JPH10279131A - Device for narrowing medium in width direction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for narrowing a medium in a width direction in which structure can be simplified, and which can be compacted. SOLUTION: A device comprises an arm disposed to freely oscillate, rollers 17, 18 rotatably supported at a tip of the arm, and a drive means to press the rollers 17, 18 to a side edge of a medium. In this case, the arm is rotated by the drive means to press the rollers 17, 18 to the side edge of the medium. As a result, the medium is pressed to a reference surface 12. The medium can thus be narrowed in a width direction. During this while, the medium is being carried, so that the rollers 17, 18 are rotated to follow carry of the medium to guide the medium. Friction resistance between the rollers 17, 18 and the side edge can thus be reduced, thereby generation of oblique movement of the medium after it is narrowed in the width direction can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium width shifting device.

[0002]

2. Description of the Related Art Conventionally, for example, when printing is performed on a medium by a print head, or when magnetic data is written or read on a medium by a magnetic head, a medium inserted from an insertion slot is inserted. It is necessary to send the print head, the magnetic head, and the like to the processing unit provided. Therefore,
A medium width shifting device is provided in the medium transport path, the medium width shifting device performs width shifting of the medium, and sends the medium to the processing unit along a reference plane.

[0003] The medium width shifting device includes an arm disposed swingably, a pressure disposed at a tip of the arm and extending in parallel with a reference plane, and rotating the arm and controlling the pressure. It is provided with a magnet that presses against the side edge of the medium to shift the width. Then, when media of various widths are sent, the magnet opens the arm at an angle corresponding to the width of the medium, and then presses the pressure against the side edge of the medium to perform width shifting. ing.

Therefore, the medium whose width has been shifted is sent to the processing section along the reference plane (Japanese Patent Laid-Open No. 4-173).
No. 642).

[0005]

However, in the above-mentioned conventional medium width shifting device, the width is adjusted by pressing the pressure against the side edge of the medium. Therefore, the side edge of the medium is dragged by the pressure, and the width is reduced. Skew may occur in the medium after the shifting. Then, the medium width shifting device needs to repeat the width shifting every time the medium is skewed, so that the processing time becomes long.

In addition, a mechanism for supporting not only the pressure extending parallel to the reference plane but also supporting the pressure parallel to the reference plane when the arm is swung is required. This complicates the structure and increases the size of the medium width-shifting device. The present invention solves the problems of the above-described conventional medium-width-shifting device, does not cause skew of the medium after width-shifting, can shorten the processing time, and can simplify the structure. It is another object of the present invention to provide a medium width shifting device that can be downsized.

[0007]

In order to achieve the object, in the medium width shifting device of the present invention, an arm arranged to be swingable, a roller rotatably supported at the tip of the arm, and the arm are provided. Rotating means for driving the roller against the side edge of the medium.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a first operation state diagram of the medium width deviation device according to the first embodiment of the present invention, FIG. 2 is a second operation state diagram of the medium width deviation device according to the first embodiment of the present invention, FIG. 3 is a third operation state diagram of the medium width shifting device according to the first embodiment of the present invention.
FIG. 5 is a fourth operation state diagram of the medium width deviation device according to the first embodiment of the present invention, and FIG. 5 is a fifth operation state diagram of the medium width deviation device according to the first embodiment of the present invention. In this case, a case will be described in which the medium width shifting device is attached to the printing device.

In FIG. 1, reference numeral 11 denotes a transport path, and reference numeral 12 denotes a reference plane for setting a reference position for width adjustment in the transport path 11;
Reference numeral 5 denotes a connecting rod as an arm provided so as to be swingable about a rotation fulcrum 13, 16 denotes a connection rod as an arm provided so as to be swingable about a fulcrum 14, and 17 denotes the connection. A roller rotatably supported at a tip of the rod 15 about a rotation fulcrum 21, a roller 18 supported at a tip of the connecting rod 16 so as to be rotatable about a rotation fulcrum 22, and a roller 23 conveyed in the direction of an arrow. A medium 24 such as a cut sheet is a side edge of the medium 23. The medium 2
A printing unit (not shown) is provided downstream of the medium width shifting device in the transport direction of 3, and printing is performed on the medium 23 by a print head provided in the printing unit.

