JPH11892A - Label printer cutter unit - Google Patents

Abstract

(57) [Abstract] [Problem] To provide a cutter unit of a label printer in which glue does not easily adhere to a fixed blade and a movable blade. A glue pool groove (54, 52) is formed in at least one of the overlapping portions where a fixed blade (42) and a movable blade (40) overlap.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter unit for a label printer, in which a glue groove is formed in an overlapped portion where blades overlap.

[0002]

2. Description of the Related Art Conventionally, a label printer as shown in FIG. 5 has been known.

The label printer 10 mainly includes a label supply shaft 12, a thermal head 14 as a printing mechanism, a platen roller 16, a label sensor 18, a printer main body 22 having guide pins 20, and a label main body 22 fixed or fixed to the printer main body 22. And a cutter unit 24 which is detachably attached.

The label printer 10 uses, for example, a print medium 2 as shown in FIG. This print medium 2
Is a sheet in which a band-shaped label sheet 6 made of thermal paper is temporarily attached to a band-shaped mount 4 via an adhesive layer (not shown). The back surface 4a of the backing sheet 4 has the label sheet 6
The detection mark 8 for detecting the feed pitch corresponding to the printing range of No. is provided.

The printing medium 2 is mounted on the label supply shaft 12 of the label main body 22, is sandwiched between the thermal head 14 and the platen roller 16 via the guide pin 20, and is drawn out to the cutter unit 24 side.

As shown in Japanese Utility Model Application Laid-Open No. 6-688, for example, a cutter unit 24 is provided with a fixed blade 26 and a movable blade 28 which is disposed so as to be able to move forward and backward with respect to the fixed blade 26 by driving means (not shown). The printing medium 2 fed from the printer main body 22 is cut by the cutter unit 24 at a predetermined pitch. That is, the print medium 2 pulled out from the label supply shaft 12 and nipped between the thermal head 14 and the platen roller 16 is fed out toward the cutter unit 24 by the rotation of the platen roller 16.
The detection mark 8 of the print medium 2 is detected by a label sensor 18 disposed in a “transport path” formed between the printer unit 2 and the label supply shaft 12, and the cutter unit is synchronized with the pitch of the detection mark 8. The drive means (not shown) of 24 operates to advance the movable blade 28 with respect to the fixed blade 26, and intersects the fixed blade 26 and the movable blade 28, so that the label sheet 6 of the printing medium 2 has a predetermined pitch. And the entire backing sheet 4 is cut.

By the way, such a cutter unit 24
In the case of the label printer 10 equipped with a label, there is a problem that as the cutting of the print medium 2 progresses, the glue adheres to the fixed blade 26 or the movable blade 28 and becomes difficult to cut. That is, since the fixed blade 26 and the movable blade 28 intersect and cut the print medium 2 while overlapping and sliding, the label sheet 6
The adhesive of the adhesive layer (not shown) interposed between the paper and the backing paper 4 may adhere to the fixed blade 26 or the movable blade 28, and if the adhesive enters the overlapping portion of the two blades 26, 28, the movement becomes gradually worse. As a result, the printing medium 2 was cut poorly. Adhesion of glue (not shown) to the fixed blade 26 and the movable blade 28 was particularly remarkable in a so-called "mount without label" in which the adhesive layer was exposed without a mount.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a label printer cutter unit in which glue does not easily adhere to a fixed blade and a movable blade. Make it an issue.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a cutter unit of a label printer according to the present invention, when cutting a print medium, applies a paste to at least one of overlapping portions where a fixed blade and a movable blade overlap each other. A groove for accumulation is formed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutter unit of a label printer according to the present invention will be described with reference to FIGS. In addition,
The same parts as those in the conventional example are denoted by the same reference numerals, and the detailed description thereof is omitted.

FIG. 1 shows a cutter unit 3 according to the present invention.
0 is a front view mainly showing a motor 3 as a driving means.
2, transmission gear 34, rotary transmission 36, movable blade operating member 3
8 and a movable blade 40 and a fixed blade 42. The cutter unit 30 is attached to the printer main body 22 by a known method.

A motor 32 as a driving means rotates a rotating shaft 46 having a gear 46a at a distal end thereof in a fixed direction in synchronization with the label sensor 18 disposed on the "conveying path".

The transmission gear 34 has one end of the peripheral edge meshed with the gear 46a of the rotary shaft 46, the other end meshed with the rotary transmission 36, and the rotation of the motor 32
Is to be conveyed to.

