JP3372284B2 - Sheet ejection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharging apparatus of a type in which a sheet such as a recorded sheet carried out from an image forming apparatus such as a copying machine or a printer is fed to a sheet tray by a movable distributor. .

[0002]

2. Description of the Related Art Generally, a sheet discharging device of this type is called a sorter / stacker, and a plurality of sheet trays are provided at a sheet discharging end of a main body of the device (sorter / stacker main body) so as to form an image. The sheet delivered from the apparatus is sequentially sent to each predetermined sheet tray by the distribution means. A normal sorter / stacker has a structure in which sheet trays are fixedly provided in multiple stages at regular intervals, but by attaching the above-mentioned sheet trays in a replaceable and detachable manner, the sheets in a specific sheet tray can be replaced. A sorter / stacker with a variable storage capacity is also known.

FIG. 13 is a view showing an example of a sorter / stacker in which the sheet storage capacity is made variable by detaching and replacing the sheet tray, which is cited from Japanese Patent Publication No. 60-52975. This sorter / stacker has a tray 1a and a tray 1b having different sheet storage capacities as shown in the figure, and the storage capacities of the sheet trays can be appropriately changed by exchanging them appropriately. .

FIG. 14 is a view showing an example of a sorter / stacker disclosed in Japanese Patent Laid-Open No. 6100376/1987. In this sorter / stacker, the storage capacity of the sheet tray 1 is made variable by removing or mounting the sheet tray 1 from the apparatus main body as required.

That is, in the illustrated example, the second stage from the bottom, 3
The sheet tray on the second row is removed, and the capacity of the sheet tray at the bottom is increased. Then, as shown in (a) to (c), depending on the stacking condition of the sheets S, the guide member 4 is operated in the order of 4a, 4b, and 4c to change the discharge position of the sheets S. . 14A to 14C and 14D, 2 is a sheet discharge end, 3 is a feed roller, and 5 is a sheet tray detector.

[0006]

As a method of using a printer as an image forming apparatus, there is a method of connecting one printer to a plurality of computers on a network and sharing the printer with a plurality of users. In this case, the sheet tray of the sorter / stacker attached to the printer is
It is often assigned as a dedicated seat tray for each user. For example, the first sheet tray is for Mr. A,
The second sheet tray is used exclusively for Mr. B. Hereinafter, such usage will be referred to as a mail mode. In such a mail mode use, in the conventional sorter / stacker in which a plurality of sheet trays are fixedly provided in multiple stages at fixed intervals, the storage capacity in one sheet tray is constant and cannot be changed. Often caused. That is, in the use in the mail mode, the degree of use of each sheet tray varies depending on the amount of work of the user, so that some persons may experience a shortage of the sheet tray storage capacity and others may have a sufficient storage capacity. . Conventional sorter shown in FIGS. 13 and 14 /
According to the stacker, it is possible to adjust the excess or deficiency of the storage capacity of the sheet tray due to the above difference in the degree of use. However, there were the following problems.

In the sorter / stacker shown in FIG. 13, for example, in order to increase the storage capacity of the sheet tray,
When the sheet tray 1b is used instead of the sheet tray 1a, as shown in FIG. 15A, the gap x between the discharge height position H1 of the sheet S and the height position H2 of the sheet receiving surface of the sheet tray D is x. Grows larger. For this reason, in an extreme case, as shown in FIGS. 15A to 15D, the discharged sheet S makes one rotation, and the front and back of the sheet S are reversed. In particular, the sheet S that has passed through the printer is generally prone to curl, and the phenomenon shown in FIG. 15 is likely to occur. In addition, the misalignment of the sheets S stacked on the sheet tray D due to the positional deviation becomes large, and the sheet storability deteriorates. In order to prevent such a problem, that is, in order to keep the sheet accommodating property good, it is an important factor to keep the gap x proper. Therefore, in the sorter / stacker shown in FIG. 13, it is substantially difficult to increase the storage capacity of the sheet S.

In the sorter / stacker shown in FIG. 14, since the discharge position of the sheet S is sequentially changed by the guide member 4, the storability of the discharged sheet S is guaranteed. However, a feed roller 3, a guide member 4, and a guide member drive source such as a solenoid (not shown) are required for each sheet tray 1. Further, FIG. 14 (d)
As shown in FIG. 5, a sheet tray detector 5 for detecting the presence or absence of the sheet tray 1 that is detachably operated is required for each sheet tray. For this reason, the conventional technique shown in FIG. 14 has a drawback that the device is complicated and expensive.

