JPH082699A - Paper feeding device - Google Patents

Abstract

PURPOSE:To provide a paper sheet feeding device which can arbitrarily accommodate either the A4 size or the North American size at low cost, by selectively setting two kinds of recording paper sheets, by reversing the installation direction of a recording paper sheet accommodation case. CONSTITUTION:An accommodation case 20 has a North American size accommodation part 20a having the width dimension La for the accommodation of a cut paper sheet having a North American size (letter size) on one side surface and has an A4 size accommodation part 20b having the width dimension Lb for the accommodation of the cut paper sheet having the A4 size is formed on the other surface. Further, a bottom plate 22 having the stepped projections 22a and 22b for the installation in a turnable manner with the accommodation case 20 is provided. When the bottom plate 22 is installed in the North American size accommodation part 20a, the top end parts of the stepped projection parts 22a and 22b are engaged with an installation hole 20c, while if the bottom plate 22 is installed with the A4 size accommodation part 20b, the base parts of the stepped projections 22a and 22b are engaged with an installation hole 20d.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention stacks a large number of cut recording papers and separates them one by one from the uppermost one.
The present invention relates to a paper feeding device that feeds a recording unit.

[0002]

2. Description of the Related Art Generally, in an image recording apparatus or a printer which uses a standard size cut sheet as a recording sheet, a sheet feeding apparatus for accommodating a large number of recording sheets and separating them one by one from the uppermost one is attached. Has been done.

In such a paper feeding device, in order to stably feed the cut paper, the paper feed table on which the cut paper is placed is provided with a position regulating means in the width direction, One type of cut paper having a width dimension regulated by the position regulation means is placed on the paper feed table.

Here, the paper size used as the recording paper is, for example, A4 size is common in Japan and Europe, but so-called North America size (letter, legal) is common in North America. A4 size recording width is 210
(Mm), the recording width of the North American size is 216 (mm). Therefore, it is not possible to apply the paper feed table provided with the same position regulation means to these different sizes.

Therefore, it is necessary to change the structure of the position control means of the paper feed tray between the product for North America and the product for Japan and Europe.

In order to change the configuration of the position regulating means of the paper feed tray, two different paper feed trays are manufactured or the position regulation in which the width dimension regulation position can be changed in two steps of A4 size and North American size. The means may be assembled to the paper feed table, and the regulation position may be changed according to the product before shipment.

[0007]

However, in such a conventional apparatus, even when two types of paper feed trays are manufactured,
Even when the position regulation means capable of changing the regulation position of the width dimension in two stages is assembled to the paper feed tray, the manufacturing cost of the paper feed tray is high in any case, which is an obstacle to reducing the apparatus cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sheet feeding device capable of reducing the device cost.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a large number of cut recording papers are stacked, separated one by one from the uppermost one, and fed to a recording unit to accumulate the recording papers. A first wall member capable of accommodating the recording paper having the first width dimension is provided on the first surface of the recording paper accommodation case, and the second wall of the second width dimension is provided on the second surface of the recording paper accommodation case. By providing the second wall member capable of accommodating the recording paper and reversing the mounting mode of the recording paper accommodating case, the recording paper having the first width dimension or the recording paper having the second width dimension is selectively selected. The paper can be fed to.

Further, in a paper feeding device for stacking a large number of cut recording papers, separating the uppermost one by one, and sending it to the recording unit, a recording paper storage case for accumulating the recording papers, A first width restricting member that is mounted on the recording paper storage case and is formed on the first surface of the bottom plate on which the recording paper is placed, and restricts the recording paper to the first width dimension; and on the second surface of the bottom plate. A recording sheet having the first width dimension is provided by inverting the mode in which the second width regulating member that is formed and regulates the recording sheet to the second width dimension is provided, and the bottom plate is mounted in the recording sheet accommodation case. Alternatively, the recording paper having the second width dimension can be selectively fed.

Further, in a paper feeding device for stacking a large number of cut recording papers, separating them one by one from the topmost one, and sending them to the recording unit, a recording paper storage case for accumulating the recording papers, It is provided at the end of the bottom plate that is mounted in the recording paper storage case and on which the recording paper is placed, on the recording paper receiving side, and when the bottom plate is not in the recording paper set state, it interferes with the recording paper receiving portion. The shutter means is provided.

