KR20240010999A - ejector position of finisher - Google Patents

Abstract

The disclosed post-processing device includes a post-processing member that performs post-processing work on paper aligned on a paper alignment tray, an ejector capable of traveling along a circular path to push and discharge paper on the paper alignment tray to an discharge tray, and an discharge tray. It is opposed to and includes a front cover provided with a front opening to allow circular travel of the ejector. In standby, the ejector is placed in the standby position in a position blocking the front opening.

Description

Ejector position of finishing device {ejector position of finisher}

A post-processing device is a device that performs post-processing operations on sheet-like media, for example paper. The post-treatment device may be a stand-alone device. The post-processing device may be connected to the printing device to form an image forming device, and may perform post-processing work on the print media on which printing has been completed as a follow-up process to the printing work performed by the printing device.

The post-processing device includes a post-processing member that performs a post-processing process on paper. Post-processing operations may include, for example, binding, punching, etc. The post-processing member performs post-processing work on the edges of the paper in the width direction, either at a fixed position or while moving in the width direction of the paper.

1 is a schematic side configuration diagram of an example of a post-processing device.
FIG. 2 is a schematic plan view of an example of the post-processing device shown in FIG. 1.
Figure 3 shows an example of a structure for circulating an ejector.
Figure 4 is an example of a structure for moving the rear end alignment member.
Figure 5 shows the ejector positioned in the home position.
Figure 6 shows the ejector positioned in the standby position.
Figure 7 shows a plurality of papers aligned on a paper alignment tray.
Figure 8 shows discharging multiple sheets of paper to an output tray.
9 is a schematic configuration diagram of an example of a post-processing device.

A post-processing device performs post-processing operations on a sheet of media, for example paper. Post-processing operations may include binding, punching, etc. Paper subject to post-processing is aligned on a paper alignment tray, and the post-processing member performs post-processing work on the edges of the paper. When the post-processing work is completed, the ejector pushes the post-processed paper and discharges it to the discharge tray. The ejector travels along a circular path to eject paper. The paper alignment tray is provided with an ejection groove that forms the movement path of the ejector. In order to sufficiently push the end of the paper on the paper alignment tray and discharge it to the discharge tray, the discharge groove extends to the front cover opposite the discharge tray, thereby forming a front opening opening toward the front in the front cover. If foreign matter flows in through the exposed front opening, the foreign matter may interfere with the driving members inside the post-processing device, causing an operation error or malfunction of the device. Additionally, since the front opening is connected to the discharge groove, if foreign matter flows into the discharge groove, it may interfere with the operation of the ejector.

The post-processing device of the present disclosure has a structure that can reduce or prevent the possibility of foreign substances entering through the front opening. An example of the post-processing device of the present disclosure includes a paper alignment tray on which paper subject to post-processing is aligned, a post-processing member that performs post-processing on the paper, and an discharge tray on which paper discharged from the paper alignment tray is loaded, It may include an ejector capable of circular movement in order to push and discharge the paper on the paper alignment tray to the discharge tray, and a front cover facing the discharge tray and having a front opening to allow circular movement of the ejector. In standby, the ejector is placed in the standby position in a position blocking the front opening. At least one sheet of paper, for example, one sheet of paper or multiple sheets of paper, may be aligned on the paper alignment tray. According to this configuration, since the ejector blocks the front opening, the possibility of foreign substances entering through the front opening can be reduced or prevented. As an example, the controller may control a motor that drives the ejector to position the ejector in a standby position that blocks the front opening during standby.

As an example, the ejector may have a home position that allows paper to be aligned on a paper alignment tray. The home position may be a reference position for determining the position of the ejector. The home position sensor can detect the ejector located at the home position. The position of the ejector can be determined based on the detection signal of the home position sensor, and the ejector can be moved or driven to a desired position based on the driving time of the motor that circulates the ejector, the number of driving pulses, etc.

As an example, the standby location and the home location may be different locations. The home position may be a position that allows the paper to be aligned on the paper alignment tray. In other words, the home position may be a position that does not interfere with the paper on the paper alignment tray. The control unit may control the motor to move the ejector from the standby position to the home position, and control the post-processing member to perform post-processing work on the paper aligned on the paper alignment tray. When the post-processing work is completed, the control unit may control the motor to circulate the ejector from the home position and discharge the paper into the discharge tray. When ejection of paper is completed, the controller may control the motor to place the ejector in the standby position.

