference technology.

[0009] The paper sheet storage device 201 includes a placement table 210 , a leading end position regulating guide unit 220 , a sensor 230 , and a conveying unit 240 .

[0010] The placement table 210 is disposed so as to be able to be raised and lowered, and the banknotes B are placed thereon.

[0011] The leading end position regulating guide 220 regulates the position of the leading end of the banknote B in the entry direction D onto the entry placement table 210 .

[0012] The sensor 230 detects the presence or absence of a storage space S (indicated by a two-dot chain line) for the banknotes B above the mounting table 210. The sensor 230 includes, for example, an irradiator that irradiates detection light L horizontally and a light receiver that receives the detection light L.

[0013] The transport unit 240 includes a plurality of rollers and impellers, and transports the banknotes B along the entry direction D onto the mounting table 210 .

[0014] In the above-mentioned paper storage device 201, Figure 6 As shown in FIG. 1 , if the banknotes B lean against the leading end position limiting guide 220, even though there is sufficient storage space S, the horizontal detection light L is blocked by the banknotes B, similarly to the case where there are dozens to hundreds of extra banknotes B. As a result, the sensor 230 detects that there is insufficient storage space S. In addition, when the banknotes B are bent in a raised manner, similarly, even though there is sufficient storage space S, the sensor 230 may detect that there is insufficient storage space S.

[0015] In addition, as described above, as a sensor that irradiates detection light between a position above the placement table on which the banknotes are placed and a position below the transport unit that transports the banknotes to the placement table, since a plurality of banknotes are placed against the placement table, Figure 6 The front end position restriction guide 220 shown in the figure cannot detect that there is no accumulation space on the front end side of the banknote. As a result, a problem such as a jam of the banknote occurs.

[0016] An object of the present invention is to provide a paper sheet storage device and a paper sheet processing device capable of improving the detection accuracy of the presence or absence of a storage space for paper sheets.

[0017] Means for solving problems

[0018] In one embodiment, a paper storage device includes: a loading platform for loading paper; a front end position limiting guide that limits the position of the front end of the paper in the direction in which the paper enters the loading platform; and a sensor that detects the presence or absence of storage space for the paper above the loading platform, the sensor detecting the presence or absence of the storage space by using detection light irradiated between a first position and a second position, wherein the first position is located on the opposite side of the paper on the loading platform across the front end position limiting guide, and the second position is lower than the first position and located on the opposite side of the paper on the loading platform across the front end position limiting guide.

[0019] In another embodiment, a paper processing device includes: a conveying path for conveying paper; and a paper storage device for storing the paper conveyed on the conveying path, the paper storage device includes: a loading platform for placing paper; a front end position limiting guide for limiting the position of the front end of the paper in the direction in which the paper enters the loading platform; and a sensor for detecting the presence or absence of storage space for the paper above the loading platform, the sensor detecting the presence or absence of the storage space by using detection light irradiated between a first position and a second position, wherein the first position is located on the opposite side of the paper on the loading platform across the front end position limiting guide, and the second position is lower than the first position and located on the opposite side of the paper on the loading platform across the front end position limiting guide.

[0020] Effects of the Invention

[0021] According to the above aspect, it is possible to improve the accuracy of detecting the presence or absence of the paper storage space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a left side view showing the internal structure of the paper sheet processing apparatus according to the embodiment.

[0023] Figure 2 It is a left side view showing the internal structure of the paper sheet storage device according to the embodiment.

[0024] Figure 3 It is a plan view showing the internal structure of the paper sheet storage device according to the embodiment.

[0025] Figure 4A This is an explanatory diagram (part 1) for explaining detection of the presence or absence of storage space in the paper sheet storage device according to the embodiment.

[0026] Figure 4B This is an explanatory diagram (part 2) for explaining detection of the presence or absence of storage space in the paper sheet storage device according to the embodiment.

[0027] Figure 4C This is an explanatory diagram (part 3) for explaining detection of the presence or absence of storage space in the paper sheet storage device according to the embodiment.

[0028] Figure 5A This is an explanatory diagram (part 1) for explaining the processing of the paper sheet processing apparatus according to the embodiment.

[0029] Figure 5B This is an explanatory diagram (part 2) for explaining the processing of the paper sheet processing apparatus according to the embodiment.

[0030] Figure 5CThis is an explanatory diagram (part 3) for explaining the processing of the paper sheet processing apparatus according to the embodiment.

[0031] Figure 5D This is an explanatory diagram (part 4) for explaining the processing of the paper sheet processing apparatus according to the embodiment.