Further, in a paper feeding device for stacking a large number of cut recording papers, separating the uppermost paper one by one, and sending it to the recording unit, the first recording paper accommodating case for accumulating the recording papers. A first wall member that is provided on a surface and can accommodate a recording paper having a first width dimension; and a first wall member that is provided on a second surface of the recording paper accommodation case and that can accommodate a recording paper having a second width dimension. The second wall member and the bottom plate mounted on the recording paper storage case and on which the recording paper is placed are provided at the end portions on the recording paper receiving side. When the bottom plate is not in the recording paper set state, recording is performed. A shutter means for obstructing the paper receiving portion is provided, and the recording paper of the first width dimension or the recording paper of the second width dimension is selectively supplied by reversing the mounting mode of the recording paper storage case. It is made possible by paper.

Further, in a paper feeding device for stacking a large number of cut recording papers, separating the uppermost paper one by one, and sending it to the recording unit, a recording paper storage case for accumulating the recording papers, A first width restricting member that is mounted on the recording paper storage case and is formed on the first surface of the bottom plate on which the recording paper is placed, and restricts the recording paper to the first width dimension; and on the second surface of the bottom plate. A second width regulating member that is formed and regulates the recording paper to the second width dimension, and is provided at the end of the bottom plate on the recording paper receiving side, and when the bottom plate is not in the recording paper set state, The recording sheet having the first width dimension or the second width dimension is provided by reversing the mode of mounting the bottom plate in the recording sheet accommodation case, which is provided with the shutter means for obstructing the receiving portion of the recording sheet. Is a sheet that can be selectively fed.

[0014]

Therefore, by reversing the mounting direction of the recording accommodating case, it is possible to selectively set the two kinds of recording papers. Therefore, for example, a paper feed capable of accommodating either A4 size or North American size. The device can be constructed inexpensively.

By reversing the mounting direction of the bottom plate,
Since two types of recording paper can be selectively set, for example, it is possible to inexpensively configure a paper feeding device capable of accommodating either A4 size or North American size.

Further, when the bottom plate is not in the recording paper set state, the shutter means is provided to obstruct the receiving portion of the recording paper. Therefore, for example, the user forcibly replenishes the recording paper and the leading end of the recording paper. It is possible to avoid such a situation as to hurt the person.

[0017]

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

FIG. 1 shows a main part of a facsimile apparatus according to an embodiment of the present invention.

In the figure, a scanner unit 2 for reading and inputting an original image is provided on an upper part of a main body casing 1 of the facsimile apparatus, and an image is recorded on a cut sheet PP below the scanner unit 2. A printer unit 3 for outputting is provided, and a paper feeding unit 4 for separating the cut sheets PP sheet by sheet and supplying the cut sheets PP to the printer unit 3 is provided on the upstream side of the printer unit 3 in the sheet conveying direction. Has been.

In the scanner unit 2, a plurality of read originals placed on the original table 6 are separated one by one by a friction pad 7 and a separation roller 8, and are separated by an original scanning unit composed of a normal-size scanner 9 and a platen roller 10. Sent out.

The read original sent to the original reading unit is scanned by the pair of conveying rollers 11 on the upstream side in the conveying direction, and the normal-size scanner 9 is provided.
The image is read in line units by the same-magnification scanner 9 while being conveyed by being sandwiched between the same-magnification scanner 9 and the platen roller 10. The read document that has finished image reading is discharged to the paper discharge tray 13 by the pair of conveying rollers 12.

In the printer unit 3, the cut sheet PP fed from the paper feeding unit 4 is conveyed to the recording position of the recording head unit 16 by the conveying roller 15, and the recording head unit 16 records an image. The cut sheet PP on which the image recording is completed is discharged to the discharge tray 18 by the discharge roller pair 17.

In the paper feeding unit 4, the housing case 20 for housing the cut paper PP is fixed to the main body housing 1, and the housing case 20 has a bottom plate 22 biased upward by a spring 21. , Is rotatably arranged. Further, a corner claw member 23 for separating the cut sheets PP one by one is provided at the upper end portion on the front end side of the storage case 20.
Is provided.

The paper feed roller 24 is for carrying the cut paper PP, and the output of the motor 25 is transmitted to the paper feed roller 24 via the transmission mechanism 26.
The paper feed roller 24 rotates as the motor 25 rotates.

The lever 27 is for pushing down the bottom plate 22 with its end portion 27a when replenishing the cut paper PP to the paper feeding unit 4 or when performing work for clearing a paper jam, and the end portion 27a. End 27b opposite to
Is provided with a handle 28 for operation.

