JPH09286534A - Paper sheet feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such paper sheet feeder as making smooth paper sheet supply by surely making switching between paper sheet supply by means of multi-paper sheet supply base and that by means of manual paper sheet supply base, as well as applying space saving to the installation space of both a multi- paper sheet supply base and a manual paper sheet supply base, improving their operativeness and workability and aiming at their cost reduction. SOLUTION: A multi-paper sheet supply base 1 and a manual paper sheet supply base 2 freely and rotationally movably canti-lever supported on concentrate support shafts 5, 6 are stored in one end surface of a device main body 3 and as required, each paper sheet supply base is individually and depending upon case by case, they are engaged with each other to be opened/closed, strict discrimination is applied to the paper sheet supply by either one of paper sheet supply base by a detection means 13 so as to make secure switching to carry out smooth paper sheet supply. In addition, by providing a damper 12, impact force at the time of engagement of the multi-paper sheet supply base 1 with the manual paper sheet supply base 2 is relaxed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding device attached to a copying machine, a printer, a facsimile or the like, and more particularly to a paper feeding device suitable for saving the installation space.

[0002]

2. Description of the Related Art A publicly known technique in which a multi-feeding table for accommodating stacked sheets of appropriate thickness and feeding them and a manual feeding table for manually feeding the sheets one by one are integrated. For example, Japanese Utility Model Laid-Open No. 4-12425 is cited. The "paper storage container of the image forming apparatus" has the structure shown in FIGS.

A cassette 38 corresponding to a multi-feeding table comprises a box 39 and a cover 40 for covering the upper surface thereof, and a bottom plate 41 for supporting the paper 4 and a spring 42 for pushing the paper 4 to a paper feeding position. It is stored. On the other hand, the manual feed tray 43 corresponding to the manual feed tray is arranged at the front opening of the cover 40 as illustrated. A side fence 44 that restricts the side surface of the paper is arranged on the manual feed stand.

[0004]

In the paper storage container shown in FIGS. 8 and 9, in order to feed the paper one by one with the manual feed stand 43, the side fences 44 are arranged at intervals corresponding to the width of the paper. It suffices to make adjustments and manually insert paper one by one between the side fences 44. However, since the cassette 38 covered by the relatively long cover 40 is arranged on the rear side of the manual feed stand 43 as shown in the figure, there is a problem that the operation of inserting the paper into the manual feed stand 43 is difficult.

Further, there is a problem that the cassette 38 is arranged so as to project from the apparatus, and a large installation space is required only for the projecting parts of the cassette 38. The size of the cassette 38 when the large size such as A ₃ is proportional to the size of the paper cassette 38 for accommodating paper installation space is extremely large and difficult to do paper feeding operation by the manual feed as described above Become.

The present invention solves the above problems and saves space, and the multi paper feed tray and the manual paper feed tray are used independently and alternately in association with each other. An object of the present invention is to provide a paper feeding device that can reliably carry out paper, improve safety and reliability, and can be implemented at low cost.

[0007]

According to a first aspect of the present invention, a multi-feeding table for feeding stacked sheets of appropriate thickness and a multi-feeding table can be stored in a volume occupied by the multi-feeding table. A paper feeding apparatus having a manual paper feeding table for inserting and feeding paper one by one, wherein the multi paper feeding table and the manual paper feeding table are independently rotatable and the apparatus is immovable. It is characterized by being cantilevered to the side.

According to a second aspect of the present invention, in the sheet feeding device according to the first aspect, between the multi sheet feeding table and the manual sheet feeding table, the multi sheet feeding table is rotated in the opening direction. And a multi-feeding unit that rotates together with the multi-feeding table as the manual sheet feeding table rotates in a closing direction.

According to a third aspect of the present invention, in the sheet feeding device according to the first aspect, a damper mechanism section for suppressing the rotational speed of the multi-sheet feeding table is attached. To do.

According to a fourth aspect of the present invention, in the sheet feeding device according to the first aspect, the multi-sheet feeding table and the manual sheet feeding table are provided with detection means for detecting opening and closing of each of them. Is characterized by.

According to a fifth aspect of the present invention, in the sheet feeding device according to the first aspect, the multi-sheet feeding table is provided with a detecting means for contacting the stacked sheets and detecting the presence or absence of the sheets. It is characterized in that the detecting means is provided so as to come into contact with the paper inserted into the manual paper feed tray and functions as a pre-feed sensor for manual paper feed.