Further, a stepping motor (not shown) as driving means is connected to the rotation fulcrums 13 and 14, respectively. By driving the stepping motor, the connecting rods 15 and 16 are rotated counterclockwise from a reference position. Can be rotated by any angle. in this case,
Before starting the side-by-side movement, as shown in FIG.
The connecting rods 15 and 16 are oriented at a right angle to the transport direction of the medium 23 and are located at reference positions. And
When an instruction to convey a medium is output from the control unit of the printing apparatus (not shown), as shown in FIG. 2, the connecting rods 15 and 16 are rotated counterclockwise by angles θ1 and θ2 from the reference position by the respective stepping motors. Be moved. In this case, as shown in FIG. 3, the angle θ is set so that the roller 17 is pressed against the side edge 24 of the medium 23 with a small force.
1 is set, and the angle θ2 is set so that the roller 18 stops at a position slightly apart from the side edge 24. That is, the angle θ2 is set slightly smaller than the angle θ1.

Therefore, when the medium 23 is conveyed in the direction of the arrow and sent to the medium width shifting device, the connecting rod 15 is rotated, and the roller 17 is pressed against the side edge 24. As a result, the medium 23 is moved rightward in the figure and pressed against the reference surface 12. In this manner, the width of the medium 23 can be adjusted. Further, the structure can be simplified, and the size of the medium width shifting device can be reduced.

During this time, since the medium 23 is being conveyed in the direction of the arrow, the roller 17 is rotated following the conveyance of the medium 23 to guide the medium 23. Therefore,
Since the frictional resistance between the roller 17 and the side edge 24 can be reduced, it is possible to prevent the skew of the medium 23 after the width adjustment. Further, since the roller 18 is disposed downstream of the roller 17 in the transport direction of the medium 23, the roller 18 and the side edge 24 come into contact with each other when the medium 23 is skewed for some reason. Let me do. Therefore, it is possible to prevent the skew of the medium 23 from occurring.

In the present embodiment, the angle θ2
Is smaller than the angle θ1, the roller 18 can be stopped at a position slightly apart from the side edge 24. However, by making the connecting rod 15 shorter than the connecting rod 16, the roller 18 can be stopped. It is also possible to stop at a position slightly apart from the side edge 24.
In that case, a common stepping motor is used to rotate the connecting rods 15 and 16, and the connecting rod 15 and the connecting rod 1 are used.
6 are connected by a link.

When the connecting rod 15 is rotated by the stepping motor, the roller 17
When a pulse is sent to the stepping motor even after the roller is pressed, the stepping motor loses synchronism and the roller 1
7 is not pressed against the side edge 24 any more. Also, the shaft of the stepping motor and the rotation fulcrum 1
A clutch mechanism that idles when a predetermined force or more is applied may be provided between the clutch mechanism and the clutch mechanism.

Next, the operation for shifting the width of the medium 25 such as a passbook having a smaller width than the medium 23 will be described. In this case, as shown in FIG. 4, the connecting rods 15 and 16 are rotated counterclockwise by angles θ3 and θ4 from the reference position by the respective stepping motors. In addition,
As shown in FIG. 5, a roller 1 is attached to a side edge 26 of the medium 25.
The angle θ3 is set so that the roller 7 is pressed with a slight force, and the angle θ4 is set so that the roller 18 stops at a position slightly apart from the side edge 26. That is, the angle θ4 is set slightly smaller than the angle θ3.

As described above, by rotating the connecting rods 15 and 16 by a predetermined angle from the reference position corresponding to the width of the medium, it is possible to adjust the width of the medium having various widths. Next, a second embodiment of the present invention will be described. FIG. 6 is a first operation state diagram of the medium width shifting device according to the second embodiment of the present invention, and FIG. 7 is a second operation state diagram of the medium width shifting device according to the second embodiment of the present invention. is there. In addition, about what has the same structure as 1st Embodiment, the description is abbreviate | omitted by attaching the same code | symbol.

