JP2018203485A - Sheet taking-in device and sheet carrying device - Google Patents

Abstract

To provide a sheet taking-in device and a sheet carrying device capable of carrying a large amount of sheets efficiently.SOLUTION: In a sheet carrying device, a first placing table 2 and a second placing table 4 are arranged and one paper feeding member is provided for the two placing tables. The paper feeding member is configured with: one pickup roller 7 provided between the first placing table 2 and the second placing table 4; and a sheet separation part 12 provided downstream in a carrying direction. The sheet separation part 12 is configured with: one first roller 10 rotatable forward and reversely; and one second roller 11 rotatable forward and reversely. The pickup roller 7 swings so as to push a sheet against the first placing table 2 and the second placing table 4 and delivers the sheet to the sheet separation part 12. The sheet separation part 12 controls the rotational direction of the first roller 10 and the second roller 11 depending on the placing table to which a sheet is delivered, and is swung so as to give proper separation of sheets by suitably switching over the roles of a paper feeding function and a separation function.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an image reading apparatus such as a scanner, or a sheet take-in apparatus mounted on an image forming apparatus such as a printer, a facsimile, or a copying machine, a sheet conveying apparatus provided with the sheet take-in apparatus, and the sheet The present invention relates to an image reading apparatus including a transport device.

  In an image reading apparatus provided with a sheet conveying device, a sheet is fed from one placing table on which a sheet material serving as a document is placed via a pickup roller, and the fed sheet includes a first roller and a first roller. The sheets are separated one by one by two rollers and fed to the conveyance path. The sheet fed to the transport path is transported to the downstream side by a pair of transport rollers, and after images on both sides are read by a pair of upper and lower reading sensors, the sheet is discharged to a paper discharge table by a pair of paper discharge rollers.

  However, in response to a user's desire to efficiently read a large number of sheets, in an image reading apparatus including the sheet conveying apparatus having the above-described configuration, the maximum number of sheet materials that can be placed on the placing table is defined. If you want to place a sheet bundle that exceeds this maximum number of sheets, divide it into sheet bundles that are less than the maximum number of sheets, and after all the sheet bundles placed on the placement table have been conveyed, place the next sheet bundle and resume conveyance. Therefore, a cumbersome operation of waiting for the completion of conveyance is required, and it is difficult to satisfy the request.

  In addition, in order to satisfy the request, the user may add the sheet bundle during the conveying operation without waiting for the completion of conveyance of the sheet bundle. There is concern that interference with the sheet being conveyed may cause problems such as breakage of the sheet material due to jamming and simultaneous conveyance of a plurality of sheets.

  In view of this, an image reading apparatus that satisfies the above-described requirement by placing a plurality of placement tables on a placement table different from the placement table being conveyed can be considered. As an example, there is an image reading apparatus as disclosed in Patent Document 1.

  In addition, as a means for efficiently reading a large number of sheets, it is conceivable that a plurality of image reading apparatuses are prepared and the user's request is satisfied by distributing and efficiently reading a sheet bundle.

JP 2010-166389 A

  In the case of an image reading apparatus having a conventional sheet conveying apparatus, the mounting table is positioned on the front side and the back side of the apparatus, and the sheet conveying direction is different. Therefore, the user changes the direction of the sheet when placing the sheet. It is necessary to place it, which causes troublesome work and reduces efficiency. In addition, there is a problem that a sheet separation unit is required for each mounting table and the configuration becomes complicated.

  In addition, in order to prepare a plurality of image reading devices and perform reading efficiently in a distributed manner, a plurality of image reading devices and an external control device such as a PC for controlling each of the image reading devices are necessary and expensive. It becomes a configuration. Also, when one sheet bundle is divided into a plurality of sheet bundles and distributed and read by separate image reading devices, a series of image data files or image data obtained by separately combining image data files obtained as a result of reading Troublesome work to make a file group occurs.

  An object of the present invention is to provide a sheet take-in apparatus and a sheet conveying apparatus that can efficiently convey a large amount.

  The sheet take-in device of the present invention includes a first placement table on which a sheet bundle is placed, a second placement table on which a sheet bundle is placed, the first placement table, and the second placement table. A pick roller that reciprocally moves between the pick roller and a control unit that controls rotational driving of the pick roller, and the sheet stack on the first mount table is mounted on the first mount table. While the pick roller is operated from the surface side and the rotation direction of the pick roller is controlled to rotate in the first direction by the control means, the sheet is taken in from the lowest position of the sheet bundle, while the second mounting table For the upper sheet bundle, the pick roller acts on the uppermost surface of the sheet bundle, and the control means controls the rotation direction of the pick roller in the direction opposite to the first direction. Loading sheets from the top And performing.

