JP2001226003A - Paper powder removing device for stitch paper and printer with paper powder removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively remove paper powder existing in sheets of stitch paper and positively prevent the occurrence of printing trouble due to paper powder. SOLUTION: Paper powder suction means 60 has two suction ports 61, 61 which are arranged at both sides extending along the feeding direction of the stitch paper 6, opposed to each other toward the side face of the stitch paper 6. Paper powder exists in the stitch paper 6 between the surface and the reverse and between the sheets of paper. The paper powder existing between the surface and the reverse as well as between the sheets of paper is removed with suction by the paper powder suction means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feed system in which paper feed holes are provided at both sides extending in the paper feed direction at a constant interval in the paper feed direction, and a plurality of paper feed holes are provided between the paper feed holes. The present invention relates to a paper dust removing device that removes paper dust present in a binding sheet having a binding cut-off portion for a paper leaf formed appropriately, and a printer including the paper dust removing device.

[0002]

2. Description of the Related Art Conventionally, a printer is provided with a print head and a platen, and printing paper is fed toward a gap between the print head and the platen using a feeding mechanism, and printed at a predetermined timing. The head is reciprocated in the paper width direction (column direction) orthogonal to the feeding direction, and the platen is intermittently rotated to feed the printing paper in the feeding direction (line direction).
2. Description of the Related Art There is known a configuration in which an impact wire is made to protrude and retract via an ink ribbon and dots are printed on the surface of printing paper to perform printing.

FIG. 6 is a perspective view showing an example of a conventional printer viewed from the rear side. In FIG. 6, reference numeral 1 denotes a printer main body. The printer body 1 includes a cylindrical platen 2, a print head 3, a carriage shaft 4, and a paper feed mechanism 5.
Are provided. Reference numeral 6 denotes a printing sheet. Paper feed holes 7 are formed at both sides of the printing paper 6 at regular intervals in the feeding direction. The paper feed mechanism 5 includes, for example, a mechanism generally constituted by a pair of tractors 8 and guide shafts 9 and 10. The tractor 8 generally includes an endless belt 12 provided with a feed pin 11 that fits into a paper feed hole 7 provided in the printing paper 6, a feed base 14 and a cover 13, as shown in FIG. Have been. The endless belt 12 is driven by the guide shafts 9 and 10 to rotate in the direction of the arrow shown in FIG. 7, and the printing paper 6 is fitted with the paper feed hole 7 and the feed pin 11 and the endless belt 12 rotates. Is fed rightward as shown in FIG.
Further, the cover body 13 provided on the feeding base 14 is rotatable, and at the time of feeding, the printing paper 6 is fed to the endless belt 1 for feeding.
It is formed so as to be pressed lightly toward 2.

In a printer having this configuration, a binding sheet in which a plurality of sheets are bound may be used as a printing sheet. FIG. 8A shows the binding paper.
As shown in (B), the binding holes between the sheet feeding holes 7 which are present at regular intervals in the feeding direction on both sides extending along the feeding direction and the adjacent sheet feeding holes are appropriately used for binding. A cut piece (so-called gather) 17 is formed.

[0005] Here, in a state before printing, between the front and back surfaces of the binding paper or between a plurality of bound paper sheets, when binding is performed or when the paper feed hole 7 is punched. The generated paper dust may remain as it is. In addition, the cut piece 17 and the paper feed hole 7
Since burrs generated at the time of making a cut or perforating the paper feed hole 7 may remain as they are, the burrs are formed by the paper feed mechanism 5 having the configuration described above.
Due to the external force received from the paper feed mechanism 5 or the contact when the feed pin 11 fits into the paper feed hole 7
It is peeled from the cut piece 17 or the paper feed hole 7 and is generated as paper dust in a state where it is separated from the front and back surfaces of the bound paper or between a plurality of paper sheets.

[0006] When passing through the paper feed mechanism 5, a part of these paper dusts present on the front and back surfaces of the bound paper or between a plurality of paper sheets are partially affected by external force or vibration received from the paper feed mechanism 5 or by the mechanical unit. , But a part remains on the front and back surfaces of the bound paper or between a plurality of paper sheets, and advances from the paper feeding mechanism 5 on the feeding path ahead.