According to a sixth aspect of the present invention, in the sheet feeding device according to the first aspect, friction is sent to the apparatus side near the sheet feeding side of the multi sheet feeding table while separating the fed sheets. A separating mechanism portion is provided, and the mechanism portion is formed so as to release the separating function in association with the operation of the multi-feeding table in the closing direction.

According to a seventh aspect of the present invention, in the sheet feeding device according to the first aspect, a space between a bottom plate that supports paper on the multi-sheet feeding table and the manual sheet feeding table and the manual sheet feeding table is provided. Is provided with a spring for urging the bottom plate toward the manual feed tray, and supports the bottom plate at a predetermined position against the spring force of the spring when the multi-feed tray is closed. It is characterized in that a stopper pin is provided.

According to an eighth aspect of the present invention, in the paper feeding device according to the first aspect, a side fence for restricting a side surface of the paper on the table is extendably arranged on the manual paper feeding table, and The side fence is formed so as to be capable of expanding and contracting in the vertical direction of the manual paper feed tray.

According to a ninth aspect of the present invention, in the sheet feeding device according to the eighth aspect, a positioning mechanism for locking the side fence at a predetermined regulation position is provided between the side fence and the multi-sheet feeding stand. It is characterized in that the parts are arranged.

Since the manual paper feed tray is accommodated in the volume occupied by the multi-paper feed, the whole is compacted to save space, and each is cantilevered on the stationary side of the apparatus and independently operated. . Therefore, particularly in the case of paper feeding by the manual paper feeding table, the multi-paper feeding table does not get in the way and the manual insertion is easily performed. In addition, the detection means makes it possible to clarify whether the paper is fed by the multi-feeding tray or not by the manual feeding tray, so that the feeding can be performed reliably and the two trays can be interlocked for convenient opening and closing. Done.

Further, a damper mechanism is attached to the large multi-feeding stand to improve the safety of the opening / closing operation. Further, the friction separating mechanism unit operates only in the case of paper feeding by the multi-paper feeding table, and the generation of skew due to manual paper feeding is prevented.

Further, the bottom plate for supporting the paper can position the upper surface of the stacked papers at a predetermined position when the paper is fed by the multi paper feed table, and is held at the predetermined position when the paper is fed by the manual paper feed table. Work easier. Further, the side fence that regulates the side surface of the paper is locked at a predetermined position by the positioning mechanism portion to prevent rattling.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a sheet feeding device of the present invention will be described below with reference to the drawings. First, a schematic structure of the multi-feeding table 1 and the manual sheet feeding table 2 will be described with reference to FIGS. Paper 4 that is stacked and stored on one end side of the apparatus main body 3
The multi-feeding table 1 having an area corresponding to the vertical dimension and the horizontal dimension of (FIG. 5) is cantilevered via the support shaft 5. On the other hand, a manual paper feed tray 2 is housed on the side of the multi-paper feed tray 1 close to the apparatus main body 3.

The manual paper feed tray 2 has a lateral width dimension slightly narrower than the lateral width of the multi paper feed tray 1 and a short vertical dimension. The manual paper feed tray 2 is also cantilevered on one end side of the apparatus main body by a support shaft 6 formed on the base end side thereof, and in this example, the support shaft 5 and the support shaft 6 are arranged at concentric positions.

As shown in FIGS. 1 and 3, the manual paper feed tray 2 is arranged in front of the lower surface side of the multi paper feed tray 1, and the upper surface of the manual paper feed tray 2 contacts the lower surface of the multi paper feed tray 1. The overlapping portion 7 is formed on the side. That is, when the manual paper feed tray 2 is housed in the multi paper feed tray 1, the overlapping portion and the manual paper feed tray 2 are substantially in contact with each other. As shown in FIG. 2, handles 8 and 9 for opening and closing the multi paper feed table 1 and the manual paper feed table 2 are provided.

With the above structure, when the manual paper feed tray 2 is operated in the opening direction while holding the handle 9, the manual paper feed tray 2 is independently rotated around the support shaft 6 and is rotated in the closed direction. Thus, it is rotated and stored on the side of the multi-feeding table 1. On the other hand, when the multi-feeding table 1 is also operated in the opening direction by holding the handle 8, the multi-feeding table 1 is independently rotated around the support shaft 5. As a result, the multi paper feed table 1 and the manual paper feed table 2 can be independently rotated to a predetermined paper feed position.

