JPH0543061A - Paper sheet storage case and paper feeding device - Google Patents

Abstract

PURPOSE:To prevent the oblique motion of paper sheets at the time of paper feeding even if unevenness exists in sheet cutting dimensions by openedly providing a paper feeding port for feeding loaded and stored sheets to the outside, and also a through hole on a side wall orthogonal to a side wall on which the paper feeding port is openedly provided, and fitting a bendable film so as to cover the through hole. CONSTITUTION:A paper feeding port 10 for feeding loaded and stored sheets to the outside is openedly provided. A through hole 45 is openedly provided on a side wall orthogonal to a side wall on which the paper feeding port 10 is openedly provided, and a bendable film 46 is mounted so as to cover the through hole 45. Consequently a sheet storage case can be provided in which the sheets can be stored even if dispersion exists in sheet cutting dimensions and become elastic due to humidity, and also the oblique motion of them is eliminated in feeding sheets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper storage case and a paper feeding device that can be used in a thermal printing device and the like, and is particularly suitable for feeding small and thick paper.

[0002]

2. Description of the Related Art A conventional paper storage case has only a paper feed port provided in a paper feed section for feeding paper to the outside. Further, a conventional general sheet feeding device is provided with so-called registration means, and even if the posture of the paper fed from the paper storage case is slightly skewed, the proper posture is maintained by the registration means. Be corrected to.

[0003]

In the sheet feeding device provided with the above-mentioned registration means, there is a clearance between the paper in the paper storage case and the inner side wall of the paper storage case, Will be corrected even if it is skewed. However, since the paper is curled when the paper is corrected by the registration means, it is not suitable for feeding thick paper or small paper that is hard to curl.

Therefore, when feeding thick paper or small paper that is hard to curl, it is necessary to use a paper feeding device that is not provided with registration means, but in this state, skewing of the paper is prevented. To do so, it is necessary to remove the clearance between the paper and the inner wall of the paper storage case.

However, the size of the paper varies, and it is difficult to match the inner size of the case. Even if the variation in the cut size of the paper is removed, the paper generally has high hygroscopicity and expands or contracts by 1% or more depending on the humidity. Therefore, when the conventional paper storage case is used, when the paper size is large, it becomes impossible to store it in the paper storage case, and when the paper size is small, the paper storage case is used. There is a possibility that a clearance may be generated between the inner wall and the inner wall and the vehicle may skew.

The present invention has been made in view of the drawbacks of the prior arts described above.
The present invention is not intended to realize a paper storage case and a paper feeding device that can prevent skew of paper.

[0007]

A first main invention is a paper storage case in which paper is stacked and stored, and a paper supply port for supplying the paper to the outside is provided with a paper supply port. It is characterized in that a through-hole is formed in a side wall orthogonal to the side wall in which the paper feed port is formed, and a film having a betability is attached so as to close the through-hole.

A second main invention is a paper storage case in which papers are stacked and stored, and a paper supply port for supplying the papers to the outside is provided with a paper supply port, wherein the paper supply port is opened. The side wall orthogonal to the side wall is provided with a through hole, and a flexible tongue piece is formed on the through hole.

A third main invention is a paper storage case in which papers are stacked and stored, and a paper supply port for supplying the papers to the outside has a paper supply port. The flexible tongue piece that protrudes inward is formed on the side wall that is orthogonal to the side wall that is formed.

A fourth main invention is a paper storage case in which paper is stacked and stored, and a paper supply port for supplying the paper to the outside is provided with a paper supply port, wherein the paper supply port is opened. The elastic film having bulging elasticity is mounted on the side wall orthogonal to the side wall.

According to a fifth main invention, in a paper feeding device in which a paper storage case in which papers are stacked and stored is mounted, a paper feed port for supplying the papers to the outside is provided with a paper feed port, A paper storage case having a through hole on a side wall orthogonal to a side wall where the paper feed port is opened, a positioning member for positioning the paper storage case, and the through hole with the paper storage case positioned And a pressing means for directly pressing the side edge of the accommodated sheet through the sheet.

According to a sixth main aspect of the present invention, in a paper feeding device in which a paper storage case for stacking and storing papers is mounted, a paper supply port for supplying the papers to the outside is provided with a paper feed port, A paper storage case in which a transparent opening is formed in a side wall orthogonal to the side wall in which the paper feeding opening is formed, and a flexible film is attached so as to close the transparent opening, and the paper storage case. A positioning member for positioning the
Pressing means for pressing the film inward of the paper storage case with the paper storage case positioned is provided.

