JP2014051352A - Roll sheet assembly, and roll paper flange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll sheet assembly capable of fixing a paper tube of roll paper and a flange stably before the roll paper is used and while the roll paper is being used, and disassembling the paper tube and the flange easily after the roll paper was used.SOLUTION: A roll sheet assembly 100 comprises: a paper tube; roll paper rolled on the paper tube; a pair of flanges 130 arranged at the two ends of the paper tube; and an intermediate shaft 140 inserted into the paper tube and connecting the paired flanges. At least one of the flanges includes: a flange body 133 for covering the end faces of the roll paper; and a junction disposed at the center of the inner face of the flange body and jointing the end portions of the intermediate shaft. In the flange body, there are formed cutting lines 150 for separating the junction jointed to the intermediate shaft, from the flange body.

Description

The present disclosure relates to a roll paper assembly and a roll paper flange.

  In a printer such as a thermal printer, a thermal transfer printer (such as a sublimation printer), or an inkjet printer, a roll paper in which a print paper is wound around a paper tube in a roll shape is used for printing in large quantities. As a method of transmitting information such as printing characteristics and remaining amount of the roll paper to the printer, there is a method using flanges provided at both ends of the roll paper.

  For example, in the thermal printer described in Patent Document 1, flanges with irregularities formed on the outer surface are attached to both ends of the thermal paper roll, and a contact sensor is provided on the holder of the thermal printer that houses the thermal paper roll. Then, based on the contact state of the flange unevenness with respect to the contact sensor, the state of the thermal paper roll (remaining paper amount, thermal paper type, mounting state, etc.) is detected and transmitted to the printer side.

JP 2012-51703 A

  By the way, when the flange described in Patent Document 1 is applied to roll paper, before and during use of the roll paper, the flange and the paper tube of the roll paper are used so that the flange does not easily come off from the roll paper. It is required to have a structure that integrates them stably. On the other hand, after the roll paper is used, it is required that the paper tube and the flange can be easily disassembled in order to separate and discard the paper tube (for example, paper material) and the flange (for example, resin material such as polypropylene) of different materials.

  However, in the thermal paper roll described in Patent Document 1, it is difficult to separate the paper tube and the flange after use if the paper tube and the flange are firmly fixed in consideration of the stability before use and during use. As a result, separation and disposal of flanges and paper tubes and reduction of waste were not realized. On the other hand, if priority is given to ease of disassembly after use, and the paper tube and flange fixing structure is loosened, the flange can be easily detached from the paper tube before and during use, resulting in poor usability and printer operation. There was also a problem.

  In view of the above circumstances, the paper tube and the flange of the roll paper can be stably fixed before and during use of the roll paper, and the paper tube and the flange can be easily disassembled after use of the roll paper. There is a need for a roll paper assembly capable of

According to this disclosure,
A paper tube,
Roll paper wound around the paper tube;
A pair of flanges disposed at both ends of the paper tube;
A central shaft that is inserted into the paper tube and connects the pair of flanges;
With
At least one of the flanges is
A flange body that covers an end surface of the roll paper;
A joint portion provided at the center of the inner surface of the flange body, to which an end of the middle shaft is joined;
With
A roll paper assembly is provided in which the flange main body is formed with a cutting line for separating the joint joined to the central shaft from the flange main body.

In addition, according to the present disclosure,
A pair of flanges disposed at both ends of the paper tube around which the roll paper is wound;
A central shaft that is inserted axially into the paper tube and connects the pair of flanges;
With
At least one of the flanges is
A flange body that covers an end surface of the roll paper;
A joint portion provided at the center of the inner surface of the flange body, to which an end of the middle shaft is joined;
With
The flange body is provided with a roll paper flange in which a cutting line for separating the joint portion joined to the middle shaft from the flange body is formed.

  According to the present disclosure, when a force is applied to the flange body in a direction separating from the paper tube, the flange body is cut along the cutting line, and at least a part of the joint portion joined to the center shaft is It is separated from the flange main body, and is pulled out from the paper tube while the joint and the central shaft separated from the flange main body are joined. As a result, the flange and the paper tube can be stably joined before and during use of the roll paper assembly, and after use of the roll paper assembly, the flange body is cut along the cutting line to The flange body can be separated and the flange and paper tube can be separated.

  As described above, according to the present disclosure, the roll paper tube and the flange can be stably fixed before and during use of the roll paper, and the roll paper is used after the roll paper is used. It can be easily disassembled.

