JP2954772B2 - Paper feeder of an image forming apparatus capable of storing removed packaging sheets in packaging sheet storage means - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder of an image forming apparatus capable of storing a packaging sheet from a copying machine, a facsimile, etc., in a packaging sheet storage means. The present invention relates to a paper feeding device for feeding paper.

[0002]

2. Description of the Related Art In a paper feeder of an image forming apparatus such as a copying machine, which is widely used in general, paper supply is entirely performed manually.

Normally, the paper supply operation is performed by: 1. Pull out cassette (tray) from paper feeder. 2. Remove the upper cover of the cassette. 3. Open the paper pack packaging. 4. Lifting the paper holding member (corner claw) in the cassette 5. Align the paper removed from the pack. 6. Loading paper into cassette 7. Place the paper holding member on the mounted paper. It consists of each process such as mounting a cassette (tray) on the paper feeder.

However, such a paper feeding apparatus requires a large number of paper supply operation steps as described above, and the operation is extremely troublesome and time-consuming especially for a user who uses a large amount of paper. It was a thing.

For this reason, a paper feeder has been proposed in which a predetermined number of sheets packed together are directly loaded into a paper feeder main body and opened and fed by a mechanism inside the paper feeder.

For example, Japanese Patent Application Laid-Open No. 63-203534 discloses a multi-stage stack of sheet bundles stacked and wrapped in a predetermined number of sheets on a wrapping sheet, and moving the wrapping sheet by a cutter while moving forward by one stage. The left and right sides are cut, the upper surface and the lower surface of the cut packaging sheet are sucked and opened, and the opened sheet bundle is nipped and placed on a carrier, and then the sheet bundle is transported. There has been proposed a method and an apparatus for unpacking and stacking packaging sheets which are conveyed to a mounting position and stacked by moving the table.

Japanese Patent Application Laid-Open No. Sho 60-97145 discloses that a packaging material for a paper is formed in a box shape from a strong material such as cardboard or resin, and a portion to which a feeding roller, a separation claw, and the like hit. A technique has been proposed in which the box-shaped member is detached from the box-shaped member and then attached to a sheet feeding position of the image forming apparatus main body to use the box-shaped member as a cassette for sheet feeding.

[0008]

However, in the former of the above prior art, the packaging sheet is cut with a cutter and the upper and lower surfaces of the cut packaging sheet are suctioned and opened. According to this, even the wrapped paper may be cut by the cutter. This is a fatal defect for paper used in an image forming apparatus such as a copying machine. In addition, since the suction mechanism is used for opening the packaging sheet, the size of the apparatus is increased, and there is a problem in terms of noise.

In the above-described apparatus, the opened sheet bundle is sandwiched and placed on the carrier, and then the sheet bundle is transported to the loading position by the movement of the carrier to be stacked. Nipping and transporting the opened sheet bundle disturbs the stacking state of the sheet bundle, and in some cases, the sheet bundle may be separated.

In the latter case, since the paper packaging material (box-shaped member) is used as a cassette for feeding paper, it must be made of a strong material such as cardboard or resin.
The above-mentioned materials are generally expensive, and have the drawback that they are expensive and are not versatile as a paper storage member used in a copying apparatus or the like which only stores several hundred sheets.

The box-shaped member has a perforation for cutting off a tip portion. However, when the paper is stored for a long period of time, the paper is exposed to the outside air through the perforation and absorbs moisture. May have a negative effect.

In addition, a part of the box-like member necessarily protrudes outside the apparatus from the viewpoint of ease of attachment / detachment to / from the apparatus main body. This is contrary to the recent demand for space saving in copying apparatuses and the like.

An object of the present invention is to provide a paper feeder for an image forming apparatus capable of resolving the above-mentioned drawbacks of the conventional apparatus and storing a removed packaging sheet in a packaging sheet storage means capable of greatly simplifying a paper supply operation. With the goal.

[0014]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a paper feeder main body, a paper placing means provided at a predetermined position in the paper feeder main body, and a paper pack placed on the paper placing means. Packaging sheet removing means for removing the packaging sheet by pulling the projection projecting at one end of the packaging sheet between the paper placement surface of the paper loading means and the projecting part of the packaging sheet removing means; A packaging sheet accommodating means disposed on the downstream side in the towing direction and accommodating the packaging sheet removed by the packaging sheet removing means.
This is achieved by a first means for transferring one end of the packaging sheet to a sheet entry portion of the packaging sheet storage means.

