JP2021024677A - Printer - Google Patents

Abstract

To provide a printer with a simple mechanism to prevent loosened winding of a roll sheet.SOLUTION: A printer comprises: a roller to rotate a roll sheet; a support to support the roll sheet; and a guide provided on one side face of the roll sheet. The support supports the roll sheet to incline in the direction of the guide.SELECTED DRAWING: Figure 4

Description

The present invention relates to a printer.

In a printer using roll paper as a printing medium, there is a risk of causing problems such as paper deformation and transport jam. The cause of this is the loose winding of the roll paper.

Patent Document 1 describes a printer having a mechanism for preventing such roll paper from loosening. In Patent Document 1, by providing a pressing portion that presses the side surface of the roll paper, rotation due to inertia of the roll paper is suppressed and loosening of the roll paper is prevented.

Japanese Unexamined Patent Publication No. 2005-169959

In the printer of Patent Document 1, loosening of the roll paper is prevented by pressing both side surfaces of the roll paper.

However, this method requires a mechanism for enclosing the roll paper from both sides in order to press the roll paper from the side surface. For this reason, the number of parts increases, and it is inevitable that the equipment becomes complicated and the cost increases.

An object of the present invention is to prevent loosening of roll paper by a simple mechanism in a printer.

The printer according to one aspect of the present invention is a printer that prints on roll paper, and is a roller that rotates the roll paper, a support portion that supports the roll paper, and a guide provided on one side surface of the roll paper. The support portion has a portion, and the support portion supports the roll paper so as to be tilted in the direction of the guide portion.

According to one aspect of the present invention, in a printer, loosening of roll paper can be prevented by a simple mechanism.

It is a side sectional view which showed the main part of the printer of the related technology. It is a side sectional view which showed an example of the posture of the roll paper of the printer of the related technology. It is a side sectional view which showed the main part of the printer which was jammed by the accumulation of loose winding. It is a perspective view which shows the support method of the roll paper in the printer apparatus which concerns on Example 1. FIG. It is a perspective view which shows the schematic shape of the printer apparatus which concerns on Example 2. FIG. It is a perspective view which shows the schematic shape of the other printer apparatus which concerns on Example 2. FIG. It is a perspective view which shows the schematic shape of the other printer apparatus which concerns on Example 2. FIG. It is a perspective view which shows the support method of the roll paper in another printer apparatus which concerns on Example 1. FIG. It is a perspective view which shows the support method of the roll paper in another printer apparatus which concerns on Example 1. FIG.

First, a printer of related technology will be described.

FIG. 1 is a side sectional view showing an outline of a printer using roll paper as a printing medium without measures against loosening.
The printer of FIG. 1 supports the roll paper 1 from below by a transport roller 2 and a support portion 3 that can be rotationally driven by an actuator (not shown). When the transfer roller 2 is driven, the roll paper 1 rotates, the paper tip 9 of the roll paper 1 is drawn into the transfer path 4 under the support portion 3, and is also conveyed by the downstream transfer roller 5 and the driven roller 6, and is thermally driven. It reaches the head 7 and the platen roller 8 and prints on the surface of the roll paper 1 by the thermal head 7. After that, the roll paper 1 is cut to a specified length by a cutter (not shown) provided on the downstream side of the thermal head 7, and is issued as a single slip or the like.

Depending on the shape of the transport path 4, the transport rollers such as the transport rollers 5 and the driven rollers 6 may not be provided, and conversely, there may be two or more pairs of rollers. Further, although the printing method by thermal transfer by the thermal head 7 is adopted this time, the printing method is not limited to this, and other printing methods such as an inkjet method, a laser method, and a dot impact method may be used.

Here, the problems of printers of related technologies will be described. The problem is that the roll paper 1 is rolled loose during operation, causing jams and the like.

There are two main causes of loose winding. The cause of the first point will be described with reference to FIG. Since the roll paper 1 exerts an inertial force on the roll paper 1 due to acceleration / deceleration at the start and end of transportation, the roll paper 1 rotates more than the amount transported by the transport rollers 2, the transport rollers 5, the platen roller 8, and the like. The amount of transportation may increase. As a result, the winding loosening 10 occurs. Hereinafter, the method of generating the winding loosening 10 is referred to as over-rotation of the roll paper.

The cause of the second point will be described with reference to FIGS. 2 (a) and 2 (b). For the sake of simplicity, FIGS. 2 (a) and 2 (b) show only an outline of the rolled paper being conveyed, excluding mechanisms such as rollers. FIG. 2A is a top view thereof, and FIG. 2B is a side view thereof.

