JPH08133502A - Paper feed device - Google Patents

Abstract

PURPOSE: To surely detect a paper sheet and feed the paper sheet without being influenced from the deformed condition of the loaded paper sheet such as curl or crease, in a paper feed device. CONSTITUTION: This paper feed device is provided with a pressing means 25 pressing a loaded paper sheet on a conveyor belt 14, and a detecting sensor 48 for existence of paper detecting the paper sheet on the conveyor belt 14 nearby the paper sheet pressing position of the pressing means 25. Further it is provided with a drive control means judging existence of the paper sheet on the conveyor belt 14 based on the detected result of the paper existence detecting sensor 48 after putting the loaded paper sheet into the pressed condition by means of the pressing means 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper processing apparatus for supplying shredded paper, transfer paper, copy paper, etc., for shredding, transferring, copying, etc. Applicable. More specifically, the present invention relates to a sheet feeding device that is used by being attached to such a sheet processing device and that feeds stacked sheets to the sheet processing device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9, for example, a tray 1 having a right side inclining upward in the drawing is provided in a sheet feeding device of this type, and a conveyor belt is provided along the inclination of the tray 1. 2 is provided between the pulleys 3 and 4, and a pressurizing means 5 is provided on the front upper side of the conveyor belt 2 in the paper conveyance direction A, and a paper presence / absence detection sensor 6 is installed toward the paper conveyance path on the conveyance belt 2. There is something I did.

When the paper is fed, the paper P is placed on the conveyor belt 2.
Paper is loaded, and the loaded paper P is detected by the paper presence / absence detection sensor 6, and then the pressing means 5 is operated to load the loaded paper P from above.
Then, the carrying belt 2 was operated and the stacked sheets P were sequentially fed out from below.

[0004]

By the way, in such a conventional paper feeding device, the stacked paper P is deformed in a state in which the paper is greatly curled or is deformed due to, for example, a crease as shown in FIG. When the is placed on the conveyor belt 2,
The presence of the paper P may not be detected by the paper detection sensor 6. Therefore, there is a problem that the paper feeding cannot be started.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to reliably detect and feed a sheet in a sheet feeding device of this type without being affected by the deformation state of the stacked sheets such as creases. To enable.

[0006]

Therefore, the structure described in claim 1 is, for example, as shown in the following illustrated embodiment,
In the paper feeding device 12 that presses the placed stacked paper P by the pressing means 25 and sends it out by the paper conveying means such as the conveying belt 14, like the paper presence / absence detecting sensor 48 for detecting the paper P on the paper conveying means. The paper detection means is the pressing means 2
5 is provided in the vicinity of the paper pressing position a, and the pressurizing means 25 presses the stacked paper P to determine the presence or absence of the paper P on the paper conveying means based on the detection result of the paper detecting means. When there is a sheet P, the sheet conveying means is driven, while when there is no sheet P, there is provided drive control means for releasing the pressing state of the stacked sheets P by the pressing means 25.

According to a second aspect of the present invention, for example, as shown in the following illustrated embodiment, the sheet feeding device 1 according to the first aspect is described.
2, the apparatus main body 13 is provided with an opaque safety cover 22 that covers the sheet conveying means so as to be openable and closable, and a cover opening / closing detection means such as a cover opening / closing detection sensor 23 that detects opening / closing of the safety cover 22. Provided with drive control means for activating the pressing means 25 and moving to the paper pressing position a only when the paper feed start switch is first turned on after the power switch 20 is turned on or after the safety cover 22 is opened / closed. It is characterized by

According to a third aspect of the present invention, for example, as shown in the following illustrated embodiment, the sheet feeding device 1 according to the second aspect is as follows.
In FIG. 2, when the paper feed start switch is first turned on after the power switch 20 is turned on or after the safety cover 22 is opened / closed, there is a display panel 42 for notifying that there is no paper on the paper transporting means. It is characterized by comprising an informing means.