  Further, in the sheet conveying apparatus according to one aspect of the present invention, the first mounting table on which the sheet bundle composed of a plurality of sheets is mounted and the second mounting table are similarly disposed, and the mounting is performed on each mounting table. A pick-up roller which can be rotated in the forward / reverse direction, a first roller which can be rotated in the forward / reverse direction, and a forward / reverse roller which is located on the downstream side thereof. A sheet separating portion composed of a rotatable second separation roller is disposed. There is provided control means for swinging the pickup roller and pressing the sheet placed on the first placing table or the second placing table. Also, a control means for switching the rotation direction of the first roller and the second roller constituting the sheet separating unit and switching the sheet feeding function and the separating function, the first roller and the second roller of the sheet separating unit, And a swing control means for positioning the nip portion with the roller on the sheet conveyance path.

  The present invention solves the above-mentioned problem that a large number of sheets cannot be efficiently conveyed, and by providing two loading tables in the sheet feeding unit, even while a sheet is being conveyed from one loading table, the other If a sheet bundle is not placed on the placement table, a new sheet bundle can be placed, eliminating the need for the user to wait for the transport of all placed sheets to be completed, and adding the sheet bundle efficiently The sheet can be placed and conveyed efficiently.

  In addition, by reducing the number of first rollers and second rollers in the sheet separation unit and simplifying the configuration, it is possible to increase the sheet feeding stability by providing an appropriate sheet separation function by performing swing control. Become.

  In addition, by automatically rearranging the images read according to the loading table to be fed and storing the image data, it is the same as the order of the loaded sheet bundle without rearranging the image data by the user. Image data can be saved in order.

1 is a side cross-sectional view of a sheet conveying apparatus according to a first embodiment of the present invention. 2 is a block diagram showing a control system of the sheet conveying apparatus according to the first embodiment of the present invention. FIG. 3 is a control flowchart of the sheet conveying apparatus according to the first embodiment of the present invention. FIG. 6 is a side sectional view of a sheet conveying apparatus according to a second embodiment of the present invention. 10 is a control flowchart of the sheet conveying apparatus according to the second embodiment of the present invention.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. Absent.

Example 1
FIG. 1 is a side view of an image reading apparatus according to the first embodiment, and FIG. 2 is a block diagram showing a control system of the image reading apparatus.

  In FIG. 1, reference numeral 1 denotes an image reading apparatus. Reference numeral 2 denotes a first placement table on which a bundle (hereinafter referred to as a sheet bundle) 3 of sheets (for example, originals, recording paper, etc.) sent out by the image reading apparatus 1 is placed. The first placing table 2 is a placing table on which the sheet bundle 3 is placed and placed in a state where the overlapping direction of the sheets 3a is oriented in a substantially vertical direction. The first mounting table 2 is provided with a document detection sensor 13 that detects the presence or absence of the sheet bundle 3.

  Reference numeral 4 denotes a second placement table on which the sheet bundle 5 sent out by the image reading apparatus 1 is placed. Unlike the first mounting table 2, the second mounting table 4 is at a position where the downstream side of the second mounting table 4 in the sheet conveying direction is lower than the upstream side. That is, it is a mounting table on which the front end of the sheet bundle 5 to be mounted is mounted in a downward direction. The second mounting table 4 is provided with a document detection sensor 14 that detects the presence or absence of the sheet bundle 5.

  When a vertical distance L1 between the first mounting table 2 and the second mounting table 4 on the downstream side in the sheet conveying direction and a vertical distance L2 on the upstream side in the sheet conveying direction, a relationship of L1 <L2 is established. Thereby, the opening area on the upstream side in the sheet conveyance direction of the first mounting table 2 is widened, and the user can easily mount the sheet bundle 3 on the first mounting table 2.