However, the remaining paper dust is then scattered by vibration or the like caused by the paper feeding operation, and when the scattered paper dust reaches the vicinity of the print head 3, the printing quality is reduced and the printing operation is hindered. Sometimes. That is, there is a possibility that the paper dust adheres to the printed portion and deteriorates the print quality. Further, when the paper dust travels through a print wire (not shown) at the tip of the print head 3 and enters the inside of the head, preventing the print wire from moving into and out of the ink ribbon, and further causing damage to the print wire. There is. Further, paper dust may adhere to the carriage shaft 4 to hinder the reciprocating operation of the carriage or cause the carriage to lose synchronism.

Therefore, in order to prevent the occurrence of printing trouble due to such paper dust, a paper dust removing device for removing paper dust is generally used. As an example of this type of conventional paper dust removing apparatus, there is a paper dust removing means described in Japanese Patent Application Laid-Open No. 5-155103. This paper dust removing means arranges a vacuum plate composed of two plates having brushes and suction holes in front of a printing process section on a paper transport path so as to sandwich the transport path between the two plates. When the paper passes between the two plates, the paper dust attached to the paper is swept out by the brush,
It is configured to suck from the suction hole. Thus, before the printing paper is conveyed to the printing process unit, the printing paper has a brush and a suction hole in the vacuum plate.
The paper dust that is sandwiched between the sheets and is present on the front and back surfaces of the printing paper is swept out by the brush and is removed by suction from the suction holes, so that various printing troubles due to the paper dust can be prevented.

[0009]

As described above, in the conventional paper dust removing apparatus, the paper dust existing on the front and back surfaces of the printing paper is scraped by a contact means using a brush or the like, or a suction device or the like is used. The removal is performed by suction or the like by the non-contact means. However, in the bound paper in which a plurality of paper sheets are bound, as described above, paper dust is present in a separated state not only between the front and back surfaces of the paper but also between the plurality of paper sheets. Therefore, although the paper dust existing on the front and back surfaces of the printing paper can be removed by the conventional paper dust removing device, the paper dust existing between the plurality of papers of the binding paper obtained by binding the plurality of papers can be effectively removed. It could not be removed. For this reason, even after passing through the paper dust removing device, the paper dust that still remains between a plurality of paper sheets is scattered to a printing mechanism having a print head due to vibration or the like due to a paper feeding operation, thereby causing the above-described printing failure. Was.

[0010] An object of the present invention is to provide a paper dust removing apparatus for effectively removing paper dust present on a binding sheet in which a plurality of sheets are bound, thereby more reliably preventing the occurrence of printing trouble due to the paper dust. Is to prevent it.

[0011]

According to a first aspect of the present invention, a paper feed hole is provided at both sides extending along the feeding direction with a predetermined interval in the feeding direction. What is claimed is: 1. A paper dust removing device for removing paper dust present on a binding sheet, wherein a binding cut piece portion of a plurality of sheets is appropriately formed between the sheet feeding holes. A suction unit that sucks and removes the powder, the suction unit has two or more suction ports, and the suction ports are respectively disposed on both sides extending along a feeding direction of the binding paper; It is characterized by being arranged toward the side.

According to the present invention, the suction means has two or more suction ports, and the suction ports are respectively disposed on both sides extending along the feeding direction of the binding paper, and are provided on the side of the binding paper. Since the paper sheets are arranged so as to face each other, not only the paper dust present on the front and back surfaces of the binding paper but also the paper dust existing between a plurality of paper sheets is sucked and removed from the side surface of the binding paper.

Therefore, the paper dust existing on the bound paper is effectively removed, the paper dust is not scattered on the transport path, and the above-described various printing troubles can be reliably prevented. That is, it is possible to prevent a decrease in print quality due to paper dust adhesion. In addition, it reliably prevents paper dust from traveling along the print wire at the tip of the print head and entering the inside of the head, preventing the print wire from moving in and out of the ink ribbon, and preventing the print wire from being damaged. it can. Further, it is possible to reliably prevent the paper dust from adhering to the carriage shaft, thereby preventing the reciprocating operation of the carriage and causing the carriage to lose synchronism.

According to a second aspect of the present invention, in the apparatus for removing paper dust of a bound sheet according to the first aspect, the suction port is fitted in the paper feed hole and bound in a feeding direction. It is characterized in that the paper feed hole and a fitting portion of the paper feed pin in the paper feed mechanism portion having paper feed pins for feeding paper are disposed immediately after the paper feeding direction.