[0009]

In the paper feeding device 12 according to the first aspect of the present invention, when the paper feeding device 12 is used, after the stacked paper P is pressed by the pressing means 25,
The presence / absence of the sheet P on the sheet conveying means is determined based on the detection result of the sheet detecting means. When the sheet P is present, the sheet conveying means is driven, while when it is not present, the pressing state of the stacked sheets P by the pressing means 25 is released. .

In the paper feeding device 12 according to the second aspect of the present invention, when the paper feeding device 12 is used, the power switch 20 is turned on or the safety cover 2 is used.
Only when the paper feed start switch is turned on for the first time after the opening / closing operation of 2, the pressing means 25 is operated to move to the paper pressing position a.

According to the third aspect of the present invention, when the paper feed start switch is first turned on after the power switch 20 is turned on or after the safety cover 22 is opened / closed, when there is no paper P on the paper conveying means. Is notified by notification means.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic configuration diagram showing an internal mechanism of a shredder equipped with a sheet feeding device according to an embodiment of the present invention.

Reference numeral 10 in the figure denotes a shredder body.
The shredder main body 10 has a vertically long box shape, and a manual paper feeding input port 10a is opened on the upper left side in the figure, and a loading guide 10b is provided obliquely downward to the right from the loading port 10a. The paper feed path 10c is formed in the. Then, the paper detection sensor 60 is provided in the paper feed path 10c. Therefore, the cutter 11 is installed at the tip of the paper feed path 10c, and the cutter 11 is driven based on the detection of the leading edge of the paper by the paper detection sensor 60. Then, the paper feeder 12 of the present invention is attached to the upper part of the shredder body 10.

The paper feeding device 12 can be appropriately attached to a plurality of types of shredder main bodies. Then, the paper feeding device 1
2, a tray 13a is provided on the upper side of the apparatus main body 13 with its front side (left side in FIG. 2) inclined downward by, for example, about 30 degrees, and opposite side plates 13b.
13c is provided. As shown in FIGS. 2 and 1, the tray 13a has an opening 13d formed in the sheet conveying direction A, and the conveying belt 14 is arranged with the upper side exposed through the opening 13d. The conveyor belt 14 is stretched between the pulleys 15 and 16 supported by the opposite side plates 13b and 13c, respectively. Below the pulley 16 on the front side, the paper feeding motor 1 is provided.
7 is provided. The paper feed motor 17 has a pulley 18 attached to its drive shaft 17a. Then, with the pulley 18,
A transmission belt 19 is provided substantially horizontally between pulleys (not shown) attached to the shaft of the pulley 15 on the front side of the conveyor belt 14.

Further, as shown in FIG. 1, the apparatus main body 13 is provided with a power switch 20 on the outside of one side plate 13b. An opaque safety cover 22 that covers the conveyor belt 14 is openably and closably attached to the other side plate 13c. A cover opening / closing detection sensor 23 for detecting opening / closing of the safety cover 22 is attached to the upper side of one side plate 13b. As the cover opening / closing detection sensor 23, a micro switch, a photo sensor, or the like is used.

Further, inside the side plates 13b and 13c, a pair of side guides 21 for restricting the stacking position of the stacked sheets P on the tray 13a are provided facing each other. The side guides 21 are provided so as to be movable in association with each other in a direction parallel to the paper transport direction A and orthogonal to the paper transport direction A. The space between the side guides 21 can be adjusted according to the size of the paper.

