JP4346205B2 - Thermal roll paper and method for preventing thermal roll paper from loosening - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thermal roll paper used as a printing medium for various devices such as a facsimile, a register, and a handy terminal equipped with a thermal printer.
[0002]
[Prior art]
Thermal roll paper, which is a roll of long thermal paper with a thermosensitive coloring layer formed on its surface, is pulled out from the outer periphery in a state of being mounted on the holding part of various devices equipped with a thermal printer. Then, printing is performed on the thermosensitive coloring layer by the thermal head that is supplied to the printing unit and disposed in the printing unit.
[0003]
[Problems to be solved by the invention]
In such a state of use, the thermal roll paper that is simply wound in a roll shape is likely to loosen with time, and the supply to the printing unit is not possible due to this loosening. There is a problem that printing becomes unstable and causes printing problems such as uneven printing and wrinkles.
[0004]
In addition, the product at the time of shipment is designed to prevent loosening until use by using a sticker attached to the beginning of the thermal paper. Problems such as breakage and adhesive residue are likely to occur, and when such problems occur, there is a problem that the outermost peripheral portion must be cut out over a predetermined length and discarded.
[0005]
On the other hand, in the roll paper for printing, a configuration capable of preventing winding looseness is proposed in Japanese Utility Model Publication No. 53-49624, Japanese Utility Model Publication No. 7-42766, and the like. The former is intended to prevent the roll paper from loosening by applying glue to the roll end face of the roll paper for the discharge printer, and the latter is particularly applied to the roll end face of the coreless roll paper that does not use the core. By applying glue in a single line so that it crosses the side surface at a position slightly off the center, the roll paper is fixed in a rolled state except for the vicinity of the center, and loosened around the center. It is intended to prevent. Thus, all of these are those in which glue is applied to the end face of the roll. For this reason, the apparatus is soiled, and it is easy to cause a printing trouble due to the glue wrinkles adhering to the printer head, and there is still room for improvement.
[0006]
In addition, as described above, when glue is applied to the roll end face, the applied glue penetrates not only to the roll end face but also to the side edge, so that the thermal roll paper made of thermal paper having a thermosensitive coloring layer on the surface is used. When applied, there is a problem in that depending on the type of paste, a chemical reaction occurs and the thermosensitive coloring layer changes color.
[0007]
It is an object of the present invention to provide a thermal roll paper and a method for preventing the thermal roll paper from loosening, which can solve the conventional problems.
[0008]
[Means for Solving the Problems]
The present invention is thermal paper consisting comprises a thermosensitive coloring layer containing a water-soluble resin binder on the surface of the paper substrate b - in a thermal roll paper wound in Le form, of one roll end face, the entire surface thereof or The water-soluble resin binder is exuded by applying water or a water-soluble resin solution to a required portion, and is provided with a winding loosening prevention end portion in which the thermal paper is temporarily joined at the end face, The thermal roll paper is characterized in that a strip-shaped permeation blocking layer made of water-repellent ink is formed along the longitudinal direction adjacent to the inner side of the winding loosening prevention end at the edge .
[0009]
Here, the water-soluble resin binder contained in the thermosensitive coloring layer is a powdery component composed of a coloring component of the thermosensitive coloring layer, that is, an electron-donating dye, and an acidic substance that is colored by contact reaction with the dye. It is used to bind the coloring component and fix it on the surface of the paper substrate. By wetting the thermal coloring layer through a predetermined means, the water-soluble resin binder is leached from the thermal coloring layer. Can be made.
[0010]
In such a configuration, the thermal roll paper does not loosen due to its winding state being held by the winding loosening prevention end portion. As a result, it is possible to prevent loosening before use as well as during use, so that the conventional stopper seal that has been attached to the product at the time of shipment becomes unnecessary, and attachment at the time of removal of the stopper seal is eliminated. Problems such as broken parts and adhesive residue are eliminated. Moreover, since the water-soluble resin binder contained in the heat-sensitive color developing layer exudes and the heat-sensitive paper is temporarily bonded to each other, the winding loosening prevention end portion is a defect of the configuration using the conventional glue. No glue wrinkles occur, and further no color change of the thermosensitive coloring layer due to chemical reaction occurs.