When the rotation axis of the roll paper 1 is the axis x, the paper is normally conveyed in the y-axis direction because it coincides with the rotation axis of the transfer roller, but when the roll paper 1 is tilted to x', the paper is conveyed in the y direction. If this is the case, the outermost paper will be separated from the main body of the roll paper 1. As a result, the winding loosening 11 occurs.

Further, even if the inclination of the roll paper 1 is stable in the x-axis direction, when the roll paper 1 is conveyed in the y'direction due to backlash on the left and right of the transport path, the outermost paper is also separated from the main body of the roll paper 1. It will end up. As a result, the winding loosening 11 occurs. Hereinafter, the method of generating the winding loosening 11 is referred to as skewing of the roll paper.

Due to the above-mentioned causes, the winding looseness caused by one issuance is minute, but when the roll paper 1 is piled up during use, the winding looseness becomes large and a problem is caused.

This defect will be described with reference to FIG. FIG. 3 is a side sectional view showing an outline of a state of failure caused by the occurrence of loose winding of a printer which is not provided with measures against loose winding, which is the same as that of FIG.

The looseness of the winding caused by over-rotation or skewing increases as the paper is conveyed, and may extend to the downstream side beyond the conveying roller 2 as shown in FIG. At that time, the loosely wound portion 12 may be caught between the conveying roller 2 and the fixing portion 3, hindering the rotation of the roll paper 1, and causing a jam state in which the paper tip 9 is not conveyed. In addition, even if this jam state does not occur, there is a possibility that the paper may have wrinkles or creases in the loosely wound portion 12, and the issued slip or the like may also have wrinkles or creases. ..

In order to prevent such loose winding of the roll paper, there is a method of pressing both side surfaces of the roll paper. However, this method requires a mechanism for enclosing the roll paper from both sides in order to press the roll paper from the side surface. For this reason, the number of parts increases, and it is inevitable that the equipment becomes complicated and the cost increases. In addition, the visibility of the remaining amount of the roll paper is lowered, and the direction of taking out and loading the roll paper is also limited.

The embodiment solves the problems of the related technology, and prevents the roll paper from loosening by a simple mechanism. Therefore, in the embodiment, a guide portion is provided on one side of the side surface of the roll paper, and the roll paper is supported so as to be tilted in the direction of the guide portion. As a result, the roll paper is rotated by the transfer roller while being in contact with the guide portion, and the paper is conveyed while maintaining the posture of the roll paper in a stable manner.

Hereinafter, the printer of the embodiment will be described with reference to the drawings.

The configuration of the printer of the first embodiment will be described with reference to FIG. Note that FIG. 4 shows a method of supporting the roll paper.
In the first embodiment, the support portion 3 supports the roll paper 1 so as to tilt in the direction of the guide portion 13.
As shown in FIG. 4, the support portion 3 has a convex portion 3a. The convex portion 3a tilts the roll paper 1 toward the guide portion 13. Specifically, the roll paper 1 is supported from below by the transport roller 2 and the support portion 3. At this time, a convex portion 3a is provided on a part of the support portion 3. Further, the guide 13 is provided in the side surface direction of the roll paper 1. The convex portion 3a tilts the roll paper 1 in the direction of the guide portion 13, that is, in the direction of the arrow z.

The prevention mechanism in the first embodiment will be described with respect to the loosening of the roll paper 1 described above.
When the transport roller 2 is rotated by the support method shown in FIG. 4, the roll paper 1 rotates while tilting toward the guide portion 13, and therefore moves little by little in the direction of the guide portion 13. Even if a part of the roll paper 1 comes into contact with the guide portion 13, the force in the direction of the guide portion 13 still works. Therefore, finally, the guide portion 13 and the side surface of the roll paper 1 come into close contact with each other, and the roll paper 1 is brought into contact with each other. It looks like it is pressed against the guide unit 13.

The roll paper 1 is rotated and conveyed by the conveying roller 2 in a state of being in close contact with the guide portion 13. As a result, a frictional force from the guide portion 13 is applied to the roll paper 1 in the direction opposite to the rotation direction, and this force causes resistance to the rotation of the roll paper 1. As a result, over-rotation of the roll paper 1 can be prevented from occurring.

Further, when the roll paper 1 is pressed against the guide portion 13 on the side surface, the side surface of the roll paper 1 follows the guide portion 13, and not only the edges of the paper are aligned, but also the roll paper 1 is less likely to tilt in directions other than the conveying direction. As a result, skewing on the roll paper 1 can be prevented from occurring. In this way, by making it difficult for the roll paper 1 to over-rotate and skew, it is possible to prevent the roll paper 1 from loosening and to prevent problems caused by the loose winding.

The shape of the guide portion 13 must be as large as the diameter of the roll paper 1 so that the side surfaces of the roll paper 1 are evenly aligned when the roll paper 1 is pressed. The portion may have a shape such as a hole or a notch.