1 is a block diagram illustrating an overall configuration of a printer according to a first embodiment of the present disclosure. It is the front view and perspective view which show the structure of the roll paper assembly which concerns on the same embodiment. FIG. 4 is a front view, a cross-sectional view taken along line A-A ′, and a side view showing the roll paper holder in a state where the roll paper assembly according to the embodiment is not mounted. It is a front view which shows the roll paper holder of the state with which the roll paper assembly which concerns on the embodiment was mounted | worn. It is sectional drawing which shows the contact state of the convex part of the flange of the roll paper assembly which concerns on the same embodiment, and a contact sensor. It is a table | surface which shows the sensor signal output from the contact sensor which concerns on the same embodiment. It is a signal waveform diagram showing the relationship between the remaining amount of roll paper and the sensor signal of the contact sensor according to the embodiment. It is a perspective view which shows the flange which concerns on the example of a change of the embodiment. It is a perspective view which shows the roll paper assembly which concerns on the example of a change of the embodiment. It is a disassembled perspective view of the roll paper assembly which concerns on the same embodiment. It is an assembly perspective view of the roll paper assembly which concerns on the same embodiment. It is the perspective view which looked at the flange of the roll paper assembly which concerns on the same embodiment from the outer surface and the inner surface side. It is sectional drawing which shows the junction part of the flange and center axis | shaft of the roll paper assembly which concerns on the same embodiment. It is explanatory drawing which shows the perforation which is an example of the cutting line which concerns on the embodiment. It is explanatory drawing which shows the cutting | disconnection guide cut groove which is another example of the cutting line which concerns on the embodiment. It is a perspective view which shows the flange which concerns on the example of a change of the embodiment. It is process drawing which shows the assembly method of the roll paper assembly which concerns on the same embodiment. It is process drawing which shows the assembly method of the roll paper assembly which concerns on the same embodiment. It is process drawing which shows the assembly method of the roll paper assembly which concerns on the same embodiment. It is a perspective view which shows the roll paper assembly after all the roll paper which concerns on the embodiment is used. It is sectional drawing which shows the roll paper assembly after all the roll paper which concerns on the embodiment is used. It is process drawing which shows the decomposition | disassembly method of the flange of the roll paper assembly which concerns on the same embodiment. It is sectional drawing which shows the roll paper assembly of the state which isolate | separated the flange which concerns on the embodiment. It is a disassembled perspective view of the roll paper assembly which concerns on 2nd Embodiment of this indication. It is an assembly perspective view of the roll paper assembly which concerns on the same embodiment. It is sectional drawing which shows the junction part of the flange and center axis | shaft of the roll paper assembly which concerns on the same embodiment. It is a perspective view which shows the roll paper assembly after all the roll paper which concerns on the embodiment is used. It is sectional drawing which shows the roll paper assembly after all the roll paper which concerns on the embodiment is used. It is a perspective view which shows the roll paper assembly of the state which isolate | separated the flange which concerns on the embodiment. It is sectional drawing which shows the roll paper assembly of the state which isolate | separated the flange which concerns on the embodiment. It is a perspective view which shows the example of a change of the flange of the roll paper assembly which concerns on the same embodiment. It is a perspective view showing a flange of a roll paper assembly concerning a 3rd embodiment of this indication. It is a perspective view which shows the flange of the roll paper assembly which concerns on the same embodiment. It is a perspective view which shows the fitting part of the flange which concerns on the same embodiment. It is a perspective view which shows the fitting part of the flange of FIG. 31A. It is a perspective view which shows the example of a change of the flange of the roll paper assembly which concerns on the same embodiment.

  Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

The description will be made in the following order.
1. 1st Embodiment (a spiral connection cutting line and an annular cutting line)
1.1. Printer configuration 1.2. Method for detecting state of roll paper assembly 1.2.1. Detection of remaining amount of roll paper 1.2.2. Detection of roll paper type 1.2.3. Detection of incorrect mounting 1.3. Configuration of roll paper assembly 1.3.1. Outline of roll paper assembly 1.3.2. Overall configuration of roll paper assembly 1.3.3. Configuration of cutting line 1.3.4. Specific examples of cutting lines 1.3.5. Intersection of cutting line and convex part 1.4. Assembling method of roll paper assembly 1.5. Disassembling method of roll paper assembly 1.6. Summary 2. Second embodiment (a plurality of linear connecting cutting lines and annular cutting lines)
2.1. Configuration of roll paper assembly 2.1.1. Overall configuration of roll paper assembly 2.1.2. Configuration of cutting line 2.2. Disassembling method of roll paper assembly 2.3. Example of change 2.4. Summary 3. Third embodiment (annular cutting line only)
3.1. Configuration of cutting line 3.2. Summary 4. 4th Embodiment (only parting line)
4.1. Configuration of cutting line 4.2. Example of change 4.3. Summary