[0011]
In the above configuration, the temporary bonding between the thermal papers may be reinforced by the water-soluble resin supplied to the end portion. Thereby, temporary joining force can be raised according to the paper quality of a paper base material.
[0012]
Further, in the above configuration, the side edges of the thermal paper, and adjacent to the inner side of the loosening preventing end portion, a strip permeation blocking layer formed of the water repellent ink, so as to form along the longitudinal direction Yes. This belt-like permeation blocking layer can be formed by solid-printing a water-repellent ink in a belt shape. Thereby, in order to wet the thermosensitive coloring layer, when water or a water-soluble resin solution is applied to the end surface of the roll, an impregnation region of the water or the water-soluble resin solution is defined, and the winding loosening prevention end portion is set in a predetermined manner. It can be accurately formed at the position.
[0013]
Furthermore, in the above-described configuration, a configuration may be proposed in which a band-shaped permeation regulating layer made of water-repellent ink is formed on the side edge portion of the thermal paper along the longitudinal direction. This belt-like penetration regulating layer can be formed by halftone printing a water-repellent ink in a belt shape. Thus, in order to wet the thermosensitive coloring layer, when water or a water-soluble resin solution is applied to the end face of the roll, the printing mode of the halftone printing, that is, the number of halftone lines and the compositional area ratio of the halftone dots are set. By appropriately setting, the impregnation amount of water or a water-soluble resin solution is defined, and the temporary bonding force between the thermal papers can be adjusted.
[0014]
The present invention also relates to a thermal roll paper in which a thermal paper provided with a thermosensitive coloring layer containing a water-soluble resin binder on the surface of a paper substrate is wound in a roll shape, and at least one of the roll end faces, A method for preventing loosening of a thermal roll paper, wherein water is applied to the entire surface or a required portion and then dried.
[0015]
Thus, by applying water to the roll end face of the thermal roll paper, the water penetrates from the roll end face to the side edge portion of the thermal paper, and the heat-sensitive color developing layer on the side edge portion is wetted to form a water-soluble resin binder. Exudates. Then, by drying in this state, blocking occurs in which the thermal papers are weakly bonded to each other by the exuded water-soluble resin binder, thereby forming a winding loosening prevention end portion in which the thermal papers are temporarily joined at the side edges. can do. And this winding looseness prevention edge part can prevent winding looseness of a thermal roll paper.
[0016]
The present invention also relates to a thermal roll paper in which a thermal paper provided with a thermosensitive coloring layer containing a water-soluble resin binder on the surface of a paper substrate is wound in a roll shape, and at least one of the roll end faces, A method for preventing loosening of a thermal roll paper, characterized in that a water-soluble resin solution is applied to the entire surface or a required portion and then dried.
[0017]
Here, as the water-soluble resin solution applied to the roll end face, a solution in which a water-soluble resin such as polyvinyl alcohol or carboxymethyl cellulose is mixed with water at a ratio of about 2 to 10% is used. This water-soluble resin is the same as the water-soluble resin binder contained in the thermosensitive coloring layer.
[0018]
In such a configuration, by applying a water-soluble resin solution to the end surface of the roll, the solution penetrates from the end surface of the roll to the side edge of the thermal paper, and the heat-sensitive color developing layer is wetted by the water in the solution, so that the water-soluble resin. Binder oozes out. Then, by drying in this state, blocking occurs in which the thermal paper is weakly bonded to each other by the exuded water-soluble resin binder and the water-soluble resin of the applied solution. A joined loosening prevention end can be formed. Therefore, in this configuration, the temporary bonding between the thermal papers can be reinforced by the water-soluble resin supplied by application of the water-soluble resin solution.
