JPH1129227A - Paper feeder with paper width guide - Google Patents

Abstract

(57) [Problem] To provide a compact paper feeder that can reduce the cost with a small number of parts, improve the operability and reliability of the width guide, and increase the degree of freedom in equipment layout. SOLUTION: A stacking plate 1 on which recording paper 2 is stacked and whose other end is rotatable in the direction of a paper feed roller 4 around a rotation shaft 10 provided at one end, and a position in the width direction of the recording paper 2 are regulated. Pair of width guides 6a, 7a and a pair of integrated racks 6
b, 7b and a pinion 8 rotatably meshing with the racks 6b, 7b and enabling the left and right width guides 6a, 7a to move in an interlocking manner, are provided in the housing FL, and between the housing FL and the pinion 8. The pinion 8 is moved by the elastic load of the compression spring 3 provided.
Is pressed and slid in contact with the end face of the loading plate 1, and the loading plate 1 is urged in the direction of the paper feed roller 4 via the pinion 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding device provided with a paper width guide, and more particularly, to a paper feeding device such as a facsimile device, a printer device, and a copying device. The present invention relates to a sheet feeding device.

[0002]

2. Description of the Related Art A paper feed unit of a facsimile machine, a printer, a copying machine, etc., has a function of stacking a plurality of sheets of paper and regulating a position in a width direction of the sheet of paper, and a function of holding a plurality of sheets of paper one sheet. A function of separating the recording paper and feeding the recording paper to the image printing unit one by one is required.
For this purpose, the paper feeding unit is provided with a stacking plate capable of stacking a plurality of recording sheets, and the stacking plate is provided with a sheet feeding width guide for regulating the position of the stacking recording paper in the width direction. First biasing means for pressing the plate against the paper feed roller is also provided.

[0003] In addition to the above, in the conventional configuration, a second urging means for adjusting the movement of the sheet feeding width guide is provided. As an example of a conventional sheet feeding device having such a configuration, a sheet cassette described in Japanese Patent Application Laid-Open No. 7-251957 is disclosed.

FIG. 6 is a schematic side sectional view showing an example of the configuration of the above-described conventional paper feeding apparatus. FIG. 7 is an exploded perspective view of the paper feed guide shown in FIG. Hereinafter, the configuration and operation of the conventional paper feeder will be described with reference to both drawings.

[0005] As shown in FIG.
D100 includes a loading plate 101 on which the recording paper 2 can be loaded. On the loading plate 101, the width guide portion 106a and the rack 106b, or the width guide portions 107a and 107a are provided.
7b is a pair of width guides 1 provided integrally with each other.
06, 107 and a pair of these racks 106b, 107
b, and a second compression spring 109 (see FIG. 7) for pressing the pinion 108 against the lower end surface 101 b of the loading plate 101 is disposed substantially at the center of the loading plate 101. ing.

[0006] One end of the laminated plate 101 has a rotating shaft 110.
And the other end is rotatably arranged in the lower end direction of the paper feed roller 4. Further, a first compression spring 10 that presses the laminated plate 101 in the direction of the paper supplying roller 4 at the position 101a is provided at the end of the laminated plate 101 on the side of the paper supplying roller 4.
3 is provided between the housing bottom portion FL and the loading plate 101.

The first compression spring 103 presses the plurality of recording papers 2 on the stacking plate 101 against the paper feed roller 4. As a result, the recording paper 2 is separated one by one by the separation pad 5 pressed against the paper feed roller 4, and is conveyed to an image printing unit (not shown).

FIG. 7 is an exploded perspective view of the paper feed guide shown in FIG. The left and right width guides 106 and 107 are composed of recording paper width guide portions 106a and 107a and racks 106b and 1
07b are integrated, and each rack 106b, 1
07b is linked via a pinion 108. Pinion 1
Reference numeral 08 is attached to the loading plate 101 with a screw 110 via a second compression spring 109, and the second compression spring 109 applies a load to the rotation of the pinion 108 by its elastic load.

