Coreless roll member, coreless roll paper sheet, and method of setting coreless roll paper sheet

Abstract

To allow for smoothly drawing a coreless roll paper sheet set to a printer while keeping a shape thereof.SOLUTION: A sheet roll 3 constituted by winding a belt-like sheet body s longer than a circumference of a sectional circle of a center hole 2 in a direction opposite to a winding direction of a long paper sheet 1 is inserted into the center hole 2 of a coreless roll body R formed with the round-columnar center hole 2, that is obtained by winding the belt-like printer long paper sheet 1 to be attached thereto.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a member for coreless roll paper, a coreless roll paper, and a method for setting the same. [Background technology]

[0002] Many roll paper used in printers has a cardboard core in the middle, but in recent years, the use of coreless roll paper, which does not have a cardboard core, has been considered in order to reduce manufacturing costs and waste. In coreless roll paper, which does not have a paper tube, the inner circumference of the center hole is formed by the beginning of the winding of the long paper. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 4-20479 [Patent Document 2] JP 2010-13217 A Summary of the Invention [Problem to be solved by the invention]

[0004] Like ordinary roll paper, the above-mentioned coreless roll paper is loaded into a storage compartment of a printer and used. When the long paper is pulled out, the coreless roll body rotates in the storage compartment of the printer. However, when the printer shaft is inserted into the center hole of the coreless roll paper, the base end of the long paper can become wrapped around the shaft inside the center hole, making it impossible to pull out the paper.

[0005] In addition, in a housing unit that supports the outer circumference of the coreless roll body and rolls it without using a shaft, the outer shape of the coreless roll body as well as the center hole can become deformed due to vibration during use. If the coreless roll body deforms and its cross-sectional shape is no longer circular, it becomes impossible to pull out the paper smoothly. For this reason, printers equipped with a special jig for coreless roll paper have been considered (see Patent Document 2).

[0006] An object of the present invention is to provide a coreless roll member, coreless roll paper, and a method for setting coreless roll paper that enable long sheets of paper to be pulled out stably and smoothly when stored in a printer and used. [Means for solving the problem]

[0007] The coreless roll member of the first invention is a coreless roll member that is attached to a coreless roll body that is attached to a printing paper storage section of a printer, and around which a strip-shaped long sheet of paper for a printer is wound to form a cylindrical central hole, and a strip-shaped sheet body that is longer than the circumference of the cross-sectional circle of the central hole is wound and attached within the central hole.

[0008] In a second aspect of the present invention, the printer includes a roll paper support shaft in the storage section that is inserted into the central hole, and the sheet body is wound in a direction opposite to the winding direction of the long paper around the coreless roll body.

[0009] In a third aspect of the present invention, the sheet body has instructions on how to roll it.

[0010] In a fourth aspect of the present invention, the sheet body is made of a resin sheet having a thickness of 0.2 mm or more.

[0011] The coreless roll paper of the fifth invention comprises a coreless roll body around which a strip-shaped long printer paper is wound to form a cylindrical central hole and which is stored in the printer's printing paper storage section, and a coreless roll member around which a strip-shaped sheet body longer than the circumference of the cross-sectional circle of the central hole is wound and attached within the central hole.

[0012] The sixth invention's method for setting coreless roll paper includes an insertion process for inserting a sheet roll having a strip-shaped sheet body longer than the circumference of the cross-sectional circle of a coreless roll body around which a strip-shaped long printer paper is wound to form a cylindrical central hole, and an installation process for mounting the coreless roll body on a shaft for supporting roll paper in the printer, wherein in the insertion process, the sheet body is wound in the opposite direction to the winding direction of the long paper around the coreless roll body. Effect of the Invention

[0013] According to the first aspect of the present invention, the sheet member expands in diameter due to its rigidity and adheres closely to the inner circumference of the center hole. This prevents fraying of the long paper at the center hole and deformation of the center hole. Since the shape of the center hole can be maintained, the shape of the entire coreless roll body can also be maintained. Therefore, even if the printer is not equipped with a special jig, the long paper can be stably pulled out from the coreless roll body set in the printer. In other words, the range of applications for coreless roll paper can be expanded.