[0019]
Further, in the above-described configuration, a belt-like permeation blocking layer made of a water-repellent ink that prescribes a liquid-impregnated region is formed on the side edge of the thermal paper in advance along the longitudinal direction, and this is wound. You may make it apply | coat a liquid to the roll end surface of thermal roll paper. Thereby, the impregnation area | region in the side edge part of the liquid apply | coated to a roll end surface, ie, water or a water-soluble resin solution, is prescribed | regulated, and it becomes possible to form a winding loosening prevention edge part correctly in a predetermined position.
[0020]
Further, in the above-described configuration, a belt-like penetration regulating layer made of water-repellent ink that regulates the liquid impregnation amount is formed in advance along the longitudinal direction on the side edge portion of the thermal paper, and this is wound. You may make it apply | coat a liquid to the roll end surface of thermal roll paper. As a result, the amount of impregnation at the side edge of the liquid applied to the roll end face, that is, water or a water-soluble resin solution, is defined, and the temporary bonding force between the thermal papers can be adjusted.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
The first embodiment of the present invention will be described below with reference to FIGS. In the thermal roll paper 1, a thermal paper 4 comprising a thermal coloring layer 3 containing a water-soluble resin binder on the surface of a paper substrate 2 is wound in a roll shape, and the thermal end of the roll is heated. A winding loosening prevention end portion 5 in which the papers are temporarily joined is formed. The thermal roll paper 1 is a coreless roll paper wound in a roll shape without using a core.
[0022]
The thermosensitive coloring layer 3 is obtained by applying a powdery coloring component composed of an electron-donating dye and an acidic substance that is colored by contact with the dye to the paper base material 2 together with a water-soluble resin binder. In general, when a heat is applied, a colorless or light-colored electron-donating dye reacts with an acidic substance to develop a color. The water-soluble resin binder contained in the thermosensitive coloring layer 3 is made of a water-soluble resin such as polyvinyl alcohol or carboxymethyl cellulose, and binds powdery coloring components and fixes them to the surface of the paper substrate 2. Therefore, when the thermosensitive coloring layer 3 is wetted, the water-soluble resin binder oozes out from the thermosensitive coloring layer 3.
[0023]
The winding loosening prevention end portion 5 is formed by applying water to both end faces or one roll end face of the thermal roll paper 1 and drying it. Here, the water applied to the roll end surface may be applied to the entire surface of the roll end surface, or may be applied to a required portion along the diameter direction in a strip shape. Then, when water is applied to the roll end surface of the thermal roll paper 1 in this way, the water penetrates from the roll end surface to the side edge portion of the thermal paper 4, and the thermal coloring layer 3 at the side edge portion is wetted, A water-soluble resin binder will ooze out. Then, by drying in this state, blocking is caused in which the thermal papers 4 are weakly bonded to each other by the exuded water-soluble resin binder, whereby the thermal papers 4 are temporarily joined to each other at the side edges to prevent winding looseness. The part 5 is formed.
[0024]
Further, as described above, instead of applying water to the roll end face, the winding loosening prevention end portion 5 may be formed by applying a water-soluble resin solution and then drying it. This water-soluble resin solution is a solution in which a water-soluble resin such as polyvinyl alcohol and carboxymethyl cellulose is mixed with water at a ratio of about 2 to 10%, preferably about 3 to 4%. The same water-soluble resin as the contained water-soluble resin binder can be suitably used. Then, by applying the water-soluble resin solution to the roll end surface of the thermal roll paper 1 in this way, the solution penetrates into the side edge portion of the thermal paper 4 from the roll end surface, and the thermal coloring layer 3 is formed by the water in the solution. Will become wet and the water-soluble resin binder will exude. And by drying in this state, the water-soluble resin of the applied solution is added to the exuded water-soluble resin binder, and the heat-sensitive paper 4 is weakly bonded to each other by the resin solute whose strength is increased. Thus, the thermal paper 4 is temporarily joined to each other at the side edge portion to form the winding loosening prevention end portion 5. Therefore, in this configuration, the water-soluble resin can be supplied by applying the water-soluble resin solution to reinforce the temporary bonding between the thermal papers 4.
