JP2000309472A - Roll shape recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rolled sheet capable of fixing a sheet to a sheet pipe when starting winding a recording sheet on the sheet pipe and of removing the sheet from the sheet pipe with force, not more than the feeding force of a printer. SOLUTION: When winding of a roll sheet on a sheet pipe 1 is started using a double coated adhesive tape, a strongly adhesive portion 4b of the double coated adhesive tape is arranged on the side of the sheet pipe 1 and a weakly adhesive portion 4a is arranged at a tip of the roll sheet 2, whereby separation occurs between the rolled sheet tip 2, poor in adhesive force, and the weakly adhesive portion 4a of the double coated adhesive tape to leave the double coated adhesive tape in the sheet pipe 1 when the rolled sheet is stretched at a final stage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a roll-shaped recording medium in which a recording medium such as a printer is wound in a roll, and more particularly to a structure of winding a recording medium around a paper tube.

[0002]

2. Description of the Related Art Generally, paper used in printers and the like is roughly classified into cut paper cut to a standard size and long roll paper wound around a cylindrical core with a fixed width. Each is used properly depending on the purpose. Usually, cut paper is mainly used in small and medium-sized printers, and when printing large images that are difficult to handle with cut paper, wide roll paper is used in relatively large printers. . Particularly, in recent years, printing of high-quality and large-size images by an ink-jet printer has been obtained, and thus demand for roll paper that is easy to use has been increasing.

[0003] Normally, the roll paper is rolled by fixing the leading end of the paper to a pipe-shaped paper tube, winding the paper several times while applying a certain tension and slitting it to a certain width. Processed. When a roll paper is used in a printer, printing is performed while pulling out the roll paper by a paper feed roller of the printer.

However, since the end of the roll paper is fixed to the paper tube, if the roll paper is used up during printing, the paper is not fed even during printing, and the same portion of the roll paper is repeatedly printed for a long time. Will be done. As a result, in an ink jet printer, a large amount of ink may adversely affect various components of a machine including a printer head. In particular, a fatal defect often occurs in a printer head.

Therefore, before the roll paper is used up, it is necessary that the roll paper comes off the paper tube naturally. However, it is also a problem that the paper is not fixed at all to the paper tube. That is, if the paper is not fixed to the paper tube, the paper may be loosened. In this case, the paper tube idles, and the paper is not tensioned at the time of printing, thereby affecting the paper feeding accuracy and causing a serious defect in print quality.

Further, when the paper is loosened and the paper tube idles, it becomes impossible to rewind the loosened paper, and such roll paper becomes substantially unusable.

Further, in the work of starting the roll paper winding, if the paper tube and the paper are not fixed, the workability is poor. From this point, it is preferable that the paper tube and the paper are fixed.

As described above, at the start of winding of the roll paper wound around the paper core, the paper can be fixed to the paper core, and at the time of printing, the paper comes off the paper core with a force within the paper feeding force of the printer. It is necessary.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a roll paper characterized in that a roll paper (recording medium) wound in a roll shape is fixed to a paper tube, and particularly to a roll paper roll at the start of paper winding. Roll paper (recording medium) that can fix paper (recording medium) and that, when printing, roll paper (recording medium paper) comes off the paper tube with a force within the paper feeding force of the printer
The purpose is to provide.

[0010]

According to the present invention, in a roll-shaped recording medium formed by winding a recording medium around a paper tube, the leading end of the recording medium and the outer periphery of the paper tube are bonded with a double-sided adhesive tape. In this case, the peel strength between the paper tube and the adhesive tape is greater than the peel strength between the recording medium and the adhesive tape, and the peel strength between the recording medium and the adhesive tape is The recording medium and the adhesive tape are peeled off with a constant pulling force at the final stage, and the adhesive tape is left on the paper tube.
For example, using a double-sided adhesive tape having a strong adhesive surface and a weak adhesive surface, at the beginning of the roll paper winding, the strong adhesive side is placed on the paper tube side and the weak adhesive side is placed on the paper side At least, the paper tube and the paper are fixed, and in the final stage, the paper and the tape are peeled off with a constant pulling force, so that the tape remains in the paper core.