When the left and right width guides 106 and 107 are manually moved in the left and right direction, a pair of racks 106b and 107b
Move in opposite directions, at which time the pinion 108
Is engaged with the pair of racks 106b and 107b and rotates in one direction. Here, due to the action of the second compression spring 109, the upper end surface of the pinion 108 is moved to the lower end surface 101 of the loading plate 101.
Slides in contact with b. When the second compression spring 109 elastically presses the pinion 108 upward, the frictional resistance between the upper end surface 108a of the pinion 108 and the lower end surface 101b of the loading plate 101 increases, and the rotation of the pinion 108 is restricted.

When the rotation of the pinion 108 is restricted by the increase in frictional resistance, the movement of the width guides 106 and 107 is also restricted, so that the set width is maintained, and thus the position of the recording paper 2 in the width direction is maintained. You. Further, by pressing one end of the stacking plate 101 as described above, the stacked recording paper 2 is pressed against the lower end of the paper feed roller 4, and the conveyance of the recording paper to the paper feed roller is reliably performed. become. That is, a plurality of recording papers can be separated one by one and conveyed to an image printing unit (not shown).

As described above, as a configuration for applying the operation load of the conventional width guide integrated with the rack, a load is applied to the pinion by a compression spring or a leaf spring. Alternatively, a configuration is also known in which the width guide plate and the rack are formed as separate members, and an elastic shape portion that abuts on the main body side is provided integrally with the rack portion to apply a load to the operation of the width guide.

[0012]

However, in the conventional paper feeder having the above-described structure, two springs, the first compression spring and the second compression spring, are required. There was a disadvantage that the cost was high.

Further, when the position of the width guide is manually adjusted, the operating load of the conventional width guide is such that the same load is applied in the left-right direction, that is, in the direction of increasing or decreasing the width, due to the component structure. In addition, since this load is set to be large enough so that the width guide does not easily move during operation, the force applied when manually reducing the width is large, and thus the operation is not easy. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the prior art. The present invention has been made to reduce the number of parts, reduce costs, improve the operability and reliability of the width guide, and improve the equipment. It is an object of the present invention to provide a compact paper feeder with a higher degree of freedom in layout.

[0015]

According to a first aspect of the present invention, there is provided a sheet feeding apparatus for stacking recording sheets,
A stacking plate that is rotatable in the direction of a paper feed roller at the other end around a rotation shaft provided at one end, and a pair of width guides that are disposed on the stacking plate and regulate a position in the width direction of the recording paper; A pair of racks integrally formed with the width guide, and a pinion rotatably meshing with the rack and allowing the width guide to move in a left-right interlocking manner are provided in the housing, and the end face of the pinion is mounted on the housing. A sheet feeding device that slides on an end surface of a plate, wherein a compression spring is disposed between the housing and the pinion, and an end surface of the pinion is pressed against an end surface of the loading plate by an elastic load of the compression spring. And the loading plate is urged toward the paper feed roller via the pinion.

According to a second aspect of the present invention, in the paper feeder according to the first aspect, each of the end face of the pinion and the end face of the loading plate includes a plurality of sawtooth-shaped inclined surfaces that mesh with each other. An upper contact portion and a lower contact portion are provided.

According to a third aspect of the present invention, in the configuration of the second aspect, each inclination angle of a pair of inclined surfaces forming each saw tooth of the upper contact portion and the lower contact portion is one. Is smaller than the other inclination angle,
And when moving the width guide in a direction to reduce the width,
The pinion is configured to rotate in a direction to climb the inclined surface having the small inclination angle.

According to a fourth aspect of the present invention, there is provided a sheet feeding device for stacking recording sheets, the other end of which is rotatable around a rotation shaft provided at one end in the direction of a sheet feeding roller; A pair of width guides disposed on a stacking plate for regulating the position of the recording paper in the width direction; a pair of racks integrally formed with the width guides; A load gear provided in the housing, the load gear slidingly contacting the end surface with the end surface of the loading plate, and the outer peripheral portion meshing with the pinion to be interlocked. A compression spring is disposed between the housing and the load gear, and an end face of the load gear is pressed against an end face of the loading plate by an elastic load of the compression spring, The loading plate is urged toward the paper feed roller via the load gear. Characterized by being configured to be.