The rotary transmission 36 has a gear 36a formed on the peripheral edge thereof and has a cam groove 48 at an eccentric position. The gear 36a meshes with the transmission gear 34, and the rotation shaft 46 of the motor 32 and the transmission gear 34
The rotary transmission 36 is configured to rotate via the.
The position of the cam groove 48 is displaced with the rotation of the rotary transmission 36.

A fixed pin 50 that is inserted into the cam groove 48 of the rotary transmission 36 is attached to the movable blade operating member 38 at the lower end in FIGS. When the cam groove 48 changes its position with the rotation of the rotary transmission 36, the fixed pin 50 inserted into the cam groove 48 moves upward or downward, and as a result, the movable blade operating member 38 will move up and down.

The movable blade 40 is attached to the upper end of the movable blade operating member 38. As shown in FIG. 3, the movable blade 40 is substantially parallel to the blade edge at a position close to the blade edge and in the width direction. A groove 52 is formed all over W.

As with the movable blade 40, the fixed blade 42
A groove 54 is formed substantially parallel to the cutting edge and in the width direction W at a position near the cutting edge on the lower end side.

The grooves 52 and 54 are glue pools for dropping the glue. More specifically, the grooves 52 and 54 are formed at the overlapped portions of the movable blade 40 and the fixed blade 42 which overlap when cutting the print medium 2. Have been.

The printing medium 2 is cut by the cutter unit 30 having such a configuration.

When the print medium 2 is fed out from the printer main body 22, the detection mark 8 provided on the back surface 4a of the backing paper 4 of the print medium 2 has the label sensor 1 disposed on the "transport path".
8, the motor 32 is rotated to cut the print medium 2 at a predetermined pitch.

When the motor 32 rotates, the rotation is performed by the rotation shaft 46, the transmission gear 34, the rotation transmission 36, and the rotation transmission 3
The movable blade 4 is sequentially transmitted to the fixed pin 50 inserted in the cam groove 48 of the movable blade 6 to move the movable blade operating member 38 up and down.
0 is allowed to advance or retreat with respect to the fixed blade 42.

When the movable blade 40 advances, the printing medium 2
At this time, even if glue (not shown) between the label sheet 6 and the backing sheet 4 adheres to the movable blade 40 or the fixed blade 42, a groove for glue accumulation is formed in the overlapped portion of the blades 40 and 42. 52 and 54 are formed, and the movable blade 40 and the fixed blade 42 overlap with each other while sliding and act to drop glue (not shown) into the respective grooves 52 and 54. The print medium 2 is hardly left on the movable blade 42 and the cutting failure of the print medium 2 due to the influence of the adhesive (not shown) is eliminated.

In this embodiment, the grooves 52,
Although the example in which 54 is formed on both the movable blade 40 and the fixed blade 42 has been described, it is a matter of course that the present invention is not limited to this, and it may be formed on either one of them.

Further, a plurality of grooves 52 and 54 may be provided in the overlapping portion.

[0025]

According to the present invention, as described above, at least one of the overlapping portions where the fixed blade and the movable blade overlap each other is provided with a groove for glue accumulation. Even if the glue adheres, the glue that has adhered is dropped into the groove for the glue pool, which has the effect of eliminating cutting failure due to the glue.

[Brief description of the drawings]

FIG. 1 is a front view of a cutter unit according to the present invention.

FIG. 2 is a partial side sectional view of the same along the line II-II in FIG. 1;

FIG. 3 is a front view of the movable blade and the fixed blade.

FIG. 4 is a partial cross-sectional view taken along the line IV-IV of FIG. 3;

FIG. 5 is a side view showing an example of a conventional label printer.

FIG. 6 is a perspective view showing an example of a print medium used in the label printer.

[Explanation of symbols]

 2 Print medium 4 Backing paper 4a Back side of backing paper 4 6 Label sheet 8 Detection mark 10 Label printer 12 Label supply shaft 14 Thermal head (printing mechanism) 16 Platen roller (printing mechanism) 18 Label sensor 20 Guide pin 22 Printer body 30 Cutter unit ( Embodiment of the present invention) 32 Motor 34 Transmission gear 36 Rotary transmission 36a Gear of rotation transmission 36 38 Movable blade operating member 40 Movable blade 42 Fixed blade 46 Rotating shaft 46a Gear 48 Cam groove 50 Fixed pin 52 Groove 54 Groove for glue pool

Claims (1)

[Claims] 1. A label for cutting a band-shaped printing medium on which predetermined information is printed by a printing mechanism provided in a printer main body at a predetermined pitch by a fixed blade and a movable blade provided to be movable forward and backward with respect to the fixed blade. A cutter unit for a label printer, wherein a groove for a puddle of glue is formed in at least one of the overlapping portions where the fixed blade and the movable blade overlap when the print medium is cut.