[0013]

In the first main invention, the through hole is formed on the side wall orthogonal to the side wall where the paper feed port is formed, and the film having the sewability is attached so as to close the through hole. Therefore, even if the inner size of the paper storage case is set slightly larger than the size of the paper, when the film is pressed from the outside while the paper is stored, the paper is positioned in the paper storage case and the inner wall There is no clearance between and.

In the second and third main inventions, since the tongue piece having the bendability is formed on the side wall orthogonal to the side wall where the paper feed port is opened, the inner dimension of the paper storage case is set to the paper size. Even if the size is slightly larger than the size, the tongue piece presses the sheet against the other side wall, so that the sheet is positioned in the sheet storage case.

In the fourth main invention, since the elastic film having the bulging elasticity is mounted on the side wall orthogonal to the side wall where the paper feed port is opened, the inner dimension of the paper storage case can be reduced. Even if the size of the paper is slightly larger than the size of the paper, the paper is pressed against the other side wall by the tongue and thus positioned in the paper storage case.

In the fifth main aspect of the invention, the pressing means is provided which directly presses the side edge of the stored paper through the through hole while the paper storage case is positioned.
Even if the inner dimension of the paper storage case is set to be slightly larger than the size of the paper, when the paper is stored and pressed by the pressing means, the paper is positioned in the paper storage case, and the inner wall and There is no clearance between.

In the sixth main invention, since the pressing means for pressing the film from the outside is provided, even if the inside dimension of the paper storage case is made slightly larger than the size of the paper, the paper is stored. When the film is pressed from the outside by the pressing unit in the state where the film is present, the paper is positioned in the paper storage case, and there is no clearance between the paper and the inner wall.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention. FIG. 1 is a schematic internal configuration diagram of a small-sized thermal recording apparatus to which the present invention is applied, and FIG. 2 is a first embodiment of a paper storage case. Bottom view,
3 is a front view of the first embodiment of the paper storage case, FIG. 4 is a partial plan view of the first embodiment of the paper storage case in a mounted state, and FIG. 5 is a case of the first embodiment of the paper feeder. 6 is a partial perspective view of the inside of the first embodiment of the paper storage case, FIG. 7 is a partial perspective view of the interior of the second embodiment of the paper storage case, and FIG. FIG. 9 is a partial perspective view of the case holding portion of the second embodiment of the apparatus, FIG. 9 is a partial perspective view of the case holding portion of the third embodiment of the paper feeding device, and FIG. 10 is a third embodiment of the paper storage case. It is a top view.

First, the overall structure of the thermal recording apparatus will be described mainly with reference to FIG. 1 has a bottom of 30 cm ×
In the main body of the apparatus of about 25 cm, a paper stacking portion 3 whose bottom surface is inclined downward toward the front when viewed from the side of the operation panel 2 is formed on the upper portion. The sheet stacking unit 3 is provided with a large-diameter sheet feeding roller 4, which contacts the lower surface of the lowermost sheet 5 on the upstream side (obliquely upward) along the sheet feeding direction and holds it. A guide roller 6 for guiding is mounted rotatably. The width of the sheet stacking unit 3 is set to be slightly longer than the short side of the postcard. In this embodiment, the paper 5 is made of thick thermal printing paper having a thickness of about 0.1 mm to 0.3 mm cut into a business card size.

A case 7 in which the unprinted business card paper 5 is stacked and stored in the paper stacking section 3 in a lateral feeding posture (a posture in which the short side of the paper is parallel to the feeding direction) is removable. Is attached to. As shown in FIGS. 2 to 4, the case 7 is provided with an opening 8 at a portion corresponding to the guide roller 6 so that at least a part of the guide roller 6 on the circumferential side can be exposed at the inner bottom. In addition, a rib 9 as a gauge member for positioning is formed on the side including the corner so as to extend partially in parallel with the side.

On the front side of the case 7, there are several sheets of paper 5.
The paper feed port 10 through which the paper is able to pass and the notches 11 and 12 into which a part of the paper feed roller 4 can be inserted are cut. When the case 7 is attached to the paper stacking unit 3, the paper feed roller 4
Contacts the lower surface of the downstream end of the sheet 5 through the notches 11 and 12, and the guide roller 6 contacts the lower surface near the center of the sheet 5 through the opening 8. Then, the lowermost sheet 5 is fed to the downstream side by rotationally driving the sheet feeding roller 4, and the guide roller 6 is driven by the sheet 5 at that time.