However, since the multi-feeding table 1 is provided with the overlapping section 7 as described above, for example, when the multi-feeding table 1 is rotated in the opening direction as shown in FIG. 1, the overlapping section 7 is manually inserted. It hits the paper feed table 2, and both tables rotate together. on the other hand,
On the contrary, when the manual paper feed tray 2 is rotated in the closing direction, the manual paper feed tray 2 hits the overlapping portion 7 of the multi paper feed tray 1 and is rotated in the closing direction around the multi paper feed tray 1 together.

As shown in FIG. 1, a gear 10 is fixed to the support shaft 5 of the multi-feeding base 1 at its concentric position. on the other hand,
A small gear 11 that meshes with the gear 10 is provided on the device body 3 side, and a damper 12 is connected to the rotating shaft of the small gear 11 via a one-way clutch (not shown). The damper 12 is made of a known one such as a rotary damper that regulates the rotational speed of the multi-feeding table 1 in the opening direction (clockwise direction in FIG. 1).

On the other hand, when the multi-feeding table 1 is rotated in the closing direction (counterclockwise direction), the braking force by the damper 12 is not applied by the one-way clutch, and the multi-feeding table 1 is
Can be smoothly rotated. The damper 12 slows down the falling rotation speed of the multi-feeding table 1 which operates in the opening direction to perform a soft landing to ensure safety and to rotate the manual-feeding table 2 and the multi-feeding table 1 which have already been rotated. It is intended to alleviate the shock at the time of collision with and to smoothly combine the two.

Detection in the vicinity of the supporting shafts 5 and 6 of the multi-feeding table 1 and the manual feeding table 2 is turned off and on in accordance with the opening / closing operation of the multi-feeding table 1 and the manual feeding table 2. Means 13 are provided. In FIGS. 1 and 3, the detection sensor 13a on the left side of the drawing is turned on and off by the multi-feeding table 1 and is turned off when the multi-feeding table 1 is rotated in the opening direction.
Becomes

Further, the detection sensor 13b on the right side is turned on and off by the manual paper feed table 2
It is turned off by rotating in the opening direction. By the above ON-OFF of the detection sensors 13a and 13b, the multi-feeding table 1
Alternatively, it is possible to easily detect that the paper is being fed by one of the manual paper feed trays 2.

As shown in FIGS. 4 and 5, a pickup roller 14, a feed roller 15, and a pair of conveying rollers 16 are provided on one end side of the apparatus main body 3 where the multi-feeding table 1 and the like are arranged.
And a friction separating mechanism 17 is provided below the feed roller 15. Also, the pickup roller 1
4 and the feed roller 15 are lever-shaped detecting means 1 for detecting the presence / absence of the paper 4 stacked on the multi-feeding base 1.
8 are provided.

Further, a bottom plate 19 for supporting the paper 4 is cantilevered by a support pin 20 on the side of the multi-feeding table 1 or the like. Further, a spring 21 is installed between the bottom plate 19 and the manual paper feed tray 2 so as to urge the bottom plate 19 toward the manual paper feed tray 2 side. Further, a stopper pin 22 is provided on the side of the multi-feeding table 1 for abuttingly engaging the lower surface of the bottom plate 19 and restricting the downward displacement of the bottom plate 19. Further, below the feed roller 15 and the conveying roller 16, a guide plate 23 for mounting and guiding the paper 4 inserted in the apparatus main body 3 is arranged along the horizontal direction.

The detecting means 18 detects the presence / absence of the paper 4 on the multi paper feed base 1 as described above, and as shown in FIG. The detection means 18 is rotated by contact with the tip of
Generates a detection signal. As a result, the transport roller 16 is operated. In the case of paper feeding by the multi-paper feed table 1, the conveyance roller 16 is controlled so as not to operate even if the detecting means 18 operates.

The friction separating mechanism portion 17 has a contact portion 24 and a cam portion 25, and a slide lever 26 slidably supported on the apparatus body 3 side, and a base end side of the apparatus body 3 cantilevered by a pin 27. A separation bracket 29 that is supported and pivotally supports the friction roller 28 on its tip side, an abutment pin 30 that is fixed to an intermediate portion of the separation bracket 29 and that engages with a cam portion of the slide lever 26, and a slide lever 26. Device body 3
Of the slide lever 26, which is interposed on the non-moving side of the slide lever 26 and urges the contact portion 24 of the slide lever 26 to press against the multi-feeding table 1, and the contact pin 30 of the separation bracket 29 is pressed against the cam portion. Therefore, it is composed of the separating bracket 29 and the separating spring 32 and the like provided between the stationary side of the apparatus main body 3.