As described above, the paper dust generated from the binding paper may be present from the initial stage of binding of the binding paper, or may be newly generated when passing through the paper feeding mechanism. Therefore, it is desirable to remove paper dust immediately after the occurrence from the viewpoint of preventing scattering of paper dust.

According to the present invention, the paper feeding hole and the paper feeding pin in the paper feeding mechanism having the paper feeding pin for fitting the paper feeding hole and feeding the bound paper in the paper feeding direction are provided. The suction means for sucking the paper dust immediately after the feeding direction of the fitting portion of (1) allows the paper dust newly generated by the paper feed mechanism to be immediately removed, and the invention according to claim 1 The same operation and effect as described above can be obtained more reliably.

According to a third aspect of the present invention, there is provided the paper dust removing device for a bound sheet according to the first or second aspect, wherein the suction unit contacts the front and rear surfaces of the bound sheet before the feeding direction. And a contact medium for scraping the paper powder.

According to the present invention, between the paper feeding hole and the fitting portion of the feeding pin and the suction means, paper dust removing means is further brought into contact with the front and back surfaces of the bound paper to remove paper dust. Since the contact medium is provided for scraping, paper powder that cannot be removed only by the suction means can be reliably scraped and removed by the contact means on at least the front and back surfaces of the bound paper. In this case, in particular, the burrs remaining on the cut pieces on the front and back surfaces of the binding paper are scraped off by the contact medium to forcibly make the paper powder, or when the contact medium scrapes the paper powder on the front and back faces of the binding paper, the binding is performed. The burrs existing between the sheets are forcibly turned into paper powder by the squeezing (external force) applied to the laminated paper, and the suction is provided by the suction means provided immediately after the contact means. Burrs that are not removed can be effectively removed, and higher-quality printing results can be obtained in the subsequent printing process.

According to a fourth aspect of the present invention, in the apparatus for removing paper dust of a stapled sheet according to the third aspect, the contact medium is provided on a cover constituting the feeding mechanism. It is characterized by the following.

According to the present invention, since the contact medium is provided on the cover constituting the feeding mechanism, the same operation and effect as those of the invention described in claim 3 can be obtained. Since it is possible to reduce the number of parts when installing the medium, it is possible to install the contact medium inexpensively and easily.

According to a fifth aspect of the present invention, in the paper dust removing apparatus for stapled sheets according to any one of the first to fourth aspects, a storage means for storing the removed paper dust is provided. It is assumed that.

According to the present invention, since the paper dust removing device according to any one of claims 1 to 4 has a storage unit for storing the removed paper dust, for example, the suctioned paper Unlike the conventional paper dust removing apparatus that employs a configuration in which the dust is scattered and discharged to the outside, the paper dust is not scattered around the printer installation area.

According to a sixth aspect of the present invention, in the paper dust removing apparatus for binding sheets according to the fifth aspect, the storage means is detachable.

According to the present invention, since the storage means is detachable, the paper dust collected and deposited on the storage means can be quickly and easily discarded.

According to a seventh aspect of the present invention, in the apparatus for removing paper dust of a stapled sheet according to any one of the first to sixth aspects, paper dust is supplied to the suction port during a suction operation. It is characterized in that a dust collecting filter for retaining the paper powder near the inlet of the suction port and for dropping the paper powder downward from the suction port by its own weight during the non-suction operation is provided.

According to the present invention, since the dust filter is provided near the inlet of the suction port, the sucked paper dust adheres to the dust filter by the suction force during the suction operation, and is sucked during the non-suction operation. The paper dust adhering to the dust collecting filter is released from the suction force by the force, and falls down by its own weight. Accordingly, the dust collection filter is self-cleaned by stopping the suction operation, so that there is no need to perform a cleaning operation as needed, for example, as in a dust collection filter installed in a deep area of the suction device. Very convenient.

According to an eighth aspect of the present invention, in the paper dust removing apparatus for binding sheets according to the seventh aspect, the dust collecting filter is detachable.

According to the present invention, since the dust collecting filter is detachable, the self-cleaning of the dust collecting filter described above is incomplete, and even if the suction operation is stopped, the dust collecting filter remains on the dust collecting filter. When paper dust remains, the cleaning operation of the dust collection filter can be facilitated.