A transparent port 45 is formed on a side wall of the case 7 which is orthogonal to the side wall where the sheet feeding port 10 is formed, and the flexible film 4 is formed so as to close the transparent port 45.
6 is installed. The film 46 is formed of a flat polyester resin at least on the side surface in sliding contact with the side edge of the stacked sheets 5, and has a thickness of 0.1 mm to 1 mm.

A groove 56 is cut along the side wall at the bottom of the side wall where the through hole 45 of the case 7 is opened, and the bottom edge of the film 46 is inserted into the groove 56. Further, as shown in FIG. 6, projections 47 and 48 are formed on the film 46 at diagonal positions, and the projections 47 and 48 are inserted into the notches 57 formed in the case 7 and the paper feed port 10. And is attached to the inner wall of the case 7. The groove 5
6 and the notches 57 are formed to be slightly wider than the thickness of the film 46, and the film 46 is mounted on the inner wall of the case 7 with a margin (play).

Further, a slit 55 extending in the vertical direction is cut in the vicinity of the sheet feed port 10 (downstream side of the through port 45) of the film 46, and the slit 55 is formed on the sheet 5. The purpose is to prevent the corners from being caught and curved upward and difficult to pass through the sheet feeding port 10. In addition,
One through hole 45 may be provided on each of the downstream side and the upstream side of the same side wall along the sheet feeding direction.

A pair of guide members 13 and 14 for positioning the both sides of the rib 9 parallel to the sheet feeding direction of the case 7 are mounted on the sheet stacking section 3. Both guide members 13,
14 are configured so as to be able to move in mutually opposite directions by a uniform dimension in the direction orthogonal to the feeding direction with the center of these intervals as a reference. And both the guide members 13,
In the case of 14 being close to each other, the inner space is case 7
The width is set to be substantially the same as the width in the longitudinal direction of the sheet, and is set to be substantially the same as the width in the direction orthogonal to the feeding direction of the sheet 5 (width in the longitudinal direction) on the downstream side of the case 7. Is formed.

As shown in FIG. 5, one guide member 14 is provided with a bent portion 40 extending in a direction parallel to the sheet feeding direction and bent upward. Part 40
In addition, a base end portion of a swing lever 41, which has an L-shaped tip portion as a pressing means, is swingably attached to a support shaft 42. On the support shaft 42, a compression coil spring is wound around the support shaft 42 as a suppressing unit for pressing the base end portion of the rocking lever 41 against the fixed piece 43 to suppress the rocking motion.

Further, further on the outer circumference of the compression coil spring,
The torsion spring 44 is wound, and its working end contacts the outer surface of the rocking lever 41, and
Are pressed and urged toward the film 46. The strength of the torsion spring 44 is such that it overcomes a so-called twist (skew) when the sheet 5 is fed, and more specifically, L
Approximately 50-70 grams is appropriate for the V-shaped tip.

On the upper part of the rocking lever 41, there is provided a restricting member 49 for restricting the rotation range of the rocking lever 41 and supporting the other end of the torsion spring 44. Further, the regulation member 49 abuts on the corresponding portion (hexagonal) of the support shaft 42 and also serves as a rotation stop for the support shaft 42. Further, guide rollers 52 and 51 for locating and guiding both side edges of the fed sheet 5 are rotatably mounted at the downstream ends of the guide members 13 and 14, respectively.

When the guide members 13 and 14 approach each other with the case 7 held, the swing lever 41
The tip of the film pushes the film 46 inward by the elastic force of the torsion spring 44 through the opening 50 formed in the bent portion 40 and the through hole 45 of the case 7.

The film 46 has flexibility,
Further, as described above, since it is mounted on the inner side wall of the case 7 with a margin, when pressed by the tip of the swing lever 41, the film 46 moves inward and appropriately bends, and the paper 5 Is fixed on the side wall of the film 46 opposite to the case 7.

On the side wall on the opposite side of the case 7, the above-mentioned through hole 45 is not opened, and the swing lever 41 is not attached to the other guide member 13. Therefore, when the sheets 5 are stacked and stored in the case 7,
Positioning is indirectly performed by the guide member 13 via the case 7. Instead of mounting the film 46 on the case 7, a flexible tongue may be hung down through the through hole 45 and the swing lever 41 may press the tongue from the outside. It is possible.