<1. First Embodiment>
[1.1. Printer configuration]
First, the overall configuration of the printer 1 according to the first embodiment of the present disclosure will be described with reference to FIG. FIG. 1 is a block diagram showing the overall configuration of the printer 1 according to this embodiment.

  Hereinafter, as the printer 1 to which the roll paper assembly 100 according to the present embodiment is applied, an example of a thermal printer (thermal printer) used in a medical device such as an ultrasonic diagnostic device will be described. However, the roll paper assembly of the present disclosure may be applied to any printer other than a thermal printer, such as a thermal transfer printer (such as a sublimation printer) or an inkjet printer. In addition, the use of the printer 1 is not limited to the medical device, and may be applied to any electronic device such as a register device, a kiosk terminal, an electronic computer, a business printer, or a home printer.

  As shown in FIG. 1, the printer 1 includes an interface 2, an image memory 3, a print information configuration unit 4, a roll paper holder 5, a sensor 6, a head 7, a platen roller 8, and a platen motor 9. Is provided. Further, the printer 1 includes an operation unit 10, a printer control unit 11, a print control unit 12, a paper control unit 13, a platen motor control unit 14, a display unit 15, and a roll state determination unit 16.

  The interface 2 is a device for inputting an image signal to be printed from an external device to the printer 1. The image signal input through the interface 2 is temporarily stored in the image memory 3. The print information configuration unit 4 reads an image signal from the image memory 3, configures print information based on the image signal, and outputs the print information to the head 7. The print information is information representing an image or text to be printed that is laid out within the print frame of the print paper.

  The roll paper holder 5 is a holder (mounting unit) for mounting the roll paper assembly 100 to the printer 1, and is provided in the housing of the printer 1. The roll paper assembly 100 includes a roll paper 120 that is a printing paper wound in a roll shape, which will be described in detail later. The printing paper in the thermal printer according to the present embodiment is paper or heat-sensitive paper made of synthetic resin, but is not limited to this example.

  The roll paper 120 unrolled from the roll paper assembly 100 is supplied to the head 7 by the rotation of the platen roller 8. The head 7 is a thermal printing head and performs a printing operation in cooperation with the platen roller 8. That is, the head 7 prints the print information input from the print information configuration unit 4 on the roll paper 120 (print paper) supplied from the roll paper assembly 100. The platen roller 8 is rotated by the platen motor 9 and feeds the roll paper 120 in the printing direction.

  The operation unit 10 includes various keys, a touch panel, and the like, receives a user operation for operating the printer 1, and outputs an input signal representing the user operation to the printer control unit 11. The printer control unit 11 controls the overall operation of the printer 1 based on an input signal from the operation unit 10. For example, the printer control unit 11 controls the image memory 3, the print information configuration unit 4, and the head 7 through the print control unit 12. Further, the printer control unit 11 controls the platen motor control unit 14 and the display unit 15 through the paper control unit 13. The platen motor control unit 14 controls the platen motor 9. Thereby, the feeding of the roll paper 120 by the platen roller 8 is controlled.

  In the printer 1 described above, the roll paper assembly 100 is mounted on the roll paper holder 5 provided in the casing of the printer 1. The roll paper holder 5 has a size / shape adapted to the roll paper assembly 100 and holds the roll paper assembly 100. The roll paper holder 5 is provided with a contact type sensor 6 for detecting the state (type, remaining amount of paper, mounted state, rotational state, etc.) of the roll paper assembly 100. The roll state determination unit 16 determines the state of the roll paper assembly 100 based on the detection result by the sensor 6 and outputs the determination result to the paper control unit 13. The paper control unit 13 controls the platen motor control unit 14 or the display unit 15 according to the determination result. The determination result is also supplied to the printer control unit 11, and the printer control unit 11 controls the head 7 or the print information configuration unit 4 through the print control unit 12 according to the determination result.

[1.2. Method for detecting state of roll paper assembly]
[1.2.1. Detection of remaining roll paper]
Next, a method for detecting the state of the roll paper assembly 100 according to the present embodiment will be described with reference to FIGS. In the present embodiment, in order to detect the remaining amount of the roll paper 120, the rotation state and the mounting state of the roll paper assembly 100 are detected.