[0025]
In such a configuration, the thermal roll paper 1 is not wound loosely because the winding state is held by the winding loosening prevention end portion 5 formed at the end of the roll. Further, since the thermal papers 4 are merely temporarily joined together by blocking weak adhesion, they can be smoothly peeled off from the outer peripheral portion in use. In addition, since it is possible to prevent winding looseness before use, the conventional stopper seal that has been attached to the product at the time of shipment is no longer necessary. There is no problem. Further, the winding loosening prevention end portion 5 is temporarily connected to the thermal paper 4 by the water-soluble resin binder that has oozed from the thermosensitive coloring layer 3 or the water-soluble resin binder and the water-soluble resin supplied by applying the water-soluble resin solution. Since they are joined together, there is no occurrence of a glue crease as in the prior art, and further no discoloration of the thermosensitive coloring layer 3 due to a chemical reaction occurs.
[0026]
FIG. 3 shows a second embodiment. In this embodiment, the water-repellent ink is formed in a strip shape along the longitudinal direction at the side edge portion of the thermal paper 4 adjacent to the inner side of the winding loosening prevention end portion 5. The belt-like permeation blocking layer 6 is formed by solid printing. As this water-repellent ink, a transparent water-repellent ink such as heat-resistant ink, release OP varnish, varnish, and medium can be suitably used. The belt-like permeation blocking layer 6 made of this water-repellent ink is formed in advance on the side edge portion of the thermal paper 4, and the roll end surface of the thermal roll paper 1 wound with this is water or water-soluble as described above. By applying a liquid such as a resin solution, the loosening prevention end portion 5 is formed.
[0027]
In this way, by forming the belt-like permeation blocking layer 6 in advance on the side edge portion of the thermal paper 4, it is possible to define a liquid impregnation region such as water or a water-soluble resin solution applied to the roll end surface. Thus, it becomes possible to accurately form the winding loosening prevention end portion 5 at a predetermined position.
[0028]
FIG. 4 shows a third embodiment. In this embodiment, the band-shaped permeation regulating layer 7 is formed on the side edge of the thermal paper 4 by halftone dot printing of the water-repellent ink along the longitudinal direction. Formed. And the strip | belt-shaped penetration regulation layer 7 which consists of the dot printing of this water-repellent ink is previously formed in the side edge part of the thermal paper 4, and the above-mentioned on the roll end surface of the thermal roll paper 1 which wound this Thus, the winding loosening prevention end portion 5 is formed by applying a liquid such as water or a water-soluble resin solution.
[0029]
In such a configuration, the printing mode of halftone printing for forming the belt-like permeation regulating layer 7, that is, water or water-solubility applied to the roll end face by appropriately setting the number of halftone lines and the compositional area ratio of the halftone dots. The amount of impregnation of a liquid such as a resin solution can be defined, whereby the temporary bonding force between the thermal papers 4 can be adjusted.
[0030]
In the second embodiment and the third embodiment, a state in which the strip permeation blocking layer 6 and the strip permeation regulating layer 7 are formed on the surface of the thermal paper 4 is shown in the drawings. The blocking layer 6 and the belt-like penetration regulating layer 7 may be formed on the back surface of the thermal paper 4. It is also possible to simultaneously form the strip permeation blocking layer 6 and the strip permeation regulating layer 7 on the side edge of the thermal paper 4. In each embodiment, the coreless roll paper not using the core is illustrated, but the present invention can also be applied to a general thermal roll paper in which the thermal paper 4 is wound around a cylindrical core. .
[0031]
【The invention's effect】
As described above, the present invention relates to a thermal roll paper in which a thermal paper having a thermal coloring layer containing a water-soluble resin binder on the surface of a paper substrate is wound in a roll shape. Since water is applied to the entire end surface or a required portion, the water-soluble resin binder is exuded, and then dried, so that the thermal paper is temporarily joined to form an end portion that prevents winding looseness. The winding state of the thermal roll paper is maintained by the winding loosening prevention end portion, and winding loosening does not occur. This eliminates the need for a conventional stopper seal that has been adhered to the product at the time of shipment, and eliminates problems such as breakage of the adhered portion and adhesive residue at the time of removal of the stopper seal. In addition, the winding loosening prevention end part is temporarily bonded between the thermal papers by the water-soluble resin binder that exudes from the thermal coloring layer, so that the conventional adhesive wrinkles do not occur when used. Furthermore, no discoloration of the thermosensitive coloring layer due to a chemical reaction with the glue occurs.