That is, the roll-shaped recording medium according to the present invention comprises: "In a roll-shaped recording medium formed by winding a recording medium around a paper tube, the leading end of the recording medium and the outer periphery of the paper tube are adhered on both sides. Affixed with a tape, the peel strength between the paper tube and the adhesive tape is greater than the peel strength between the recording medium and the adhesive tape, and the peel strength between the recording medium and the adhesive tape is A roll-shaped recording medium characterized in that the roll-shaped recording medium is bonded with a peeling strength such that the peeling strength between the sheets is smaller than the paper feeding force of the printer. "(Claim 1) And Further, the roll-shaped recording medium according to the present invention includes: "The peel strength between the recording medium and the adhesive tape is 0.05 to 0.5 kg." (Claim 2) The pressure-sensitive adhesive tape is a strong pressure-sensitive adhesive tape in which one surface is strongly tacky and the other surface is weakly tacky. "(Claim 3) Is a medium-to-medium pressure-sensitive adhesive tape composed of medium-adhesiveness. (Claim 4), "The adhesive tape is a medium-to-medium-pressured adhesive tape having one surface of medium-adhesion and the other surface of low-adhesion. "There is" (Claim 5), "The pressure-sensitive adhesive tape is a pressure-sensitive adhesive tape having the same adhesiveness on both sides" (Claim 6), "The adhesive tape bonding concave portion is provided on the outer periphery of the paper tube. (Invention 7), ・ A buffer layer is formed on the outer periphery of the paper tube (invention 8). It can be a constant matters.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the leading end of the winding of a recording medium and the outer periphery of a paper tube (if a coating layer is formed on the outer periphery of the paper tube) are adhered with a double-sided adhesive tape. When joining, the peel strength between the paper tube and the adhesive tape should be larger than the peel strength between the recording medium and the adhesive tape, the peeling between the recording medium and the adhesive tape It is characterized in that the recording paper is peeled off with a force smaller than the paper feeding force of the printer, whereby the recording medium can be fixed to the paper tube, and at the time of printing, within the paper feeding force of the printer. The recording medium can be released from the paper tube by force.

When the leading end of the recording medium and the outer periphery of the paper tube are bonded together with a double-sided adhesive tape, the peeling between the paper tube and the adhesive tape is less than the peel strength between the recording medium and the adhesive tape. In order to increase the strength, use a double-sided adhesive tape with different adhesiveness as the adhesive tape, with the strong adhesive side on the paper tube side and the weak adhesive side on the recording medium side. Depending on the adhesiveness of both sides of the double-sided adhesive tape (including the case where the adhesiveness of both sides is the same), the adhesive surface of the adhesive tape on the side to be bonded to the recording medium is released with release paper etc. To cover a part thereof, and to be smaller in the width direction of the roll than the adhesive surface on the side to be bonded to the paper tube;-as a material for forming the paper tube, is stronger against the double-sided adhesive tape than the material forming the recording medium. Choose one that shows tackiness, etc. Performed in combination. For example, when bonding the leading end of the recording medium and the outer periphery of the paper tube with a double-sided adhesive tape, a double-sided adhesive tape having a strongly adhesive surface and a weakly adhesive surface (the area of both adhesive surfaces is At the beginning of the winding of the roll-shaped recording medium, the strong adhesion side is arranged on the paper tube side and the weak adhesion side is arranged on the recording medium side, and the aim is achieved by fixing the paper tube and the recording medium. Can be obtained. Also, when bonding the leading end of the recording medium and the outer periphery of the paper tube with a double-sided adhesive tape,
Using a double-sided adhesive tape with the same adhesiveness on both sides, cover part of the adhesive surface on one side of the double-sided adhesive tape with release paper, etc. (in the width direction of the roll) to reduce the adhesive surface, and start winding the roll-shaped recording medium. , The adhesive surface of the other surface (the surface not covered with release paper) is disposed on the paper tube side, and the adhesive surface of one surface (the adhesive surface partially covered with release paper or the like) is disposed on the recording medium side. The desired characteristics can also be obtained by fixing the tube and the recording medium.