According to a fifth aspect of the present invention, in the paper feeder according to the fourth aspect, each of the end face of the load gear and the end face of the loading plate includes a plurality of saw-toothed inclined surfaces that mesh with each other. The upper contact portion and the lower contact portion are provided respectively.

According to a sixth aspect of the present invention, in the configuration of the fifth aspect, each inclination angle of a pair of inclined surfaces forming each saw tooth of the upper contact portion and the lower contact portion is one. Is smaller than the other inclination angle,
And when moving the width guide in a direction to reduce the width,
The load gear is configured to rotate in a direction to climb the inclined surface having the small inclination angle through rotation by interlocking the pinion meshed with the load gear.

According to a seventh aspect of the present invention, there is provided a sheet feeding device for stacking recording sheets, the other end of which is rotatable around a rotation shaft provided at one end in the direction of a sheet feeding roller; A pair of width guides disposed on a stacking plate for regulating the position of the recording paper in the width direction; a pair of racks integrally formed with the width guides; A pinion and a pinion that is movable in the housing, wherein a peripheral portion of a flange of the pinion constitutes a gear, and a load gear slides the end face to the end face of the loading plate. The outer peripheral portion is meshed with a gear at the outer peripheral portion of the flange of the pinion, and is arranged so as to be interlocked therewith. A compression spring is arranged between the housing and the load gear, and the elasticity of the compression spring is The load causes the end face of the load gear to come into pressure contact with the end face of the loading plate. Together, wherein the stacking plate via the load gear is configured to be biased to the paper feed roller direction.

According to an eighth aspect of the present invention, in the paper feeder according to the seventh aspect, each of the end face of the load gear and the end face of the loading plate includes a plurality of sawtooth-shaped inclined surfaces meshing with each other. The upper contact portion and the lower contact portion are provided respectively.

According to a ninth aspect of the present invention, in the configuration of the eighth aspect, each inclination angle of a pair of inclined surfaces forming each saw tooth of the upper contact portion and the lower contact portion is one. Is smaller than the other inclination angle,
And when moving the width guide in a direction to reduce the width,
The load gear is configured to rotate in a direction climbing the inclined surface having the small inclination angle through rotation by interlocking the pinion in which the flange meshes with the load gear.

[0024]

Embodiments of the present invention will be described below. FIG. 1 is a schematic cross-sectional view showing a configuration of a first embodiment of a sheet feeding device according to the present invention. As shown in FIG. 1, a paper feeder WD1 according to the present invention includes a loading plate 1 on which a recording paper 2 is loaded in a housing FL, and a width direction of the recording paper 2 which is disposed on the loading plate 1. A pair of width guides 6 that regulate the position
a, 7a, a pair of racks 6b, 7b integrally formed with the width guides 6a, 7a, and a pinion for rotatably meshing with the racks 6b, 7b to move the pair of width guides 6a, 7a in a left-right manner. 8 are provided.

The loading plate 1 is configured to be rotatable about a rotation shaft 10 provided at one end thereof, so that the other end of the loading plate 2 is disposed so as to be able to press the loaded recording paper 2 against the paper feed roller 4. I have. Further, the upper end surface 8 b of the pinion 8 is configured to slide on the lower end surface 1 b of the loading plate 1.

When the width guides 6a, 7a are manually moved in the left-right direction, the pair of racks 6b, 7b respectively move in opposite directions, and at this time, the pinion 8 is moved to the pair of racks 6b,
7b and rotates in one of the clockwise and reverse directions. Here, the upper end surface 8 b of the pinion 8 slides in contact with the lower end surface 1 b of the loading plate 1.

Further, a compression spring 3 is arranged between the bottom of the housing FL and the lower end surface 8a of the pinion 8. The compression spring 3 pushes the pinion 8 upward by the elastic load, and brings the upper end surface 8 b of the pinion 8 into press contact with the lower end surface 1 b of the loading plate 1. In addition, the loading plate 1 is further urged in the direction V of the paper feed roller 4 via the pinion 8. A plurality of recording papers 2 on the loading plate 1 are pressed by a paper feed roller 4 by a compression spring 3 and fed to a separation unit.
The sheets are separated one by one by a separation pad 5 pressed to the image printing section (not shown).