  Reference numeral 7 denotes a pickup roller that sends out the sheet 3 a mounted on the first mounting table 2 or the sheet 5 a mounted on the second mounting table 4 from the mounting table 2 or 4. The pickup roller 7 is supported by a support member 50 so as to be movable in the direction shown in FIG. The pickup roller 7 is moved downward, brought into contact with the uppermost sheet 3a mounted on the first mounting table 2, and rotated in the counterclockwise direction in the figure to send out the sheet 3a (FIG. 1). (C)). Further, the pickup roller 7 is moved upward, brought into contact with the lowermost sheet 5a mounted on the second mounting table 4, and rotated in the clockwise direction in the figure to send out the sheet 5a (FIG. 1). (B)).

  When the pickup roller 7 is brought into contact with the sheet 5a, the sheet bundle 5 is pressed by an urging means using a pressing plate 6 in order to bring the pickup roller 7 into contact with an appropriate pressing pressure. Various means can be considered for urging means for urging the pressing plate 6, such as those using the elasticity of the coil spring 15 and those using power such as a motor. It is not limited.

  The sheet separating unit 12 includes a first roller 10 and a second roller 11. Then, the sheet separating action can be exerted between the first roller 10 and the second roller 11 with respect to the sheet fed from the two mounting tables 2 and 4. The first roller 10 and the second roller 11 can rotate forward and backward. When the sheet is sent from the first mounting table 2, the rotation direction is controlled so that the first roller 10 can perform the sheet feeding operation and the second roller 11 can perform the separation operation (FIG. 1C). ). On the other hand, when the sheet is sent out from the second mounting table 4, the rotation direction is controlled so that the sheet feeding operation can be performed by the second roller 11 and the separation operation can be performed by the first roller 10 (FIG. 1 ( b)). In other words, the rotation direction of the first roller 10 and the second roller 11 is controlled in accordance with the mounting table on which the sheet is being sent, and the control of switching the roles of the paper feeding function and separation function of each roller is performed.

  In order for the sheet separating unit 12 to generate an appropriate sheet separating action, it is necessary to position the nip portion between the first roller 10 and the second roller 11 on the conveyance path from the mounting table for feeding the sheet. . The sheet separating unit 12 is supported so as to be able to swing, and when a sheet is sent out from the first mounting table 2, the sheet separating unit 12 is moved downward to move the nip portion onto the conveyance path from the first mounting table 2. Similarly, when a sheet is sent out from the second mounting table 4, swing control is performed to move the sheet separating unit 12 upward and position the nip portion on the conveyance path from the second mounting table 4. Is called.

  The sheet that has passed through the sheet separation unit 12 is fed to the downstream image reading sensor units 22 and 23 by a pair of downstream conveying rollers, and an image is read.

  Reference numeral 30 denotes a conveyance path selection flap, which performs drive control for switching the conveyance path for paper discharge according to the first or second mounting table 2 or 4 that has sent out the sheet. Reference numeral 25 denotes a paper discharge table in which the sheets 3a sent from the first paper discharge table 2 are sequentially stacked with the front side facing down. Reference numeral 24 denotes a paper discharge table which is sequentially stacked with the front side of the sheet 5a sent from the second paper discharge table 4 facing upward.

  Reference numeral 100 denotes an operation unit. The operation unit 100 is a user interface for inputting an instruction to the image reading apparatus 1. For example, a reading mode, a reading size instruction, and the like are selected and input by a user operation on the operation unit 100. Instead of the selection input operation by the user on the display unit 100, the above-described instruction may be selectively input from an external control device 190 such as a PC connected via the communication I / F via the communication unit 180. Good.

  A control unit 110 includes a CPU inside, and controls the image reading apparatus 1. Reference numeral 120 denotes sensors including document detection sensors 13 and 14 or image reading sensors 22 and 23 that detect the presence or absence of a sheet placed on the placement tables 2 and 4. Reference numeral 130 denotes motors for driving various movable members such as the pickup roller 7. Reference numeral 140 denotes a motor driver for operating the motors 130, which receives a motor operation command from the control unit 110 and outputs an operation signal to the motor. Reference numeral 150 denotes a memory (ROM) for storing the entire control program and the read image. Note that the control unit 110 controls the image reading apparatus 1 by reading and executing the program recorded in the ROM 150. Reference numeral 160 denotes a memory (RAM) used for storing signals from the sensors 120 and temporarily storing read image data. Reference numeral 170 denotes an encoder that outputs a rotation signal of the motors 130.

  Next, sheet feeding control and sheet discharging control of the image reading apparatus 1 will be described.

