JP2002284429A - Label releasing mechanism, and label printer having it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a label releasing mechanism capable of preventing slide of release paper by increasing a paper feeding force to the release paper without increasing a pressing force of a pressing roller or changing an installation position of the pressing roller. SOLUTION: A label releasing member 20 comprises a releasing member 21 capable of guiding release paper S1 in the separating direction from a label S2 with respect to label paper S having the label S2 adhered to the release paper S1, pressing roller 22 capable of pressing the release paper S1 to a platen roller 12, and a winding member 23 for winding the release paper S1 between the releasing member 21 and the winding member 22 on the platen roller 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for peeling a label from a release paper on a label paper having a label attached to a series of release papers.

[0002]

2. Description of the Related Art In general, when printing on this kind of label paper, a printer configured to print the label paper at a predetermined printing pressure by a thermal head while feeding the label paper by a platen roller is known. Although used, the printer is provided with a mechanism for separating the label from the backing paper (release paper).

[0003] Such a label peeling mechanism is disposed downstream of the platen roller in the paper feed direction, and includes a peeling member and a pressing roller.

The peeling member is a member configured to guide only the backing paper to the platen roller at a predetermined acute angle with respect to the label paper fed from between the thermal head and the platen roller. The pressing roller is configured to press the mount guided by the peeling member while rotating by the platen roller with a predetermined pressing force.

When the label paper printed on the label by the thermal head passes through the peeling member with the rotation of the platen roller, the label is sent as it is along the label discharge path, while the backing paper is The sheet is fed along the sheet-mounting discharge path while being bent against the label by the peeling member and pressed against the platen roller by the pressing roller.

[0006]

In such a conventional label peeling mechanism, although the platen roller sends a certain amount of label paper between the thermal head and the platen roller, the platen roller is pressed against the thermal head. Since the mount slides between the roller and the thermal head, there is a problem that the mount swells between the pressing roller and the thermal head.

This is because the paper feed force of the mount is insufficient between the thermal head and the pressing roller. As a measure for increasing the paper feed force, for example,
Increasing the pressing force of the pressing roller or winding the portion of the backing material pressed by the pressing roller around the platen roller at a predetermined winding angle may be mentioned.

However, when the pressing force of the pressing roller is increased, an extra load is applied to the platen roller.
The driving force for rotating the platen roller must be increased. On the other hand, in order to wind the backing paper around the platen roller at a predetermined winding angle, for example, it is conceivable to shift the position where the pressing roller is installed, but in this case, the pressing roller is more distant from the thermal head than the initial position. In addition, the influence of the pressing force of the pressing roller on the printing pressure of the thermal head increases, and there is also a problem that the position at which other members are installed must be shifted with the change of the position of the pressing roller.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems of the prior art. It is an object of the present invention not to increase the pressing force of the pressing roller and to set the installation position of the pressing roller. An object of the present invention is to provide a label peeling mechanism capable of preventing the slippage of the release paper by increasing the paper feeding force of the release paper without any change.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a label paper having a label attached to a release paper, the release paper being released by a release member with the paper feed by a paper feed roller. In a label peeling mechanism configured to press the release paper against a paper feed roller by a pressing member while guiding the release paper away from the label, for winding the release paper between the release member and the pressing member around the paper feed roller. A label peeling mechanism comprising a winding member.

In the case of the present invention, the release member is wound around the paper feed roller by the winding member to generate a paper feed force (frictional force) between the release paper and the paper feed roller. By simply adding the wrapping member to the label peeling mechanism without increasing the pressing force of the pressing member and without changing the installation position of the pressing member, with the current various setting conditions, the release paper Can be prevented from slipping.

In the present invention, it is also effective that the wrapping member is arranged at a predetermined distance from the paper feed roller.

According to the present invention, the influence of the wrapping member on the driving force of the paper feed roller and the printing pressure of the print head is obtained by separating the wrapping member from the paper feed roller at a predetermined interval. Can be eliminated.

Further, in the present invention, it is effective that the winding member is configured to be rotatable.

According to the present invention, the adhesive remaining on the release paper is less likely to adhere to the same portion of the wrapping member by the driven rotation of the wrapping member, so that the adhesive is not affected by the adhesive. Release paper can be fed.

Further, in the present invention, it is also effective that the winding member is configured to be movable with a predetermined pressing force.