Further, in the apparatus main body 13, a horizontally long box-shaped storage cover 24 is provided between the front upper sides of the opposite side plates 13b and 13c, and a pressing means 25 is provided in the storage cover 24. As shown in FIG. 2, the pressing means 25 includes a pressing plate assembly 27 that can move up and down. In addition, a pressurizing motor 28 provided substantially in the center of the apparatus main body 13, a worm 30 provided on the drive shaft of the pressurizing motor 28, and a worm wheel 31 meshing with the worm 30 are provided. Further, a transmission belt 32 that is wound around a pulley 31 a coaxial with the worm wheel 31 and a drive pulley 33.
And a shaft 35 of the drive pulley 33, a wire 35, and the like, which are stretched between the drive pulley 33 and a driven pulley 34 fixed at a position separated from the drive pulley 33. The wire 35 is attached to the pressure plate assembly 27. The pressure plate assembly 27 is initially retracted to the top dead center so that the stacked sheets P can be stacked on the tray 13a on the lower side thereof.

As shown in FIGS. 3 and 4, the pressure plate assembly 27 includes a pressure upper plate 27a having an inverted U-shaped cross section and a pressure lower plate 27b having a U-shaped cross section in a predetermined upper and lower range. A plurality of springs 36 that are movably combined and that urge them in a direction in which they are separated from each other, and a pressure detection sensor 3 that is operated by the pressure lower plate 27b.
7 and 7 are arranged by being supported by the pressing upper plate 27a. And
The mounting strength of the spring 36 is set to, for example, 3 to 5 kg. Therefore, the operation of the pressurizing motor 28 is controlled by turning on and off the pressurizing sensor 37.

That is, when the pressure plate assembly 27 presses the stacked sheets P with a predetermined pressure, as shown in FIG.
The lower pressure plate 27b is pushed up against the spring 36, the pressure detection sensor 37 is turned on, the pressure motor 28 is turned off, and the lowering of the pressure plate assembly 27 is stopped. Since the pressurizing motor 28 inertially rotates for a while even when it is turned off, the pressurizing detection sensor 37 is further pushed into the actuator 37a within the range of overtravel. Then, when the stacked sheets P decrease, the spring 36
As a result, the pressure lower plate 27b is pushed down, and the actuator 37a of the pressure detection sensor 37 returns to a position beyond the release position, whereby the sensor 37 is turned off. Then, the pressurizing motor 28 is turned on, and the pressurizing plate assembly 27 descends until the pressurization detecting sensor 37 is turned on again. Therefore, the pressure plate assembly 27 always presses the stacked sheets P within a constant pressure range, and prevents the sheet conveying force from decreasing and the sheet not to be fed.

Further, the pressurizing means 2 is provided in the apparatus main body 13.
A paper presence / absence detection sensor 48 is installed between the conveyance belts 14 near the paper pressing position a of the pressure plate assembly 27 of No. 5, as shown in FIG. As the paper presence / absence detection sensor 48, for example, a micro switch or a photo sensor is used.

In the apparatus main body 13, the front side between the opposite side plates 13b and 13c is covered with a lateral cover 39 as shown in FIG. 2, and the lateral cover 39 is covered with the opposite side plate portion for paper jam processing or the like. A support shaft (not shown) is appropriately supported on the upper front side of 13b and 13c so as to be openable and closable. Side cover 3
9, the plate-shaped metal holder 41 is attached to the pressurizing means 25 side via the attachment portion 41a.

The holder 41 is formed by bending the lower end thereof into an L shape, and the regulating member 40 is attached to the lower end thereof.
Then, a gap g is formed between the regulation member 40 and the tray 13a. The holder 41 can be automatically moved up and down by a gap adjusting mechanism (not shown) including a gap control motor and the like to adjust the size of the gap g.

Thus, in the sheet feeding device 12, a curved sheet conveying path 43 is formed from the position where the gap g is provided, that is, from the sheet feeding start position B to the sheet feeding path 10c, and the curved sheet conveying path 43 is formed. Conveying rollers 44 are provided, and a conveying roller 55 is provided at the tip of the sheet conveying path 43.