As an example, the home location and the standby location may be the same location. In this case, the standby position may be a position that allows the paper to be aligned on the paper alignment tray, that is, a position that does not interfere with the paper on the paper alignment tray. The home position sensor can detect the ejector located in the standby position. The control unit may control the post-processing member to perform post-processing work on the paper aligned on the paper alignment tray while the ejector is located in the standby position. When the post-processing work is completed, the control unit can control the motor to circulate the ejector from the standby position to discharge the paper to the discharge tray and return it to the standby position.

Hereinafter, examples of post-processing devices will be described with reference to the drawings. In the drawings, the same reference numerals refer to the same components, and the size or thickness of each component may be exaggerated for clarity of explanation.

1 is a schematic side view of an example of a post-processing device. FIG. 2 is a schematic plan view of an example of the post-processing device shown in FIG. 1. Referring to Figures 1 and 2, the post-processing device includes a paper alignment tray 10 on which at least one sheet of paper (PS) subject to post-processing is aligned, and a post-processing member 20 that performs post-processing on the paper (PS). , an ejector (95) on which the paper (PS) discharged from the paper alignment tray (10) is loaded, and an ejector ( 80), it may include a front cover 60 that faces the discharge tray 95 and is provided with a front opening 61 to allow the ejector 80 to circulate in circulation. In standby, the ejector 80 may be positioned in a standby position 80b blocking the front opening 61.

Post-processing operations may include, for example, punching, binding, etc. Punching operations can be performed on one or multiple sheets of paper (PS). Binding operations are usually performed on multiple sheets of paper (PS). Below, a case where a binding operation is performed on multiple sheets (PS) as a post-processing operation will be described.

The control unit 200 controls the post-processing process. The control unit 200 may be a collection of electronic elements for controlling the post-processing process. The control unit 200 may include one or more processors, for example, a central processing unit (CPU). The control unit 200 may include memory. An application program including various commands for controlling the post-processing process and various control recognitions for control may be stored in the memory. The processor can control post-processing by executing an application program. Although not shown in the drawing, the control unit 200 may include a communication unit for communication with the host. The control unit 200 may include a driving circuit for driving various control elements, for example, a motor driving circuit.

The paper alignment tray 10 may have an upper surface extending in the discharge direction E1. A plurality of papers (PS) subject to post-processing are aligned on the upper surface of the paper alignment tray 10. As shown in FIG. 2, a discharge groove 19 extending in the discharge direction E1 is provided on the upper surface of the paper alignment tray 10. In this example, a pair of discharge grooves 19 are provided to be spaced apart from each other in the width direction (W) of the plurality of sheets (PS).

A front cover 60 is provided on the discharge direction (E1) side of the paper alignment tray 10. The front cover 60 faces the discharge tray 95. The front cover 60 may be integrated with the paper alignment tray 10. In this case, the front cover 60 may extend downward from the end of the paper alignment tray 10 in the discharge direction E1. The front cover 60 may be a separate member from the paper alignment tray 10. A front opening 61 is provided in the front cover 60. The front opening 61 is connected to the discharge groove 19 to allow circular travel of the ejector. In this example, a pair of front openings 61 connected to a pair of discharge grooves 19 are provided in the front cover 60.

A transfer structure may be provided to transfer the paper P to the post-processing device. As an example, the transport structure may include transport rollers 92 and 93 and a paddle 94. Each of the transport rollers 92 and 93 includes a pair of rollers that engage and rotate with each other, and transports the paper P flowing in through the inlet 91 in the discharge direction E1 to form the paper alignment tray 10. Put it on the table. The paddle 94 pushes the paper P in the post-processing direction E2 so that the end of the paper P dropped on the paper alignment tray 10 contacts the rear end alignment member 30, which will be described later. By this, a plurality of papers PS are loaded on the paper alignment tray 10, and the ends of the plurality of papers PS can be aligned. The transport rollers 92, 93, and paddle 94 may be driven by one or more transport motors.