[0014] According to the second invention, since the sheet member is wound in the opposite direction to the long paper, the friction between the shaft inserted into the central hole and the sheet member causes the rotational force in the direction of pulling out the paper to act as a force in the direction of expanding the diameter of the sheet member, more reliably preventing the diameter of the central hole from shrinking. This maintains a gap between the shaft inserted into the center hole, ensuring smooth rotation.

[0015] According to the third invention, the appropriate way to roll up the sheet body can be seen at a glance.

[0016] According to the fourth aspect of the present invention, the sheet body has sufficient rigidity, and the coreless roll member is brought into close contact with the central hole of the coreless roll body, thereby preventing the diameter of the central hole from decreasing.

[0017] According to the fifth aspect of the present invention, it is possible to provide coreless roll paper that can be set in a printer and used without any problems.

[0018] According to the sixth aspect of the present invention, the coreless roll paper can be set in the printer so that the long paper to be printed can be smoothly pulled out. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of a coreless roll paper according to an embodiment. [Diagram 2] FIG. 2 is a side view of the member for a coreless roll according to the embodiment. [Diagram 3] FIG. 3 is a plan view of a sheet body constituting the coreless roll member of the embodiment. [Figure 4] FIG. 4 is a perspective view of a printer housing in which the coreless roll paper of the embodiment is set. [Diagram 5] FIG. 5 is a schematic diagram of the coreless roll paper of the embodiment set on the shaft of the printer. [Figure 6] FIG. 6 is a schematic diagram of a conventional coreless roll of paper set on a shaft of a printer. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] [Embodiment] An embodiment of the present invention will be described below. Fig. 1 is a perspective view of a coreless roll paper of an embodiment. Fig. 2 is a side view of the coreless roll member of the embodiment, and Fig. 3 is a plan view of a sheet body constituting the coreless roll member. Fig. 4 is a perspective view of a printer storage section in which the coreless roll paper of the embodiment is set, and Fig. 5 is a schematic diagram of the coreless roll paper of the embodiment set on the shaft of the printer.

[0021] As shown in Figure 1, the coreless roll paper of this embodiment consists of a coreless roll body R (hereinafter referred to as the "roll body R") around which a long piece of paper 1 for printing is wound, and a sheet roll 3, which is a coreless member, inserted into the central hole 2 of the coreless roll body R. The sheet roll 3 shown in Figure 2 is a rectangular resin sheet body s as shown in Figure 3 that is wound into a cylindrical shape, and when inserted into the central hole 2 of the roll body R, the winding direction of the sheet is opposite to the winding direction of the paper 1 of the roll body R.

[0022] The sheet body s is a band-shaped sheet made of resin such as polypropylene with a thickness of about 0.25 [mm]. The length L of the sheet body s is longer than the circumference of the center hole 2 of the roll body R, for example, 1.5 times the circumference of the cross-sectional circle of the center hole 2, and the width W2 is the axial length of the roll body R, i.e., equal to the width W1 of the long paper 1. Since the sheet body s has a suitable rigidity, the sheet roll 3 tends to expand into a plate shape and cannot maintain its natural cylindrical shape when not inserted into the central hole 2 of the roll body R.

[0023] The sheet roll 3 formed as shown in Fig. 2 is inserted into the central hole 2 to form the roll body R shown in Fig. 1. This roll body R is the coreless roll paper of the present invention. When inserting the sheet roll 3 into the central hole 2, if the sheet body s is wound so as to be thinner than the inner diameter of the central hole 2, it can be easily inserted into the central hole 2. When the sheet roll 3 inserted into the central hole 2 is released, it expands due to the rigidity of the sheet body s and comes into close contact with the inner circumference of the central hole 2.

[0024] [Actions and Effects] As described above, the roll body R in which the sheet roll 3 is in close contact with the central hole 2 is set in a printing paper storage section of a printer.