[0015] Further, the above object is achieved by the second means in the first means, wherein the packaging sheet removing means is constituted by a roller.

Further, the above object is attained by a third means in which, in the second means, the paper placing surface facing the roller is constituted by a low friction member.

[0017]

In the present invention, after the paper pack inserted by the user is automatically mounted on the paper feeding position in the paper feeding device main body by the paper pack conveying means, the paper pack is removed by the packaging sheet removing means. The packaging sheet was automatically removed. Further, in the first and second means, the protruding portion (tongue piece) formed at one end of the packaging sheet of the paper pack placed on the paper placing means is provided with a removing means comprising a roller and a paper loading means. The removal means is moved while being sandwiched between the paper placement surface of the placement means and the projecting portion of the packaging sheet is transferred to the sheet entrance of the packaging sheet storage means disposed downstream in the moving direction of the removal means. To

In the third means, a portion of the sheet placing surface facing the roller is constituted by a low friction member,
The removal means can improve the nipping and transporting of the protruding portion.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an image forming apparatus according to an embodiment of the present invention, which comprises a copier body A having a well-known configuration and a fully automatic paper feeder B according to the present invention.

In the paper feeder B, 1 is a trash box for storing a pack of paper, 2 is a pack opening device for opening the paper pack, 3 is an entrance guide plate, 4 is a drive roller driving motor to be described later, and 5 is a drive motor. 4 is a drive shaft, 6 is a tray for loading paper, 7 is a plurality of side fences corresponding to the paper size in order to regulate the side edges of the paper on the tray 6, and 8 is a transport of the paper in the width direction. Reference numeral 9 denotes a paper feed roller for feeding the paper toward the copying machine main body, and reference numeral 10 denotes a back fence for regulating the rear end of the paper.

FIG. 2 is a perspective view of the sheet feeding device, and sheet insertion ports 11, 12, and 13 are provided on the front side (front side of the copying machine) for A5, A4, and A3, respectively.
The paper pack 20 shown in FIG.
3 is set to the reference position, and the tongue piece 21 is set to the left side, and is inserted into the corresponding portion of the paper insertion slots 11, 12, 13. At this time, the doors 31, 32, and 33 of the respective paper insertion ports shown in FIGS. 4 to 7 are designed to guide the paper pack 20. For example, A4 size paper pack 2
0 is inserted into the paper insertion slot 12, the insertion slot 1 for A3
Since the third door 33 is not opened, the paper pack 20 can be guided so as not to shift in the lateral direction. Further, as shown in FIG. 5, the door (the door 31 is exemplified) is automatically returned to the original position after the paper pack 20 is inserted by the spring 34.

In this embodiment, the paper insertion slots for A5, A4, and A3 are provided. However, as shown in FIG. As shown in FIGS. 8 and 9, a slide-type guide piece 36 is provided in a slide groove 35 of a door (shown by a door 31), and the guide piece 36 is moved right and left in accordance with the sheet size. The end may be guided. In FIG. 2, reference numeral 14a denotes a pack opening device drive motor, 14b denotes a back fluence drive motor, and 15 denotes a screw (male screw) attached to the motor shaft.

FIG. 10 is a perspective view showing an example of a paper pack detecting mechanism. A bar code reader 40 is provided at a reference position on the right side of a paper insertion slot (showing the paper insertion slot 11). By reading a bar code 41 provided on one side surface of the paper 20, the entry of the paper pack 20 is detected.

FIG. 11 is a perspective view of the transport roller section, and FIG. 12 is an explanatory view showing the state of the entry of the paper pack and the rotation of the transport roller.

The transport roller 8 is usually located above the paper insertion slot so as not to hinder the entry of the paper pack 20. In the figure, 51 is a drive gear that rotates integrally with the drive shaft 5, 52 is an arm that rotates around the drive shaft 5,
Reference numeral 3 denotes a planetary gear which is attached to the tip of the arm 52 and meshes with the drive gear 51. Reference numeral 54 denotes a driven roller formed of a low friction member provided for smoothly transporting the paper pack 20. Instead of a roller, a plate-like, for example, Teflon sheet may be used.