In order to make the peel strength between the recording medium and the adhesive tape smaller than the paper feeding force of the printer, the adhesive strength of the adhesive surface of the adhesive tape to be bonded to the recording medium and the width direction of the roll can be improved. Can be adjusted by appropriately selecting the size of the adhesive surface of the adhesive tape to be bonded to the recording medium, the material of the recording medium, the surface condition, etc., but the peeling strength between the recording medium and the adhesive tape is To the extent that the recording medium at the beginning of winding can be attached and wound efficiently, for example, in a printer using a recording medium having an A4 width,
In a printer using a recording medium having a width of about 0.1 kg and A2 or more, the setting may be about 0.5 kg. The peel strength was determined by fixing the roll paper core and the recording medium with adhesive tape.
The peeling force was measured when the recording medium was pulled perpendicularly to the paper tube from the state in which the recording medium was wound.

[0015] The adhesive tape used in the present invention includes: a strong and weak adhesive tape having one surface having strong adhesiveness and the other surface having low adhesiveness; and one surface having strong adhesiveness and the other surface having medium adhesiveness. Composed strong-medium pressure-sensitive adhesive tape, ・ Medium-low pressure-sensitive adhesive tape with one surface being medium-adhesive and the other surface being light-adhesive, The base material may be provided between the adhesive layers, or the base material may not be used. Here, the degree of adhesion relating to the adhesive properties of “strong adhesiveness”, “medium adhesiveness”, and “weak adhesiveness” usually means the extent used in the technical field of “adhesive tape”. , Strong adhesiveness means 900 g or more, medium adhesiveness 200 to 900 g, and weak adhesiveness 200 or less. The adhesive strength shown here is based on the measured value according to JIS-Z0237.

In the following, an embodiment in which a double-sided pressure-sensitive adhesive tape having a strongly-adhesive surface and a weakly-adhesive surface is used as the pressure-sensitive adhesive tape will be described in detail with reference to the drawings. The present invention is not limited by the following examples. FIG. 1 is a perspective view showing the appearance of a general roll paper, and FIG. 2 is a schematic configuration diagram showing a conventional general roll paper winding start configuration. This shows a state in which the tip 2 is fixed with the tape 3. This configuration has several disadvantages, as explained above.

FIG. 3 is a schematic structural view showing the state of the beginning of winding according to the present invention. The leading end 2 of the roll paper is adhered to the paper tube 1 via a double-sided adhesive tape 4. This double-layer double-sided adhesive tape 4 is different from a normal double-sided adhesive tape in that one side is composed of a weakly adhesive part 4a and the other side is composed of a strongly adhesive part 4b.
The strong adhesive portion 4b of the double-sided adhesive tape 4 is stuck on the side, and the weak adhesive portion 4a is stuck on the leading end portion 2 of the roll paper. In this state, when the roll paper is pulled, it peels off between the roll paper 2 having low adhesive strength and the weak adhesive portion 4a of the double-sided adhesive tape 4, and the double-layer double-sided adhesive tape 4 remains on the paper tube 1 side, It does not remain at the start of roll paper winding. In this way, printing can be performed to the end without causing trouble by wrapping the double-sided adhesive tape in the structure of the printer.

The basic elements of the present invention are, as can be seen from the above, the force by which the printer pulls the roll paper and the paper tube 1.
It is needless to say that there are three basic forces, namely, the adhesive strength between the double-sided double-sided adhesive tape 4 and the two-layered double-sided adhesive tape 4, and the following based on the conclusions obtained in the test. This will be described in more detail.

The paper feeding of the printer is generally performed by a rubber roll, but the force applied to the paper at the time of this paper feeding, that is, the paper feeding force varies depending on the type and size of the printer. Since the paper feeding power of the printer is relatively large even if it is small, the adhesive strength between the roll paper 2 and the double-sided double-sided adhesive tape 4, that is, the peel strength of the roll paper, except for the special one, is set to the paper tube side. There is no need to use them separately on the paper side. Normally,
Even printers of A4 to A2 width or less have a paper feeding power of 1 kg or more, and large plotters and the like have characteristics of several kg. It may be set as much as possible, that is, about 0.2 kg to 0.5 kg.