As described above, when the compression spring 3 presses the pinion 8 upward by elasticity, the frictional resistance between the upper end surface 8b of the pinion 8 and the lower end surface 1b of the loading plate 1 increases, and the rotation of the pinion 8 is restricted. .

When the rotation of the pinion 8 is restricted by the increase in the frictional resistance, the movement of the width guides 6a and 7a is also restricted, so that the set width is maintained.
Position in the width direction is accurately maintained. Further, the other end of the stacking plate 1 is pressed toward the lower end of the paper feed roller 4, so that the recording paper 2 is reliably transported to the paper feed roller 4. That is, regardless of the width size of the recording paper 2, a plurality of recording papers 2 can be separated one by one and conveyed to an image printing unit (not shown).

As described above, according to the configuration of the present embodiment,
With only one provided compression spring, both the regulation of movement by applying a load to the operation of the width guide and the pressing of the other end of the stacking plate against the lower end of the recording paper feed roller can be realized at once. Will be possible. Therefore, it is possible to eliminate the second compression spring, which is a load component for the pinion operation, which is required in the conventional configuration, and it is possible to reduce the cost.

FIG. 2 is a schematic sectional view showing the configuration of a second embodiment of the paper feeder according to the present invention. The same parts as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. As shown in the drawing, the paper feeder WD2 of the present embodiment has an upper contact portion 11 including a plurality of saw-toothed inclined surfaces meshing with each other on an end surface of the pinion 8 and an end surface of the loading plate 1 and a lower surface. Side contact portions 12 are provided respectively.

As in the above-described embodiment, when the compression spring 3 presses the pinion 8 upward, the upper contact portion 11 and the lower contact portion 12 each having a saw-toothed inclined surface mesh with each other to rotate the pinion 8. Regulate more effectively.

FIG. 3 is an enlarged sectional view of the main part. Here, in particular, in each of the upper contact portion 11 and the lower contact portion 12, the angles α and β of the pair of inclined surfaces forming the sawtooth shape
Is provided in a relation of α <β, the rotational force (rotation load) of rotating in the a direction becomes smaller than that of the pinion 8 rotating in the b direction. Therefore, by setting the direction in which the width guides 6a and 7a are narrowed in the b direction and the direction in which the width guides are expanded in the a direction, when the width guide is adjusted to the paper size, the sawtooth-shaped inclined surface on the smaller angle side is climbed. Therefore, the operation load of the width guides 6a and 7a is reduced. On the other hand, when the skew of the recording paper conveyance is suppressed, the skewed slope on the side having a large angle is climbed, so that the operation load of the width guides 6a and 7a is increased, and the recording paper 2 is reliably moved in the width direction. Can be held.

Although the operating load of the conventional width guide is constant in the left and right directions (opening and closing directions) due to the component structure, in this embodiment, the user sets the recording paper in the paper feeding unit and performs recording. When the width guide is adjusted to the paper width (the width guide is in the closing direction), the operating load is reduced, and when the skew of recording paper conveyance is suppressed (the width guide is in the opening direction), the operating load is increased. Operability and reliability can be improved.

FIG. 4 is a schematic sectional view showing the structure of a third embodiment of the paper feeding apparatus according to the present invention. The same parts as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. As shown in the figure, the paper feeder WD3 of the present embodiment has a load gear 1
A rotation load is applied to the load gear 13 by the compression spring 3, and the upper end surface of the load gear 13 slides on the lower end surface 1 a of the loading plate 1, and the load gear 13 and the pinion 8 mesh with each other. It is configured to be.

With this configuration, a load generated on the load gear 13 due to friction or the like is applied as an operating load to the width guides 6a and 7a via the pinion 8 meshing with the load gear 13. Therefore, the pitch circle dimension A of the load gear 13
Thus, the positions of the width guides 6a and 7a can be arbitrarily determined. This makes it possible to cope with the case where the width guides 6a and 6b cannot be arranged on the axis of the compression spring 3 due to the layout of the device.

In the structure shown in FIG. 4, similarly to the case shown in FIG. 2, each of the end face of the load gear 13 and the end face of the loading plate 1 has an upper contact portion comprising a plurality of sawtooth-shaped inclined surfaces meshing with each other. It is also possible to adopt a configuration in which each of the lower contact portions is provided. The effect of this configuration is the same as described above.