According to a ninth aspect of the present invention, there is provided a printer comprising a feeding mechanism for feeding a binding sheet and a printing section for printing on the fed binding sheet.
A printer comprising the paper dust removing device for binding paper according to any one of claims 1 to 8.

Since the printer according to the present invention is provided with the paper dust removing device for effectively removing the paper dust existing on the binding paper in which a plurality of paper sheets are bound, it is possible to reliably prevent the occurrence of printing trouble due to the paper dust. Can be prevented.

[0031]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing an embodiment of a printer provided with a paper dust removing device according to the present invention, and is a perspective view seen from the rear of the printer.

In FIG. 1, reference numeral 50 denotes a printer main body. The printer main body 50 generally includes a feeding mechanism section 51 for feeding the binding paper 6 and a printing section 52 for printing on the binding paper 6. In addition to this, the printer body 50 further contacts the front and back surfaces of the binding paper 6. Brush 6 to remove paper dust
The apparatus is provided with a paper dust removing device including suction means 60 for sucking the paper dust and a paper dust storage box 64 for storing the paper dust.

The brushes 63, 63 are provided on cover members 54, 54 constituting the feeding mechanism 51, and the brushes 6
The suction means 60 provided immediately after the feed direction from the suction ports 3 and 63 is provided with two suction ports 6 provided with dust collection filters 62 and 62.
1 and 61, and the suction ports 61 and 61 are arranged to face each other toward the side surface of the binding paper 6.

The binding paper 6 used for printing includes:
Paper feed holes 7 are provided at regular intervals in the feed direction at both sides extending along the feed direction, and a plurality of paper sheets are stapled between the paper feed holes 7 and adjacent paper feed holes as appropriate. Notch piece 17
Are formed. The paper dust generated from the binding paper 6 exists in a loose state between the front and back surfaces of the binding paper 6 or between a plurality of paper sheets, and the binding paper 6 passes through the brushes 63, 63 and the suction ports 61, 61. After passing through, the paper dust is removed by the paper dust removing device, and then fed to the printing unit 52.

Hereinafter, the binding paper 6 is fed to the feeding mechanism 51.
The operation and effect of each component on the feeding path from the printer to the printing unit 52 will be described with reference to FIGS.

First, FIG. 2 and FIG.
FIG. 2 is a detailed view of the vicinity, FIG. 2 is a view as viewed in the direction of arrow A in FIG. 1 (side view), and FIG. 3 is a plan view. Binding paper 6
Is fed by the rotation of the endless belt 12 constituting the tractor 53 as a feeding mechanism. At this time, since the feed pins 11 provided on the endless belt 12 are fitted into the paper feed holes 7 provided on the binding paper 6, the peripheral portion of the paper feed holes 7 receives an external force by the fitting operation. Further, the cover body 54 constituting the tractor 53 is formed so as to be rotatable with respect to the feeding base 14, and the binding paper 6 is lightly pressed against the feeding endless belt 12 at the time of feeding. As a result, both sides extending along the feeding direction of the binding paper 6 receive an external force as described above when passing through the tractor 53.

Here, the cut pieces 17 and the paper feed holes 7 provided on both sides of the binding paper 6 have burrs generated when the binding is performed or when the paper feed holes 7 are punched. The burrs are peeled from the cut piece 17 or the paper feeding hole 7 by the external force received from the feeding mechanism and the contact with the feeding mechanism. Generated as paper powder in the state of being separated into ash.

Next, immediately after the feeding direction of the fitting portion where the paper feeding hole 7 and the feeding pin 11 are fitted, a contact medium as a contact medium that comes into contact with the front and back surfaces of the binding paper 6 and scrapes the paper powder. Brush 63
Are provided on the cover body 54, and the brushes 63 are arranged vertically so as to sandwich the front and back surfaces of both sides extending along the feeding direction of the binding paper 6 on the cover body 54.

Accordingly, the paper dust existing on the front and back sides of both sides extending along the feeding direction of the binding paper 6 is removed by the brush 6.
3, the toner is reliably scraped off and falls into the paper powder storage box 64 installed below the brush 63. At the same time, the brush 63 scrapes off the burrs existing in the cut pieces 17 on the front and back surfaces of the binding paper 6 and forcibly forms the paper, or the brush 63 applies a force (external force) to the binding paper 6 by ironing. Since the burrs existing between the paper sheets are forcibly turned into paper powder, it is possible to prevent the generation of paper powder on the later feeding path.