As shown in FIG. 12, when the drive gear 51 is rotated in the counterclockwise direction, the conveying roller 8 provided coaxially with the planetary gear 53 is rotated in the counterclockwise direction together with the arm 52, and moves upward (indicated by a broken line). ) Position and the paper pack 20
When the drive gear 51 is rotated in the clockwise direction, the transport roller 8 is also rotated in the clockwise direction and falls on the upper surface of the paper pack 20. Then, the rotation of the drive gear 51 causes the transport roller 8 to rotate in the counterclockwise direction and transport the paper pack in the direction of the arrow.

FIG. 13 is a structural view showing one example of a pseudo load member of the transport roller 8, FIG. 14 is a structural view showing another example thereof, and FIG. 15 is a longitudinal sectional view of the pseudo load member shown in FIG.

When a pseudo load is applied by a frictional force,
As shown in FIG. 13, a friction member 55 such as cork or felt is urged against the planetary gear 53 by a coil spring 56 to generate a frictional force on the side surface of the planetary gear 53 to apply a load.

When a dummy load is created by using a damper, as shown in FIG. 14, a configuration is adopted in which a damper 57 is attached to the arm 52 by a fixing screw 58 at a rotating portion of the planetary gear 53. As the damper 57, for example, a hydraulic damper, a powder torque limiter, or the like is used.

FIG. 15 shows the structure of the hydraulic damper. 6 in the figure
Reference numeral 0 denotes a rotating shaft directly connected to the planetary rollers, and an impeller is formed at an end thereof. Reference numeral 61 denotes a seal member for preventing leakage of liquid, and reference numeral 62 denotes a cover, in which a viscous oil 63 is filled.

As shown in FIG. 12, when the transport roller 8 comes into contact with the paper pack 20, the pseudo load member starts to slide. As a result, the transport roller 8 which has been rotating together with the drive gear 51 starts to rotate, and the paper pack 20 is further transported into the mechanism. At this time, if a pack other than the exclusive pack is identified by a bar code label or the like of the paper pack 20, the pack is discharged by reversing the transport roller 8 when a pack other than the exclusive pack is inserted. can do.

FIG. 16 is a perspective view of a moving mechanism of the side fence, and FIG. 17 is a perspective view showing a state in which the side fence has fallen.

As shown in FIG. 16, a side fence driving motor 70 (a gear portion thereof) is provided with a side fence 7 on the near side.
When the fence drive motor 70 is rotated by the engagement of the rack 71a and the rack 72 of the back side fence 7b, the side fences 7a and 7b move in a direction toward and away from each other.

When the paper pack 20 enters the main body, as shown in FIG. 17, the front side fence 7a
Is pushed by the paper pack 20 and falls backward, thereby facilitating the entry of the paper. By the way, the side fence 7 and the back fence 10 move to the retreat position (maximum size) when the absence of paper is detected by the paper presence / absence sensor. The conveying roller 8 is located at the back of the side fence 7, while the side fence 7a is retractable and can be restored by a spring, so that the final end of the paper pack 20 exceeds the side fence 7a. Then, the side fence 7a rises to the original position. After the side fence 7a gets up,
The side fence 7 is moved by the side fence drive motor 70 to the center which is the reference position for transporting the paper pack 20.

After the positioning by the side fence 7 is completed, the back and forth positioning is performed by the back fence 10. In this case, since the paper size is known when the side fence is moved, the movement amount of the back fence 10 is determined based on this data.

FIG. 18 is a perspective view of the back fence moving mechanism, and FIG. 19 is a perspective view of the back fence and the vicinity of the back opening device.

Since the back fence 10 and the pack opening device 2 are cut with internal threads to be screwed into the screw 15, both can be moved by rotating the drive motor 14. In FIG. 18, reference numeral 80 denotes a bearing.

FIG. 20 is a side view showing the positional relationship between the back fence and the bottom surface of the paper pack storage unit, and FIG. 21 is the same front view.