[0032] Figure 5E This is an explanatory diagram (part 5) for explaining the processing of the paper sheet processing apparatus according to the embodiment.

[0033] Figure 6 This is a left side view showing the internal structure of a paper sheet storage device of the reference technology. DETAILED DESCRIPTION

[0034] Hereinafter, a paper sheet storage device and a paper sheet processing device according to an embodiment will be described with reference to the drawings.

[0035] Figure 1 It is a left side view showing the internal structure of the paper sheet processing apparatus 100 according to the embodiment.

[0036] like Figure 1 As shown, the paper sheet processing apparatus 100 includes a plurality of paper sheet storage devices 1, a deposit and withdrawal unit 110, a separation unit 120, a verification unit 130, a temporary storage unit 140, a rejection unit 150, and a conveyance path 160. The paper sheet processing apparatus 100 is, for example, an automatic teller machine (ATM).

[0037] The deposit and withdrawal unit 110 deposits and withdraws banknotes B as an example of paper. In addition, the paper may be other paper such as checks or securities.

[0038] The separator 120 moves the banknotes B up and down between an upper position for receiving the banknotes B from the deposit and withdrawal unit 110 and a lower position for feeding the banknotes B toward the identification unit 130. The separator 120 temporarily stores the banknotes B deposited from the deposit and withdrawal unit 110.

[0039] The identification unit 130 identifies the banknotes B conveyed from the separation unit 120. For example, the identification unit 130 determines whether the banknotes B are normal or abnormal based on the authenticity, thickness, length, deterioration state, etc. of the banknotes B.

[0040] The temporary storage unit 140 temporarily stores the banknotes B identified by the identification unit 130 .

[0041] The reject unit 150 stores the banknotes B that are not to be returned to the customer, among the banknotes B determined to be abnormal by the identification unit 130 .

[0042] The conveyance path 160 is a conveyance path for conveying banknotes B between the plurality of paper sheet storage devices 1, the deposit and withdrawal unit 110, the separation unit 120, the identification unit 130, the temporary storage unit 140, and the rejection unit 150. Conveying members such as conveyance rollers for conveying banknotes B are arranged on the conveyance path 160.

[0043] Figure 2 It is a left side view showing the internal structure of the paper sheet storage device 1 .

[0044] Figure 3 It is a plan view showing the internal structure of the paper sheet storage device 1 .

[0045] like Figure 2 As shown, the paper sheet storage device 1 includes a placement table 10, a front end position limiting guide 20, a sensor 30, a conveying unit 40, a rear end position limiting guide 50, a spacer 60, an opening and closing door 70, and a pressing unit 80. Figure 3 In the figure, the rear end position restriction guide 50, the spacer 60, the opening and closing door 70, and the pressing portion 80 are omitted.

[0046] The paper sheet storage device 1 is capable of storing Figure 1 The paper sheet storage cassette shown is detachably mounted on the paper sheet processing apparatus 100. In addition, the paper sheet storage apparatus 1 may be integrally arranged on the paper sheet processing apparatus 100 in a non-detachable manner.

[0047] The mounting table 10 is configured to be able to be raised and lowered, for example. Figure 2 and Figure 3 The height H0 shown, Figure 4A The height H1 shown, Figure 4B and Figure 4C The height H2 shown is where the banknotes B are placed.

[0048] The leading end position regulating guide 20 is located on the downstream side of the direction D in which the banknotes B enter the mounting platform 10 ( Figure 2 The front end of the banknote B is limited by the left side of the front end position limiting guide 20. The front end position limiting guide 20 has a concave-convex surface 21 formed on the contact surface with the banknote B. The concave-convex surface 21 is to prevent the banknote B conveyed by the conveying unit 40 from entering the front end position limiting guide 20 and contacting the banknote B. Figure 4A The convex-concave surface 21 is provided to fill the gaps between the plurality of banknotes B on the mounting table 10 shown. The concave-convex surface 21 is, for example, a serrated surface.

[0049] The sensor 30 detects the presence or absence of a storage space S (indicated by a two-dot chain line) for the banknotes B above the mounting table 10. The sensor 30 detects the presence or absence of the storage space S by irradiating a detection light L between a first position P1 and a second position P2, wherein the first position P1 is located on the opposite side of the banknotes B on the mounting table 10 across the front end position limiting guide 20 ( Figure 2 The second position P2 is located below the first position P1 and on the opposite side of the banknote B on the mounting table 10 and the front end position limiting guide 20 ( Figure 2 The sensor 30 includes, for example, an irradiating portion disposed at one of the first position P1 and the second position P2, for irradiating the detection light L; and a light receiving portion disposed at the other of the first position P1 and the second position P2, for receiving the detection light L. The first position P1 may be above the upper end of the storage space S (for example, the lower end of the transport roller 44). In addition, the detection light L may be irradiated on the front end side of the banknotes B on the stage 10 in a manner passing through the upper part of the storage space S. In addition, the direction of the detection light L (sensor 30) is set so as to ensure sufficient space for the storage space S to the extent that the banknotes B are not blocked.