Further, in this embodiment, the brush 63 as a contact medium for contacting the front and back surfaces of the binding paper 6 and scraping the paper dust is directly provided on the cover body 54. The number of parts can be reduced.

In this embodiment, the brush 63 as a contact means for scraping the paper dust is connected to the paper feeding hole 6 serving as a paper dust generating source.
The paper dust existing in the binding paper 6, especially for the paper dust generated in the above-mentioned fitting part, is quickly and immediately after the generation, since the paper is installed immediately after the feeding direction of the fitting part of the fitting pin 11 and the fitting pin 11. Since the paper dust can be removed, the paper dust does not scatter and reach the printing unit 52 due to the vibration or the like caused by the subsequent paper feeding operation, so that the above-described deterioration of the printing quality and the hindrance of the printing operation are not caused.

As a contact medium for scraping paper powder,
As long as the paper dust can be scraped off by contacting the binding paper 6, not limited to the brush, the material, shape, installation method, etc. may be any.

Next, a suction means 60 is provided immediately after the feeding direction of the brush 63 as a contact medium for scraping the paper dust. 4 and 5 are detailed drawings showing the structure of the suction means 60. FIG. 4 is a view as seen from the arrow B in FIG. 3, and FIG. 5 is a plan view. 4 and FIG.
Is a suction port constituting suction means 60 for sucking and removing paper dust. The suction ports 61, 61 are respectively disposed on both sides extending along the paper feeding direction of the binding paper 6, and Are positioned so as to face each other, and are positioned in the height direction such that the side surface of the binding paper 6 is located near the center of the suction ports 61, 61. The suction ports 61, 61 are provided with dust filters 62, 62 that are sufficiently dense so that paper dust does not enter the suction ports near the entrances.
1 is detachably installed. In addition, the two suction ports 61, 61 do not necessarily have to completely coincide with each other at the opposing positions, and may be arranged in a state where the positions are shifted along the feeding direction, and the number of suction ports is two or more. May be any number.

The suction means 60 is configured to generate a suction force by a suction fan (not shown) or the like for performing suction, and to switch on and off the suction operation arbitrarily. Therefore, it is also possible to adopt a configuration synchronized with the feeding operation such that the suction operation is turned on when the binding paper 6 is fed, and the suction operation is turned off when the feeding operation is stopped. .

Next, the operation and effect of the suction means will be described. The brush 6 as a contact medium for scraping paper powder
In the binding paper 6 from which the paper dust present on the front and back surfaces has been removed by the paper 3, the paper dust which has not been completely removed by the brush 63 on the front and back surfaces, and the brush 63 As described above, the paper powder which is not removed exists in a state where it can be easily scattered by an external action such as vibration or air blow, and scatters arbitrarily on the transport path of the binding paper 6. This is a factor that causes printing trouble.

When the suction operation is on, the suction port 6
The paper dust existing in the binding paper 6 passing in the feeding direction near the center of the paper dust 61 is attracted to the dust collecting filters 62 by the suction force. At this time, since the side surface of the binding paper 6 is located near the center of the suction ports 61, the paper powder present on the front and back surfaces of the binding paper 6 is not only sucked but also the binding paper 6 at the same time.
Is also adsorbed by the dust collecting filters 62 by the suction force.

Therefore, it is possible to effectively remove the paper dust existing on the binding paper 6, especially the paper dust existing between a plurality of paper sheets. The powder is not scattered and reaches the printing unit 52, thereby preventing the above-described deterioration in print quality and hindrance to the printing operation.

Further, in this embodiment, the paper dust suction means is provided immediately after the feeding portion of the paper feed hole 6 and the fitting pin 11 and the brush 63 in the paper feeding direction.
In particular, the paper dust generated in the feeding mechanism 51 can be suctioned and removed immediately after the generation, so that the paper dust can be more reliably removed.

Next, during the suction operation, the paper dust adsorbed by the dust collection filters 62, 62 continues to be adsorbed by the dust collection filters 62, 62 due to the suction force. Dust filter 6 released from power
2, 62, and then the suction port 6 by its own weight.
1 and 61 fall into the paper dust storage box 64. Therefore, the dust collection filters 62, 62 are automatically cleaned by turning off the suction operation, and there is no need to remove and clean the dust collection filter each time. Further, even if the dust collection filters 62, 62 are clogged by paper dust, the dust collection filters 62, 62 are not
Since it is installed detachably from 2, the dust collection filters 62, 62 can be removed and cleaned as needed.