Above the downstream side of the sheet stacking section 3, a substantially L-shaped curve is formed to press the uppermost sheet 5 in the case 7 downward (see FIG. 1). A pressing lever 15 biased in the direction is provided so as to swing about the support shaft 16 as a fulcrum. The pressing lever 15 is interlocked with the guide members 13 and 14, and by operating an operation lever (not shown), the guide levers 13 and 14 approach each other, and at the same time, the pressing lever 15 moves to the uppermost part in the case 7. The paper 5 is pressed downward.

A box-shaped lid (not shown) is usually attached to the case 7, but the lid is detached when it is attached to the apparatus main body 1. Therefore, the upper part of the case 7 is open, the free end of the pressing lever 15 presses the paper 5 downward, and the lower surface of the lowermost paper 5 is pressed against the paper feed roller 4 and the guide roller 6 during thermal printing. And the paper is fed smoothly. The upper portion of the case 7 may not be completely opened, and the lid may be provided with an opening through which the pressing lever 15 can pass.

A pair of relay rollers 17 and 18 are provided on the downstream side of the paper feed roller 4, and the relay roller 1 is provided.
A platen roller 19 and a thermal head 20 as a thermal printing unit that is pressed against the platen roller 19 are provided downstream of the plates 7 and 18. A large number of heat generating elements are arranged in the thermal head 20 in a direction orthogonal to the moving direction of the paper 5, and the arrangement area of the heat generating elements is set to be substantially the same as a postcard.

Although the paper feed roller 4 feeds the paper 5 without a gap, the relay rollers 17 and 18 rotate at a slightly higher speed than the paper feed roller 4, so that the relay rollers 17 and 1 are provided.
Every time one sheet 5 is fed at 8, a slight gap (about 4 mm) is formed between the upstream sheet 5 and the downstream sheet 5, and the sheet 5 causes the sheet 5 to be described later by a photo sensor 25.
To be detected.

The thermal head 20 has its holder 21.
The holder 21 is pressed downward by the leaf spring 22. Therefore, the thermal head 20
The platen roller 19 is driven by the elastic force of the leaf spring 22.
Will be pressed against. The holder 21 is configured so as to be swingable around a support shaft 23 of the upper relay roller 17 as a fulcrum, and a lock member 24 is provided on the apparatus main body 1 side. Further, a reflection type photo sensor 25 for detecting the arrival of the paper 5 and controlling the start timing of the printing operation is attached to the holder 21. 26
Is a bottom guide which is inclined downward toward the front when viewed from the side of the operation panel 2, and the paper 5 moves along the bottom guide 26.

On the downstream side of the thermal head 20, a paper discharge roller 27 for discharging the printed paper 5 is provided.
The lid of the case 7 is detachably mounted upside down on the downstream side of the paper discharge roller 27 under the operation panel 2, or a general business card storage box 28 is detachably mounted. Has been done. A used case 7 may be attached instead of the business card storage box 28.

A document 2 is placed above the thermal head 20.
A document feeding unit for feeding 9 and a document reading unit for reading the written image of the fed document 29 and converting it into an electric signal are provided. The document conveying means is a pair of document conveying rollers 30,
And the document conveying rollers 30 and 31.
Of the transmission type photo interrupter 3 for detecting the original 29 and controlling the reading timing on the downstream side and the upstream side of the document, respectively.
2, 33 are provided. The document conveying roller 30,
A contact type image sensor 34 is provided on the downstream side of 31 as a document reading means, and a document platen roller 35 for bringing the document 29 into contact with the image sensor 34 is lightly attached to the lower surface of the image sensor 34. Pressed.

The operation panel 2 is configured to rotate counterclockwise (upward) about the support shaft 37 as a fulcrum, and when the operation panel 2 is rotated and opened in the direction A in the figure, the image sensor 34 is rotated. Original platen roller 35,
Document transport rollers 30, 31 and photo interrupter 3
2, 33, etc. wait in one upward direction. Therefore, the holder 21 of the thermal head 20 can be opened in the B direction with the support shaft 23 as the fulcrum.

Further, when the operation panel 2 is opened, the operation panel 2 is supported on both sides by leaf springs (not shown) to maintain the open state. In this state, the lower original conveying roller 30 and the original platen are held. The supporting member 38, to which the roller 35 is attached, rotates and opens in the C direction around the supporting shaft 36 as a fulcrum, and the image sensor 34 and the original platen roller 3
5, and the space between both document transport rollers 30 and 31 is opened.