  FIG. 2 is a front view and a perspective view showing the configuration of the roll paper assembly 100 according to the present embodiment. As shown in FIGS. 2A to 2C, the roll paper assembly 100 includes a hollow cylindrical paper tube 110, a roll paper 120 wound around the outer periphery of the paper tube 110, and both ends of the roll paper 120. And a pair of left and right flanges 130A and 130B (hereinafter sometimes collectively referred to as “flange 130”).

  As described above, the roll paper assembly 100 is an assembly member in which the paper tube 110, the roll paper 120, and the pair of flanges 130 are assembled, and has a cylindrical roll shape as a whole. The roll paper assembly 100 is generally distributed in the market with the paper tube 110 having a flange 130 attached thereto.

  Then, the roll paper assembly 100 is mounted on the roll paper holder 5 of the printer 1 with the flanges 130 and 130 attached to both ends of the roll paper 120 and used for printing. Thereafter, after the remaining amount of the roll paper 120 is exhausted, the roll paper assembly 100 is taken out from the roll paper holder 5, separated into the flange 130 and the paper tube 110, and separately collected and discarded.

  As shown in FIG. 2B, the paper tube 110 is a cylindrical shaft member for winding the roll paper 120 into a roll shape. In a state where the roll paper assembly 100 is mounted on the roll paper holder 5, the paper tube 110 rotates around the central axis (roll axis C in FIG. 2) of the roll paper assembly 100. The material of the paper tube 110 is, for example, a paper material such as cardboard. However, the material is not limited to this example, and other materials such as a synthetic resin may be used as long as the roll paper 120 is strong enough to be wound. Good. The length of the paper tube 110 in the longitudinal direction is substantially the same as the width of the roll paper 120. The paper tube 110 functions as a support shaft that supports the roll paper 120. If there is a paper tube-less configuration in which only the roll paper 120 is wound without providing the paper tube 110, there is a problem such as curling of the unrolled printing paper, so the paper tube 110 is used as the roll axis. It is preferable to use it.

  The roll paper 120 is a belt-like printing paper, and is wound around the paper tube 110 in a roll shape. The material of the roll paper 120 is generally paper (for example, thermal paper in the case of a thermal printer), but other materials such as synthetic resin (for example, plastic paper) can be used as long as the print medium can be printed by the printer. There may be.

  The flange 130 is a disk-shaped member that covers both sides of the roll paper assembly 100 in the roll axis direction. A pair of left and right flanges 130A and 130B are attached to both ends of the paper tube 110, respectively. For example, the flange 130 is injection-molded using an inexpensive material such as synthetic resin, but may be formed by other materials or other manufacturing methods. Further, the flange 130 is formed so that the outer diameter of the flange 130 is approximately the same as or slightly larger than the maximum diameter of the roll paper 120 wound around the paper tube 110.

  The flange 130 has a function of protecting the roll paper 120 during transportation, a function of preventing the meandering of the roll paper 120 during printing operation, and the like. Furthermore, the flange 130 according to the present embodiment has a function of transmitting information representing the state of the roll paper assembly 100 to the printer 1.

  That is, an uneven portion for detecting the state of the roll paper assembly 100 by the sensor 6 is formed on at least one outer surface of the flanges 130A and 130B. Here, the inner surface of the flange 130 is a surface facing the roll paper 120. On the other hand, the outer surface of the flange 130 is on the side opposite to the inner surface of the flange 130 and faces the side surface of the roll paper holder 5 described later. As shown in FIG. 5C, a boss-like convex portion 131 and a ring-shaped convex portion 132 are formed on the outer surface of the flange 130 as convex portions for detecting the state of the roll paper assembly 100.

  The boss-shaped convex portion 131 is a convex portion for detecting the rotation state of the roll paper assembly 100. The ring-shaped convex portion 132 is a convex portion for detecting the mounting state of the roll paper assembly 100. The boss-shaped convex portion 131 is formed so as to protrude into a circular boss shape at a position shifted from the roll axis C. The ring-shaped convex portion 132 is formed so as to protrude into a ring shape having a predetermined width with the roll axis C as the center. The boss-shaped convex portion 131 and the ring-shaped convex portion 132 of the flange 130 are used for detecting the rotation state and the mounting state of the roll paper assembly 100 in cooperation with the sensor 6 of the roll paper holder 5 described later. .

