JPH11305669A - Printing medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe printing medium arranged to prevent abnormal bending especially at the leading end when a tag seal (printing medium) is conveyed with winding by a roller in a printer. SOLUTION: On this printing seal, a slit 15 is formed, which cuts a sheet of release paper 14 of a tag seal 11, which is made by sticking the release paper 14 on a sheet of printing paper 12 with an adhesive, in the direction E perpendicular to the seal transfer direction A across both side edges C, D is in the neighborhood of the end edge B to the seal transfer direction A by a printer. Thus, when the tag seal 11 is wound up around a roller in the printer, a difference in the paper route caused by a difference in winding radius by the paper thickness between the printing paper 12 and the release paper 14 is absorbed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing medium for a printer.

[0002]

2. Description of the Related Art A tag seal forming a printing medium is:
It is formed by bonding release paper to printing paper. A tag seal used for addressing an envelope or the like has individual tag seals that are cut into small portions with a cut in the printing paper, and is formed by bonding a release paper to the whole. FIG.
FIG. 1 is a perspective view schematically showing a conventional tag seal.
In the figure, 1 is a tag seal, 2 is printing paper to be printed by a printer, 3 is an adhesive for bonding the printing paper to a target member for each application, and 4 is protecting the adhesive. Release paper.

As a printer using the tag seal 1 as described above, the tag seal 1 is wound around a platen roller (drive roller) and then fed away from the tag seal 1 toward a print head facing position. There is a paper type. In the printer, the tag seal 1
Is fed downstream while being wrapped around one platen roller (drive roller) with the printing paper 2 outside and the release paper 4 inside, while being pinched by the cooperation of the other platen roller (driven roller). (Conveyed).

[0004]

The tag seal 1 includes:
In the winding portion, the printing paper 2 and the release paper 4
A paper path difference occurs due to a difference in the winding radius for the paper thickness.
Since the printing paper 2 and the release paper 4 are adhered by the adhesive 3, the path difference cannot be absorbed, so that a compressive stress is generated in the inner release paper 4 and the outer printing paper 2
Generates a tensile stress. Such internal stress is
The inner stress continues to act at the point where the winding is completed, that is, the clamping point by each platen roller. At the downstream side beyond the clamping point (at this time, the printing paper 2 is up and the release paper 4 is down), The difference causes a bending force in the tag seal 1.
The bending force causes the leading end side of the tag seal 1 to float.

[0005] The printer is adapted to correspond to a normal printing paper so that its leading end is directed to the head gap between the platen and the print head on the downstream side beyond the above-mentioned clamping point. However, the leading end of the tag seal 1 floats above the head gap, and the leading end is caught on the leading edge of the print head, and in some cases, such as a paper jam. JAM).

In order to solve the above-mentioned problems, the present invention is directed to a tag seal (printing medium) which is conveyed with a roller wound by a printer and printed immediately after release. It is an object of the present invention to provide a printing medium which is safe for such use by preventing abnormal bending particularly at the leading end side.

[0007]

According to one aspect of the present invention, there is provided a print medium having a release paper bonded to a print paper, the release paper having a vicinity of an edge in a print medium transport direction by a printer. A slit formed by cutting the release paper was formed in a direction perpendicular to the print medium transport direction across both side edges of the paper. Therefore, in the printer, when the print medium is wound around the roller, a paper path difference caused by a winding radius difference corresponding to the thickness of the printing paper and the release paper is absorbed.

In the invention according to claim 2, the slit according to claim 1 is formed near each of both end edges in the printing medium transport direction. Therefore, even if the printing medium is conveyed with any edge side leading, the paper path difference is similarly absorbed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a first embodiment of the present invention, which is shown upside down from FIG.

In FIG. 1, reference numeral 11 denotes a tag seal (printing medium) similar to the tag seal 1 in FIG. 12 is designed to be printed by a printer and has a thickness of, for example, about 0.15 mm.
Reference numeral 13 denotes an adhesive for bonding the printing paper 12 to a target member for each application, and reference numeral 14 denotes a release paper protecting the adhesive and having a thickness of, for example, about 0.12 mm.

Reference numeral 15 denotes a slit for cutting the release paper 14, which is cut using a sharp cutter so that the printing paper 12 is not damaged. In this case, the cut edge is in a state where the cut release papers 14 are butted against each other. The slit 15 is orthogonal to the seal conveyance direction A across both side edges C and D near the leading edge B to be sent out in the seal conveyance direction A by the printer to be printed on the tag seal 11. In such a direction that the release paper 14 is cut.

FIG. 2 is a perspective view showing a second embodiment of the present invention. The tag seal 11 'has a similar slit 15' also provided on the rear edge F side. 1 and 2, the distance L from the edge B to the slit 15 (or the distance L from the edge F to the slit 15 ') is set to, for example, about 25 mm as described later.