In addition, it is also possible to provide a configuration in which the angles α and β of a pair of inclined surfaces forming a sawtooth shape are provided in a relation of α <β in each of the upper contact portion and the lower contact portion. The effect of this configuration is the same as described above.

FIG. 5 is a schematic sectional view showing the configuration of a fourth embodiment of the paper feeder according to the present invention. The same parts as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. As shown in the figure, in the paper feeding device WD4 of the present embodiment, the outer peripheral portion of the flange 14a of the pinion 14 forms a gear, the load gear 15 slides its end face to the end face of the loading plate 1, and An outer peripheral portion of the load gear 15 meshes with a gear on an outer peripheral portion of the flange 14 a of the pinion 14, and is arranged so as to be interlocked therewith.

Further, the compression spring 3 is disposed between the housing FL and the load gear 15, and the end face of the load gear 15 is pressed against the end face of the loading plate 1 by the elastic load of the compression spring 3. The stacking plate 1 is urged in the direction of the paper feed roller 4 via the line 15.

With this configuration, a load generated on the load gear 15 due to friction or the like is transmitted to the width guide 6 through the pinion 14 in which the load gear 15 and the flange 14a mesh.
a and 7a are given as operating loads. Also, by setting the pitch circle dimension B of the load gear 15 arbitrarily, the positions of the width guides 6a and 7a can be arranged at arbitrary positions.

In particular, by using a configuration in which, for example, a plurality of relatively small-diameter gears are connected as the load gear 15, the point of action 1a for pressing the loading plate 1 can be set arbitrarily. It becomes possible to arrange the width guide not only on the axis of the paper feed compression spring but also at any position, thereby increasing the degree of freedom in designing the apparatus.

In the configuration shown in FIG. 5, similarly to FIG. 2, the upper contact portion comprising a plurality of saw-toothed inclined surfaces meshing with each other is provided on each of the end surface of the load gear 15 and the end surface of the loading plate 1. It is also possible to adopt a configuration in which each of the lower contact portions is provided. The end face of the pinion 14 and the loading plate 1
It is also possible to provide an upper contact portion and a lower contact portion each comprising a plurality of sawtooth-shaped inclined surfaces which mesh with each other on each of the end surfaces. The effects of these configurations are the same as described above.

In addition, it is also possible to provide a configuration in which the angles α and β of a pair of inclined surfaces forming a sawtooth shape are provided in a relation of α <β in each of the upper contact portion and the lower contact portion. The effect of this configuration is the same as described above.

[0045]

As described in detail above, claim 1 of the present invention
The paper feed device according to the present invention has a configuration in which one compression spring applies a load to the pinion and presses the loading plate via the pinion, so that only one compression spring applies a load to the operation of the width guide. At the same time, it is possible to apply a pressing force to the loading plate, so that it is possible to eliminate the load components for the pinion operation, and it is possible to reduce the cost.

According to a second aspect of the present invention, in the paper feeder according to the first aspect, an upper contact portion comprising a plurality of saw-tooth-shaped inclined surfaces meshing with each other on each of the end surface of the pinion and the end surface of the loading plate. In addition, since the lower contact portions are provided, the rotation of the pinion can be more effectively restricted.

According to a third aspect of the present invention, in the paper feeder according to the second aspect, each of the inclination angles of a pair of inclined surfaces forming each saw tooth of the upper contact portion and the lower contact portion is set to one of the inclination angles. When the inclination angle is smaller than the other inclination angle and the width guide is moved in the direction to reduce the width, the pinion rotates in the direction to climb the inclined surface with the smaller inclination angle, so that the user When the paper is set in the paper feed unit and the width guide is adjusted to the width of the recording paper (width guide is closed), the operating load is reduced and the skew of recording paper transport is suppressed (width guide is opened). Makes it possible to increase the operation load, thereby improving operability and reliability.