According to the present invention, when the label peeling mechanism is arranged so as to be operable with respect to the paper feed roller, while the winding member presses the release paper to wind the release paper around the paper feed roller, Since the winding member slightly escapes from the paper feed roller due to the drag received from the backing sheet, there is an advantage that no excessive tension is generated in the release paper and a large torque is not required when starting the rotation of the paper feed roller.

On the other hand, the present invention relates to a paper feed roller capable of feeding a label paper having a label attached to a release paper, a print head capable of printing a label sandwiched between the paper feed rollers, and a label paper. A first cover configured to be openable and closable to open a portion accommodating the sheet, and a cover configured to be openable and closable to open a paper feed roller and a print head, wherein the first cover is separated from the first cover. A second cover having a discharge port for discharging the paper and having a discharge port for discharging the label, and the label peeling mechanism according to any one of the above aspects of the present invention, The label printer is characterized in that the label peeling mechanism is configured to interlock with the second cover while the label peeling mechanism is configured to interlock with the second cover.

According to the present invention, it is possible to set the label paper so that the release paper does not slip just by closing the first cover and the second cover.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a label printer having a label peeling mechanism according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a label printer according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating a state where a second cover of the label printer is opened. FIG. 3 is a diagram showing a schematic configuration of a main part of the printer.

FIG. 4 is a diagram showing a positional relationship of the label peeling mechanism of the embodiment.

As shown in FIG. 1, the label printer 1 of the present embodiment has a box-shaped main body case 2 opened at an upper portion (upper portion of FIG. 1). At the bottom of the main body case 2, a holder portion 3 capable of storing a roll-shaped label paper S is formed. Here, the label paper S used in the present embodiment is wound with a plurality of labels S2 affixed to a series of mounts (release paper) S1 on the outside.

A first cover 4 and a second cover 5 which can be opened and closed so as to cover the opening of the main body case 2 are integrally formed at both upper ends of the main body case 2. Is provided.

The first cover 4 is supported by the first hinge 6, and is configured to open the holder 3 when opened. The second cover 5 is supported by the second hinge 7, and is arranged so as to be on the same plane as the first cover 4 when both the first and second covers 4 and 5 are closed. Have been.

A label outlet 8 for discharging the label S2 is formed in the middle part of the second cover 5. Further, the distal end of the second cover 5 is formed in a shape that forms a mount discharge port 9 for discharging the mount S1 between the second cover 5 and the distal end of the first cover 4.

A thermal head (print head) 10 is provided in the middle part of the main body case 2. The thermal head 10 is configured to be capable of printing by a heat-sensitive method, and is arranged at a position where it can contact a label S2 on a paper path connecting the holder unit 3 and the label discharge port 8. The thermal head 10 is configured to be urged toward the holder 3 by a compression coil spring 11.

At the end of the first cover 4, a platen roller (paper feed roller) 12 is provided. When the first cover 4 is closed, the platen roller 12 sandwiches the label paper S with a certain resistance between the first cover 4 and the thermal head 10, and pulls out the paper guide 13 while pulling out the label paper S from the holder 3. The paper is fed to the label discharge port 8 side via the printer.

As shown in FIG. 1 or 2, in the case of the present embodiment, the label printer 1 has a label peeling mechanism 20.
The peeling member 21 includes a pressing roller (pressing member) 22 and a winding member 23. The peeling member 21 is provided on the first cover 4, and the pressing roller 22 and the winding member 23 are provided on the second cover 5. I have.

As shown in FIG. 3, the peeling member 21 is a plate-like member extending in the paper width direction, and is disposed near the platen roller 12 and at a downstream portion in the paper feeding direction. The peeling member 21 comes into contact with the back surface of the backing paper S1 of the label paper S sent out between the platen roller 12 and the thermal head 10.

The pressing roller 22 and the wrapping member 23 are unitized with each other and are integrally attached to the second cover 5.

The pressing roller 22 is configured to contact with the platen roller 12 at a predetermined position and rotate at a predetermined position with a predetermined pressing force by being urged by a compression coil spring 24. Here, as shown in FIG. 4, at a position where the pressing roller 22 comes into contact with the platen roller 12, a straight line L 1 connecting the pressing roller 22, a contact point P 1 of the platen roller 12, and a tip P 2 of the separating member 21 is formed by a separating member. A predetermined acute angle β1 with respect to the tangent line L2
And the mount S1 can be guided to the mount discharge port 9.