  In the example of FIG. 5C, the boss-shaped convex portion 131 is formed only at one location inside the ring-shaped convex portion 132, but the boss-shaped convex portion 131 is formed outside the ring-shaped convex portion 132. Alternatively, it may be formed at a plurality of locations. Further, the boss-shaped convex portion 131 has a circular boss shape, but may have an arbitrary shape such as an ellipse or a rectangle. Further, although only one ring-shaped convex portion 132 is formed around the roll axis C, a plurality of ring-shaped convex portions 132 may be formed concentrically around the roll axis C. Further, the width of the ring-shaped convex portion 132 can be changed as appropriate.

  Next, the configuration of the roll paper holder 5 to which the roll paper assembly 100 according to the present embodiment is mounted will be described with reference to FIGS. FIG. 3 is a front view, a cross-sectional view taken along line A-A ′, and a side view showing the roll paper holder 5 in a state where the roll paper assembly 100 according to the present embodiment is not mounted. FIG. 4 is a front view showing the roll paper holder 5 in a state where the roll paper assembly 100 according to the present embodiment is mounted.

  As shown in FIG. 3, the roll paper holder 5 includes a housing 51 having an opening surface. The casing 51 is provided with a storage unit (a central storage unit 52 and flange storage units 53 and 54) that stores the roll paper assembly 100, and a sensor 6 that detects the state of the roll paper assembly 100. .

  The central accommodating portion 52 accommodates the central main body portion (the portion of the paper tube 110 and the roll paper 120) of the roll paper assembly 100. The central housing portion 52 is a recess having an arcuate vertical cross section having a larger diameter than the roll paper 120 of the roll paper assembly 100, and one side is open. The flange accommodating portions 53 and 54 accommodate the outer portions of the flanges 130 </ b> A and 130 </ b> B on both sides of the roll paper assembly 100. The flange accommodating portions 53 and 54 are concave portions having an arcuate vertical cross section having a slightly larger diameter than the ring-shaped convex portion 132 of the flange 130, and one side is open.

  In addition, two contact sensors 61 and 62 are provided on the side surface of one flange housing portion 53 as a sensor 6 for detecting the state of the roll paper assembly 100 mounted on the roll paper holder 5. As shown in FIG. 4, the contact sensors 61 and 62 are arranged at positions that can face the boss-shaped convex portion 131 and the ring-shaped convex portion 132 formed on the outer surface of the flange 130 </ b> A of the roll paper assembly 100. Yes.

  The contact sensor 61 functions as a rotation state detection sensor for detecting the rotation state of the roll paper assembly 100. The contact sensor 61 faces and contacts the boss-shaped convex portion 131 of the flange 130 each time the roll paper assembly 100 normally mounted on the roll paper holder 5 rotates once (see FIG. 5). The contact sensor 62 functions as a mounting state detection sensor for detecting the mounting state of the roll paper assembly 100. The contact sensor 62 always faces and contacts the ring-shaped convex part 132 of the roll paper assembly 100 normally mounted on the roll paper holder 5 (see FIG. 5).

  As shown in FIG. 3, a paper feed mechanism including a platen roller 55 is provided on the front side of the roll paper holder 5. The platen roller 55 is a roller for pulling out the roll paper 120 from the roll paper assembly 100 mounted on the roll paper holder 5, and the axial direction of the platen roller 55 is a horizontal direction. As shown in FIG. 4, the roll paper assembly 100 is mounted on the roll paper holder 5 in a state where the drawing end 120 a of the roll paper 120 is unwound on the platen roller 55. At this time, the roll paper 120 of the roll paper assembly 100 does not contact the inner surface of the central housing portion 52, and the flanges 130 </ b> A and 130 </ b> B on both sides of the roll paper assembly 100 can be rotated by the flange housing portions 53 and 54. In a supported state, the roll paper assembly 100 is mounted on the roll paper holder 5. The roll paper assembly 100 continuously supplies the roll paper 120 in the printing direction while smoothly rotating around the roll axis C according to the rotation of the platen roller 55.

  Next, the detection operation of the contact sensors 61 and 62 according to the present embodiment will be described with reference to FIG. FIG. 5 is a cross-sectional view illustrating a contact state between the convex portions 131 and 132 of the flange 130 and the contact sensors 61 and 62 of the roll paper assembly 100 according to the present embodiment.