When the multi paper feed tray 1 is in the closed state, the contact portion 24 of the slide lever 26 abuts on the multi paper feed tray 1 side, and the cam portion 25 of the slide lever 26 pushes the abutment pin 30. Then, the separation bracket 29 is rotated around the pin 27 in the clockwise direction against the spring force of the separation spring 32. Therefore, the friction roller 2
8 is separated from the feed roller 15 side.

On the other hand, when the multi-feeding table 1 is rotated in the opening direction, the engagement between the multi-feeding table 1 and the slide lever 26 is released, and the slide lever 26 is moved by the spring force of the slide lever spring 31 to move the cam. The engagement between the portion 25 and the contact pin 30 is released. As a result, the separation spring 32
Due to the spring force, the separating bracket 29 rotates about the pin 27, and the friction roller 28 is pressed against the pickup roller 14.

Next, the paper feeding operation of the paper feeding device of the present invention will be described. First, the paper feeding by the manual paper feeding table 2 will be described. As shown in FIG. 3, the manual paper feed tray 2 is rotated clockwise and set at the paper feed position. With this rotation in the opening direction, the detection sensor 13b is turned from ON to OFF, and the detection sensor 13a engaging with the multi-feeding table 1 is kept in the ON state, so that the manual paper feeding table 2 feeds paper. Is confirmed.

In this case, since the multi-feeding tray 1 is in the closed state, only the short manual feeding tray 2 projects from the end face of the apparatus main body 3, so that the paper 4 can be easily inserted. Further, the support shafts 5 and 6 are concentrically arranged on the multi-feeding table 1 and the manual feeding table 2, and these are closed at a position slightly inside from the end face of the apparatus main body 3 as shown in the drawing. Since it is retained, space can be saved.

As shown in FIG. 4, when the manual paper feed tray 2 is set at a predetermined paper feed position, the bottom plate 19 for holding the paper 4 comes to the position shown in the drawing, but the bottom plate 19 has a multi-paper feed on its lower surface. Even if the stopper pin 22 of the table 1 contacts and the tension of the spring 21 acts, the bottom plate 19 is held at the predetermined position shown in FIG. When the paper 4 is inserted on the bottom plate 19, the leading end of the paper 4 hits the detecting means 18, which is rotated to the position indicated by the dotted line to generate a detection signal.

When paper is being fed by the manual paper feed tray 2, the conveying roller is activated by this detection signal.
The inserted paper 4 is further inserted further along the guide plate 23, and the leading end of the paper 4 hits the conveying roller 16, so that the conveying roller 16 pulls the paper 4 into the apparatus and performs a predetermined copying operation. In this case, the friction separating mechanism 17 does not operate as described above, and the friction roller 2
Since 8 is located away from the feed roller 15, the manually fed paper 4 can be easily inserted into the transport roller 16 side as described above.

Next, the sheet feeding by the multi sheet feeding table 1 will be described with reference to FIG. As shown in FIG. 1, even when the multi-feeding table 1 and the manual sheet feeding table 2 are combined to be in the closed position, or even when the manual sheet feeding table 2 has already been rotated to the manual feeding open position. The multi-feeding table 1 can be independently rotated in the opening direction. When the manual paper feed tray 2 has already rotated in the opening direction, the stacking section 7 of the multi paper feed tray 1 contacts the manual paper feed tray 2 and thereafter both of them rotate in the open direction for the purpose. . The rotation of the multi-feeding table 1 turns the detection sensor 13a from ON to OFF, and also turns the manual feeding table from ON to OFF.
become. From this detection signal, it is confirmed that the multi-paper feed table 1 has been fed.

By rotating the multi paper feed table 1 in the opening direction,
The contact between the bottom plate 19 and the stopper pin 22 is released, and the contact portion 24 of the slide lever 26 is released, so that the slide lever 26 moves as illustrated. As a result, the engagement between the contact pin 30 and the cam portion 25 is released, and the separation bracket 29 is moved to the pin 27 by the spring force of the separation spring 32.
Is rotated in the counterclockwise direction, and the friction roller 28 comes into pressure contact with the feed roller 15. When the stacked papers 4 are mounted on the bottom plate 19, the spring 21 is compressed by the weight of the papers 4, but the upper surface of the papers 4 has the pickup roller 1
4 is abutted and positioned at a predetermined position.