In the paper feeder according to a fourth aspect of the present invention, one compression spring presses the load gear to generate a load, applies the load to the pinion meshed with the load gear, and transmits the load via the load gear. Since the loading plate is configured to press the loading plate, it is possible to apply a load to the operation of the width guide with only one compression spring and simultaneously apply a pressing force to the loading plate, thereby eliminating the number of parts. In addition to the effect that it becomes possible and cost reduction becomes possible,
It is possible to arbitrarily set the point of action of pressing the load plate by the load gear, thereby increasing the degree of freedom in device design.

According to a fifth aspect of the present invention, there is provided the paper feeder according to the fourth aspect, wherein each of the end face of the load gear and the end face of the loading plate has a plurality of saw-toothed inclined surfaces meshing with each other. Since the first and second contact portions and the lower contact portion are provided, the rotation of the load gear and the rotation of the pinion meshing with the load gear can be more effectively regulated.

According to a sixth aspect of the present invention, in the paper feeder according to the fifth aspect, each of the inclination angles of the pair of inclined surfaces forming each saw tooth of the upper contact portion and the lower contact portion is set to one of the inclination angles. Since the inclination angle is smaller than the other inclination angle, and when the width guide is moved in the direction to reduce the width, the load gear rotates in the direction to climb the inclined surface with the small inclination angle, When the user sets the recording paper in the paper feed unit and adjusts the width guide to the width of the recording paper (the width guide is in the closing direction), the operation load is reduced and the skew of the recording paper conveyance is suppressed (the width guide is in the opening direction). In this case, it is possible to increase the operation load, so that the operability and the reliability can be improved.

In the paper feeder according to a seventh aspect of the present invention, a single compression spring presses a load gear to generate a load, and applies this load to a pinion whose flange is meshed with the load gear. Since the loading plate is configured to be pressed via a gear, a load can be applied to the operation of the width guide with only one compression spring, and at the same time, a pressing force can be applied to the loading plate, thereby eliminating the number of parts. In addition to the effect that it is possible to reduce the cost, it is possible to arbitrarily set the point of action to press the loading plate by connecting a plurality of relatively small diameter gears as load gears Therefore, the degree of freedom in device design is increased.

According to an eighth aspect of the present invention, in the paper feeder according to the seventh aspect, an upper contact comprising a plurality of saw-toothed inclined surfaces meshing with each other on each of the end face of the load gear and the end face of the loading plate. Since it is constituted by providing the lower portion and the lower contact portion, the rotation of the load gear and the rotation of the pinion with which the flange meshes with the load gear can be more effectively regulated.

According to a ninth aspect of the present invention, in the configuration of the eighth aspect, each of the inclination angles of a pair of inclined surfaces forming each saw tooth of the upper contact portion and the lower contact portion is set to one of the inclination angles. Since the inclination angle is smaller than the other inclination angle, and when the width guide is moved in the direction to reduce the width, the load gear rotates in the direction to climb the inclined surface with the small inclination angle, When the user sets the recording paper in the paper feed unit and adjusts the width guide to the width of the recording paper (the width guide is in the closing direction), the operation load is reduced and the skew of the recording paper conveyance is suppressed (the width guide is in the opening direction). In this case, it is possible to increase the operation load, so that the operability and the reliability can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view illustrating a configuration of a first embodiment of a sheet feeding device according to the present invention.

FIG. 2 is a schematic cross-sectional view illustrating a configuration of a second embodiment of the sheet feeding device according to the present invention.

FIG. 3 is an enlarged sectional view of a main part shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view showing a configuration of a third embodiment of the paper feeding apparatus according to the present invention.

FIG. 5 is a schematic cross-sectional view illustrating a configuration of a fourth embodiment of the paper feeding apparatus according to the present invention.

FIG. 6 is a schematic cross-sectional view illustrating a configuration of a conventional sheet feeding device.

7 is an exploded perspective view of the paper feed guide shown in FIG.