A pair of side alignment members 40 aligns the edges PE1 of the plurality of sheets PS in the width direction W. The pair of side alignment members 40 may be moved symmetrically to each other in the width direction W according to the width of the plurality of sheets PS. The rear end alignment member 30 is located on the post-processing direction E2 side of the paper alignment tray 10 to align the ends of the plurality of papers P. The post-processing direction E2 is opposite to the discharge direction E1. The rear end alignment member 30 includes an alignment portion 33 where the ends of a plurality of sheets PS come into contact with each other. The alignment portion 33 extends, for example, in the thickness direction of the plurality of sheets PS. The rear alignment member 30 may include an extension portion 34 extending from the upper end of the alignment portion 33 at a distance from the paper alignment tray 10 . For example, the paper P dropped onto the paper alignment tray 10 by the transfer rollers 92 and 93 is pushed in the post-processing direction E2 by the paddle 94. The ends of the plurality of papers PS enter the receiving space between the paper alignment tray 10 and the extension portion 34 of the rear end alignment member 30, and come into contact with the alignment portion 33. As a result, the ends of the plurality of papers PS on the paper alignment tray 10 can be aligned neatly. The gripper 50 is supported by the extension portion 34 of the rear alignment member 30 and can press the plurality of papers PS on the paper alignment tray 10 by the elastic member.

The post-processing member 20 performs post-processing work on a plurality of sheets (PS). For example, post-processing operations may include punching, binding, etc. The post-processing member 20 of this example is a binder that binds multiple sheets of paper (PS). The post-processing member 20 includes a binding unit 21 that performs a binding operation on a plurality of sheets PS. For example, the post-processing member 20 may be a staple binder that attaches binding pins (staples) to a plurality of sheets (PS). The binding unit 21 includes a compression unit that presses binding pins to allow a plurality of sheets (PS) to pass through, and a forming part that supports the plurality of sheets (PS) and bends and molds the binding pins that have passed through the plurality of sheets (PS). can do. For example, the post-processing member 20 may be a stapleless binder that binds multiple sheets of paper (PS) in a stapleless manner without using binding pins. For example, the binding portion 21 of a stapleless binder may be provided with a pair of pressing teeth facing each other in the vertical direction with a plurality of sheets PS in between. Each pair of pressing teeth may have a plurality of concave portions and a plurality of convex portions arranged alternately. With a plurality of sheets (PS) positioned between a pair of press teeth, the pair of press teeth approach each other and press the plurality of sheets (PS), thereby making it possible to bind a plurality of sheets (PS).

The post-processing member 20 may be located on the post-processing direction E2 side of the paper alignment tray 10. The post-treatment member 20 may have a fixed position. For example, the post-processing member 20 may perform a post-processing operation, for example, a binding operation, on the edge PE2 in the post-processing direction E2 of a plurality of sheets PS at a fixed position. The post-processing member 20 may be moved in the width direction (W). For example, the post-processing member 20 may be mounted on the moving base 210. The moving base 210 may be connected to a belt 220 running in the width direction (W). The belt 220 may be supported on a pair of pulleys 231 and 232 positioned to be spaced apart in the width direction (W). The traveling guide 240 extends in the width direction (W) and supports the movable base 210 so that it can be moved in the width direction (W). For example, a roller (not shown) may be provided at the lower part of the moving base 210, and the roller may be in rolling contact with the traveling guide 240. For example, the traveling guide 240 may be a shaft extending in the width direction (W), and the moving base 210 may be provided with a support structure supported by the shaft. For example, the traveling guide 240 may be a rail, and a coupling portion may be provided on the moving base 210 so as to slide in the width direction (W). As the belt 220 travels, the post-processing member 20 may move in the width direction (W). A wire may be employed instead of the belt 220. With this configuration, the post-processing member 20 can perform post-processing work, for example, binding work, at a desired position on the edge PE2 in the post-processing direction E2 of the plurality of sheets PS. .

The post-processing device may be provided with a discharge structure that discharges a plurality of papers (PS) on the paper alignment tray 10. The discharge structure may comprise, for example, an ejector 80. After the post-processing work is completed, the ejector 80 ejects the plurality of papers (PS) on the paper alignment tray 10 by pushing them in the discharge direction (E1). For example, the ejector 80 may be connected to a circularly traveling member, for example, a belt 81. In this example, a pair of ejectors 80 and a pair of belts 81 that run them respectively are provided. While a plurality of papers (PS) are aligned on the paper alignment tray 10 and post-processing work is performed on the plurality of papers (PS), the ejector 80 moves the plurality of papers (PS) on the paper alignment tray 10. It can be located in a location that does not interfere with. When the post-processing work is completed, as the belt 81 runs, the ejector 80 is in contact with the ends of the plurality of papers (PS) on the paper alignment tray 10 and follows the discharge groove 19 in the discharge direction ( While driving in E1), a plurality of papers (PS) are pushed and discharged to the discharge tray (95). A wire may be employed instead of the belt 81.