[0025] The housing of the printer having the shaft 4 is constituted by, for example, a holder H having the shaft 4 as shown in FIG. The holder H includes a shaft 4, a support plate 5 detachably attached to one end of the shaft 4, and a support plate 6 fixed to the other end. First, the support plate 5 is removed from one end of one of the shafts 4, and the shaft 4 is inserted into the center hole 2 of the roll body R to which the sheet roll 3 is attached. Thereafter, the support plate 5 is fixed to the shaft 4, and the roll body R is set in the printer via the holder H.

[0026] When the shaft 4 is inserted through the central hole 2 in this way, the resin sheet roll 3 comes into direct contact with the shaft 4, as shown in Figure 5. Because the sheet roll 3 is in close contact with the inner circumference of the central hole 2, there is no direct contact between the shaft 4 and the long paper 1. As a result, friction does not cause the long paper 1 to wrinkle around the inner circumference of the central hole 2, and the long paper 1 does not become unwrinkled or frayed. 5 is a schematic diagram of the roll body R of this embodiment, focusing on the periphery of the central hole 2. In this figure, the thickness of the sheet body s and the long paper 1 are shown in an exaggerated manner, and the portion of the long paper 1 that is wound in multiple layers is omitted.

[0027] In this embodiment, as shown in Fig. 5, the winding direction of the sheet roll 3 is opposite to that of the roll body R, so that the shape of the roll body R can be more reliably maintained even when the long paper 1 is pulled out. The action of such a sheet roll 3 will be explained below with reference to Figs. 5 and 6. Note that Fig. 6 is a schematic diagram of a coreless roll body R' that does not have a sheet roll 3, and corresponds to Fig. 5 of the embodiment.

[0028] As shown in Figure 6, when the printer shaft 4 is inserted into the central hole 2 of the coreless roll body R', the shaft 4 comes into direct contact with the long sheet of paper 1 to be printed. When the long sheet of paper 1 is pulled in the direction of arrow A and the roll body R' rotates, a frictional force is generated at the contact point P between the long sheet of paper 1 and the shaft 4 at the central hole 2. This frictional force acts in the direction of arrow B as a force to hold back the base end of the long sheet of paper 1.

[0029] When the long paper 1 is pulled in the direction of arrow A in this state, the portion that constitutes the periphery of the central hole 2 moves inward as shown by the dashed arrow in Figure 6. In other words, the inner diameter of the central hole 2 becomes smaller, the long paper 1 becomes entangled around the shaft 4, and the rotation of the roll body R' is hindered. Even if the long paper 1 does not become entangled around the shaft 4, if the shape of the central hole 2 becomes distorted, the roll body R' will not be able to rotate smoothly.

[0030] In contrast, in this embodiment shown in Fig. 5, the shaft 4 easily slides on the surface of the resin sheet roll 3, and the frictional force as shown in Fig. 6 is unlikely to occur. Furthermore, even if frictional force in the direction of arrow B occurs between the shaft 4 and the sheet roll 3, this force acts on the sheet roll 3 in contact with the shaft 4 as a force in a direction to open it (to expand its diameter). This reliably prevents the central hole 2 from shrinking, and maintains the gap between the central hole 2 and the shaft 4. This allows the roll body R to maintain smooth rotation.

[0031] Furthermore, regardless of the winding direction of the sheet roll 3, when the resin sheet roll 3 is inserted into the central hole 2 of the roll body R, a force in the radial direction acts due to the rigidity of the sheet body s. Therefore, the shape of the central hole 2 is maintained, and the shape of the entire roll body R is also maintained. Furthermore, even in the case of a printer that does not have a shaft 4 and in which the outer circumference of the roll body R dropped into the storage section is supported directly by the storage section, the rigidity of the sheet body s of the sheet roll 3 makes it difficult for the center hole 2 and the roll body R to deform, allowing the long paper 1 to be pulled out smoothly. In particular, as the number of remaining turns of the long paper 1 decreases with use, the roll body R becomes more susceptible to deformation due to its own weight or external forces, but the shape of the roll body R can be maintained by maintaining the shape of the center hole 2 using the sheet roll 3.