However, in order to regulate the peel strength of the roll paper at the beginning of winding with the adhesive tape 4, it is necessary to sufficiently understand the adhesive property between the weak adhesive portion 4a and the back surface 2b of the roll paper in FIG. .

That is, even if the tape has the same weak adhesive portion 4a, the adhesive strength between the roll paper 2 and the double-sided double-sided adhesive tape 4 depends on the adhesive property of the roll paper back surface 2b to be affixed. Become stronger or weaker. Therefore, when handling various types of roll paper, it is necessary to prepare a double-sided adhesive tape having an adhesive portion having a different adhesiveness and confirm the correlation with the roll paper.

Further, it is needless to say that the peeling strength varies depending on the area of the roll paper 2 and the double-layer double-sided adhesive tape 4 to be bonded. It is sufficient to arrange them at one location in the center or one location on each side as shown in FIG. The location of the two-layer double-sided adhesive tape 4 is determined by determining the peel strength of the roll paper, the adhesiveness of the adhesive portion 4a, the number of pieces to be attached, and the area to be attached by a test.

On the other hand, the adhesive strength between the paper tube 1 and the double-sided double-sided adhesive tape 4 is obviously larger than the adhesive strength between the roll paper 2 and the double-layered double-sided adhesive tape 4, but it should be as strong as possible. desirable. Normally, by using a strong adhesive type adhesive material, the adhesive strength can be obtained such that the surface of the paper tube is broken.

Next, the structure of the double-layered double-sided pressure-sensitive adhesive tape 4 basically has only to be weakly adhered on one side and strongly adhered on the other side, and there is no particular limitation on the structure. FIG. 5 shows an example of a double-layered double-sided adhesive tape 4, in which a weak adhesive material is applied to one side of a base material 4c such as paper or plastic, and a weak adhesive portion 4 is formed.
a, and apply a strong adhesive material to the other surface to form a strong adhesive portion 4b.
Is formed, and the surface of each adhesive portion is covered with a release paper 4d.

Further, in the practice of the present invention, it should be particularly noted that the step difference portion 5 of the paper is provided after the second winding of the roll paper according to the thickness of the roll at the start portion of the roll paper.
And adversely affect print quality. It should be noted that the step deformation 5 extends for several tens of turns. In particular, this tendency is apt to occur in glossy paper, so that it is necessary to take measures as necessary. In the present invention, since the thickness of the two-layer double-sided adhesive tape 4 is further added to the thickness of the roll paper, it can be solved by taking the following measures if necessary.

That is, as shown in FIG. 7, a concave portion 1a is provided in the width direction of the outer circumference of the paper tube 1, and the double-layer double-sided adhesive tape 4 and the leading end of the roll paper 2 are disposed in that portion. Deformation can be prevented. Although not shown, a similar effect can be obtained by wrapping a cushioning material of a foamed styrene sheet having a thickness of about 2 mm around the outer periphery of the paper tube 1 and wrapping the roll paper around a paper tube configured to eliminate a step. Can be done.

[0027]

EXAMPLES The present invention will be described specifically with reference to examples of the present invention, but the present invention is not limited to the following examples. The paper tube 1 is a spiral wound paper tube made of generally available kraft paper having an inner diameter of 2 inches, a length of 36 inches, and a roll paper 2.
The ink-jet paper, whose back surface is slightly cast and has a higher degree of smoothness, is used, and has a width of 36 inches, the same as the paper tube 1, and a length of about 20 m.

The two-layer double-sided pressure-sensitive adhesive tape 4 is based on an acrylic-based pressure-sensitive adhesive material, and is configured to have generally-known low-adhesion levels and high-adhesion levels. This tape was cut into a width of 5 mm and a length of 50 mm, and as shown in FIG.
The strongly adhesive side was stuck to two places in total. Next, the roll paper 2 was fixed to the adhesive tape in accordance with the width (length) of the paper tube 1, wound first with a weak tension, and wound around 20 m while being pulled relatively strongly from the third winding.