The present invention has been made in consideration of the above circumstances, and an object thereof is to increase or decrease the storage capacity of a sheet tray without deteriorating the sheet storage property, and moreover, it can be manufactured compactly and inexpensively. To provide a sheet discharging device. Another object of the present invention is to enable the sheet discharge port of the distributor to be quickly and accurately set to an appropriate sheet discharge position, and to reduce noise and to expect stable operation over a long period of time. To provide a device.

[0010]

In order to solve the above problems and achieve the object, the sheet discharging apparatus of the present invention is as follows.
Is configured . (1) The sheet discharging device of the present invention comprises a mounting means for selectively detachably mounting the sheet tray to a plurality of tray mounting portions provided at the sheet discharging end of the sheet discharging device body, and the plurality of trays. Multiple seats mounted on the mounting part
Transfer the sheet to the tray so that it can be distributed and discharged.
Dynamic distributor and attached to this mobile distributor
Sure location of the seat pan mounted by means
The sheet discharged from the sheet tray is
A recognition unit having a sensor capable of detecting whether or not the printer is full , and the transfer is performed based on the recognition result of the recognition unit.
The movement of the dynamic distributor is controlled so that the sheet tray is seated.
A sheet discharging apparatus for discharging the door, said recognition means
By scanning the sensor,
Provided so that the location of the sheet tray can be recognized
It is characterized by being.

(2) The sheet discharging device of the present invention is as described above.
The sheet discharge device according to (1), wherein the recognition means
Stops the mobile distributor in place and
The discharged sheets are full against the worn sheet tray
It is characterized in that it is provided so as to detect whether or not . (3) The sheet ejection device of the present invention is a sheet ejection device main body.
For multiple tray mounting parts provided at the sheet discharge end of
Mounting means for selectively and detachably mounting the sheet tray
And a plurality of seats mounted on the plurality of saucer mounting portions
Transfer the sheet to the tray so that it can be distributed and discharged.
A dynamic distributor and the seat mounted by the mounting means.
The location of the tray is attached to the mobile distributor.
A recognition means for recognizing with a sensor is provided.
Based on the knowledge, control the movement of the mobile distributor.
Sheet discharging device for discharging sheets to the sheet tray.
And the sensor is the mounted sheet receiver.
Move the sensor down until the top sheet position on the plate is detected.
The movable type based on the detection output of the sensor.
Place the distributor at a predetermined height from the detection position of the top sheet.
Characterized by having an automatic tracking means to raise
There is.

[0012]

[0013]

[0014]

[0015]

1 (a) and 1 (b) are a perspective view and a side view of essential parts showing a state in which a sorter / stacker 6 according to an embodiment of the present invention is attached to a printer 7 as an image forming apparatus. 2A and 2B show a state in which a part of the sheet tray is removed and the storage capacity is changed and set. Figure 1
As shown in (a) and (b) of FIG.
Up to 10 sheet trays 8 (8 ₁ to 8 ₁₀ ) are mounted at equal intervals and used. in this case,
The number of sheets that can be stored per one sheet tray is, for example, 30. In FIG. 2A, the intermediate sheet tray shown by the broken line is removed, and seven sheet trays 8 are provided.
The state is set to have (8 ₁ to 8 ₇ ). Further, in FIG. 2 (b) leaving only the seat pan 8 ₁ at the bottom, showing a state in which to remove any other sheet pan. In this case, the number of sheets that can be stored is 1500 sheets, which has a function as a large-capacity stacker.