[0032] As described above, by using the sheet roll 3 of this embodiment, the coreless roll paper can be set and used in a general printer, regardless of whether or not it has a shaft or a special jig. The sheet roll 3 can be easily formed from a resin sheet. For example, if you use old clear files, you can save on material costs. Moreover, since the sheet roll 3 can be repeatedly inserted into the central hole 2 for use, there is no need to prepare the same number of sheet rolls as there are roll bodies R. For example, even when coreless roll paper is sold in a set, as long as at least one coreless roll paper in the set is equipped with a sheet roll 3, that sheet roll 3 can be reused with the other coreless roll paper.

[0033] Furthermore, since the cardboard core can be omitted, the manufacturing cost of the roll body R can be reduced. It also reduces the waste of unnecessary paper cores. For example, 1,000 paper cores with a diameter of 40 mm, length of 60 mm, and thickness of 2 mm weigh 11.8 kg. This means that the amount of waste can be reduced. Furthermore, the roll body R is also lighter, which is advantageous in terms of transportation.

[0034] In this way, the costs of production, disposal and transportation are reduced, and the associated CO 2 A reduction in CO2 emissions can also be expected. If the method of forming and inserting the sheet roll 3, i.e., winding the sheet body s in the opposite direction to the roll body R and inserting it into the central hole 2, is written on the sheet body s, anyone can see at a glance how to properly wind the sheet body s at any time. This allows anyone to load the sheet roll 3 into the central hole 2 of the roll body R in the correct winding manner, and to set the roll body R with the optimal sheet roll 3 loaded in the printer.

[0035] In the above embodiment, the sheet roll 3 is formed from a polypropylene sheet body s having a thickness of about 0.25 mm, but the sheet body s may have a rigidity that allows it to naturally expand, and the material and thickness are not limited to those in the above embodiment. Since the rigidity of the sheet body s increases as the thickness increases, in order to form a sheet roll 3 that naturally expands, the thickness of the sheet body s is preferably 0.2 mm or more, regardless of the type of resin. [Industrial Applicability]

[0036] This can expand the uses of coreless roll paper for printers. [Explanation of symbols]

[0037] 1. Long piece of paper (for printers) 2 center hole 3 Sheet roll 4 Roll paper support shaft R (coreless) roll body s Seat body L (seat body) length

Claims

1. A coreless roll member to be attached to a coreless roll body, around which a strip-shaped long printer paper is wound to form a cylindrical center hole, and which is attached to a printing paper storage section of a printer, comprising: A strip-shaped sheet body longer than the circumference of the cross-sectional circle of the center hole is wound and fitted into the center hole. Components for coreless rolls.

2. the printer includes a shaft for supporting roll paper in the storage section, the shaft being inserted through the central hole; The coreless roll member according to claim 1 , wherein the sheet body is wound in a direction opposite to a winding direction of the long paper on the coreless roll body.

3. The sheet itself has instructions on how to roll it. The coreless roll member according to claim 2 .

4. The sheet body is made of a resin sheet having a thickness of 0.2 mm or more. The coreless roll member according to claim 1 or 2.

5. a coreless roll body around which a strip of long paper for a printer is wound and which has a cylindrical center hole formed therein and which is accommodated in a printing paper accommodation section of a printer; a coreless roll member around which a strip-shaped sheet body longer than the circumference of the cross-sectional circle of the central hole is wound and mounted in the central hole; Coreless roll paper with

6. an insertion process for inserting a sheet roll, around which a strip-shaped sheet body longer than the circumference of a cross-sectional circle of the center hole is wound, into a center hole of a coreless roll body around which a strip-shaped long sheet for a printer is wound; A process of mounting the coreless roll body on a shaft for supporting roll paper of a printer. Equipped with In the insertion process, the sheet body is wound in a direction opposite to the winding direction of the long paper on the coreless roll body. How to load coreless roll paper.

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