As shown in FIG. 3, the wrapping member 23 is a plate-like member extending in the paper width direction, and is positioned at a predetermined distance from the platen roller 12 between the pressing roller 22 and the peeling member 21. Are located. Further, the winding member 23 has a “comb shape” having a gap at regular intervals in the paper width direction.
And is in contact with the mount S1 with a small area. Further, the surface of the wrapping member 23 is subjected to a peeling treatment such as a fluorine coating.

Here, as shown in FIG.
Is determined so that the leading end P3 of the winding member approaches the platen roller 12 within a range that does not contact the platen roller 12 beyond the straight line L1 formed between the pressing roller 22 and the peeling member 21. Can be

Thus, the label peeling mechanism 20 moves the leading end P2 of the peeling member 21 and the wrapping member 23 on the backing sheet S1.
The mount S1 is bent at a predetermined peeling angle β2 (<β1) with respect to the tangent L2 of the peeling member 21 between the leading end P3 of the winding member 23 and the pressing roller 22.
A paper path s is formed such that the mount S1 is wound around the platen roller 12 at a predetermined winding angle α.

In the case of the present embodiment having such a configuration, as shown in FIG. 2, after the label paper S is first stored in the holder portion 3 of the label printer 1 and the first cover 4 is closed, The label paper S is sandwiched between the platen roller 12 and the thermal head 10.

Next, as shown in FIG. 1, when the second cover 5 is closed, the platen roller 12 and the thermal head 1 are closed.
Label paper that protrudes from zero (usually, unlabeled backing paper S
1) is bent into a substantially “Z” shape by the label peeling mechanism 20 (see the dashed line in the figure).

Then, the platen roller 12 is rotated, and printing is performed on the label S2 of the label paper S by the thermal head 10.

Thereafter, when the label paper S passes through the peeling member 21, the label S2 of the label paper S tries to proceed toward the label discharge port 8 as it is, but the mount S1 of the label paper S is peeled. It is bent between the member 21 and the wrapping member 23 and advances in a different direction from the label S2. As a result, the label S is peeled from the backing sheet S1 at the leading end of the peeling member 21.

On the other hand, the pressing roller 22 and the platen roller 1
2 is wound around the platen roller 12 within a predetermined range by the winding member 23, so that the pressing roller 22 and the platen roller 12
A paper feeding force (frictional force) of a predetermined magnitude is generated, and the mount S1 does not slip. As a result, the platen roller 12
The mount S1 is fed and discharged from the mount discharge port 9 while the paper feed amount is substantially equal between the pressing roller 22 and the thermal head 10.

As described above, according to the present embodiment,
The sheet S1 between the pressing roller 22 and the peeling member 21 is wound around the platen roller 12 by the winding member 23, and the sheet S1
A paper feed force (frictional force) is generated between the pressing roller 22 and the platen roller 12, so that the pressing force of the pressing roller 22 is not increased and the current position of the pressing roller 22 is not changed. By simply adding the wrapping member 23 to the label peeling mechanism 20 under the various setting conditions described above, the slip of the mount S1 can be prevented.

According to the present embodiment, the winding member 2
3 is separated from the platen roller 12 by a predetermined distance, so that the winding member 23 is not affected by the driving force of the platen roller 12 or the printing pressure of the thermal head 10.
Can be eliminated.

Further, according to the present embodiment, since the mounting sheet S1 between the peeling member 21 and the pressing roller 22 is bent by the winding member 23, the angle at which the mounting sheet S1 is separated from the label S2 is determined by the winding angle. An angle (peeling angle β2) smaller than the case where the attaching member 23 is not provided, and the mount S1
Can be peeled off the label S2.

Further, according to the present embodiment, while the platen roller 12 and the peeling member 21 of the label peeling mechanism 20 are arranged on the first cover 4, the pressing roller 22 of the label peeling mechanism 20 is arranged. And the winding member 23 is arranged on the second cover 5, so that the first cover 4 and the second
By simply closing the cover 5, the label paper S can be set so that the backing paper S1 does not slip.

FIG. 5 is a diagram showing a schematic configuration of a label peeling mechanism according to a second embodiment of the present invention.