FIG. 3 is a side sectional view showing the internal structure of the sorter / stacker 6. As shown in the figure, this sorter / stacker 6 is a movable (elevating) distributor 1 for a sheet (not shown in the figure) such as recorded paper carried out from a printer 7.
0, it is provided so as to be distributed and discharged to a plurality of (10 in this embodiment) sheet trays 8 ₁ to 8 ₁₀ . Each of the sheet trays 8 ₁ to 8 ₁₀ can be selectively attached to a plurality of tray attachment portions 6 a provided at the sheet discharge end of the sorter / stacker 6. The sheets to be carried out from the printer 7 are accumulated in the stacker section in the printer when the exit gate 11 is closed. Gate 11
When the sheet is open, the sheet is fed by the feed roller 9 as shown by the arrow and introduced into the sorter / stacker 6. Inside the sorter / stacker 6, a flat belt 12 for transferring the introduced sheet is stretched between the reels 13a and 13b. A wire reel 14 for winding up and feeding out one end of the wire 15 is installed near the sheet introduction port of the sorter / stacker 6. The other end of the wire 15 is provided with a distributor 10 via a spring 16.
Is attached to. That is, the wire 15 is stretched between the wire reel 14 and the distributor 10. The moving amount of the distributor 10 is set in such a relationship that the winding amount of the wire 15 by the wire reel 14 and the feeding amount thereof are the same. A transfer start sensor 1 for confirming transfer start is provided near the sheet introduction port of the sorter / stacker 6.
7 is provided. Further, the distributor 10 is provided with a transfer end sensor 18 for confirming the end of sheet transfer. The sorter / stacker 6 performs general processing such as paper jam detection based on signals from these sensors 17 and 18. Distributor 1
0 is provided with a discharge roller 19 serving as a discharge port for discharging the sheet toward the sheet trays 8 ₁ to 8 ₁₀ . In the vicinity of the roller 19, a discharge sensor 20 is provided mainly for detecting that the sheets stored in the sheet tray 8 are full. The distributor 10 is driven up and down along a guide 6b provided on the side wall of the sorter / stacker 6 by a distributor lifting mechanism described below.

FIG. 4 is a perspective view showing the structure of the distributor lifting mechanism. As shown in the figure, the distributor 10 has its both ends fixed to the timing belts 21a and 21b so that the whole is in a horizontal state. Thus the distributor 10
Is raised or lowered by the timing belts 21a and 21b which are rotated by the forward / reverse control of the motor 22. The bottom sensor 23 is a sensor that detects that the distributor 10 has descended to the lower limit position. Also,
Code wheel 2 attached to belt drive shaft 24
Reference numeral 5 is a disc having a notch, and the notch is detected by the wheel sensor 26. When the motor 22 is stopped when the wheel sensor 26 detects the cutout position, the discharge roller 19 of the distributor 10 is set to match the vicinity of the sheet discharge port of the apparatus body.

FIG. 5 is a diagram showing the positional relationship between the sheet discharge end of the sorter / stacker 6 and the discharge portion sensor 20 attached to the distributor 10. The sheet tray 8 is not shown in the figure for simplification of description. Partition 27
Is provided with ten discharge windows 28 for discharging sheets from the distributor 10. This partition 27
Strip-shaped members 29a to 29d are attached on the top. These members 29a to 29d are members for preventing sheets from entering the discharge window 28 when it is set to increase the storage capacity of a specific sheet tray by removing some sheet trays. The discharge sensor 20 provided in the distributor 10 includes a cutout portion 28 provided in the discharge window 28.
The sheet and the sheet tray are detected through a. That is, the discharge portion sensor 20 receives the reflected light from the upper surface of the sheet accumulated on the sheet tray to detect the sheet and is also used to detect the installation state of the sheet tray that is selectively attached. .

6A to 6C show the discharge portion sensor 20.
FIG. 6 is a diagram illustrating the principle of sheet detection and sheet tray detection according to the present invention. The position of the sensor 20 shown by the solid line in FIG. 6A is the sensor position when the distributor 10 ejects the sheet. At this time, the distributor 10 is stopped.
At this position, the discharge portion sensor 20 detects a point P on the upper surface of the sheet S as indicated by an arrow in FIG. 6B, and functions as a full sensor. The position of the discharge sensor 20 'shown by the dotted line in FIG. 6A is the sensor position when detecting the presence of the sheet tray 8 that is selectively mounted. As shown by the arrow in (c) of FIG. 6, in the scanning operation of the discharge portion sensor 20 before the start of use, the sensor 20 performs the detection operation of the point Q at the timing when the sensor 20 comes to the above-mentioned dotted line position, so that the sheet tray 8 Check for.