Next, FIG. 6 shows the electrical construction of the paper feeding device 12. The paper feeding device 12 is entirely controlled by a microcomputer. Microcomputer C
The PU 45 determines, for example, whether the pressure detection sensor 37 is on or off, and drives the pressure motor 28 by the driver circuit 4.
Control 6 When the paper P is jammed in the paper transport path 43, the jam detection sensor 47 detects it. The presence / absence of the paper P on the tray 13a is detected by the paper presence / absence detection sensor 48, and the fact that the pressure plate assembly 27 is retracted to the top dead center is detected by the top dead center sensor 49. The opening / closing of the safety cover 22 is detected by the cover opening / closing detection sensor 42.
Further, the paper feeding device 12 is an outlet 5 for the shredder body.
0 electrically connects to the shredder main body 10 so that the current detection sensor 51 can detect that the shredder main body 10 is overloaded and stopped. Then, the solid state relay (SS
AC 100 V is supplied to the shredder main body 10 via the R) 53.

By the way, the sheet feeding device 12 holds the stacked sheets P by the pressing plate assembly 27 of the above-mentioned pressing means 25, and then presses the stacked sheets P on the conveying belt 14 based on the detection result of the sheet presence / absence detecting sensor 48. A drive control unit (not shown) that determines the presence / absence of the sheet and operates the sheet feeding motor 17 to drive the conveyor belt 14 when there is a sheet, and releases the holding state of the stacked sheet P by the pressure plate assembly 27 when there is no sheet
Is provided.

Further, when the paper feed device 12 is attached to a plurality of models of the drive control means and the distance from each paper feed start position (b) to the paper detection sensor position (a) in the shredder body 10 is the longest. In consideration of at least the paper P
A function of intermittently stopping the operation of the paper feed motor 17 is provided until the leading edge of the sheet passes the sheet detection sensor position B. Although not shown, the drive control means has an intermittent number counter that counts the number of times the paper feed motor 17 is intermittently stopped.

In the illustrated shredder, when the paper P is shredded, the power switch 20 is normally pressed to turn on the power, and the paper P is fed to the tray 13 as shown by the chain line in FIG.
Load on a. Then, the side guide 21 is moved according to the width size of the stacked sheets P, and the side guide 2 is moved.
1 is applied to the side edge of the stacked sheets P. Then, the sheet feeding start switch (not shown) is pushed to start.

Paper feed control performed by the microcomputer will be described below with reference to the flow chart of FIG.

First, in step S1, it is determined whether or not the paper feed start switch is turned on, and if it is determined that it is not turned on, the operation of step S1 is performed until it is turned on. When it is determined that the pressure plate motor 27 is turned on, the pressurizing motor 28 is turned on to lower the pressurizing plate assembly 27 in step S2, and then step S3
Proceed to. In step S3, it is determined whether or not the stacking sheet P is being pressed by the pressure plate assembly 27.
If it is determined that the pressure is not applied, the operation of step S3 is repeated. When it is determined that the pressure is applied, the process proceeds to step S4, the pressing motor 28 is turned off to stop the descent of the pressure plate assembly 27, and then the process proceeds to step S5.

Then, in step S5, it is first judged by the paper presence / absence detection sensor 48 whether or not there is a paper P on the tray 13a. If it is determined that there is no paper, step S
6, the pressurizing motor 28 is turned on to raise the pressurizing plate assembly 27, and in step S7, the top dead center sensor 49 determines whether or not the pressurizing plate assembly 27 is at the top dead center. Then, when it is determined that it is not at the top dead center, the process returns to step S6, and step S6 is performed until the top dead center is evacuated.
・ Repeat the operation of 7. When it is determined that the pressure is at the top dead center, in step S8, the pressurizing motor 28 is turned off, the ascending operation of the pressurizing plate assembly 27 is stopped, and the step S1 is performed.
Return to.

If it is determined in step S5 that there is paper, the process proceeds to the next step S9, the paper feed motor 17 is turned on to rotate the conveyor belt 14, and paper feed is started from the paper feed start position b. .