At the same time, the edge of the upper surface of the paper 4 contacts the detection means 18, and a detection signal for detecting the mounting of the paper 4 is emitted.
In this case, as described above, the detection means 18 rotates to generate the detection signal, but the detection sensor 13b for detecting the feeding by the multi-feeding table 1 outputs the signal, so that the transport roller 16 is generated. Does not work. The stacked uppermost sheets of paper 4 are sent from the pickup roller 14 to the feed roller 15 side, sandwiched and separated by the feed roller 15 and the friction roller 28, guided to the surface of the guide plate 23, and conveyed to a predetermined position. .

As described above, both the multi-sheet feeding table 1 and the manual sheet feeding table 2 are reliably and stably fed. In particular, in the manual feeding by the manual paper feed table 2, the bottom plate 19 is held in a fixed position by the stopper pin 22 so that the bottom plate 19 can be securely inserted, and the multi-paper feed table 1 is also provided.
When the paper feed is switched by the manual paper feed tray 2, the separation by the friction separating mechanism 17 is automatically released, and this fact is confirmed by the detection signal of the detecting means 18, and the prefeed for operating the conveying roller 16 is performed by this detection signal. Therefore, even if the paper 4 is inserted while being pressed by hand when the paper is fed by the manual paper feed tray 2, skew does not occur and the paper can be smoothly fed.

Next, the side fence 33 provided on the manual feed tray 2 will be described with reference to FIGS. The side fence 33 regulates the width direction of the paper 4 mounted on the manual paper feed tray 2. In this example, the side fence 3 is convenient for manually feeding the paper 4 having a relatively long vertical dimension.
3 are provided. The side fence 33 of this example is provided with a rotary shaft 34 arranged near the outer end of the manual paper feed tray 2 and orthogonal to the manual feed direction, and an extension fence 35 supported by one end of the rotary shaft 34 and rotatable about the rotary shaft 34. Consists of. A positioning pin 36 as a positioning mechanism portion is formed to project at the tip of the extension fence 35, and the positioning pin 36 is fitted into a positioning hole 37 formed on the multi-feeding table 1 side to position the extension fence 35.

A plurality of positioning holes 37 (three in the drawing) are formed along the axial direction of the rotary shaft 34. When the extension fence 35 is not used, as shown in FIGS. 6 and 7,
The paper is stored on the side of the manual paper feed tray 2, but when necessary, it is rotated 180 ° around the rotary shaft 34 from the storage position, and its positioning pin 36 is fitted into the positioning hole 37 and fixed.
By using this extension fence 35, it becomes possible to smoothly convey the paper 4 having a long vertical dimension by manual feeding.

[0044]

【The invention's effect】

1) According to the paper feeding device of the first aspect of the present invention, the manual paper feeding stand can be formed in a minimum space, the installation space can be saved, and the manual paper feeding can be performed if necessary. You can easily switch between the stand and the multi-feed stand. As a result, costs can be reduced.

2) According to the paper feeding apparatus of the second aspect of the present invention, the multi paper feeding tray and the manual paper feeding tray are stored in the main body of the apparatus when not in use, and selectively set to a predetermined position when necessary. At the same time, one of the paper feed trays is opened and closed to open and close both paper feed trays. This can improve operability.

3) According to the third aspect of the present invention, the multi-feeding table is provided with the damper mechanism section to suppress the rotational speed at the time of opening and reduce the impact of the drop. The safety is improved, and the impact breakage is prevented from occurring in the manual feed tray and the multi-feed tray.

4) According to the sheet feeding device of the fourth aspect of the present invention, it is detected that either the multi sheet feeding table or the manual sheet feeding table is fed, and the usage of both The unused state can be clearly detected.

5) According to the paper feeding apparatus of the fifth aspect of the present invention, the detecting means for detecting the presence / absence of paper in the multi paper feeding table is used for the pre-feed signal of the carrying roller for carrying the manual paper feeding table. By doing so, cost reduction can be achieved.

6) According to the paper feeding device of the sixth aspect of the present invention, by manually releasing the separating operation of the friction separating mechanism portion in the case of manual feeding by the manual paper feeding table, the paper by manual feeding The feed is smooth and stable without causing skew.

7) According to the paper feeding apparatus of the seventh aspect of the present invention, when the paper is fed by the manual paper feeding table, the bottom plate is fixedly supported so that the insertion work is easily performed and the operability is improved. Can be achieved.

8) According to the paper feeder of claim 8 of the present invention, even if the size of the paper is large, the extension side fence can be used to accurately feed the paper and the side fence can be stored. Since it has a simple structure, space can be saved.