FIG. 7 is a block diagram showing the structure of the electric system. A portion surrounded by a chain double-dashed line is a control unit 30 of the sorter / stacker 6 including a judgment circuit 32. Sorter /
The stacker 6 and the printer 7 exchange information by transmitting and receiving data via the transmission line 34. When the detection results of the wheel sensor 26, the discharge unit sensor 20, and the bottom sensor 23 described above are input to the control unit 30, the detection input is input to the determination circuit 32 via the input / output interface 31. The judgment circuit 32 makes an appropriate judgment based on the input information input from each sensor, and outputs a control signal indicating the judgment result. This control signal is given to the distributor drive motor 22 via the input / output interface 33. Thus, the drive control of the motor 22 is performed.

Next, the operation of the sorter / stacker 6 of this embodiment constructed as described above will be described. Particularly, as shown in FIG. 2A, the operation when seven sheet trays 8 are attached will be described with reference to the timing chart of FIG. 8 and the flow chart of FIG.

FIG. 8 shows the existence position (presence or absence) of the sheet tray 8
It is a figure which shows the operation timing at the time of detecting. As shown in the figure, at time t1 when the power is turned on, the distributor driving motor 22 is rotated in the reverse direction to move the distributor 10 downward. When the distributor 10 descends to the lower limit position at the time point t2, the bottom sensor 23 is turned on. When the bottom sensor 23 is turned on, the distributor drive motor 22 stops rotating. At a time point t3 when a certain time has elapsed, the distributor driving motor 22 starts the forward rotation in the direction of raising the distributor 10. Distributor 1
The output of the discharge sensor 20 is checked at time t5 after a lapse of T1 seconds from time t4 when the bottom sensor 23 is turned OFF and when the bottom sensor 23 is turned off. In this example, the output tray sensor 20 is turned on because the lowermost sheet tray 8 ₁ is mounted. Next, at time t6, at time t2 seconds after the output of the wheel sensor 26 is turned ON,
At 7, the output of the discharge sensor 20 is checked again. In this case also, since the sheet tray is present, the output of the discharge sensor 20 is turned on. The timings of the time points t5, t7, ... Are the positions of the discharge portion sensor 20 'shown by the dotted line in FIG. Thereafter, the same check is performed up to the uppermost stage, so that the mounting state of the sheet tray 8 is recognized. The result of this recognition is as follows, and it is confirmed that the mounting condition of the sheet tray is as shown in FIG. 2 (b).・ Sheet discharge port 10th stage… Detection result ON = Sheet tray is present ・ Sheet discharge port 9th stage… Detection result OFF = Sheet not received tray ・ Sheet discharge port 8th stage… Detection result ON = Sheet tray ・ Sheet discharge port 7 Stage: Detection result ON = Sheet tray is present / Sheet discharge port 6th stage: Detection result is ON = Sheet tray is present / Sheet discharge port 5th stage ... Detection result OFF = Sheet is not tray / Sheet discharge port 4th stage ... Detection result ON = Sheet tray is present ・ Sheet outlet 3rd stage ... Detection result OFF = Sheet tray is not present ・ Sheet outlet 2nd stage ... Detection result ON = Sheet tray is 1st ・ Sheet outlet 1st stage ... Detection result ON = Sheet tray is present

FIG. 9 is a flow chart showing the procedure of the above-mentioned sheet tray check operation, and FIG. 10 is a diagram showing the same subroutine. The above operation may be performed not only when the power is turned on, but also whenever a check operation command is given.

Next, the operation of the sorter / stacker 6 after the sheet tray check operation will be described. For example, when a user creates a document with a word processor and outputs a print sheet to a sheet tray assigned to him,
First, specify your own sheet tray from the terminal, and then carry out the printed sheet. The distributor 10 moves to the discharge window 28 corresponding to the designated sheet tray, and then discharges the predetermined sheet to the sheet tray through the discharge window. The movement of each part in this case will be described. When the sorter / stacker 6 receives a designation command for the sheet tray 8, the distributor 10 causes the discharge window 2 corresponding to the designated sheet tray.
Move to the position facing 8. When the printer 7 outputs a carry-out signal in the process of carrying out the sheet, the carry-out signal is given to the sorter / stacker 6. Then, subsequently, the gate 11 is opened by a link mechanism driven by a solenoid (not shown). The sheet sent by the feed roller 9 of the printer 7 is deflected in direction by the gate 11 in the opened state, and is guided into the sorter / stacker 6. The sheet guided into the sorter / stacker 6 is sandwiched between the wire 15 stretched between the wire reel 14 and the distributor 10 and the wire stretched on the flat belt 12 side to move the flat belt 12. Is transferred toward the distributor 10. The leading end of the sheet that has reached the distributor 10 is deflected in the sheet discharge direction by the guide portion of the distributor 10. Then, this sheet is output from the discharge roller 19 of the distributor 10.
The sheet is discharged to the sheet tray 8 via.