Since the back fence 10 also serves as a paper press when opening the paper pack 20, the lower end of the back fence 10 and the bottom surface of the paper pack storage section (paper placement surface) 8
1, a gap 83 is provided so that the tongue 21 of the paper pack 20 can pass through. Further, from the gap 83,
The opened sheet is a packaging sheet 20A of the sheet pack 20,
A barrier 82 is provided below the back fluence 10 using a flexible material such as mylar so as not to come out together with 20B.

Referring back to FIG. 19, the tongue piece 21 protrudes to the rear of the back fence 10 when the back fence 10 is stopped. At the same time as the back fence 10 moves, the pack opening device 2 moves and stops with the rubber-coated magnet roller 90 placed on the tongue piece 21. Reference numeral 91 denotes a drive shaft for driving the magnet roller 90;
92 is a drive motor and 93 is a worm gear.

The pack opening device 2 mainly includes a magnet roller 90 and a drive shaft 91, and is set so that it can be easily engaged when driven in the pack opening direction. Accordingly, when the required torque at the time of opening the pack is increased, the pressing force of the magnet roller 90 on the tongue piece 21 is also increased, and as a result, the conveying force is increased. The magnet roller 90 may have a structure divided into a plurality. The roller section is provided with an entrance guide plate 3 and a tongue piece 21.
The tongue piece 2
When the roller 1 comes into contact with the magnet roller 90, the roller is lifted, so that the tongue piece 21 can easily enter (FIG. 3).
1).

Here, the paper pack 20 will be described.

FIG. 22 is an exploded view of a packing sheet of a paper pack, FIG. 23 is a schematic view of an opening process of the paper pack, and FIG.
(A), (b) is an explanatory view of a bonding portion, and FIGS.
(C) and FIGS. 26 (a) to (c) are explanatory diagrams of the packaging process. One packaging sheet 20A, 20B is made of two sheet materials having different strengths, and the packaging sheet 20A having the larger strength is used. The parts are the respective plate portions 20a, 20b, 20c, 20
d, 20e, 20f, 20g, and 20h, and a tongue piece 21 integral with the packaging sheet 20A. The tongue piece 21 is reinforced with a mylar or the like so as not to bend.

At the time of packaging, as shown in FIG. 25 (a), it is wound clockwise with reference to the upper left corner, and as shown in FIG.
See (a). Thereafter, as shown in FIG. 25 (c), winding is performed in the opposite direction (counterclockwise). When the tongue piece 21 reaches the reference diagonal position, the winding ends, and bonding is performed as shown in FIG. 24 (b). Finally, as shown in FIGS. 26 (a), (b) and (c), the side faces are folded inward and bonded.

At the time of opening, as shown in FIGS. 23A and 23B, the adhesive portion at the reference position is first peeled off by pulling the tongue piece 21, and the strength is changed by further pulling. The two packaging sheets 20A and 20B are cut and opened at the boundary positions. 3 and FIG.
(D) shows the situation.

FIG. 27 is an explanatory diagram for calculating the length of the tongue piece. The length of the tongue piece 21 is determined from the relationship between the magnet roller 90 and the back fluence 10.

That is, L1 is the distance from the center of the magnet roller 90 to the back fence 10, L2 is the thickness of the back fence 10, L3 is the length of the tongue piece 21, L3
According to the condition of .gtoreq.L1 + L2, the tongue piece 21 is located below the magnet roller 90 when the back fence 10 hits the rear end of the paper pack 20, so that the tongue piece 21 can be reliably pulled.

FIG. 28 is an overall control block diagram in which a program for performing various controls according to the present invention is stored in the ROM 100 and RA.
The process is executed by M101 and CPU102. CPU10
2 obtains information from a sensor group 104 composed of S1 and S2 via a bus 103 and controls a motor group 105 composed of M1 and M2. The sensors include a paper presence / absence detection sensor and a paper pack detection sensor. Examples of the motor include a transport motor for the paper pack 20 and a motor for moving the pack opening device. Reference numeral 106 denotes an I / O port, 107 denotes a motor current detection circuit, and 108 denotes a motor drive circuit.

The locking mechanism of the door will be described with reference to FIGS.

FIGS. 29 and 30 are a perspective view and a front view showing one example, and FIG. 31 is a front view showing another example.