  A user places a plurality of sheets 3a or 5a on the placement table 2 or 4 and presses an operation switch (reading operation start switch (not shown)) of the operation unit 100 or is connected via a communication unit 180. When the operation start signal is received from an external control device 190 such as the control unit 110, the control unit 110 determines whether or not the user has selected transport from the first mounting table 2, and the first mounting table 2 is selected. If the second mounting table 4 is selected, the process proceeds to step S512.

  In step S502, it is determined whether or not the sensor 13 detects the sheet bundle 3 based on an electrical signal (issued light receiving sensor signal) output from the document detection sensor 13 provided on the first mounting table 2. . If the sensor 13 has detected the sheet bundle 3, the process proceeds to step S503. If the sensor 13 has not detected the sheet bundle 3, the process proceeds to step S512.

  In step S <b> 503, the control unit 110 swings the support member 50 in a direction that lowers the pickup roller 7 in order to press the pickup roller 7 against the sheet bundle 3 placed on the first placement table 2. To control.

  In step S <b> 504, the control unit 110 swings in the direction of lowering the sheet separation unit 12 in order to position the nip portion between the first roller 10 and the second roller 11 on the conveyance path from the first mounting table 2. The driving means (not shown) to be controlled is controlled.

  In step S505, the control unit 110 rotates the pickup roller 7 so as to rotate counterclockwise in FIG. 1 in order to send the sheet 3a from the first mounting table 2 toward the sheet separating unit 12. Control the control means.

  In step S506, the control unit 110 controls rotation control means (not shown) that can drive the first roller 10 and the second roller 11 counterclockwise in FIG. generate.

  In step S531, the control unit 110 controls a driving unit (not shown) that moves the conveyance path selection flap 30 upward so that the sheet 3a passes through the conveyance path 31 and is discharged to the first discharge tray 25. . At this time, the sheets 3a placed on the uppermost part of the sheet bundle 3 are sequentially discharged onto the sheet discharge table 25 with the front side facing down. The order of the sheet bundle when it is discharged onto one discharge tray 25 is not changed.

  In step S507, the sheet 3a is conveyed.

  In step S508, the control unit 110 determines whether a sheet conveyance stop command has been received from an external control device 190 such as a PC connected via the operation unit 100 or the communication unit 180, and has received the sheet conveyance stop command. In the case where the conveyance is stopped and the sheet conveyance stop command is not received, the process proceeds to step S509.

  In step S509, it is determined whether or not the sensor 13 has detected the sheet bundle 3 based on an electrical signal (issued light receiving sensor signal) output from the document detection sensor 13 provided on the first mounting table 2. . If the sensor 13 detects the sheet bundle 3, the process returns to step S507 to continue the paper feeding operation. If the sensor 13 does not detect the sheet bundle 3, the conveyance of the sheet bundle 3 on the first mounting table 2 is continued. If completed, the process proceeds to step S512.

  In step S512, it is determined whether or not the sensor 14 detects the sheet bundle 5 based on an electrical signal (issued light receiving sensor signal) output from the document detection sensor 14 provided on the second mounting table 4. . When the sensor 14 detects the sheet bundle 5, the process proceeds to step, and when the sensor 14 does not detect the sheet bundle 5, the process proceeds to step S533.

  In step S533, the control unit 110 determines whether a sheet conveyance stop command has been received from an external control device 190 such as a PC connected via the operation unit 100 or the communication unit 180, and has received the sheet conveyance stop command. In this case, the conveyance is stopped, and if the sheet conveyance stop command is not received, the process returns to step S502.

  In step S513, the control unit 110 causes the support member 50 to swing in the direction in which the pickup roller 7 is raised in order to press the pickup roller 7 against the sheet bundle 5 placed on the second placement table 4. To control.

  In step S514, the control unit 110 swings in the direction in which the sheet separating unit 12 is raised in order to position the nip portion between the first roller 10 and the second roller 11 on the conveyance path from the second mounting table 4. The driving means (not shown) to be controlled is controlled.

  In step S515, the control unit 110 controls the rotation of the pickup roller 7 to rotate clockwise in FIG. 1 in order to send the sheet 5a from the second mounting table 4 toward the sheet separating unit 12. Control means.