[0050] The conveying section 40 includes conveying rollers 41 to 44 and an impeller 45. Figure 3 As shown, two conveying rollers 41 to 44 are arranged in each of the width direction W of the banknote B perpendicular to the feeding direction D. In addition, four impellers 45 are arranged in the width direction W of the banknote B.

[0051] When the paper sheet storage device 1 stores the paper bills B during the deposit of the paper sheet processing device 100, the transport unit 40 Figure 1 The banknotes B conveyed by the conveyance path 160 are conveyed onto the mounting table 10 . When the paper sheet storage device 1 delivers the banknotes B during the withdrawal of the paper sheet handling device 100 , the conveyance unit 40 conveys the banknotes B on the mounting table 10 onto the conveyance path 160 .

[0052] The conveyance roller 41 is disposed so as to face the conveyance roller 42 as a driving roller, and is a driven roller that rotates in accordance with the rotation of the conveyance roller 42 .

[0053] The conveying roller 42 is a driving roller that is rotated by the same driving source as the conveying roller 44. A transmission belt (not shown) is mounted on the central axis of the conveying roller 42 and the central axis of the conveying roller 44. Figure 3 As shown, the two transport rollers 42 each include two rollers adjacent to each other in the width direction W of the banknotes B which is perpendicular to the feeding direction D of the banknotes B. The outer rollers in the width direction W are rollers for separating the banknotes B when feeding the banknotes B, for example.

[0054] The conveyance roller 43 is arranged below the conveyance roller 41. The conveyance roller 43 is a driven roller that is arranged to face the conveyance roller 42 and rotates as the conveyance roller 42 rotates, similarly to the conveyance roller 41.

[0055] The conveying roller 44 is a driving roller that rotates by being driven by the same driving source as the conveying roller 42. The conveying roller 44 is configured to be able to swing relative to the central axis of the conveying roller 42, and is urged downward by a urging mechanism (not shown). When the paper sheet storage device 1 delivers the banknotes B, the conveying roller 44 delivers the banknotes B in a state where the banknotes B overcome the force of the urging mechanism and are pressed upward and rise.

[0056] The impeller 45 is disposed below the conveying roller 42. The impeller 45 knocks down the rear end of the banknote B conveyed from between the conveying rollers 42 and 43 toward the mounting table 10 with a plurality of blades, thereby preventing the following banknotes from colliding.

[0057] The rear end position limiting guide 50 is arranged to face the front end position limiting guide 20, and limits the position of the rear end of the banknote B. The rear end position limiting guide 50 has a transport guide 51. The transport guide 51 extends upward to guide the banknote B transported by the transport unit 40. The transport guide 51 is provided with a through hole or a not-shown cutout for avoiding interference with the transport rollers 41 and 43.

[0058] The spacer 60 is disposed between the opening and closing door 70 and the leading end position regulating guide 20 , and regulates the position of the leading end position regulating guide 20 in accordance with the size of the banknotes B.

[0059] The opening and closing door 70 is opened and closed so as to open the inside of the paper sheet storage device 1 .

[0060] The pressing portion 80 is, for example, arranged to be swingable relative to the central axis of the conveying roller 42, and is lowered to the position where the conveying roller 42 is conveyed by its own weight. Figure 2 When the loading platform 10 rises, the pressing portion 80 is pushed up by the banknote B on the loading platform 10. When the banknote B is transported from the transporting portion 40 to the loading platform 10, the pressing portion 80 also functions as a guide for preventing the banknote B from entering the upper side of the front end position limiting guide 20. In addition, the pressing portion 80 is arranged at a position in the width direction W of the banknote B that does not interfere with the detection light L, or has a through hole for allowing the detection light L to pass.

[0061] Figure 4A to Figure 4C It is an explanatory diagram for explaining detection of the presence or absence of the storage space S in the paper sheet storage device 1 according to the embodiment.

[0062] like Figure 4AAs shown, when the banknotes B are transported to the mounting table 10 along the entry direction D by the transport unit 40 , the banknotes B come into contact with the concave-convex surface 21 of the leading end position regulating guide 20 and are mounted on the mounting table 10 .