As shown in FIG. 5, the label peeling mechanism 20A of this embodiment differs from the first embodiment only in the wrapping member 20A. That is, the winding member 20 </ b> A is a roller configured to be driven and rotated while being in contact with the mount S <b> 1 between the pressing roller 22 and the peeling member 21.

In the case of this embodiment, the winding member 23A is configured to be rotatable, so that even if a small amount of adhesive remains on the mount S1 and is transferred to the winding member 23A, it is located at the same location. Since the adhesion is reduced, the sheet S1 can be reliably fed without being influenced by the adhesive, which is more advantageous than that of the first embodiment. In particular, the wrapping member 23A
By subjecting the surface to a peeling process such as knurling, it is possible to more effectively eliminate the influence of the adhesive on paper feed.

The other configuration and operation and effect are the same as those of the above-described embodiment, and therefore, detailed description thereof will be omitted.

The present invention is not limited to the above-described embodiment, but can be variously modified.

For example, in the above embodiment, when the winding members 23 and 23A are arranged at predetermined positions of the second cover 5 and the second cover 5 is closed, Although the interval is maintained, the present invention provides a configuration in which the wrapping member is allowed to approach or separate from the second cover 5 and is further urged toward the platen roller 12 with a constant pressing force. It is also possible. in this case,
When the second cover 5 is closed, the winding member presses the mount S1 to wind the mount S1 around the platen roller 12, while the winding member slightly escapes from the platen roller 12 due to the drag received from the mount S1. There is an advantage that no excessive tension is generated in the mount S1 and a large torque is not required when starting rotation of the platen roller 12.

[0051]

As described above, according to the present invention, without increasing the pressing force of the pressing member and without changing the installation position of the pressing member, the label can be simply obtained under the current various setting conditions. The slippage of the release paper can be prevented only by adding a wrapping member to the release mechanism.

Further, according to the present invention, the winding member exerts a driving force on the paper feeding roller and a printing pressure of the print head by separating the winding member from the paper feed roller at a predetermined interval. The effect can be eliminated.

Further, according to the present invention, the release paper can be reliably fed by the driven rotation of the winding member without being affected by the adhesive remaining on the release paper.

Further, according to the present invention, when the label peeling mechanism is arranged so as to be operable with respect to the paper feed roller, excessive tension is not applied to the release paper, and the rotation of the paper feed roller is started. Has the advantage that a large torque is not required.

In addition, according to the present invention, it is possible to set the label paper in a state where the release paper does not slip just by closing the first cover and the second cover.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a schematic configuration of a label printer according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a state where a second cover of the label printer is opened.

FIG. 3 is a diagram illustrating a schematic configuration of a main part of the printer.

FIG. 4 is a diagram showing a positional relationship of the label peeling mechanism of the embodiment.

FIG. 5 is a diagram illustrating a schematic configuration of a label peeling mechanism according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 ... 1st cover 5 ... 2nd cover 10 ... Thermal head (print head) 12 ... Platen roller (paper feed roller) 20 ... Label peeling mechanism 21 ... Peeling member 22 ... Pressing roller (pressing member) 23, 23A ... Winding member

Claims (5)

[Claims] 1. A release member guides a release paper to a label paper having a label attached to the release paper in a direction away from the label with a paper feed roller, and presses the release paper by a pressing member. What is claimed is: 1. A label peeling mechanism configured to press against a feed roller, comprising: a winding member for winding release paper between a peeling member and a pressing member around a paper feed roller. 2. The label peeling mechanism according to claim 1, wherein said winding member is arranged at a predetermined distance from a paper feed roller. 3. The label peeling mechanism according to claim 1, wherein the winding member is configured to be rotatable. 4. The label peeling mechanism according to claim 1, wherein the wrapping member is configured to be movable with a predetermined pressing force. 5. A paper feed roller capable of feeding a label sheet having a label affixed to a release sheet, a print head capable of printing on a label sandwiched between the paper feed roller, and accommodating the label sheet. A first cover configured to be openable and closable to open a portion, and a cover configured to be openable and closable to open the paper feed roller and the print head, wherein a release paper is interposed between the first cover and the first cover. A second cover having a discharge port for discharging labels and a discharge port for discharging labels, and the label peeling mechanism according to any one of claims 1 to 4, The roller is configured to interlock with the first cover, while the label peeling mechanism is configured so that the pressing member and the winding member interlock with the second cover. Label featuring Printer.