After standing for about one week, and when the adhesive strength was stabilized, the roll paper 2 was set on a large plotter and printed, and the last roll paper 2 was peeled off. Was transported without any effect.

The adhesiveness of the double-layered double-sided adhesive tape 4 used in this example is such that the strong adhesive portion 4b is 800 g under the condition of 25 mm width and stainless steel by the 180 ° peel method, Part 4a weighed 20 to 30 g in the same manner.

[0031]

As described above, the present invention uses the double-layered double-sided pressure-sensitive adhesive tape having strong and low tackiness at the beginning of winding of roll paper, thereby enabling the final step of printing on roll paper by a printer. The roll paper naturally peels from the paper core due to the paper transport force of the printer, and printing can be performed to the end.Since the roll paper naturally peels from the paper core, printing on the same place on the paper for a long time is eliminated. It is possible to eliminate the adverse effect of the large amount of ink on various components of the machine including the printer head, and it is extremely easy to fix the roll paper at the start of winding, and to streamline the roll manufacturing operation. It produces many effects.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a conventional general roll paper structure.

FIG. 2 is a partial cross-sectional view showing a state of a sheet at a winding start portion of a conventional general roll paper structure.

FIG. 3 is a partial cross-sectional view illustrating a state of a sheet at a winding start portion of the roll sheet structure of the present invention.

FIG. 4 is a perspective view showing a state in which winding of the roll paper of the present invention is started.

FIG. 5 is a cross-sectional view showing a configuration of the strong and weak adhesive tape 4 of the present invention.

FIG. 6 is a partial cross-sectional model diagram showing a state of deformation after the second winding due to the thickness of roll paper.

FIG. 7 is a partial cross-sectional view showing a state in which a concave portion 1a is provided in the paper tube of the present invention.

[Explanation of symbols]

 Reference Signs List 1 roll paper core 1a paper core recess 2 roll paper winding start tip 2a roll paper front surface 2b roll paper back surface 3 adhesive tape 4 double-layer double-sided adhesive tape 4a weak adhesive part 4b strong adhesive part 4 4c base material 4d release paper 5 deformation Department

Claims (8)

[Claims] In a roll-shaped recording medium formed by winding a recording medium around a paper tube, the leading end of the recording medium and the outer periphery of the paper tube are stuck together with a double-sided adhesive tape. The peel strength between the paper tube and the adhesive tape is greater than the peel strength between the adhesive tape and the peel strength between the recording medium and the adhesive tape is greater than the paper feeding force of the printer. A roll-shaped recording medium which is bonded with a peeling strength such that the roll-shaped recording medium can be peeled off with a small force. 2. The roll-shaped recording medium according to claim 1, wherein the peeling strength between the recording medium and the adhesive tape is 0.05 to 0.5 kg. 3. The adhesive tape according to claim 1, wherein one side of the adhesive tape has strong adhesiveness,
The roll-shaped recording medium according to claim 1, wherein the other surface is a weakly-adhesive tape configured to be weakly-adhesive. 4. The pressure-sensitive adhesive tape according to claim 1, wherein one side has strong adhesiveness,
The roll-shaped recording medium according to claim 1, wherein the other surface is a strong-medium pressure-sensitive adhesive tape having a medium-pressure property. 5. The pressure-sensitive adhesive tape according to claim 1, wherein one side has a medium tackiness,
3. The roll-shaped recording medium according to claim 1, wherein the other surface is a medium weak adhesive tape having a weak adhesive property. 6. The roll-shaped recording medium according to claim 1, wherein the pressure-sensitive adhesive tape is a pressure-sensitive adhesive tape having the same tackiness on both sides. 7. The roll-shaped recording medium according to claim 1, wherein an adhesive tape bonding concave portion is provided on an outer periphery of the paper tube. 8. The roll-shaped recording medium according to claim 1, wherein a buffer layer is formed on the outer periphery of the paper tube.