  In step S516, the control unit 110 controls rotation control means (not shown) that can drive the first roller 10 and the second roller 11 in the clockwise direction in FIG. 1 to generate an appropriate sheet separation action. Let

  In step S532, the control unit 110 controls a driving unit (not shown) that moves the conveyance path selection flap 30 downward so that the sheet 5a passes through the conveyance path 32 and is discharged to the second discharge tray 24. To do. At this time, the sheets 5a placed on the lowermost part of the sheet bundle 5 are sequentially discharged onto the sheet discharge table 24 with the back side of the sheet 5a facing down. The order of the sheet bundle when it is discharged to the second discharge table 24 is not changed.

  In step S517, the sheet 5a is conveyed.

  In step S518, the control unit 110 determines whether a sheet conveyance stop command has been received from an external control device 190 such as a PC connected via the operation unit 100 or the communication unit 180, and has received the sheet conveyance stop command. In the case where the conveyance is stopped and the sheet conveyance stop command is not received, the process proceeds to step S519.

  In step S519, it is determined whether or not the sensor 14 detects the sheet bundle 5 based on an electrical signal (issued light receiving sensor signal) output from the document detection sensor 14 provided on the second mounting table 4. . If the sensor 14 detects the sheet bundle 5, the process returns to step S517 to continue the paper feeding operation. If the sensor 14 does not detect the sheet bundle 5, the conveyance of the sheet bundle 5 on the second mounting table 4 is continued. If completed, the process returns to step S502.

  Next, a function for automatically changing and saving the order of image data will be described.

  In the paper feeding method, when the paper is fed from the first mounting table 2, the pickup roller 7 comes into contact with the uppermost part of the sheet bundle 3 and sends out the sheets, so that the papers are sequentially fed from the sheets placed thereon. . On the other hand, when the paper is fed from the second mounting table 4, the pickup roller 7 comes into contact with the lowermost part of the sheet bundle 5 and sends out the sheets, so that the sheets are sequentially sent from the sheets placed below.

  The user places the sheet bundles 3 and 5 on the placing table 2 or 4 so that the first sheet in the sheet bundle, that is, the sheet to be read first, is at the top. However, when the paper is fed from the second mounting table 4, the last sheet of the sheet bundle, that is, the last sheet to be read is sent in the reverse order, and the read image data is read in the order of reading. When saved, it is saved in the reverse order to the order intended by the user.

  In order to avoid this problem, the control unit 110 of the image reading apparatus 1 performs processing using the RAM 160.

  In the case of the sheet image data sent from the first mounting table 2, the control unit 110 converts the file into an electronic file in the order of reading, stores it in the RAM 160 or ROM 150, or connects to an external device such as a PC connected via the communication unit 180. It is sent to the control device 190.

  In the case of sheet image data sent from the second mounting table 4, the control unit 110 temporarily stores the read image data in the RAM 160. When the control unit 110 detects that there is no sheet on the second mounting table 4 based on a signal from the sheet detection sensor 14 provided on the second mounting table 4, the image data temporarily stored in the RAM 160. Are converted into an electronic file so as to be in the reverse order of the reading order, stored in the RAM 160 or the ROM 150, or sent to an external control device 190 such as a PC connected via the communication unit 180.

  The function of automatically changing and storing the arrangement order of the image data is not limited to being performed by the image reading apparatus 1. The control unit 110 requests the external control device 190 such as a PC connected via the communication unit 180 to indicate that there is no need to rearrange images when the mounting table for sending sheets is the first mounting table 2. In addition, when the mounting table to which the sheet is sent is the second mounting table 4, a request (rearrangement required request) indicating that the images need to be rearranged is transmitted. The control unit 110 of the image reading apparatus 1 sends the read image data to an external control device 190 such as a PC, and the external control device 190 reads the image data based on the rearrangement unnecessary request and the rearrangement necessity request. Rearrangement and electronic file creation may be performed.

  As described above, according to the present embodiment, during conveyance of a sheet bundle on the placement table, the user can place another sheet bundle in a large amount if the other placement table is free. The sheet can be efficiently conveyed, and the order of the discharged sheets and the order of the electronic data of the images read by the image reading apparatus are not changed, and the image reading apparatus can be provided without an expensive configuration. . In addition, while simplifying the configuration of the sheet separation unit, it is possible to provide an appropriate sheet separation function and to increase sheet feeding stability.

  In this embodiment, the first mounting table and the second mounting table have the positional relationship shown in FIG. 1, but the relative positional relationship between the first mounting table and the second mounting table, and the sheet bundle to be mounted. The overlapping direction is not limited.