[0032]
In addition, by applying a water-soluble resin solution instead of the water to the roll end surface, the water-soluble resin of the applied solution is supplied to the exuded water-soluble resin binder, and the temporary bonding between the thermal papers is reinforced. . Thereby, temporary joining force can be raised according to the paper quality of a paper base material.
[0033]
Furthermore, a belt-like permeation blocking layer made of water-repellent ink is formed in advance along the longitudinal direction on the side edge of the thermal paper, adjacent to the inside of the winding loosening prevention edge, on the roll end face. A region impregnated with a liquid such as water or a water-soluble resin solution to be applied can be defined, whereby the winding loosening prevention end can be accurately formed at a predetermined position.
[0034]
Further, a liquid such as water or a water-soluble resin solution applied to the end face of the roll is prepared by previously forming a strip-shaped penetration regulating layer made of water-repellent ink on the side edge of the thermal paper along the longitudinal direction. Thus, there is an excellent effect that the temporary bonding force between the thermal papers can be adjusted.
[Brief description of the drawings]
FIG. 1 is a perspective view of a thermal roll paper according to a first embodiment.
FIG. 2 is a longitudinal sectional view of a thermal paper constituting the thermal roll paper of the above.
FIG. 3 is a perspective view of a thermal roll paper according to a second embodiment.
FIG. 4 is a perspective view of a thermal roll paper according to a third embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Thermal roll paper 2 Paper base material 3 Thermosensitive coloring layer 4 Thermal paper 5 Winding loosening prevention edge part 6 Strip | penetration penetration blocking layer 7 Strip | penetration penetration regulation layer

Claims (4)

In a thermal roll paper in which a thermal paper having a thermal coloring layer containing a water-soluble resin binder on the surface of a paper substrate is wound in a roll shape,
One end face of one roll is coated with water or a water-soluble resin solution on the entire surface or a required portion thereof, and the water- soluble resin binder oozes out, and the thermal paper is temporarily joined at the end face to prevent loosening of winding. And a strip-shaped permeation blocking layer made of water-repellent ink is formed along the longitudinal direction at the side edge of the thermal paper, adjacent to the inside of the winding loosening prevention end. Thermal roll paper. In a thermal roll paper in which a thermal paper having a thermal coloring layer containing a water-soluble resin binder on the surface of a paper substrate is wound in a roll shape,
One end face of one roll is coated with water or a water-soluble resin solution on the entire surface or a required portion thereof, and the water-soluble resin binder oozes out, and the thermal paper is temporarily joined at the end face to prevent loosening of winding. A thermal roll paper characterized in that a belt-like penetration regulating layer made of water-repellent ink is formed along the longitudinal direction at the side edge of the thermal paper. In a thermal roll paper in which a thermal paper having a thermal coloring layer containing a water-soluble resin binder on the surface of a paper substrate is wound in a roll shape,
  A roll end face of a thermal roll paper in which a belt-like permeation blocking layer made of a water-repellent ink that prescribes a liquid impregnation area is formed in advance along the longitudinal direction on the side edge of the thermal paper. A method of preventing thermal roll paper from loosening, wherein water or a water-soluble resin solution is applied to the entire surface or a required portion of the paper and then dried. In a thermal roll paper in which a thermal paper having a thermal coloring layer containing a water-soluble resin binder on the surface of a paper substrate is wound in a roll shape,
  A roll end surface of a thermal roll paper in which a belt-like permeation regulating layer made of a water-repellent ink that regulates the amount of liquid impregnation is previously formed on the side edge portion of the thermal paper along the longitudinal direction, and this is wound. A method of preventing thermal roll paper from loosening, wherein water or a water-soluble resin solution is applied to the entire surface or a required portion of the paper and then dried.

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