Figure 3 shows an example of a structure for circularly traveling the ejector 80. Referring to FIG. 3, the belt 81 may travel circularly while being supported by pulleys 82, 83, and 84. At least one of the pulleys 82, 83, and 84 may be a driving pulley that receives driving force, and the remaining pulleys may be driven pulleys. The motor 201 may drive the ejector 80 by, for example, rotating the drive pulley 83 to circulate the belt 81. The belt 81 may include a discharge section 81a and a return section 81b. The discharge section 81a is partially adjacent to the paper alignment tray 10 and may be parallel to the upper surface of the paper alignment tray 10. The discharge section 81a extends in the discharge direction E1. The discharge section 81a may partially include the outer peripheral section of the pulley 82. One end of the discharge section 81a may be exposed to the outside through the front opening 61. While traveling in the discharge direction E1 along the discharge section 81a, the ejector 80 pushes the ends of the plurality of papers (PS) loaded on the upper surface of the paper alignment tray 10 in the discharge direction E1 to discharge them. It can be discharged to the tray (95). The return section 81b is a section connecting both ends of the discharge section 81a. In FIG. 3, the return section 81b is divided by a pulley 84 and includes two sections forming an angle with each other, but the shape of the return section 81b is not limited thereto. The return section 81b may be parallel to the discharge section 81a. In this case, the pulley 84 may be omitted. The ejector 80 is connected to the belt 81. Although not shown in the drawing, a guide member that guides the ejector 80 may be provided to maintain the posture of the ejector 80 as the belt 81 circulates.

Ejector 80 may have a home position 80a. The home position sensor 202 can detect the ejector 80 located at the home position 80a. The home location sensor 202 may be implemented using various sensors, such as an optical sensor, a magnetic sensor, or a micro switch sensor. As an example, when the ejector 80 reaches the home position 80a, an actuator not shown may be activated, and the home position sensor 202 may detect the operation of the actuator. The home position 80a provides a reference for determining the position of the ejector 80. For example, the home position 80a may be a reference position of the ejector 80. The control unit 200 may determine whether the ejector 80 is located at the home position 80a from the detection signal of the home position sensor 202. After the ejector 80 is located at the home position 80a, the control unit 200 may move the ejector 80 to a desired position based on the time for driving the motor 201, the number of driving pulses, etc.

Ejector 80 may have a standby position 80b. The standby position 80b may be a position waiting for a post-processing work start input after the post-processing device is turned on. In the post-processing device of this example, the standby position 80b is a position that blocks the front opening 61, and the standby position 80b is a position different from the home position 80a. The standby position 80b may be an end adjacent to the discharge tray 95 of the discharge section 81a, for example, a position adjacent to an end of the discharge section 81a in the discharge direction E1. The front opening 61 faces the discharge tray 95 and is exposed to the outside. If foreign matter flows in through the exposed front opening 61, the foreign matter may interfere with the driving members inside the post-processing device, causing an operation error or malfunction of the device. Additionally, since the front opening 61 is connected to the discharge groove 19, if foreign matter flows into the discharge groove 19, it may interfere with the operation of the ejector 80. According to the post-processing device of this example, the control unit 200 can control the motor 201 to position the ejector 80 in the standby position 80b that blocks the front opening 61 during standby. According to this, since the ejector 80 blocks the front opening 61 during standby, the possibility of foreign substances entering through the front opening 61 can be reduced or prevented.

Referring to FIG. 1, the alignment portion 33 of the rear end alignment member 30 that aligns the ends of a plurality of sheets (PS) is aligned in the post-processing direction (E2) rather than the end of the discharge section (81a) in the post-processing direction (E2). It is located away from E2). In order to discharge a plurality of sheets (PS) using the ejector 80, the ends of the plurality of sheets (PS) must be located at least near the end of the discharge section (81a) in the post-processing direction (E2). To this end, before the ejector 80 reaches the end of the discharge section 81a in the post-processing direction E2, the rear alignment member 30 is moved in the discharge direction E1 to discharge a plurality of sheets (PS). It can be moved in direction (E1).