  In the present embodiment, the first mounting table 2 and the second mounting table 4 are fixedly arranged, but the first mounting table 2 and the second mounting table 4 are controlled to move in the vertical direction. Also good.

(Example 2)
Next, an image reading apparatus according to a second embodiment of the present invention will be described with reference to FIGS. In addition, about a part which overlaps or corresponds to embodiment of the said Example 1, it uses a figure and a code | symbol and demonstrates.

  In the present embodiment, as shown in FIG. 4, the sheet separating unit 12 is provided with a sheet introduction path 51 on the upstream side of the first roller 10 and the second roller 11. The sheet introduction path 51 is used for guiding the sheet from the mounting table for feeding the sheet to the nip portion between the first roller 10 and the second roller 11 in order for the sheet separating unit 12 to generate an appropriate sheet separating action. Oscillation control is performed so that the conveyance path is located at an appropriate position.

  The sheet feed control and sheet discharge control of the image reading apparatus in this embodiment will be described.

  A user places a plurality of sheets 3a or 5a on the placement table 2 or 4 and presses an operation switch (reading operation start switch (not shown)) of the operation unit 100 or is connected via a communication unit 180. When the operation start signal is received from the external control device 190, the control unit 110 determines whether or not the user has selected the first mounting table 2, and if the first mounting table 2 is selected, step S602. If the second mounting table 5 is selected, the process proceeds to step S612.

  In step S602, it is determined whether or not the sensor 13 detects the sheet bundle 3 based on an electrical signal (issued light receiving sensor signal) output from the document detection sensor 13 provided on the first mounting table 2. . If the sensor 13 has detected the sheet bundle 3, the process proceeds to step S603, and if the sensor 13 has not detected the sheet bundle 3, the process proceeds to step S612.

  In step S <b> 603, the control unit 110 is not shown so that the support member 50 rotates in the direction of lowering the pickup roller 7 in order to press the pickup roller 7 against the sheet bundle 3 placed on the first table 2. Control the driving means.

  In step S <b> 604, the control unit 110 controls a driving unit (not shown) that moves the sheet introduction path 51 in a direction to lower the sheet introduction path 51 in order to position the sheet introduction path 51 on the conveyance path from the first placement table 2. At this time, the positions of the first roller 10 and the second roller 11 in the sheet separating unit 12 are fixed.

In step S605, the control unit 110 rotates the unillustrated rotation so that the pickup roller 7 rotates counterclockwise in FIG. 4 in order to send the sheet 3a from the first mounting table 2 toward the sheet separating unit 12. Control the control means.

  In step S606, the control unit 110 controls a rotation control means (not shown) that can drive the first roller 10 and the second roller 11 counterclockwise in FIG. generate.

  In step S <b> 631, the control unit 110 controls a driving unit (not shown) that moves the conveyance path selection flap 30 upward so that the sheet 3 a passes through the conveyance path 31 and is discharged onto the first discharge tray 25. . At this time, the sheets 3a placed on the uppermost part of the sheet bundle 3 are sequentially discharged onto the sheet discharge table 25 with the front side facing down. The order of the sheet bundle when it is discharged onto one discharge tray 25 is not changed.

  In step S607, the sheet 3a is conveyed.

  In step S608, the control unit 110 determines whether a sheet conveyance stop command has been received from an external control device 190 such as a PC connected via the operation unit 100 or the communication unit 180, and has received the sheet conveyance stop command. In the case where the conveyance is stopped and the sheet conveyance stop command is not received, the process proceeds to step S609.

  In step S609, it is determined whether or not the sensor 13 detects the sheet bundle 3 based on an electrical signal (issued light receiving sensor signal) output from the document detection sensor 13 provided on the first mounting table 2. . If the sensor 13 detects the sheet bundle 3, the process returns to step S607 to continue the paper feeding operation. If the sensor 13 does not detect the sheet bundle 3, the conveyance of the sheet bundle 3 on the first mounting table 2 is performed. If completed, the process proceeds to step S612.

  In step S612, it is determined whether or not the sensor 14 detects the sheet bundle 5 based on an electrical signal (issued light receiving sensor signal) output from the document detection sensor 14 provided on the second mounting table 4. . When the sensor 14 detects the sheet bundle 5, the process proceeds to step, and when the sensor 14 does not detect the sheet bundle 5, the process returns to step S533.