The lever 27 is rotatably supported by a shaft 29, and is located slightly closer to the end 27b than the shaft 29.
One end of the tension spring 30 is locked. Also, the tension spring 30 is
The other end is locked to the main body housing 1 in a state of being extended in the direction of the end portion 27a.

Therefore, when the lever 27 is operated in the manner shown by the solid line in the figure to push down the bottom plate 22, the state is maintained by the urging force of the tension spring 30. Further, when the lever 27 is operated in the manner shown by the chain double-dashed line in the figure to release the pushing down of the bottom plate 22, the tension spring 30
The state is maintained by the urging force of.

2 and 3 show examples of the housing case 20 and the bottom plate 22.

The accommodating case 20 has a North American size accommodating portion 20a having a width La capable of accommodating North American size (letter size) cut sheets on one surface thereof, and an A4 size on the other surface. A4 size accommodating portion 20b having a width dimension Lb capable of accommodating the cut sheet is formed.

The North American size accommodating section 20a, and
The A4 size accommodating portion 20b is provided with mounting holes 20c and 20d for mounting the bottom plate 22, respectively.
Here, the diameter of the mounting hole 20c is set to be smaller than the diameter of the mounting hole 20d.

A corner claw member 23 is integrally provided at the leading end of the North American size accommodating section 20a on the sheet conveying side and the leading end of the A4 size accommodating section 20b on the sheet conveying side.

The bottom plate 22 is provided with stepped projections 22a and 22b for rotatably attaching to the housing case 20. The diameter dimensions of the tip end portions of the stepped projections 22a and 22b are set to values corresponding to the mounting holes 20c formed in the North American size accommodating portion 20a, and the diameters of the base portions of the stepped projections 22a and 22b. The size is set to a value corresponding to the mounting hole 20d formed in the A4 size accommodating portion 20b.

Here, the dimension from the step of the step projection 22a to the step of the step projection 22b is set to a value smaller than the size of the regulation width of the North American size accommodating portion 20a, and The dimension from the tip of the protrusion 22a to the tip of the stepped protrusion 22b is the North American size accommodating portion 20a.
Is set to a value that allows sufficient engagement. Also, the bottom plate 2
The size of the cut sheet 2 in the width direction is the A4 size storage portion 20b.
It is set to a value that is slightly smaller than the size of the regulation width of.

Thus, when the bottom plate 22 is attached to the North American size accommodating portion 20a, the tip ends of the step projections 22a and 22b engage with the attachment holes 20c, and the bottom plate 22 is A4 size.
When attached to the size accommodating portion 20b, the stepped protrusion 22
The base portions of a and 22b engage with the mounting hole 20d. Therefore, the same bottom plate 22 is attached to the North American size accommodation unit 20a and A4 size.
It can be used together with the size accommodating portion 20b.

Therefore, in this embodiment, when the North American cut paper is used as the recording paper, the storage case 2 is used.
The spring 3 and the bottom plate 22 are attached to the North American size accommodating section 20a of No. 0, and the North American size accommodating section 20a is attached to the sheet feeding unit 4 in the manner of being on the upper side.
When a 4 size cut sheet is used as a recording sheet, the spring 3 is attached to the A4 size containing portion 20b of the containing case 20.
Then, the bottom plate 22 is attached, and the A4 size accommodating portion 20b is attached to the sheet feeding unit 4 with the upper side.

In this way, in the present embodiment, two types of cut sheets of North American size cut sheet and A4 size cut sheet can be used properly by using the same housing case 20 and bottom plate 22, so that the apparatus cost can be reduced. Can be significantly reduced.

4 and 5 show a housing case 20 'and a bottom plate 22' according to another embodiment of the present invention.

The bottom plate 22 'has, on one surface thereof, a width dimension La capable of accommodating a North American size (letter size) cut sheet.
The wall members 22a 'and 22b' having the width are formed, and the wall members 22c 'and 22d' having the width dimension Lb capable of accommodating the A4 size cut sheet are formed on the other surface. Further, the bottom plate 22 'is provided with projections 22e', 22f 'for rotatably attaching to the housing case 20'.

The accommodating case 20 'is set to have a width dimension capable of accommodating the wall members 22a', 22b 'of the bottom plate 22', and the wall members 22a ', 22b', 22c ', 2
Holes 20a ', 20b' (20
b'is not visible) is formed.