The paper dust storage box 64 as paper dust storage means is
As described above, the paper dust collected by the brushes 63, 63 and the dust collection filters 62, 62 installed in the suction ports 61, 61 is stored, so that the paper installation area is not scattered around the printer installation area. Moreover, since the paper dust storage box 64 is detachable, the paper dust accumulated in the paper dust storage box 64 can be quickly and easily discarded.

The paper dust storage box 64 is made up of brushes 63, 63.
And installed below the dust collecting filters 62, 62,
In addition, as long as it can be attached to and detached from the paper dust removing device, its shape and installation location may be any.

[0052]

According to the present invention, not only the paper dust present on the binding paper but also the paper dust present between a plurality of paper sheets can be removed by suction. This allows
There is no scattering of paper dust on the transport path, and it is possible to reliably prevent various printing troubles from occurring. That is, it is possible to prevent the print quality from deteriorating due to the adhesion of the paper dust to the printed portion. In addition, the paper dust travels along the print wire at the tip of the print head, and the paper dust enters the head and hinders the movement of the print wire into and out of the ink ribbon, further damages the print wire, or causes the paper dust to move along the carriage shaft. To prevent the carriage from reciprocating or causing the carriage to lose synchronism.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration of a printer including a paper dust removing device according to the present invention.

FIG. 2 is a side view of the paper dust removing device according to the present invention.

FIG. 3 is a plan view of the paper dust removing device according to the present invention.

FIG. 4 is a side view showing details of a suction port included in the paper dust removing device according to the present invention.

FIG. 5 is a plan view showing an arrangement of suction ports constituting the paper dust removing device according to the present invention.

FIG. 6 is a perspective view illustrating a configuration of a general printer.

FIG. 7 is a side view showing details of a feeding mechanism of a general printer.

FIGS. 8A and 8B show a binding sheet formed by binding a plurality of sheets, wherein FIG. 8A is a partial plan view and FIG. 8B is a partial cross-sectional view thereof.

[Explanation of symbols]

 6 binding paper 7 paper feed hole 17 cut piece 54 cover body 60 suction means 61 suction port 62 dust collection filter 63 brush 64 paper dust storage box

Claims (9)

[Claims] 1. A paper feed hole is provided at both sides extending in the paper feed direction at a constant interval in the paper feed direction, and a plurality of paper sheets are bound between the paper feed holes. A paper dust removing device for removing paper dust present on a binding sheet having a cut piece portion formed as appropriate, comprising suction means for sucking and removing paper dust, wherein the suction means has two or more suction ports. And a paper dust removing device for binding paper, wherein the suction ports are respectively disposed on both sides extending along the feeding direction of the binding paper, and are disposed toward a side surface of the binding paper. . 2. The paper feeding mechanism according to claim 1, wherein the suction port is fitted with the paper feeding hole and has a feeding pin for feeding the bound paper in a feeding direction. A paper dust removing device for stapled paper, wherein the paper dust removing device is disposed immediately after a feeding direction of a hole and a fitting portion of the feeding pin. 3. The binding device according to claim 1, further comprising a contact medium that comes into contact with the front and back surfaces of the binding paper to scrape off paper dust, in front of the suction unit in the feeding direction. Paper dust removal device for laminated paper. 4. The paper dust removing device for binding paper according to claim 3, wherein the contact medium is provided on a cover part constituting the feeding mechanism part. 5. The storage device according to claim 1, further comprising storage means for storing the removed paper dust.
A paper dust removing device for binding paper. 6. The paper dust removing device for binding sheets according to claim 5, wherein the storage unit is detachable. 7. The suction port according to claim 1, wherein paper powder stays in the suction port near the inlet of the suction port during a suction operation, and paper powder flows by its own weight during a non-suction operation. A paper dust removing device for binding paper, comprising a dust filter for dropping the paper from below. 8. An apparatus according to claim 7, wherein said dust collecting filter is detachable. 9. The printer according to claim 1, further comprising a feeding mechanism that feeds the binding sheets, and a printing section that prints on the fed binding sheets. A printer comprising a paper dust removing device for stapled sheets.