  In step S633, the control unit 110 determines whether a sheet conveyance stop command has been received from an external control device 190 such as a PC connected via the operation unit 100 or the communication unit 180, and has received the sheet conveyance stop command. In this case, the conveyance is stopped, and if the sheet conveyance stop command is not received, the process returns to step S602.

  In step S <b> 613, the control unit 110 is not shown so that the support member 50 rotates in the direction in which the pickup roller 7 is raised in order to press the pickup roller 7 against the sheet bundle 5 placed on the second table 4. Control the driving means.

  In step S <b> 614, the control unit 110 controls a driving unit (not shown) that moves the sheet introduction path 51 in the direction of raising the sheet introduction path 51 in order to position the sheet introduction path 51 on the conveyance path from the second placement table 4. At this time, the positions of the first roller 10 and the second roller 11 in the sheet separating unit 12 are fixed.

  In step S615, the control unit 110 controls the rotation of the pickup roller 7 to rotate clockwise in FIG. 4 in order to send the sheet 5a from the second mounting table 4 toward the sheet separating unit 12. Control means.

  In step S616, the control unit 110 controls rotation control means (not shown) that can drive the first roller 10 and the second roller 11 in the clockwise direction in FIG. 4 to generate an appropriate sheet separation action. Let

  In step S632, the control unit 110 controls a driving unit (not shown) that moves the conveyance path selection flap 30 downward so that the sheet 5a passes through the conveyance path 32 and is discharged onto the second discharge tray 24. To do. At this time, the sheets 5a placed on the lowermost part of the sheet bundle 5 are sequentially discharged onto the sheet discharge table 24 with the back side of the sheet 5a facing down. The order of the sheet bundle when it is discharged to the second discharge table 24 is not changed.

  In step S617, the sheet 5a is conveyed.

  In step S618, the control unit 110 determines whether a sheet conveyance stop command has been received from an external control device 190 such as a PC connected via the operation unit 100 or the communication unit 180, and the sheet conveyance stop command has been received. In the case where the conveyance is stopped and the sheet conveyance stop command is not received, the process proceeds to step S619.

  In step S619, it is determined whether or not the sensor 14 detects the sheet bundle 5 based on an electrical signal (issued light receiving sensor signal) output from the document detection sensor 14 provided on the second mounting table 4. . If the sensor 14 detects the sheet bundle 5, the process returns to step S <b> 617 to continue the paper feeding operation. If the sensor 14 does not detect the sheet bundle 5, the conveyance of the sheet bundle 5 on the second mounting table 4 is performed. If completed, the process returns to step S602.

  Other configurations and working effects in the present embodiment are the same as those in the first embodiment.

Example 3
In the first embodiment, the case where the user places the sheet bundle 5 on the second placement table 4 so that the first sheet in the sheet bundle, that is, the sheet to be read first, is placed at the top is described. . In this embodiment, contrary to the first embodiment, a case will be described in which the user places the sheet bundle 5 on the second placement table 4 so that the first sheet, that is, the sheet to be read first, is at the bottom. . A function for automatically changing and saving the arrangement order of image data, which is a different part from the first embodiment, will be described.

  In this embodiment, the user feeds the sheet bundle 5 from the second mounting table 4 in order to place the sheet bundle 5 on the second mounting table 4 so that the first sheet is at the bottom, that is, facing down. In this case, the sheet is sent from the first sheet of the sheet bundle. At this time, since the first sheet faces downward, the front side surface of the sheet is read by the image reading sensor 22 and the back side surface is read by the image reading sensor 23. On the other hand, the sheet sent out from the first mounting table 2 is read by the image reading sensor 23 on the front side and by the image reading sensor 22 on the back side. Accordingly, the image data of the sheet sent from the second mounting table 4 is in reverse order.

  In order to avoid this problem, the control unit 110 of the image reading apparatus 1 performs processing using the RAM 160.

  In the case of the sheet image data sent from the first mounting table 2, the control unit 110 reads the image data from the image reading sensor 23 that reads the front side surface of the sheet, and the image reading sensor 22 that reads the back side surface of the sheet. Are converted into electronic files in the order of image data from the image data, stored in the RAM 160 or the ROM 150, or sent to an external control device 190 such as a PC connected via the communication unit 180.