For example, Mr. A has a sheet tray 8 ₆ for the sixth tier.
Will be described more specifically by taking as an example the case where is assigned. First, Mr. A has his own dedicated sheet tray 8 ₆
Is specified, this command causes the distributor 10 to move from the current position to a position where the sheet discharge port faces the sixth-stage sheet tray 8 ₆ . After this movement is performed, the discharge sensor 20 checks whether or not the sheet tray 8 ₆ is full. If it is full, the information that the sheet tray 8 ₆ is full and cannot be output is returned to Mr. A. For this reason, Mr. A goes to the sorter / stacker 6 and receives the 6th sheet tray 8 ₆
The sheets accumulated in are to be removed. When the sixth-stage sheet tray 8 ₆ is not full, the sorter / stacker 6 is in the ready state, and the sheets delivered from the printer 7 are received.

FIG. 11 is a diagram for explaining the control operation of the distributor 10 when a part of the sheets S accumulated in the large capacity sheet tray Dx is removed, and FIG. 12 is a procedure of the control operation. FIG. The large-capacity sheet tray Dx increases the storage capacity of a single sheet tray by leaving only the lowermost sheet tray and removing all other sheet trays. Now, the sheets S accumulated up to the state of FIG.
It is assumed that most of them have been removed. In such a case, if the distributor 10 stays at the position until then, the fall distance of the sheet S becomes long, so that the problem described in FIG. 15 occurs and the storability deteriorates. However, in this embodiment, the sheet discharge port of the distributor 10 automatically follows the sheet accumulation state, and the proper sheet discharge position is quickly and accurately recovered and maintained. That is, when the sorter / stacker 6 is given a command indicating that a sheet is to be discharged from the printer 7, the sorter / stacker 6 lowers the distributor 10 from the current position by one pitch at a pitch suitable for the sheet thickness.
The presence or absence of the sheet S is detected by the discharge unit sensor 20. As a result, if the sheet S is detected, the distributor 10 is raised by one step to bring the distributor 10 to the proper sheet discharging position. Sheet S
If the sheet S is not detected, the distributor 10 is lowered to the position where the sheet S is further detected. Then, the sheet S is moved up one step from the detected position to the proper sheet discharging position. The number of stages for raising the distributor 10 from the position where the sheet S is detected is not necessarily limited to one stage, and may be two or three stages as required. In short, it suffices to raise the sheet discharge port of the distributor 10 to a height at which the sheet is discharged to the proper sheet discharge position with respect to the sheet stacking upper surface. The present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0027]

According to the present invention, the sheet tray can be selectively mounted at a desired position in the tray mounting portion of the apparatus main body, and the position of the mounted sheet tray is automatically determined. Since the sheet is sent by the mobile distributor to the required sheet tray that has been recognized, it is possible to increase or decrease the storage capacity of the sheet tray without deteriorating the sheet accommodation ability. Further, it is possible to provide a compact sheet discharge device that has a small number of constituent parts and can be manufactured at low cost.

Further, according to the present invention, the vehicle is stopped at a predetermined position.
With the sensor of the mobile distributor,
It is detected whether the discharged sheet is full. Therefore
The sheet is properly discharged to the specified sheet tray.
It Further, according to the present invention, since the movable distributor automatically follows the sheet accumulation state and the proper sheet discharging position is quickly and accurately recovered and maintained, for example, the sheet is accumulated in a large-capacity sheet tray. Even if part of the seat is removed, the mobile distributor can be quickly lowered.
Then, at the position where the sensor detects the uppermost sheet position, the control shifts to the ascending control, and a slight ascending operation is performed to control the proper sheet discharging position. Therefore, the sheet discharge port of the movable distributor can be quickly and accurately set to the proper sheet discharge position, and the sheet discharge device can be provided with less noise and stable operation over a long period of time.

[Brief description of drawings]

1A and 1B are a perspective view and a side view of essential parts showing a state where a sorter / stacker according to an embodiment of the present invention is attached to a printer as an image forming apparatus.