Figure 4 is an example of a structure for moving the rear end alignment member 30. Referring to FIG. 4, a support 11 may be provided at the bottom of the paper alignment tray 10. A circulation traveling member 12, for example, a belt, a wire, etc., which circulates in the discharge direction E1 and the post-processing direction E2 may be provided on the support 11. The slider 110 is connected to the circular traveling member 12 and is slidably supported on the support 11. For example, a rail 112 may be provided on the slider 110, and guide rollers 13 in rolling contact with the rail 112 may be provided on the support 11. The rear end alignment member 30 may be supported on the slider 110. When the circulation traveling member 12 travels in the discharge direction E1 and the post-processing direction E2, the slider 110 slides in the discharge direction E1 and the post-processing direction E2. Since the guide rollers 13 are in rolling contact with the rail 112, the slider 110 can slide smoothly with respect to the support 11. With this configuration, the rear alignment member 30 has an alignment position (solid line in FIG. 1) for aligning a plurality of sheets (PS) on the paper alignment tray 10 and an alignment position (solid line in FIG. 1) for discharging the plurality of sheets (PS). It can be moved to the discharge position (position shown by the dotted line in FIG. 1). Although not shown in the drawing, the alignment position may be various positions for aligning a plurality of sheets (PS) having various lengths.

5 to 8 are diagrams showing an example of a control process of a post-processing device. Figure 5 shows the ejector 80 positioned at the home position 80a. Figure 6 shows the ejector 80 positioned in the standby position 80b. Figure 7 shows a state in which a plurality of papers (PS) are aligned on the paper alignment tray 10. Figure 8 shows a state in which multiple sheets (PS) are discharged to the discharge tray 95. Below, an example of a post-processing process will be described with reference to FIGS. 1 to 8. An example of the post-processing process described below focuses on the position of the ejector 80, and the operations of other components are briefly explained.

First, referring to FIG. 5, when the post-processing device is turned on, the control unit 200 may perform an initialization step. For example, the initialization step may include determining the position of the ejector 80. The control unit 200 drives the motor 201 to drive the ejector 80. When the ejector 80 reaches the home position 80a, the ejector 80 is detected by the home position sensor 202. The control unit 200 sets the home position 80a as the reference position of the ejector 80. The initialization step may further include steps necessary for initializing the post-processing device, such as determining the position of the rear alignment member 30.

If a post-processing command is not input from a host (not shown), the step of placing the ejector 80 in the standby position 80b is performed. If no post-processing command is input from the host for a predetermined period of time after the initialization step is performed, the control unit 200 determines the standby state and uses a motor to move the ejector 80 to the standby position 80b as shown in FIG. 6. Control (201). For example, the control unit 200 drives the motor 201 for a preset time based on the home position 80a, or waits for the ejector 80 by applying a preset number of drive pulses to the motor 201. It can be moved to position (80b). The control unit 200 waits for a post-processing command while the ejector 80 is located at the standby position 80b.

When a post-processing command is input, a post-processing step is performed. The post-processing step may include moving the ejector 80 from the standby position 80b to the home position 80a. The control unit 200 controls the motor 201 to move the ejector 80 from the standby position 80b to the home position 80a. As shown in FIG. 7 , when the ejector 80 reaches the home position 80a, the ejector 80 is detected by the home position sensor 202. The control unit 200 stops driving the motor 201 and maintains the ejector 80 at the home position 80a. The control unit 200 drives the alignment motor (not shown) according to the length information of the plurality of sheets (PS) and moves the circular traveling member 12 to adjust the rear alignment member 30 to the length of the plurality of sheets (PS). Place it at a predetermined alignment position. The control unit 200 drives the transfer motor to rotate the transfer rollers 92 and 93 and the paddle 94 to transfer the paper P and align it on the paper alignment tray 10. As a result, a plurality of papers PS are aligned on the paper alignment tray 10. The control unit 200 drives the post-processing member 20 to perform a post-processing operation, for example, a binding operation, on the edge PE2 in the post-processing direction E2 of the plurality of sheets PS.

Once the post-processing work is completed, a step of discharging a plurality of sheets (PS) is performed. As indicated by reference numeral 80c in FIG. 8, the control unit 200 operates the motor 201 to rotate the ejector 80 from the home position 80a to discharge a plurality of sheets PS into the discharge tray 95. ) is controlled. At this time, the control unit 200 drives the circulation traveling member 12 to move the rear end alignment member 30 in the discharge direction E1 to move the ends of the plurality of papers PS in the post-processing direction (81a) of the discharge section 81a. It is located adjacent to the end of E2). The ejector 80 moves along the discharge section 81a and pushes the ends of the plurality of sheets PS in the discharge direction E1. When the ejector 80 exceeds the end of the discharge section 81a in the discharge direction E1, the plurality of sheets PS are discharged to the discharge tray 95 and loaded.