9) According to the sheet feeding device of the ninth aspect of the present invention, since the side fence is correctly positioned and fixed at a predetermined position, an accurate sheet feeding operation is performed.

[Brief description of drawings]

FIG. 1 is a side view for explaining a schematic structure of a multi-sheet feeding table and a manual sheet feeding table of the present invention and an opening / closing operation thereof.

FIG. 2 is a front view taken along arrow A in FIG.

FIG. 3 is a side view showing an open / closed state of the manual paper feed tray of the present invention.

FIG. 4 is a side view showing the structure around the insertion of paper by the manual paper feed tray of the present invention.

FIG. 5 is a side view showing the structure around the paper feed in the multi paper feed table of the present invention.

FIG. 6 is a top view showing the structure of the side fence of the manual paper feed tray in the present invention.

7 is a side view taken along the arrow B in FIG.

FIG. 8 is an external perspective view of a conventional paper storage container.

FIG. 9 is a sectional view taken along the line CC of FIG. 8;

[Explanation of symbols]

 1 Multi Paper Feeding Table 2 Manual Paper Feeding Table 3 Device Main Body 4 Paper 5 Support Shaft 6 Support Shaft 7 Overlapping Section 8 Handle 9 Handle 10 Gear 11 Gear Gear 12 Damper 13 Detecting Means 13a Detection Sensor 13b Detection Sensor 14 Pickup Roller 15 Feed Roller 16 Conveyor Roller 17 Friction Separation Mechanism Section 18 Detection Means 19 Bottom Plate 20 Support Pin 21 Spring 22 Stopper Pin 23 Guide Plate 24 Contact Part 25 Cam Part 26 Slide Lever 27 Pin 28 Friction Roller 29 Separation Bracket 30 Contact Pin 31 For Slide Lever Spring 32 Separation spring 33 Side fence 34 Rotating shaft 35 Extension fence 36 Positioning pin 37 Positioning hole

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location H04N 1/00 108 H04N 1/00 108C

Claims (9)

[Claims] 1. A multi-paper feed table for feeding stacked sheets of appropriate thickness, and a multi-paper feed table which is arranged so as to be able to be accommodated in a volume occupied by the multi-paper feed table and is fed one by one. And a manual paper feed table for feeding the paper, wherein the multi-paper feed table and the manual paper feed table are each independently rotatably supported by a cantilever on an immovable side of the apparatus. Paper equipment. 2. The manual paper feed tray is rotated between the multi paper feed tray and the manual paper feed tray together with the rotation of the multi paper feed tray in the opening direction, and the manual paper feed tray is closed. 2. The sheet feeding device according to claim 1, wherein a stacking unit that rotates the multi-sheet feeding table together with the rotation of the direction is formed. 3. The paper feeding device according to claim 1, wherein the multi-paper feeding table is additionally provided with a damper mechanism section that suppresses a rotational speed of the multi paper feeding table. 4. The paper feeding apparatus according to claim 1, wherein the multi-paper feeding table and the manual paper feeding table are provided with a detecting means for detecting opening and closing of each of them. 5. The multi-paper feed table is provided with a detection means for contacting the stacked papers to detect the presence / absence of the papers.
2. The sheet feeding device according to claim 1, wherein the detecting unit is arranged so as to be able to contact a sheet inserted into the manual sheet feeding table and functions as a pre-feed sensor for manual sheet feeding. 6. A friction separating mechanism portion for feeding the fed paper while separating it is disposed on the side of the apparatus near the paper feeding side of the multi-feeding table, and the mechanism portion is provided for the multi-feeding table. 2. The sheet feeding device according to claim 1, wherein the sheet feeding device is formed so as to release the separating function in association with the closing operation of the sheet feeding device. 7. A spring for urging the bottom plate toward the manual feed tray is installed between the manual feed tray and the bottom plate supporting the paper on the multi-feed tray and the manual feed tray. At the same time, a stopper pin for supporting the bottom plate at a predetermined position against the spring force of the spring when the multi-feeding table is closed is provided on the multi-feeding table side. Paper equipment. 8. A side fence for restricting the side surface of the paper on the table is extensiblely arranged on the manual paper feed table, and the side fence is formed so as to be extensible in the longitudinal direction of the manual paper feed table. The sheet feeding device according to claim 1, wherein the sheet feeding device is a sheet feeding device. 9. The positioning mechanism section for locking the side fence at a predetermined regulation position is provided between the side fence and the multi-feeding stand. The paper feeder described.