In this case, the connecting rods 55, 5
Each of the reference numerals 6 is rotated counterclockwise and clockwise by a stepping motor (not shown) as a driving means. Further, first and second medium detection sensors 27 and 28 are disposed on the upstream side and the downstream side in the transport direction of the medium 23 along the reference surface 12, and the first and second medium detection sensors 27 and 28 are provided. Thereby, the rear end 32 of the medium 23 can be detected.

In this case, before the width shifting operation is started, the connecting rods 55 and 56 are oriented in a direction perpendicular to the direction in which the medium 23 is conveyed, and are placed at a reference position. Then, when an instruction to convey the medium is output from the control unit of the printing apparatus (not shown), the medium 23 is conveyed on the conveyance path 11 in the direction of the arrow. Subsequently, as shown in FIG. 6, when the rear end 32 of the medium 23 is detected by the first medium detection sensor 27, the connecting rods 55 and 56 are rotated counterclockwise from the reference position by the respective stepping motors. Moved, medium 23
The roller 17 is pressed against the side edge 24 with a slight force. In this manner, the width of the medium 23 can be adjusted.

Next, when the medium 23 is further conveyed and the rear end 32 of the medium 23 is detected by the second medium detecting sensor 28, as shown in FIG.
6 is rotated clockwise by being inverted by each stepping motor, and the roller 17 is pressed against the side edge 24 with a slight force. In this manner, the width of the medium 23 can be adjusted twice by one roller 17.

Next, a third embodiment of the present invention will be described. FIG. 8 is an operation state diagram of the medium width shifting device according to the third embodiment of the present invention. In addition, about what has the same structure as 1st Embodiment, the description is abbreviate | omitted by attaching the same code | symbol. In this case, the connecting rod 57 as an arm is rotated counterclockwise by a stepping motor (not shown) as driving means, and the connecting rod 58 as an arm is rotated clockwise by another stepping motor (not shown) as driving means. Thereby, the width of the medium 33 such as a vertically long form can be adjusted.

Therefore, before starting the width shifting operation, the connecting rods 57 and 58 are oriented at a right angle to the transport direction of the medium 33 and are set at the reference position. When an instruction to convey the medium is output from the control unit of the printing apparatus (not shown), the connecting rod 57 is rotated counterclockwise, and the roller 17 is pressed against the side edge 59 of the medium 33 with a slight force. . In this way, the width of the medium 33 can be adjusted. On the other hand, the connecting rod 58 is rotated clockwise, and the roller 18 is stopped at a position slightly apart from the side edge 59.

In this embodiment, the medium 33
Downstream of the roller 17 in the transport direction of the roller 18
Is arranged, the roller 18 and the side edge 59 are brought into contact with each other when the medium 33 is skewing for some reason. Therefore, it is possible to prevent the skew of the medium 33 from occurring. In addition, since the connecting rod 58 is rotated clockwise with respect to the reference position, the distance between the rollers 17 and 18 is increased. As a result, even when a vertically long medium 33 is transported,
The occurrence of skew can be prevented.

Next, a fourth embodiment of the present invention will be described. FIG. 9 is a diagram showing a first operation state of the medium width shifting device according to the fourth embodiment of the present invention, and FIG.
FIG. 11 is a second operation state diagram of the medium width deviation device according to the fourth embodiment, and FIG. 11 is a third operation state diagram of the medium width deviation device according to the fourth embodiment of the present invention. In addition, about what has the same structure as 1st Embodiment, the description is abbreviate | omitted by attaching the same code | symbol.

In this case, as shown in FIG. 9, the medium 34 conveyed in a deformed state can be shifted to the width. For this purpose, when a medium conveyance instruction is output from a control unit of a printing apparatus (not shown), first, as shown in FIG. 10, the connecting rod 15 as an arm is rotated clockwise, and the side edge of the medium 34 is rotated. The roller 17 is slightly separated from 60. As a result, the deformation of the medium 34 is eliminated.