When ejection of a plurality of sheets (PS) is completed and the next post-processing command is not input, the post-processing device switches to a standby state. When ejection of a plurality of sheets (PS) is completed, the control unit 200 may control the motor 201 to position the ejector 80 at the standby position 80b.

According to the above-described control method of the post-processing device, the ejector 80 is positioned at the standby position 80b during standby to block the front opening 61. Accordingly, the possibility of foreign substances flowing into the post-processing device through the front opening 61 can be reduced or prevented. Additionally, after-sales service costs for responding to device failure due to foreign matter inflow can be reduced.

9 is a schematic configuration diagram of an example of a post-processing device. In Figure 9, only components related to the position of the ejector 80 are shown, and the rest are omitted. The omitted remainder may be the same as described with reference to FIGS. 1 to 4. Referring to FIG. 9, the standby position 80b and the home position 80a are the same position. The home position sensor 202 detects the ejector 80 located at the standby position 80b. In this case, the standby position 80b of the ejector 80 is a position that allows a plurality of sheets (PS) to be aligned on the paper alignment tray 10, that is, the ejector 80 positioned at the standby position 80b. It may be a position that does not interfere with the plurality of papers (PS) on the paper alignment tray 10. Of course, the standby position 80b is a position where the ejector 80 blocks the front opening 61. According to this configuration, by detecting the ejector 80 positioned at the standby position 80b, the reference position of the ejector 80 can be provided, and thus position control of the ejector 80 can be simplified.

Below, an example of a control method of a post-processing device will be described with reference to FIGS. 6 to 9. An example of a control method of a post-processing device described below focuses on the position of the ejector 80, and the operations of other components are briefly described. 6 to 8, the home position sensor 202 detects the ejector 80 located at the standby position 80b, as indicated by a dotted line.

First, referring to FIGS. 9 and 6, when the post-processing device is turned on, the control unit 200 may perform an initialization step. For example, the initialization step may include determining the position of the ejector 80. The control unit 200 drives the motor 201 to drive the ejector 80. When the ejector 80 reaches the standby position 80b, the ejector 80 is detected by the home position sensor 202, as indicated by a dotted line in FIG. 6. The control unit 200 sets the standby position 80b as the reference position of the ejector 80. The initialization step may further include steps necessary for initializing the post-processing device, such as determining the position of the rear alignment member 30.

If a post-processing command is not input from a host (not shown), a step of maintaining the ejector 80 in the standby position 80b is performed. If no post-processing command is input from the host for a predetermined period of time after the initialization step is performed, the control unit 200 determines the standby state, positions the ejector 80 at the standby position 80b as shown in FIG. 6, and performs post-processing. wait for command

When a post-processing command is input, a post-processing step is performed. The post-processing step is performed with the ejector 80 positioned in the standby position 80b. With the ejector 80 positioned at the standby position 80b, the control unit 200 drives the alignment motor according to the length information of the plurality of sheets PS to travel the circular traveling member 12 to move the rear alignment member. (30) is positioned at a predetermined alignment position corresponding to the length of the plurality of sheets (PS). The control unit 200 drives the transfer motor to rotate the transfer rollers 92 and 93 and the paddle 94 to transfer the paper P and align it on the paper alignment tray 10. As a result, a plurality of papers PS are aligned on the paper alignment tray 10. The control unit 200 drives the post-processing member 20 to perform a post-processing operation, for example, a binding operation, on the edge PE2 in the post-processing direction E2 of the plurality of sheets PS.

Once the post-processing work is completed, a step of discharging a plurality of sheets (PS) is performed. As indicated by reference numeral 80c in FIG. 8, the control unit 200 operates the motor 201 to circulate the ejector 80 from the standby position 80b to discharge a plurality of sheets PS to the discharge tray 95. ) is controlled. At this time, the control unit 200 drives the circulation traveling member 12 to move the rear end alignment member 30 in the discharge direction E1 to move the ends of the plurality of papers PS in the post-processing direction (81a) of the discharge section 81a. It is located adjacent to the end of E2). The ejector 80 moves along the discharge section 81a and pushes the ends of the plurality of sheets PS in the discharge direction E1. When the ejector 80 exceeds the end of the discharge section 81a in the discharge direction E1, the plurality of sheets PS are discharged to the discharge tray 95 and loaded.