The transport path for the original document 29 is also inclined downward to the front side when viewed from the operation panel 2 side, like the transport path for the sheet 5. Then, the read document 29 is configured to drop on the mounting portion of the business card storage box 28.

In the above embodiment, the case of printing on the business card size paper 5 has been described. However, when printing on a relatively large paper, for example, a postcard size paper, the upstream side is regulated to correct the skew. Since it is easier and more effective, case 7 as shown in FIG. 7 may be adopted. In the case 7, a through-hole 45 extending from the side wall to the bottom wall is formed on the upstream side (a portion near the side wall opposite to the side wall where the paper feed port 10 is opened) along the paper feeding direction. Mouth 45
A tongue piece 53 hangs from the upper edge.

The tongue piece 53 is relatively hard and has elasticity, and its lower end portion is slightly bent inward, so that the tongue piece 53 alone holds the sheet 5 on the side wall opposite to the case 7. Press to position. Therefore, in this case, the pressing means as described above is not necessary. Further, the through hole 45 does not necessarily have to be opened, and even if the through hole 45 is not opened and a tongue piece similar to the tongue piece 53 is provided at a desired portion of the inner wall of the case 7. Good

The tongue piece 5 is used to improve the correction.
3, the downstream side edge of the sheet 5 is the relay rollers 17, 18
It is preferable that the upstream side edge is not separated by the time when the sheet reaches the upper end, that is, the downstream side edge of the sheet 5 contacts the upstream side edge even if the downstream side edge reaches the relay rollers 17 and 18.

Further, the pressing means is formed by a leaf spring 54 having one end fixed to the guide member 13 as shown in FIG. 8, instead of the swing lever 41.
The other end may be bent in an L shape so as to contact the outside of the film 46.

Furthermore, as shown in FIG. 9, only a through hole 45 is opened in the case 7, only a swing lever 41 and a torsion spring 44 are provided as a pressing means, and the tip portion of the swing lever 41 is provided. It is also possible to configure so as to directly press the side edge of the stored sheet 5 through the through hole 45. However, in this case, the tip portion of the swing lever 41 needs to be smooth.

It should be noted that, in the case 7, as shown in FIG. 10, a side wall orthogonal to the side wall in which the paper feed port 10 is opened has a function similar to that of the tongue piece 45 shown in FIG.
An elastic film 58 having bulging elasticity may be attached to the inside.

[0048]

According to the present invention, even if the inside dimension of the paper storage case is set slightly larger than the size of the paper, the paper is positioned in the paper storage case while the paper is stored.
It is possible to eliminate the clearance with the inner wall. Therefore, the paper can be stored in the large paper storage case, and even if the cutting size of the paper varies, the paper can be accommodated even if it is expanded or contracted due to the influence of humidity.

Further, even if the paper is stored in a large paper storage case, the clearance can be substantially eliminated, and therefore the paper does not skew. Furthermore, if the paper storage case becomes a cassette as it is and the lid is attached to the paper storage case, it can be used as a normal business card case or postcard case after printing.

[Brief description of drawings]

FIG. 1 is a schematic internal configuration diagram of a small thermal recording apparatus to which the present invention is applied.

FIG. 2 is a bottom view of the first embodiment of the paper storage case according to the present invention.

FIG. 3 is a front view of the first embodiment of the paper storage case according to the present invention.

FIG. 4 is a partial plan view of the first embodiment of the paper storage case of the present invention in a mounted state.

FIG. 5 is a partial perspective view of a case holding portion of the first embodiment of the paper feeding device of the present invention.

FIG. 6 is a partial perspective view of the inside of the first embodiment of the paper storage case of the present invention.

FIG. 7 is a partial perspective view of the inside of a second embodiment of the paper storage case of the present invention.

FIG. 8 is a partial perspective view of a case holding portion of the second embodiment of the paper feeding device of the present invention.

FIG. 9 is a partial perspective view of a case holding portion of a third embodiment of the paper feeding device of the present invention.

FIG. 10 is a plan view of a third embodiment of the paper storage case according to the present invention.