Further, mounting portions 20c ', 20d' for mounting the corner claw members 23a, 23b are formed at the front end of the accommodating case 20 'in the cut sheet conveying direction. The mounting portions 20c ', 20d' are provided with three engagement holes so that the corner claw members 23a, 23b can be moved to a mounting position corresponding to the North American size and a mounting position corresponding to the A4 size.

Two engaging projections are formed on the corner claw members 23a, 23b, and the corner claw members 23a, 23b
When attaching 23b to the attachment position corresponding to the size of North America, the two engaging protrusions are attached to the attachment portions 20c ', 20.
When the corner claw members 23a, 23b are mounted at the mounting positions corresponding to the A4 size while being fitted and positioned in the two engaging holes on the outer side of d ', the two engaging projections are provided by the mounting portions 20c', 20d '. The two engaging holes on the inside of are fitted and positioned.

Further, the housing case 20 'has a bottom plate 22'.
Mounting holes 20e 'and 20f' for mounting the housing are formed, and projections 22e ', 22f' for mounting to the housing case 20 'are formed on the bottom plate 22'.

Therefore, in the present embodiment, when the North American cut paper is used as the recording paper, the bottom plate 22 'is configured such that the wall members 22a' and 22b 'of the bottom plate 22' are on the upper side.
2'is attached to the housing case 20 ', the spring 3 is arranged between the bottom plate 22' and the housing case 20 ', and
The corner claw members 2a and 23b are attached to the attachment positions corresponding to the North American size.

When A4 size cut sheets are used as recording sheets, the wall members 22c ', 22 of the bottom plate 22' are also used.
With the d'upside, the bottom plate 22 'is placed in the housing case 2
0 ', the spring 3 is arranged between the bottom plate 22' and the housing case 20 ', and the corner claw member 2
Attach a and 23b to the attachment position corresponding to A4 size.

In this way, in the present embodiment, two types of cut sheets, North American size cut sheets and A4 size cut sheets, can be used separately by using the same storage case 20 'and bottom plate 22'. The device cost can be significantly reduced.

6 and 7 show the essential parts of a facsimile apparatus according to another embodiment of the present invention. In the figure, the same parts as those in FIG. 1 and corresponding parts are designated by the same reference numerals.

In the drawing, a cut sheet P is attached to the bottom plate 22 ".
A baffle plate member 35 is integrally attached to the end portion on the P receiving side. The baffle member 35 includes a bottom plate 2
An opening portion 35a is formed so that the cut sheet PP can pass through in a state in which the 2 "is positioned in a manner of supplying the cut sheet PP.

The housing case 20 "has a bottom plate 22".
Mounting holes 20a "and 20b" for mounting the mounting case 20 "are formed, and the bottom plate 22" is formed with projections 22a ", 22b" for mounting on the housing case 20 ".

Therefore, when the bottom plate 22 "is positioned in the manner shown by the solid line in FIG. 6, the baffle plate member 35 is
Since the opening of the sheet feeding unit 4 on the side where the cut sheet PP is received is closed, the cut sheet PP cannot be supplied.

Further, in the state where the bottom plate 22 "is positioned in the manner indicated by the chain double-dashed line in the figure, the opening portion 35a of the baffle plate member 35 is located at the opening portion on the receiving side of the cut sheet PP of the sheet feeding unit 4. Since they match, the cut paper PP can be supplied through the opening 35a.

In this way, in this embodiment, the bottom plate 2
When 2 ″ is not in a position where the cut sheet PP can be set, the cut sheet PP cannot be replenished to the paper feeding unit 4. Therefore, for example, the user forcibly replenishes the cut sheet PP to cut the cut sheet PP. It is possible to avoid a situation where the tip of the PP is damaged.

Moreover, since the insertion direction of the cut sheet PP is guided by the opening 35a of the baffle plate member 35, the supply direction of the cut sheet PP can be stabilized.

In the above-described embodiment, the baffle plate member 35 is connected to the bottom plate 22 ", but the opening of the sheet feeding unit 4 on the receiving side of the cut sheet PP is interlocked with the displacement of the bottom plate 22". If it can be closed / opened, the baffle member 35
The mounting mode of is not limited to this.

By the way, the present invention can be similarly applied to a sheet feeding device other than the configuration of the above-described embodiment. Further, the present invention can be similarly applied to a device other than the facsimile device, for example, a printer device.

[0055]

As described above, according to the present invention,
By reversing the mounting direction of the recording accommodating case, it is possible to selectively set two types of recording paper.
It is possible to obtain an effect that it is possible to inexpensively configure a paper feeding device capable of accommodating either a size or a North American size.