[0063] like Figure 4B As shown, when the banknote B on the mounting table 10 slightly leans on the front end position limiting guide 20, or when the banknote B is placed on the mounting table 10 in a state of being bent in a raised manner, although not shown in the figure, Figure 6 Unlike the sensor 230 of the paper sheet storage device 201 of the reference technique shown, the detection light L of the sensor 30 is not blocked by the banknotes B, and the presence of a sufficient storage space S is detected.

[0064] On the other hand, Figure 4C As shown, if the banknote B leaning against the front end position limiting guide 20 lifts the pressing part 80, and the front end of the banknote B reaches a position above the lower end of the conveying roller 44, which is the upper end position of the accumulation space S, the sensor 30 detects that there is not enough accumulation space S. As a result, the conveying part 40, Figure 1 The banknotes B are transported onto the mounting table 10 by the transport path 160 shown. Therefore, it is possible to prevent the subsequent banknotes B from not being placed on the mounting table 10 due to the banknotes B lifted by the pressing unit 80, thereby preventing the transport unit 40 from being jammed.

[0065] Figure 5A 5F to 5F are explanatory diagrams for explaining the processing of the paper sheet processing apparatus 100 according to the embodiment.

[0066] like Figure 5A As shown, for example, a plurality of banknotes B1 inserted into the deposit and withdrawal unit 110 by a customer are temporarily stored in the separation unit 120, and then lowered in the separation unit 120 and transported one by one to the identification unit 130. When the banknotes B1 are transported one by one from the separation unit 120, the number of banknotes can be counted. Then, the banknotes B1 are identified by the identification unit 130 and transported to the temporary storage unit 140 (banknotes B2).

[0067] When the banknote B2 conveyed to the temporary storage unit 140 is judged by the identification unit 130 to be abnormal and to be returned, Figure 5B As shown, the banknotes are transported to the deposit and withdrawal unit 110 (banknote B3).

[0068] If the banknote B2 conveyed to the temporary storage unit 140 is determined to be normal by the identification unit 130, Figure 5C As shown, the banknotes B are conveyed to the separation unit 120 again, and conveyed to the paper sheet storage device 1 (banknotes B4 and B5) corresponding to the denomination through the identification unit 130. In addition, the banknotes determined as abnormal by the identification unit 130 are conveyed to the rejection unit 150.

[0069] like Figure 5D As shown, when dispensing banknotes B, banknotes B4 and B5 fed from the paper sheet storage device 1 are conveyed to the temporary storage unit 140 (banknotes B6) by the identification unit 130. Banknotes judged as abnormal by the identification unit 130 are conveyed to the rejection unit 150.

[0070] like Figure 5E As shown, the banknote B6 conveyed to the temporary storage unit 140 is conveyed to the deposit and withdrawal unit 110 (banknote B7) and withdrawn.

[0071] In the present embodiment described above, the paper sheet storage device 1 includes: a loading platform 10 on which a banknote B as an example of paper is loaded; a front end position limiting guide 20 for limiting the position of the front end of the banknote B in the entry direction D onto the loading platform 10; and a sensor 30 for detecting the presence or absence of a storage space S for the banknotes B above the loading platform 10. The sensor 30 detects the presence or absence of the storage space S using a detection light L irradiated between a first position P1 located on the opposite side of the banknotes B on the loading platform 10 across the front end position limiting guide 20 and a second position P2 located below the first position P1 and on the opposite side of the banknotes B on the loading platform 10 across the front end position limiting guide 20.

[0072] Thus, the detection light L is irradiated between the first position P1 located on the opposite side of the banknote B on the mounting table 10 across the front end position limiting guide 20 and the second position P2 obliquely below the first position P1. Figure 4B As shown, when the banknotes B on the mounting table 10 are leaning against the leading end position limiting guide 20 and there is sufficient storage space S, Figure 6 Unlike the sensor 230 of the paper sheet storage device 201 of the reference technology shown in the figure, which irradiates the detection light L horizontally, it is possible to suppress the erroneous detection of insufficient storage space S. In addition, since the first position P1 of the sensor 30 is located on the opposite side of the banknote B on the mounting table 10 across the front end position limiting guide 20, it is possible to detect that there is insufficient storage space S on the front end side of the banknote B due to the banknote B leaning on the front end position limiting guide 20, etc., compared with the case where the first position P1 is located above the mounting table 10, it is possible to suppress the occurrence of undesirable conditions such as jams.

[0073] Therefore, according to the present embodiment, the accuracy of detecting the presence or absence of the accumulation space S for the banknotes B can be improved.