2A and 2B are views showing a state in which a part of the sheet tray of the embodiment is removed and the storage capacity is changed and set.

FIG. 3 is a side sectional view showing an internal configuration of a sorter / stacker according to the embodiment.

FIG. 4 is a perspective view showing a configuration of a distributor / lifter mechanism of the sorter / stacker according to the embodiment.

FIG. 5 is a diagram showing a positional relationship between the sheet discharge end of the sorter / stacker and the discharge unit sensor attached to the distributor according to the embodiment.

6A to 6C are explanatory views of the principle of sheet detection and sheet tray detection by a sorter / stacker discharge unit sensor according to the embodiment.

FIG. 7 is a block diagram showing a configuration of an electric system of the sorter / stacker according to the embodiment.

FIG. 8 is a view showing an operation timing when the sheet tray existing position (presence / absence) of the sorter / stacker according to the embodiment is detected.

FIG. 9 is a flowchart showing a procedure of a sheet tray check operation of the sorter / stacker according to the embodiment.

FIG. 10 is a flowchart showing a subroutine of sheet tray check operation of the sorter / stacker according to the embodiment.

FIG. 11 is a view for explaining a control operation of the distributor when a part of the sheets accumulated in the large capacity sheet tray of the sorter / stacker according to the embodiment is removed.

FIG. 12 is a flowchart showing a procedure of control operation corresponding to FIG. 11.

FIG. 13 is a diagram showing an example of a conventional sorter / stacker.

FIG. 14 is a diagram showing another example of a conventional sorter / stacker.

FIG. 15 is a diagram showing a problem of the conventional sorter / stacker shown in FIG.

[Explanation of symbols]

6 ... sorter / stacker 6a ... pan mounting portion 7 ... printer 8 (8 _{1-8 10)} ... seat pan 9 ... feed roller
10 ... Distributor 11 ... Exit Gate 12 ... Flat Belt 13
a, 13b ... Reel 14 ... Wire reel 15 ... Wire 16
... Spring 17 ... Transfer start sensor 18 ... Transfer end sensor 19
Ejection rollers 20, 20 '... Ejection sensor 21a, 21b ... Timing belt 22 ... Distributor drive motor 23 ... Bottom sensor 24 ... Belt drive shaft 25 ... Code wheel 26 ... Wheel sensor 27 ... Partition 28 ... Ejection window 28a ... Cutting Notches 29a to 29d ... Strip-shaped member S ... Sheet Dx ... Large capacity sheet tray

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65H 39/11 B65H 31/22 B65H 31/24 G03G 15/00 530

Claims (3)

(57) [Claims] 1. A mounting means for selectively and removably mounting a sheet tray to a plurality of tray mounting portions provided at a sheet discharging end of a sheet discharging device main body, and the plurality of tray mounting portions. Multiple sheet receivers
A mobile type that can distribute and discharge sheets to the plate
And distributor, this is attached to a mobile distributor, it is possible to recognize the presence position of the seat pan mounted by said mounting means
In both cases, whether the sheets discharged to the sheet tray are full or not
Recognizing means having a sensor capable of detecting whether or not the movement is performed based on the recognition result of the recognizing means.
Control the movement of the distributor
A sheet discharging device for discharging the sheet, the recognizing unit causing the sensor to perform a scanning operation.
The position of the sheet tray
The sheet ejection device is characterized by being installed . 2. The recognizing means sets the movable distributor to a predetermined size.
Stop at the position of
Is installed to detect whether the discharged sheet is full.
Sheet discharging device according to claim 1, characterized in that they are. 3. A sheet discharge device body is provided at a sheet discharge end.
Select the sheet pan for multiple pan mounting parts
Mounting means for detachably mounting and a plurality of sheet receivers mounted on the plurality of tray mounting portions
A mobile type that can distribute and discharge sheets to the plate
Presence of a distributor and the sheet tray mounted by the mounting means
The position is recognized by a sensor attached to the mobile distributor.
Recognizing means, which is based on the recognition result of the recognizing means.
Control the movement of the distributor
A sheet discharging device for discharging the sheet, wherein the sensor is the uppermost portion on the mounted sheet tray.
The sensor is lowered until the sheet position is detected , and the movable distributor is based on the detection output of the sensor.
From the detection position of the uppermost sheet to a predetermined height.
A sheet discharging device having an automatic follow-up device for raising .