[Explanation of symbols]

 1 Device Main Body 2 Operation Panel 3 Paper Loading Section 4 Paper Feeding Roller 5 Paper 6 Guide Roller 7 Case 8 Opening 9 Rib (Gauge Member) 10 Paper Feeding Port 11 Notch 12 Notch 13 Guide Member 14 Guide Member 15 Push Lever 16 Support Shaft 17 Relay roller 18 Relay roller 19 Platen roller 20 Thermal head 21 Holder 22 Leaf spring 23 Support shaft 24 Lock member 25 Photo sensor 26 Bottom guide 27 Paper ejection roller 28 Business card storage box 29 Document 30 Document transport roller 31 Document transport roller 32 Photo interrupter 33 Photo interrupter 34 Image sensor 35 Original platen roller 36 Support shaft 37 Standing shaft 38 Supporting member 39 Power source 40 Bending portion 41 Swing lever 42 Support shaft 43 Fixing piece 44 Coil spring 45 Through hole 46 Film 47 Protrusion 48 Protrusion 49 Control member 50 Opening 51 Guide roller 52 Guide roller 53 Tongue piece 54 Leaf spring 55 Slit 56 Groove 57 Notch 58 Resilient film

Claims (14)

[Claims] 1. A paper storage case in which paper is stacked and stored, and a paper supply port for supplying the paper to the outside is provided with a paper feed port, which is orthogonal to a side wall where the paper feed port is opened. A sheet storage case, characterized in that a side wall has a through hole and a flexible film is attached so as to close the through hole. 2. The paper storage case according to claim 1, wherein the film is mounted on an inner surface of a side wall having a through hole. 3. The paper storage case according to claim 1, wherein at least the side surface of the film, which comes into sliding contact with the side edge of the stacked paper, is formed flat. 4. The film is formed of plastics and has a thickness of 0.1 mm to 1 mm.
The paper storage case according to claim 3. 5. A paper storage case in which papers are stacked and stored, and a paper supply port for supplying the papers to the outside is provided with a paper supply port, which is orthogonal to a side wall where the paper supply port is opened. A sheet storage case, wherein a side wall is provided with a through hole, and a flexible tongue piece is formed on the through hole. 6. A paper storage case in which paper is stacked and stored, and a paper supply port for supplying the paper to the outside is provided with a paper supply port, which is orthogonal to a side wall where the paper supply port is opened. A paper storage case characterized in that a flexible tongue piece is formed on the side wall so as to project inward. 7. The paper storage case according to claim 6, wherein the tongue piece has elasticity and is bent or curved inward. 8. The paper storage case according to claim 7, wherein the tongue piece is provided at a portion near a side wall opposite to the side wall where the paper feed port is opened. 9. A paper storage case in which papers are stacked and stored, and a paper supply port for supplying the papers to the outside has a paper feed opening, which is orthogonal to a side wall where the paper feed opening is formed. A paper storage case characterized in that a side wall is provided with an elastic film having a bulging elasticity inside. 10. An opening provided in the bottom portion, through which a part of the peripheral side of a guide roller for holding and guiding the lowermost paper among the stacked and stored papers can be exposed. Item 10. The paper storage case according to any one of Items 9. 11. A paper feeding device equipped with a paper storage case for stacking and storing paper, wherein a paper supply port for supplying the paper to the outside is provided with a paper supply port, and the paper supply port is opened. A side wall that is orthogonal to the side wall that is formed with a through hole, a paper storage case, a positioning member that positions the paper storage case, and a state in which the paper storage case is positioned. A sheet feeding device, comprising: a pressing unit that directly presses a side edge of a sheet of paper. 12. A paper feeding device equipped with a paper storage case for stacking and storing paper, wherein a paper supply port for supplying the paper to the outside is provided with a paper supply port, and the paper supply port is provided. A side wall that is orthogonal to the side wall having a transparent opening, and a paper storage case in which a flexible film is mounted so as to close the opening, and a positioning member that positions the paper storage case. And a pressing unit that presses the film inwardly of the paper storage case with the paper storage case positioned. 13. The pressing means biases one end of a swinging lever mounted on a positioning member so as to be horizontally swingable, and the other end of the swinging lever toward a through hole of a paper storage case. 13. The sheet feeding device according to claim 11 or 12, wherein the other end of the swing lever is configured to abut against a side edge of the sheet or an outside of the film. 14. The pressing means is formed by a leaf spring having one end fixed to the positioning member, and the other end of the leaf spring is in contact with the outside of the film.
Alternatively, the paper feeding device according to claim 12.