By reversing the mounting direction of the bottom plate,
Since two types of recording papers can be selectively set, for example, it is possible to inexpensively configure a paper feeding device that can accommodate either A4 size or North American size.

Further, when the bottom plate is not in the state where the recording paper is set, the shutter means is provided so as to obstruct the receiving portion of the recording paper. For example, the user forcibly replenishes the recording paper, and the leading end of the recording paper. There is also an effect that it is possible to avoid such a situation as to hurt the person.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a main part of a configuration of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an example of a housing case and a bottom plate according to an embodiment of the present invention.

FIG. 3 is a schematic sectional view showing a section of the bottom plate of FIG.

FIG. 4 is an exploded perspective view showing an example of a housing case and a bottom plate according to another embodiment of the present invention.

FIG. 5 is a side view showing the bottom plate of FIG.

FIG. 6 is a schematic configuration diagram showing a main part of a configuration of a facsimile apparatus according to still another embodiment of the present invention.

FIG. 7 is an exploded perspective view showing an example of a housing case and a bottom plate according to still another embodiment of the present invention.

[Explanation of symbols]

 20, 20 ', 20 "Storage case 22, 22', 22" Bottom plate 35 Baffle plate member

Claims (5)

[Claims] 1. A sheet feeding device for stacking a large number of cut recording sheets, separating the uppermost sheets one by one, and sending the sheets to a recording unit. First on the surface
A first wall member capable of accommodating the recording paper having the width dimension is provided, and a second wall member capable of accommodating the recording paper having the second width dimension is provided on the second surface of the recording paper accommodating case. By reversing the mounting mode of the recording paper storage case, the recording paper having the first width dimension or the recording paper having the second width dimension can be selectively fed. . 2. A recording paper accommodating case for accumulating recording paper in a paper feeding device for stacking a large number of cut recording papers, separating one from the topmost one, and sending it to the recording unit, A first width regulating member that is mounted on the recording paper storage case and is formed on the first surface of the bottom plate on which the recording paper is placed, and that regulates the recording paper to the first width dimension; and on the second surface of the bottom plate. A recording sheet having the first width dimension is provided by including a second width regulating member that is formed and regulates the recording sheet in the second width dimension, and reverses the aspect of mounting the bottom plate in the recording sheet accommodation case. Or the second above
A paper feeding device characterized in that the recording paper having the width dimension can be selectively fed. 3. A recording paper accommodating case for accumulating recording paper in a paper feeding device for stacking a large number of cut recording papers, separating one from the topmost one, and sending it to the recording unit, It is provided at the end of the bottom plate that is mounted in the recording paper storage case and on which the recording paper is placed, on the recording paper receiving side, and when the bottom plate is not in the recording paper set state, it interferes with the recording paper receiving portion. A sheet feeding device comprising a shutter means. 4. A recording paper accommodating case for accumulating recording paper in a paper feeding device for stacking a large number of cut recording papers, separating one from the uppermost one, and feeding it to the recording unit. A first wall member provided on the surface and capable of accommodating the recording paper having the first width dimension; and a first wall member provided on the second surface of the recording paper accommodating case and capable of accommodating the recording paper having the second width dimension. The second wall member and the bottom plate mounted on the recording paper storage case and on which the recording paper is placed are provided at the end on the recording paper receiving side. When the bottom plate is not in the recording paper set state, recording is performed. A shutter means for obstructing the paper receiving portion is provided, and by reversing the mounting mode of the recording paper storage case, the recording paper of the first width dimension or the recording paper of the second width dimension is selectively supplied. A paper feeder that is capable of paper. 5. A recording paper accommodating case for accumulating recording papers in a paper feeding device for stacking a large number of cut recording papers, separating the uppermost one from the top, and sending the recording papers to a recording unit; A first width regulating member that is mounted on the recording paper storage case and is formed on the first surface of the bottom plate on which the recording paper is placed, and that regulates the recording paper to the first width dimension; and on the second surface of the bottom plate. A second width regulating member that is formed to regulate the recording paper to the second width dimension, and is provided at an end of the bottom plate on the recording paper receiving side, and when the bottom plate is not in the recording paper set state, The recording paper having the first width dimension or the second width is provided by reversing the mode in which the bottom plate is attached to the recording paper storage case, which comprises shutter means for obstructing the receiving portion of the recording paper.
A paper feeding device characterized in that the recording paper having the width dimension can be selectively fed.