Only when the paper end detecting filler 110 shown in FIG. 31 is lowered and the paper end is detected,
The solenoid 111 is turned on to retract the door lock member 112, and the door (represented by the door 31) can be opened and closed (examples in FIGS. 29 and 30). In the example of FIG. 31, the door lock filler 113 is opened and closed in the same manner.

This is also true for the paper cassette. That is, as shown in FIG. 32, the door lock member 112 at the tip of the solenoid 111 is configured to be able to protrude and retract from the side wall of the paper cassette 120, and only when the paper cassette 120 is at the paper end, the paper cassette 120 is closed. Can be taken out.

FIG. 33 is a flowchart of the overall control (paper pack automatic opening control).
It is determined whether there is a sheet inside (S1). If there is, the doors 31 to 33 are locked so that the sheet pack 20 cannot enter. Alternatively, even if the paper pack 20 is inserted, the conveyance control is not performed.

When there is no more paper in the paper cassette 120, first, a preparation operation is started in preparation for insertion of the paper pack 20. That is, the back fence 10 and the side fence 7
Is moved to the retreat position, and the bottom plate 6 is lowered. During this time, the locked state of the doors 31 to 33 is still maintained so that the paper pack 20 cannot be inserted.

Here, the retracted position of the back fence 10 is outside the paper cassette 120 (or the tray 6) draw-out portion, and the retracted position of the side fence 7 is outside the maximum paper size.

When the preparation for insertion is completed, the locks of the doors 31 to 33 are released, and the inserted paper pack 20 is conveyed into the tray 6 or the paper supply cassette 120 to detect the paper size. ). If there is no transport error (NO in S4), a pack opening control subroutine (S5) is executed, and further a paper set subroutine (S6) is executed.

Here, the packing opening operation will be further described.

FIG. 31 shows the positional relationship between the magnet roller 90 and the drive shaft 91 shown in FIG. As shown in FIG. 9A, the drive shaft 91 is connected to the magnet roller 9.
The distance L between the bottom of the paper pack storage unit (paper mounting surface) 81 and the lower end of the drive shaft 91 is smaller than the diameter 2r of the magnet roller 90 and larger than the radius r. In other words, the lower end of the drive shaft 91 is located between 2r and r (that is, r ≦ L <2r). As shown in FIG. 2B, when the tongue piece 21 comes below the magnet roller 90, the magnet roller 90 pulls the tongue piece 21 without rotating the magnet roller 90. At this time,
The back fluence 10 is fixed at the position where the paper pack 20 is set, and serves to stop the paper when the magnet roller 90 is rotated to pull the paper in the direction a as shown in FIG. I do. The pack is opened by pulling the pack with the paper stopped (see FIG. 3).

The pack opening device 2 moves while opening the paper and reaches the trash box 1. The sheet mounting surface 81 facing the magnet roller 90 is formed of a low friction member such as a Teflon sheet.

[0061]

As described above, according to the present invention,
After the paper pack inserted by the user is automatically attached to the paper feeding position in the paper feeding device main body by the paper pack conveying means,
Since the wrapping sheet of the paper pack is automatically removed by the wrapping sheet removing means, the paper supply operation can be significantly simplified.

In the first and second aspects of the present invention,
A protruding portion (tongue) formed at one end of the packaging sheet of the paper pack placed on the paper placing means is pinched by the removing means constituted by a roller and the paper placing surface of the paper placing means. The removing means is moved while being kept, and the projecting portion of the packaging sheet is transferred to the sheet entrance of the packaging sheet accommodating means disposed downstream of the removing means in the moving direction. By forming the portion of the sheet placement surface where the rollers face each other with a low friction member, it is possible to remarkably improve nipping of the protruding portion by the removing means, transportability and paper replenishment.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an entire copying machine according to an embodiment of the present invention.

FIG. 2 is a perspective view of a sheet feeding device according to the embodiment of the present invention.

FIG. 3 is a perspective view showing a paper pack and an opening process thereof.

FIG. 4 is a perspective view of a door of a paper insertion slot.

FIG. 5 is an enlarged perspective view of a door of a paper insertion slot.