In the next step S10, the intermittent frequency counter is cleared to 0, and then the process proceeds to step S11. In step S11, it is determined whether or not a predetermined N seconds have passed since the paper feed motor 17 was turned on. When it is determined that N seconds have not passed, the operation of step S11 is repeated. When it is determined that N seconds have elapsed, the process proceeds to step S12, the paper feed motor 17 is turned off, and the paper feed is stopped. Then, in the next step S13, it is determined whether or not a predetermined M seconds have elapsed after the feeding motor 17 was turned off. When it is determined that M seconds have not elapsed, the operation of step S13 is repeated. . When it is determined that M seconds have elapsed, the process proceeds to step S14, the paper feeding motor 17 is turned on again to convey the paper P, and the process proceeds to step S15.

Then, in step S15, the intermittent frequency counter is incremented by +1. In the next step S16, the intermittent frequency counter is checked to determine how many times the intermittent operation stop of the paper feeding motor 17 is repeated and the number of times. Confirm. Then, when the number of times has not reached the predetermined number (for example, three times), the process returns to step S11 and is repeated until the number of times reaches three. By repeating this operation stop, the speed at which the leading edge of the sheet P passes the sheet detection sensor position B and reaches the cutter 11 is delayed. Then, when the leading edge of the paper P passes the paper detection sensor position B, the intermittent operation stop of the paper feed motor 17 is released, and the intermittent count counter is cleared to 0 in step S17. Then, continuous paper feeding is performed.

On the other hand, when the leading edge of the sheet P is detected by the sheet detecting sensor 60 at the sheet detecting sensor position B, the cutter 11 is driven. Then, the sheets to be continuously fed are successively shredded by the cutter 11, and although not shown, the shredded paper dust is compressed.

Further, when performing continuous paper feeding, as shown in FIG. 7, in step S18, the paper presence sensor 48 determines whether or not all the paper P on the tray 13a has been fed. When it is determined that the sheet P is present, in the next step S19, the pressure detection sensor 37 determines whether or not the stacked sheet P is in the pressure state by the pressure plate assembly 27, and the pressure state is set. If it is determined that there is not, step S2
0, the pressurizing motor 28 is turned on, and step S19
Until it is determined that the pressurizing state is in step S19.20.
Repeat the operation of. When it is judged that it is under pressure,
The process proceeds to step S21, the pressurizing motor 28 is turned off, and step S1 is performed until it is determined in step S18 that there is no paper.
The operations after 8 are repeated to continue the continuous feeding.

If it is determined in step S18 that there is no paper, the flow advances to step S22 to perform the following paper feed stop processing.

In step S22, the pressurizing motor 28 is turned on to raise the pressurizing plate assembly 27, and in step S2.
At 3, the top dead center sensor 49 determines whether the pressure plate assembly 27 is at the top dead center. When it is determined that the pressure is at the top dead center, the pressurizing motor 28 is turned off in step S24, and when it is determined that the pressure is not at the top dead center, the pressure applying motor 28 remains in the on state and proceeds to step S25. Then, in step S25, the paper presence / absence sensor 48 determines that there is no paper and determines whether or not Z seconds have elapsed. If it is determined that Z seconds have not elapsed, then steps S23, 24.2
The operation of 5 is repeated. When it is determined that Z seconds have elapsed, the paper feed motor 17 is turned off in the next step S26, and further, in the step S27, the shredder main body SSR is turned on.
Turn off 53.

Next, at step S28, it is determined whether the pressure plate assembly 27 is at the top dead center or not.
When it is determined that it is at top dead center, the pressurizing motor 28 is turned off in step S29, and when it is determined that it is not at top dead center, the pressurizing motor 28 is still in the on state at step S30. Proceed to. And step S3
At 0, it is determined whether or not Y seconds have elapsed after the SSR 53 was turned off. If it is determined that Y seconds have not elapsed, the operations of steps S28, 29, and 30 are repeated. If it is determined that Y seconds have passed, then in step S31, SSR5
3 is turned on, and in step S32, the top dead center sensor 49 determines again whether or not the pressure plate assembly 27 is at the top dead center. When it is determined that it is not at top dead center, the operation of step S29 is repeated while the pressurizing motor 28 is still on, and when it is determined that it is at top dead center, the pressurizing motor 28 is turned off at the next step S33. The paper feed stop process is completed.