[0074] In addition, in this embodiment, the first position P1 is above the storage space S. Therefore, Figure 4BAs shown, when the banknotes B on the mounting table 10 lean against the leading end position regulating guide 20 and there is sufficient accumulation space S, it is possible to further suppress erroneous detection that there is insufficient accumulation space S.

[0075] In addition, in the present embodiment, the detection light L is irradiated on the leading end side of the banknote B on the mounting table 10 so as to pass above the accumulation space S. Thus, it is possible to more reliably detect a situation where there is not enough accumulation space S on the leading end side of the banknote B due to the banknote B leaning on the leading end position limiting guide 20 or the like.

[0076] In addition, the present invention is not limited to the above-mentioned embodiments, and the constituent elements can be deformed and concretized within the scope of the purport of the implementation stage. In addition, various inventions can be formed by appropriate combinations of multiple constituent elements disclosed in the embodiments. For example, all constituent elements shown in the embodiments can also be appropriately combined. In this way, various deformations and applications can be carried out within the scope of the purport of the invention.

[0077] Description of symbols

[0078] 1 Paper storage device

[0079] 10. Loading table

[0080] 20 Front end position limit guide

[0081] 21 Concave and convex surface

[0082] 30 Sensors

[0083] 40 Transportation Department

[0084] 41~44 conveying roller

[0085] 45 Impeller

[0086] 50 Rear end position limit guide

[0087] 51 Transport guide

[0088] 60 Spacer

[0089] 70 Open and close doors

[0090] 80 Pressing part

[0091] 100 Paper handling device

[0092] 110 Cash In / Out Department

[0093] 120 Separation Unit

[0094] 130 Identification Department

[0095] 140 Temporary Reserved Department

[0096] 150 Rejection Department

[0097] 160 Transport Path

[0098] B Banknotes

[0099] D Entry direction

[0100] L Detection light

[0101] P1 First position

[0102] P2 Second position

[0103] S Storage Space

[0104] W Width direction

Claims

1. A paper storage device, It is characterized in that The paper storage device comprises: A loading platform for loading paper; a front end position limiting guide that limits the position of the front end of the paper in a direction in which the paper enters the mounting table; a sensor for detecting the presence or absence of a storage space for the paper above the placement table; a conveying roller configured to deliver the paper accumulated in the accumulation space; as well as a pressing portion that prevents the paper from entering an upper side of the leading end position limiting guide, The sensor detects the presence or absence of the storage space by using detection light irradiated between a first position and a second position, wherein the first position is located on the opposite side of the paper on the mounting table across the front end position limiting guide, and the second position is located below the first position and on the opposite side of the paper on the mounting table across the front end position limiting guide. The upper end position of the storage space is the lower end of the conveying roller. The first position is above the storage space, The detection light is irradiated so that the leading end side of the paper on the mounting table passes above the storage space, The first position and the second position are arranged so that when the front end of the paper leans against the front end position limiting guide but has not reached the position to lift the pressing portion, the detection light is not blocked by the paper, and the sensor detects that there is sufficient accumulation space; when the front end of the paper reaches above the accumulation space and lifts the pressing portion, the front end of the paper reaches above the upper end position of the accumulation space, and the sensor detects that there is insufficient accumulation space.

2. A paper processing device, It is characterized in that The paper sheet processing device comprises: a transport path for transporting paper; and a paper storage device for storing the paper conveyed on the conveying path, The paper storage device comprises: A loading platform for loading paper; a front end position limiting guide that limits the position of the front end of the paper in a direction in which the paper enters the mounting table; a sensor for detecting the presence or absence of a storage space for the paper above the placement table; as well as a conveying roller configured to deliver the paper accumulated in the accumulation space; as well as a pressing portion that prevents the paper from entering an upper side of the leading end position limiting guide, The sensor detects the presence or absence of the storage space by using detection light irradiated between a first position and a second position, wherein the first position is located on the opposite side of the paper on the mounting table across the front end position limiting guide, and the second position is located below the first position and on the opposite side of the paper on the mounting table across the front end position limiting guide. The upper end position of the storage space is the lower end of the conveying roller. The first position is above the storage space, The detection light is irradiated so that the leading end side of the paper on the mounting table passes above the storage space, The first position and the second position are arranged so that when the front end of the paper leans against the front end position limiting guide but has not reached the position to lift the pressing portion, the detection light is not blocked by the paper, and the sensor detects that there is sufficient accumulation space; when the front end of the paper reaches above the accumulation space and lifts the pressing portion, the front end of the paper reaches above the upper end position of the accumulation space, and the sensor detects that there is insufficient accumulation space.

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