The method of supporting the roll paper 1 for preventing loosening in the first embodiment is limited to the method of forming a part of the support portion 3 opposite to the guide portion 13 into a convex shape as shown in FIG. Absent. 8 and 9 show other support methods.

In the support method shown in FIG. 8, a part of the support portion 3 on the side of the guide portion 13 is removed to provide the notch portion 3b. As described above, the support portion 3 has the notch portion 3b. The notch portion 3b tilts the roll paper 1 in the direction of the guide portion 13.

Further, the support method shown in FIG. 9 is a method in which the entire support portion 3 is inclined in the direction of the arrow t with respect to the axis s that is horizontal and parallel to the guide portion 13. At this time, the required amount of inclination is preferably between 0 degrees and 45 degrees with respect to the horizontal plane. As described above, the support portion 3 has an inclined surface inclined in the direction of the guide portion 13. With this inclined surface, the roll paper 1 is tilted in the direction of the guide portion 13. In any of the supporting methods, the roll paper 1 is tilted and supported in the direction of the guide portion 13 while allowing the roll paper 1 to be rotated by the transport roller 2. It is possible.

The configuration of the printer of the second embodiment will be described with reference to FIG.
In the second embodiment, a visual confirmation portion on which the roll paper 1 can be visually recognized is provided on the other side surface of the roll paper 1 and on the side opposite to the guide portion 13. With this visual confirmation unit, it is possible to confirm whether the roll paper 1 is rolled loose and to grasp the remaining amount of the roll paper 1.

As shown in FIG. 5, the visual confirmation unit is composed of a transparent door 50 that can be opened and closed with respect to the other side surface of the roll paper 1. The transparent door 50 improves the visibility of the roll paper 1. Further, by providing the door 50, even if a jam should occur, the roll paper 1 can be taken out from the side surface, which improves convenience.

The visual confirmation unit is not limited to the mechanism as shown in the door 50 of FIG. 6 and 7 show other visual confirmation units.
In FIG. 6, the visual confirmation portion is composed of an opening 51 provided with respect to the other side surface of the roll paper 1.
In FIG. 7, the visual confirmation portion is composed of a window portion 52 provided on the other side surface of the roll paper 1.

According to the above embodiment, the roll paper can be prevented from loosening by a simple configuration of a mechanism for supporting the roll paper and a guide on one side surface. Therefore, it is easy to miniaturize, the number of parts is small, and it can be manufactured at low cost. Further, on the other side surface of the roll paper, a mechanism such as an opening / closing mechanism such as a door or a mechanism such as an opening which is not related to the prevention of loosening can be mounted.

A printer using roll paper as a printing medium is mounted on, for example, an automated teller machine. Then, for example, a schedule or the like is printed on the roll paper.

Further, the present invention is not limited to the above-described examples, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations. Further, it is possible to add / delete / replace a part of the configuration of the embodiment with another configuration.

1 Roll paper 2 Conveying roller 3 Supporting part 3a Convex part 3b Notch part 4 Conveying path 5 Conveying roller 6 Driven roller 7 Thermal head 8 Platen roller 9 Paper tip 13 Guide part 50 Door 51 Opening 52 Window part

Claims (10)

A printer that prints on roll paper
A roller that rotates the roll paper and
A support portion that supports the roll paper and
It has a guide portion provided on one side surface of the roll paper, and has
The support portion
A printer characterized in that the roll paper is supported so as to be tilted in the direction of the guide portion. The roller rotates in contact with the outer circumference of the roll paper,
The support portion supports the roll paper from below and
The support portion
The printer according to claim 1, wherein the roll paper is tilted in the direction of the guide portion while the roll paper is rotated by the roller. The support portion has a convex portion and has a convex portion.
The printer according to claim 1, wherein the roll paper is tilted in the direction of the guide portion by the convex portion. The support portion has a notch portion and has a notch portion.
The printer according to claim 1, wherein the roll paper is tilted in the direction of the guide portion by the notch portion. The support portion
It has an inclined surface inclined in the direction of the guide portion, and has an inclined surface.
The printer according to claim 1, wherein the roll paper is tilted in the direction of the guide portion by the inclined surface. The printer according to claim 1, further comprising a visually confirming portion capable of visually confirming the roll paper on the other side surface of the roll paper and on the side opposite to the guide portion. The visual confirmation unit
The printer according to claim 6, further comprising a transparent door that can be opened and closed with respect to the other side surface of the roll paper. The visual confirmation unit
The printer according to claim 6, wherein the printer is composed of an opening provided for the other side surface of the roll paper. The visual confirmation unit
The printer according to claim 6, further comprising a window portion provided on the other side surface of the roll paper. An automated teller machine having the printer according to claim 1.

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