  When the pickup roller 7 is in the upper position, it is image data of the sheet sent from the second mounting table 4, so the control unit 110 reads the image data from the image reading sensor 22 that reads the surface of the read sheet. Then, the image data from the image reading sensor 22 that has read the back side of the sheet is converted into an electronic file in order, stored in the RAM 160 or the ROM 150, or sent to an external control device 190 such as a PC connected via the communication unit 180.

  The above operations are not limited to being performed by the image reading apparatus 1. The control unit 110 confirms that there is no need to rearrange the front and back of the image when the mounting table for sending sheets to the external control device 190 such as a PC connected via the communication unit 180 is the first mounting table 2. A request indicating that there is a need for rearrangement of the front and back of the image (requirement for front / back rearrangement). Send. The control unit 110 of the image reading apparatus 1 sends the read image data to an external control device 190 such as a PC. The external control device 190 performs image processing based on the front / back rearrangement unnecessary request and the front / back rearrangement necessary request. Rearrangement of data and rearrangement and conversion to electronic files may be performed.

DESCRIPTION OF SYMBOLS 1 Image reading apparatus 2 1st mounting base 3, 5 Sheet bundle 3a, 5a Sheet 4 2nd mounting base 6 Pressing plate 7 Pickup roller 10 First roller 11 Second roller 12 Sheet separation part 13, 14 Document detection Sensor 15 Coil springs 20, 21, 26 Conveying roller pair 22, 23 Image reading sensor unit 24 Second paper discharge tray 25 First paper discharge tray 30 Conveyance path selection flaps 31, 32 Conveyance path 50 Support member 51 Sheet introduction path

Claims (6)

A first placing table on which a sheet bundle is placed;
A second mounting table on which the sheet bundle is mounted;
A pick roller that reciprocates between the first mounting table and the second mounting table;
Control means for controlling the rotational drive of the pick roller,
The pick roller is applied to the sheet bundle on the first mounting table from the mounting surface side of the first mounting table, and the rotation direction of the pick roller is rotated in the first direction by the control means. By controlling, while taking in the sheet from the bottom of the sheet bundle,
For the sheet bundle on the second mounting table, the pick roller is applied to the uppermost surface of the sheet bundle, and the rotation direction of the pick roller is controlled to rotate in the direction opposite to the first direction by the control means. Accordingly, a sheet take-in apparatus that takes in a sheet from the top of the sheet bundle. A first placing table that is sequentially sent out from the upper sheet of the placed sheet bundle;
A second placement table that is sequentially sent out from the lower sheet of the placed sheet bundle;
One pickup roller located between the first mounting table and the second mounting table;
A sheet separating portion composed of a first roller and a second roller located downstream of the pickup roller;
First control means for swinging the pickup roller so as to press the first mounting table or the second mounting table for feeding a sheet;
According to the first mounting table or the second mounting table on which sheet feeding is performed, the rotation direction of the first roller and the second roller of the sheet separation unit is switched, and a separation function and a sheet feeding function A second control means for switching between,
Third control means for switching the rotation direction of the pickup roller in accordance with the first mounting table or the second mounting table to which paper feeding is performed;
The sheet separating unit is swung so that a nip portion between the first roller and the second roller of the sheet separating unit is disposed on a sheet feeding path through which the sheet is fed by the pickup roller. Fourth control means;
A sheet conveying apparatus comprising: A first paper discharge table for sequentially stacking sheets fed from the first mounting table, with the front side of the fed sheets facing down,
A second paper discharge table for sequentially stacking sheets fed from the second mounting table, with the front side of the fed sheets facing up,
A sheet discharge table control means for switching a sheet discharge destination to either the first sheet discharge table or the second sheet discharge table;
The sheet conveying apparatus according to claim 2, further comprising: Image reading means for reading the image of the conveyed sheet;
It has a function of automatically changing and storing the arrangement order of the image data read by the image reading unit according to the first mounting table or the second mounting table to which paper is fed. The sheet conveying apparatus according to claim 3. Image reading means for reading the image of the conveyed sheet;
Communication for transmitting a request for necessity of rearrangement of image data read by the image reading unit to an external control device in accordance with the first mounting table or the second mounting table to which paper is fed Function and
The sheet conveying apparatus according to claim 3, further comprising a communication function of transmitting image data obtained by the image reading unit to an external control device. A system comprising the sheet conveying device according to claim 4 and an external device connected to the sheet conveying device,
The external device has a function of automatically changing and storing the arrangement order of the image data based on a request for necessity of rearranging the image data read by the sheet conveying device. .

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