[Explanation of symbols]

 WD1 Paper feeder according to the present invention 1 Stacking plate 1b Lower end surface 2 Recording paper 3 Compression spring 4 Paper feed roller 5 Separation pad 6a, 7a Width guide 6b, 7b Rack 8 Pinion 8a Pinion lower end surface 8b Pinion upper end surface 10 Rotating shaft FL Case V Rotation direction

Claims (9)

[Claims] A stacking plate on which recording paper is stacked, the other end of which is rotatable in the direction of a paper feed roller around a rotation shaft provided at one end; A pair of width guides for regulating the position in the width direction, a pair of racks integrally formed with the width guides, and a pinion rotatably meshing with the racks and allowing the width guides to move in the left and right direction. Wherein the end face of the pinion is in sliding contact with the end face of the loading plate, wherein a compression spring is disposed between the housing and the pinion;
The end face of the pinion comes into pressure contact with the end face of the loading plate due to the elastic load of the compression spring, and the loading plate is urged toward the paper feed roller via the pinion. Paper feeder. 2. An end surface of said pinion and an end surface of said loading plate, each of which is provided with an upper contact portion and a lower contact portion each comprising a plurality of sawtooth-shaped inclined surfaces meshing with each other. 2. The paper feeding device according to 1. 3. An inclination angle of a pair of inclined surfaces forming each sawtooth of the upper contact portion and the lower contact portion is such that one inclination angle is smaller than the other inclination angle, and the width guide is formed. 3. The sheet feeding device according to claim 2, wherein, when the pinion is moved in a direction to reduce the width, the pinion rotates in a direction to climb the inclined surface having the small inclination angle. 4. A loading plate on which recording paper is loaded, the other end of which is rotatable in the direction of a paper feed roller around a rotating shaft provided at one end, A housing includes a pair of width guides for regulating the width direction position, a pair of racks integrally formed with the width guides, and a pinion rotatably meshing with the racks and allowing the width guides to move in the left-right direction. Wherein the load gear is disposed so as to be able to interlock with the end surface of the load plate by slidingly contacting the end surface of the load plate, and the outer peripheral portion is meshed with the pinion, and the housing is provided with the load gear. A compression spring is disposed between the load gear and the load gear, and the end face of the load gear presses and contacts the end face of the load plate by the elastic load of the compression spring, and the load plate passes through the load gear through the load gear. Characterized in that it is biased in the direction of the paper feed roller Paper equipment. 5. An upper contact portion and a lower contact portion each comprising a plurality of sawtooth-shaped inclined surfaces meshing with each other, respectively provided on an end face of the load gear and an end face of the loading plate. Item 5. The paper feeding device according to Item 4. 6. An inclination angle of a pair of inclined surfaces constituting each sawtooth of the upper contact portion and the lower contact portion is such that one inclination angle is smaller than the other inclination angle, and the width guide is formed. When moving in the direction of decreasing the width, the load gear is configured to rotate in a direction to climb the inclined surface having the small inclination angle through rotation by interlocking of the pinion meshed with the load gear. The sheet feeding device according to claim 5, wherein 7. A stacking plate on which recording paper is stacked, the other end of which is rotatable in the direction of a paper feed roller around a rotation shaft provided at one end; A housing includes a pair of width guides for regulating the width direction position, a pair of racks integrally formed with the width guides, and a pinion rotatably meshing with the racks and allowing the width guides to move in a left-right manner. Wherein the outer peripheral portion of the flange of the pinion forms a gear, a load gear slidably contacts the end surface to the end surface of the loading plate, and the outer peripheral portion of the outer periphery of the flange of the pinion. A compression spring is disposed between the housing and the load gear, and an end face of the load gear is placed on the loading plate by an elastic load of the compression spring. Press contact with the end face of the Sheet feeding device characterized by serial stacking plate is configured to be biased to the paper feed roller direction. 8. An upper contact portion and a lower contact portion each comprising a plurality of sawtooth-shaped inclined surfaces meshing with each other, each of the end surface of the load gear and the end surface of the loading plate being provided. Item 7. The paper feeding device according to Item 7. 9. An inclination angle of a pair of inclined surfaces forming each sawtooth of the upper contact portion and the lower contact portion is such that one inclination angle is smaller than the other inclination angle, and the width guide is provided. When moving in the direction of narrowing the width, via the rotation by the interlocking of the pinion that meshes the flange with the load gear, the load gear rotates in a direction to climb the inclined surface of the small inclination angle and The sheet feeding device according to claim 8, wherein