Next, a printer to which the tag seals 11, 11 'are applied will be described. FIG. 3 is a side sectional view showing a paper feeding mechanism of the printer according to the present invention.

In FIG. 3, reference numeral 21 denotes a driving platen roller driven by a motor, and reference numeral 22 denotes a driven platen roller.
A guide 23 guides the printing paper toward the platen rollers 21 and 22. Reference numeral 24 denotes a print head, which is mounted on a carriage (not shown), is disposed near the platen rollers 21 and 22, and is configured to be movable in the axial direction of the platen rollers 21 and 22. 25 and 26 are guide rollers, respectively. A paper guide 27 is provided with a small head gap G between itself and the print head 24.

Printing paper (in this case, tag seal 11)
Is wound around a platen roller (drive platen roller 21) with the printing paper 12 on the outside and the release paper 14 on the inside, and then the other platen roller (the driven platen roller 2).
2) and the print head 24
Paper is fed toward the facing position (head gap G). The head gap G is at the same height as the highest value of the outer periphery of the driving platen roller 21 and
The pinching point 22 is set downstream from the uppermost point by a rotation angle θ so as to correspond to normal printing paper. Immediately after leaving the pinching point, the leading end of the leading edge is inclined slightly downward, and then curved slightly upward as the paper feed proceeds, so that the leading end is directed toward the head gap G. ing.

However, when the conventional tag seal 1 is fed as described above, the degree of curvature of the leading end side is increased, and the leading end side rises above the head gap. In the present invention, the lifting is reduced as much as possible so that the leading edge B is directed toward the head gap G.

Next, the tag seals 11 and 1 by the printer are used.
2 (in this case, the tag seal 11) will be described. FIG. 4 is an explanatory diagram showing a sheet feeding state according to the present invention.
In this figure, the same reference numerals are given to the same parts as those in FIG. 1 or FIG. In FIG. 4, when the tag seal 11 is fed by each of the platen rollers 21 and 22, the tag seal 11 is wound around the outer periphery of the drive platen roller 21.
At this time, especially around the slit 15, the outer printing paper 12 is stretched by the generation of a tensile force Fa, and the inner release paper 14 is compressed by the generation of a compression force Fb.

Since the release paper 14 has a slit 15 at a distance of L from the preceding edge B, the tensile force F
The return force a and the compressive force Fb act in a direction to bring the respective edges of the butted portion into contact with each other. Therefore, a part of each force Fa and Fb is absorbed, for example, the gap between the butting portions is slightly narrowed or one edge of the butting portion overlaps over the other edge. The distance L in the tag seals 11 and 11 'of FIG. 1 or 2 is set to about 25 mm so that a required top margin is secured, and according to the result of an experiment. By setting the distance L in this manner, the tag seal 11 ′ of FIG. 2 operates in the same manner as the tag seal 11 regardless of which of the edges B and F is fed first.

After the edge B of the tag seal 11 has passed the pinching point, on the released leading end, the leading end is moved upward by the return force of the tensile force Fa on the printing paper 12 and the compressive force Fb on the release paper 14. Although it is attempted to bend to incline, a part thereof is absorbed by the slit 15 as described above, so that the degree of bending is reduced, and the edge B becomes the head gap G as in the case of ordinary printing paper. The paper is fed while heading toward. Therefore, safe paper feeding becomes possible.

[0021]

According to the first aspect of the present invention, on the release paper of the print medium, which is formed by bonding the release paper to the print paper, between the both sides near the edge in the print medium transport direction by the printer, Since the slit formed by cutting the release paper is formed in the direction perpendicular to the print medium transport direction, when the print medium is wound around the roller, the paper path difference between the print paper and the release paper is absorbed, Safe feeding is possible without unusual bending of the leading edge where the winding is released and fed.

According to the second aspect of the present invention, the same slits as those in the first aspect are formed in the vicinity of both ends in the print medium transport direction, so that the print medium is transported ahead of any edge side. The same effect as in claim 1 can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a second embodiment of the present invention.

FIG. 3 is a side sectional view showing a sheet feeding mechanism of the printer according to the present invention.

FIG. 4 is an explanatory diagram illustrating a paper feeding state according to the present invention.

FIG. 5 is a perspective view schematically showing a conventional tag seal.

[Explanation of symbols]

 11, 11 'tag seal (print medium) 12 printing paper 13 adhesive 14 release paper 15, 15' slit 21 platen roller (drive platen roller) 22 platen roller (driven platen roller) 24 print head G head gap

Claims (2)

[Claims] 1. A printing medium in which a release paper is bonded to a printing paper, wherein the release paper extends in a direction orthogonal to the print medium transport direction across both side edges near an edge with respect to the print medium transport direction by the printer. And a slit formed by cutting the release paper. 2. The print medium according to claim 1, wherein the slit is formed near each of both end edges in the print medium transport direction.