By the way, in the above-described first illustrated embodiment, as shown in steps S1 to S8 of FIG. 7, when the paper P is not actually set, but is misunderstood as being set, it is used. If the paper feed start switch is pressed, the pressurizing motor 28 is driven each time the pressurizing plate assembly 27 is repeatedly moved up and down. But,
This is troublesome because the pressurizing motor 28 is unnecessarily driven until the user notices that, and the user also performs unnecessary confirmation work.

Therefore, according to the present invention, for example, as shown in the following embodiment (the parts corresponding to the respective parts of the sheet feeding device in the first embodiment are designated by the same reference numerals), on the conveyor belt 14. When the paper feed start switch is pressed when there is no paper P in the sheet P, it is possible to prevent the pressurizing motor 28 from operating to prevent the pressurizing plate assembly 27 from repeatedly moving up and down.

Therefore, in the sheet feeding device 12 of the second embodiment, the pressurizing motor 28 applies only when the sheet feeding start switch is first turned on after the power switch 20 is turned on or after the safety cover 22 is opened and closed. A drive control means for activating the pressure plate assembly 27 of the pressure means 25 to move it to the sheet pressing position a is provided.

In the second embodiment, when the paper P is fed by the paper feeding device 12 and shredded by the shredder, as shown in the flowchart of FIG. Safety cover 2 at 23
After detecting the opening / closing operation of step 2, the process proceeds to step S2 ′,
Determine whether the paper feed start switch is on. Then, if it is determined that it is not turned on, the process returns to step S1 '. If it is determined that it is turned on, the process proceeds to step S3 '.

In step S3 ', the power switch 20
It is determined whether the paper feed start switch is turned on for the first time after turning on or the paper feed start switch is turned on for the first time after the opening / closing operation of the safety cover 22. If it is determined that the first paper feed start switch is not turned on, the process returns to step S1 '.
If it is determined that the first paper feed start switch is turned on, the process proceeds to step S4 ', the pressurizing motor 28 is turned on to lower the pressurizing plate assembly 27 to the paper pressing position a, and then step S5'. Proceed to. Step S
At 5 ', it is determined whether or not the stacked sheets P are being pressed by the pressure plate assembly 27, and if it is determined that they are not, the operation of step S5' is repeated. When it is determined that the pressure is applied, the process proceeds to step S6 ′ to turn off the pressurizing motor 28 to stop the descending of the pressurizing plate assembly 27,
Go to step S7 '.

Then, in step S7 ', the paper presence / absence detection sensor 48 determines whether or not there is a paper P on the tray 13a. When it is determined that there is no paper, the process proceeds to step S8 ', the pressurizing motor 28 is turned on to raise the pressurizing plate assembly 27, and in step S9', it is determined whether the pressurizing plate assembly 27 is at the top dead center. . Then, when it is determined that it is not at the top dead center, the process returns to step S8 ', and the operations of steps S8' and 9'are repeated until it is retracted to the top dead center. If it is determined to be at the top dead center, step S10 '
Then, the pressurizing motor 28 is turned off, and the pressurizing assembly 27
Stop rising and return to step S1 '.

If it is determined in step S7 'that there is paper, the process proceeds to the next step S11' to start feeding. Then, after the step S11 ', the first step shown in FIG.
The same processing as in the above embodiment is performed.

By the way, in the second embodiment, when the paper feed start switch is first turned on after the power switch 20 is turned on or after the safety cover 22 is opened / closed, it is notified when there is no paper on the conveyor belt 14. It is preferable to provide a notification means. In that case, for example, as shown in FIG. 1, a display panel 42 may be provided on the upper surface of the storage cover 24, and the display panel 42 may constitute a notification means. As the notification means, a sounding device such as a buzzer may be used.