FIG. 6 is a top view of a paper insertion door.

FIG. 7 is a perspective view showing a state where a paper pack is inserted into a paper insertion slot.

FIG. 8 is a perspective view showing another example of the door.

FIG. 9 is a top view showing another example of the door.

FIG. 10 is a perspective view illustrating an example of a paper pack detection mechanism.

FIG. 11 is a perspective view of a transport roller unit.

FIG. 12 is an explanatory diagram showing a state of a paper pack entering and rotation of a conveyance roller.

FIG. 13 is a configuration diagram illustrating an example of a pseudo load member of a transport roller.

FIG. 14 is a configuration diagram illustrating another example of the pseudo load member of the transport roller.

FIG. 15 is a longitudinal sectional view of the pseudo load member shown in FIG.

FIG. 16 is a perspective view showing a moving mechanism of a side fence.

FIG. 17 is a perspective view of a state in which the side fence is folded down.

FIG. 18 is a perspective view of a back fluence moving mechanism.

FIG. 19 is a perspective view of a back fence and a packing opening device.

FIG. 20 is a side view showing a positional relationship between the back fluence and the bottom surface of the paper pack storage unit.

FIG. 21 is a front view showing the positional relationship between the back fence and the bottom surface of the paper pack storage unit.

FIG. 22 is a development view of a packaging sheet for a paper pack.

FIG. 23 is a schematic view of the process of opening the paper pack.

FIG. 24 is an explanatory diagram of a bonding portion.

FIG. 25 is an explanatory diagram of a process of packing a paper pack.

FIG. 26 is an explanatory diagram of a packing process of a paper pack.

FIG. 27 is an explanatory diagram of tongue piece length calculation.

FIG. 28 is an overall control block diagram.

FIG. 29 is a perspective view showing an example of a door locking mechanism.

FIG. 30 is a front view showing an example of a door locking mechanism.

FIG. 31 is a perspective view showing another example of the locking mechanism of the door.

FIG. 32 is a perspective view showing a locking mechanism of the sheet cassette.

FIG. 33 is a flowchart of overall control.

FIG. 34 is an explanatory diagram showing a positional relationship between a magnet roller and a drive shaft in the pack opening device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dust box 2 Pack opening device 4 Drive motor 6 Tray 7 Side fence 8 Conveyance roller 9 Paper feed roller 10 Back fence 11,12,13 Paper insertion opening 14a Pack opening device drive motor 14b Back fence drive motor 20 Paper pack 20A, 20B Packaging sheet DESCRIPTION OF SYMBOLS 21 Tongue piece 31, 32, 33 Door 36 Guide piece 51 Drive gear 53 Planetary gear 54 Follower roller 70 Side fence drive motor 81 Storing section bottom surface (sheet mounting surface) 82 Barrier 83 Gap 90 Magnet roller 100 ROM 101 RAM 102 CPU 103 Bus 104 Sensor group 105 Motor group 110 Paper end filler 111 Solenoid 112 Door lock member 113 Door lock filler 120 Paper feed cassette

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenshi Yamakawa 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company, Ltd. (72) Inventor Masaru Shiina 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (72) Inventor Keisuke Hayashi 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) B65H 1/00- 3/68

Claims (3)

(57) [Claims] 1. A sheet feeding device main body, a sheet placing means provided at a predetermined position in the sheet feeding device main body, and one end of a package sheet of a paper pack placed on the sheet placing means protrudes. Packaging sheet removing means for removing the packaging sheet by pulling the protruding portion while nipping it between the paper placing surface of the paper placing means,
A packaging sheet accommodating means for disposing the packaging sheet removed by the packaging sheet removing means, the packaging sheet removing means being disposed downstream of the packaging sheet removing means in the pulling direction of the protrusion. A sheet feeding device of an image forming apparatus capable of storing a removed packaging sheet in the packaging sheet storage means, wherein one end of the packaging sheet is delivered to a sheet entry portion of the packaging sheet storage means. 2. The sheet feeding device of an image forming apparatus according to claim 1, wherein said wrapping sheet removing means is constituted by a roller. 3. The image forming apparatus according to claim 2, wherein the sheet placement surface facing the roller is formed of a low friction member. Paper equipment.