When ejection of a plurality of sheets (PS) is completed and the next post-processing command is not input, the post-processing device switches to a standby state. When ejection of a plurality of sheets (PS) is completed, the control unit 200 may control the motor 201 to position the ejector 80 at the standby position 80b.

A control method of a post-processing device according to an example of the present disclosure includes the steps of positioning an ejector 80 capable of circulating in a first position and aligning a plurality of papers (PS) on a paper alignment tray 10, and post-processing. Performing a post-processing operation, for example, bookbinding, on the plurality of sheets (PS) using the processing member 20, and moving the ejector 80 from the first position to the second position to remove the plurality of sheets (PS). Discharging to the discharge tray 95 and moving the ejector 80 to a third position blocking the front opening 61 of the front cover 60 opposite the discharge tray 95. . As an example, the method of controlling the after-processing device may position the ejector 80 in the third position while the after-processing operation is not performed. The first position may be the home position 80a described above, and the third position may be the standby position 80b described above.

As an example, the first location and the third location may be different locations. In other words, as shown in FIG. 3, the home position 80a and the standby position 80b may be different positions. In this case, the home position sensor 202 can detect the ejector 80 located at the first position, that is, the home position 80a.

As an example, the first position and the third position may be the same position. In other words, as shown in FIG. 9, the post-processing device can be controlled by setting the standby position 80b as the home position 80a without a separate home position 80a. In this case, the home position sensor 202 can detect the ejector 80 located in the third position, that is, the standby position 80b.

The above examples are merely illustrative, and various modifications and other equivalent examples can be made by those skilled in the art. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the invention described in the following patent claims.

Claims (15)

a paper alignment tray in which at least one sheet of paper subject to post-processing is aligned;
a post-processing member that performs a post-processing operation on the paper;
an output tray on which the paper discharged from the paper alignment tray is loaded;
an ejector capable of circular movement to push and eject the paper on the paper alignment tray to the discharge tray;
It includes a front cover that faces the discharge tray and has a front opening to allow circular travel of the ejector,
A post-processing device wherein, when on standby, the ejector is positioned in a standby position in a position blocking the front opening. According to paragraph 1,
The ejector has a home position that allows alignment of the paper on the paper alignment tray. According to paragraph 2,
A post-processing device comprising a home position sensor that detects the ejector located at the home position. According to paragraph 2,
The post-processing device wherein the home position and the standby position are the same position. According to paragraph 2,
The post-processing device wherein the home position and the standby position are different positions. a paper alignment tray in which at least one sheet of paper subject to post-processing is aligned;
a post-processing member that performs a post-processing operation on the paper;
an output tray on which the paper discharged from the paper alignment tray is loaded;
an ejector capable of circular movement to push and eject the paper on the paper alignment tray to the discharge tray;
a motor driving the ejector;
a front cover facing the discharge tray and having a front opening to allow circular travel of the ejector;
A control unit that controls the motor to position the ejector in a standby position blocking the front opening during standby. According to clause 6,
A post-processing device having a groove position that allows alignment of the paper on the paper alignment tray. In clause 7,
A post-processing device comprising a home position sensor that detects the ejector located at the home position. In clause 7,
The post-processing device wherein the standby position and the home position are different positions. According to clause 9,
The control unit
Controlling the motor to move the ejector from the standby position to the home position,
A post-processing device that controls the post-processing member to perform post-processing work on the paper aligned on the paper alignment tray. According to clause 10,
When the post-processing work is completed, the control unit,
A post-processing device that controls the motor to cause the ejector to move circularly from the home position to discharge the paper into the discharge tray. According to clause 11,
When ejection of the paper is completed, the control unit controls the motor to position the ejector at the standby position. In clause 7,
The post-processing device wherein the home position and the standby position are the same position. In clause 7,
The control unit is a post-processing device that controls the post-processing member to perform post-processing work on the paper aligned on the paper alignment tray while the ejector is located in the standby position. According to clause 14,
When the post-processing work is completed, the control unit
A post-processing device that controls the motor to cause the ejector to run circularly from the standby position to discharge the paper into the discharge tray and return to the standby position.

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