[0047]

Therefore, according to the present invention, the sheet detecting means for detecting the sheet on the sheet conveying means is provided in the vicinity of the sheet pressing position of the pressing means, and the stacked sheet is pressed by the pressing means. After that, since it is configured to determine the presence or absence of the paper on the paper transport means based on the detection result of the paper detection means, the paper can be reliably detected without being affected by the deformed state of the paper such as curl or crease. Can be used to feed paper.

According to the second aspect of the present invention, only when the paper feed start switch is first turned on after the power switch is turned on or after the safety cover is opened / closed, the pressing means is operated to move to the paper pressing position. If you mistakenly think that it is set even though you have not set the paper, you can prevent the pressurizing means from repeating the operation each time you press the paper feed start switch, This allows
It is possible for the user to quickly notice the unloaded state of the paper, to repeatedly drive the pressurizing means unnecessarily, and to avoid unnecessary checking work.

According to the third aspect of the present invention, when the paper feed start switch is first turned on after the power switch is turned on or after the safety cover is opened / closed, it is notified when there is no paper on the paper conveying means. With the configuration including the notification means, it is possible to reliably notify the unloaded state of the paper.

[Brief description of drawings]

FIG. 1 is a perspective view showing a sheet feeding device according to an embodiment of the present invention with a safety cover opened.

FIG. 2 is a front view showing an internal mechanism of an upper portion of a shredder to which the paper feeding device is attached.

FIG. 3 is a front view showing a pressure assembly of a pressure unit provided in the sheet feeding device.

FIG. 4 is a side view showing the inside of a cross section of the pressure assembly.

FIG. 5 is a side view of the pressed state.

FIG. 6 is a block diagram showing an electrical configuration of the sheet feeding device.

FIG. 7 is a flowchart relating to paper feed control of this paper feed device.

FIG. 8 is a flowchart relating to sheet feeding control of a sheet feeding device that is another embodiment of the present invention.

FIG. 9 is a schematic configuration diagram of a conventional paper feeding device.

FIG. 10 is a paper pressing state view of the paper feeding device in which paper with a crease is set.

[Explanation of symbols]

 12 Paper Feeding Device 13 Device Main Body 14 Conveying Belt (Paper Conveying Means) 20 Power Switch 22 Safety Cover 23 Cover Opening Detection Sensor (Cover Opening Detection Means) 25 Pressurizing Means 42 Display Panel (Notification Means) 48 Paper Presence Detection Sensor (Paper) Detecting means) P paper a Paper press position

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G03G 15/00 516 H04N 1/00 108 C

Claims (3)

[Claims] 1. In a paper feeding device for pressing placed stacked sheets by a pressing means and sending them out by a sheet conveying means, a sheet detecting means for detecting a sheet on the sheet conveying means is a sheet pressing position of the pressing means. Is provided near the sheet feeding means, and after the pressure is applied to hold the stacked sheets, the presence or absence of the sheet on the sheet conveying means is determined based on the detection result of the sheet detecting means. A paper feeding apparatus comprising drive control means for driving and releasing the pressing state of the stacked sheets by the pressing means while not driving. 2. The apparatus main body is provided with an opaque safety cover that covers the sheet conveying means so as to be openable and closable, and cover opening / closing detection means for detecting opening / closing of the safety cover is provided.
2. A drive control means for activating the pressurizing means to move to the paper pressing position only when the paper feed start switch is first turned on after the power switch is turned on or after the safety cover is opened / closed. The paper feeder described in. 3. When the paper feed start switch is turned on for the first time after the power switch is turned on or after the safety cover is opened / closed, a notification means is provided for notifying that there is no paper on the paper transport means. The paper feeding device according to claim 2.