Subsequently, as shown in FIG.
Is rotated counterclockwise, and the roller 1 is
7 is pressed with slight force. In this way, the width of the medium 34 can be adjusted. Next, a fifth embodiment of the present invention will be described. FIG. 12 is an operation state diagram of the medium width shifting device according to the fifth embodiment of the present invention. In addition, about what has the same structure as 1st Embodiment, the description is abbreviate | omitted by attaching the same code | symbol.

In this case, the connecting rods 15, 1 as arms are provided.
Rollers 35 and 36 made of an elastic material are rotatably supported at the tip of the roller 6. Therefore, when the rollers 35 and 36 are pressed against the side edge 24 of the medium 23 with a slight force,
The elasticity of the rollers 35 and 36 can prevent the side edge 24 from being deformed or broken. In the above embodiments, a stepping motor is used as the driving means, but a solenoid or the like may be used instead of the stepping motor.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0028]

As described above in detail, according to the present invention, in the medium width shifting device, an arm arranged to be swingable and a roller rotatably supported at the tip of the arm are provided. Driving means for rotating the arm and pressing the roller against the side edge of the medium.

In this case, the arm is rotated by the driving means, and the roller is pressed against the side edge of the medium. As a result, the medium is pressed against the reference surface. In this way, it is possible to perform the width adjustment of the medium. Further, the structure can be simplified, and the size of the medium width shifting device can be reduced. During this time, since the medium is being conveyed, the rollers are rotated following the conveyance of the medium to guide the medium. Therefore, the frictional resistance between the roller and the side edge can be reduced, so that the skew of the medium after the width adjustment can be prevented. As a result, the processing time of the medium width shifting device can be shortened.

[Brief description of the drawings]

FIG. 1 is a first operation state diagram of a medium width shifting device according to a first embodiment of the present invention.

FIG. 2 is a second operation state diagram of the medium width shifting device according to the first embodiment of the present invention.

FIG. 3 is a third operation state diagram of the medium width shifting device according to the first embodiment of the present invention.

FIG. 4 is a fourth operation state diagram of the medium width shifting device according to the first embodiment of the present invention.

FIG. 5 is a diagram illustrating a fifth operation state of the medium width shifting device according to the first embodiment of the present invention.

FIG. 6 is a first operation state diagram of a medium width shifting device according to a second embodiment of the present invention.

FIG. 7 is a diagram illustrating a second operation state of the medium width shifting device according to the second embodiment of the present invention.

FIG. 8 is an operation state diagram of a medium width shifting device according to a third embodiment of the present invention.

FIG. 9 is a first operation state diagram of a medium width shifting device according to a fourth embodiment of the present invention.

FIG. 10 is a diagram illustrating a second operation state of the medium width shifting device according to the fourth embodiment of the present invention.

FIG. 11 is a diagram illustrating a third operation state of the medium width deviation device according to the fourth embodiment of the present invention.

FIG. 12 is an operation state diagram of a medium width shifting device according to a fifth embodiment of the present invention.

[Description of Signs] 12 Reference plane 15, 16, 55 to 58 Connecting rod 17, 18, 35, 36 Roller 23, 25, 33, 34 Medium 24, 26, 59, 60 Side edge θ1 to θ4 Angle

Claims (5)

[Claims] (A) an arm arranged to be swingable;
(B) a roller rotatably supported at the tip of the arm; and (c) driving means for rotating the arm and pressing the roller against a side edge of the medium. apparatus. 2. The medium width shifting device according to claim 1, wherein the driving unit rotates the arm from a reference position by an angle corresponding to a width of the medium. 3. The driving device according to claim 1, wherein
2. The medium width shifting device according to claim 1, wherein the arm is selectively rotated counterclockwise and clockwise from a reference position. 4. The apparatus according to claim 1, wherein the roller is made of an elastic material. 5. An other arm is swingably disposed downstream of the arm in the medium transport direction, and another roller is rotatably supported at a tip of the other arm. 2. The medium width shifting device according to 1.