  As shown in FIGS. 5A and 5B, when the roll paper assembly 100 is normally mounted on the roll paper holder 5, the contact sensor 62 always faces and contacts the ring-shaped convex portion 132, and the ring-shaped convex portion 132. It is pressed by. Therefore, SW2 of the contact sensor 62 is always on. When the roll paper assembly 100 is not attached to the roll paper holder 5 or when it is not normally attached, the contact sensor 62 is not pressed by the ring-shaped convex portion 132, so that SW2 is turned off. .

  On the other hand, the contact sensor 61 repeats contact / non-contact with the boss-shaped convex portion 131 according to the rotation of the roll paper assembly 100, and SW1 of the contact sensor 61 always repeats on / off. As shown in FIG. 5A, when the contact sensor 61 and the boss-shaped convex portion 131 are not opposed to or in contact with each other, the contact sensor 61 is not pressed by the boss-shaped convex portion 131, and SW1 is also turned off. On the other hand, as shown in FIG. 5B, when the roll paper assembly 100 rotates and the contact sensor 61 and the boss-shaped convex portion 131 face each other and come into contact with each other, the contact sensor 61 is pressed by the boss-shaped convex portion 131, and SW1 is Turn on.

  In this way, the contact sensors 61 and 62 detect the contact state of the flange 130A with the boss-shaped convex portion 131 and the ring-shaped convex portion 132, and turn on / off the switches SW1 and SW2 according to the contact state. And the contact sensors 61 and 62 output the sensor signal showing this detection result to said roll state determination part 16 (refer FIG. 1).

  FIG. 6 is a table showing sensor signals output from the contact sensors 61 and 62 according to the present embodiment. As shown in FIG. 6, when the first contact sensor 62 (attachment state detection sensor) is pressed by the ring-shaped convex portion 132, the roll paper assembly 100 is normally attached to the roll paper holder 5. A low signal indicating this is output. On the other hand, when the first contact sensor 62 is not pressed by the ring-shaped convex portion 132, the first contact sensor 62 outputs a high signal indicating that the roll paper assembly 100 is not mounted or is in an abnormal mounting state.

  The second contact sensor 61 (rotation state detection sensor) outputs a low signal indicating that the boss-shaped convex portion 131 faces the contact sensor 61 when being pressed by the boss-shaped convex portion 131. . On the other hand, when the second contact sensor 61 is not pressed by the boss-shaped convex portion 131, the second contact sensor 61 outputs a high signal indicating that the boss-shaped convex portion 131 does not face the contact sensor 61.

  The contact sensor 61 outputs a high signal indicating that the boss-shaped convex portion 131 does not face the contact sensor 61 when the roll paper assembly 100 is not mounted. Further, the combination of the mounted state and the rotational state of the roll paper assembly 100 and the sensor signals of the two contact sensors 61 and 62 may be any combination other than the example of FIG.

  Here, it is assumed that the roll paper 120 is supplied from the roll paper assembly 100 at a constant speed. In this case, the larger the roll diameter of the roll paper 120 of the roll paper assembly 100, that is, the greater the remaining amount of the roll paper 120, the slower the rotation speed of the roll paper assembly 100 around the roll axis C. Therefore, the remaining amount of the roll paper 120 can be detected by detecting the rotational speed of the roll paper assembly 100.

  FIG. 7 is a signal waveform diagram showing the relationship between the remaining amount of the roll paper 120 and the sensor signal of the contact sensor 61 according to the present embodiment. In FIG. 7, it is assumed that the roll paper 120 is supplied from the roll paper assembly 100 at a constant speed.

  As shown in FIG. 7, when the remaining amount of the roll paper 120 is large, the rotation speed of the roll paper assembly 100 becomes slow, and the time interval Δt from the low signal falling edge of the contact sensor 61 to the next low signal falling edge is set. become longer. On the other hand, when the remaining amount of the roll paper 120 is small, the rotation speed of the roll paper assembly 100 increases and the time interval Δt becomes relatively short.

  For this reason, when the time interval Δt of the low signal of the contact sensor 61 is measured and Δt becomes equal to or smaller than the threshold value Δtt, the remaining amount of the roll paper 120 is small, and therefore the necessity of replacing the roll paper assembly 100 is reduced. The user can be notified. In this case, for example, the rotation speed of the roll paper assembly 100 when 90% of the roll paper 120 has been used is obtained, and the corresponding low signal time interval Δt may be calculated as the threshold value Δtt.

  As described above, according to the roll paper assembly 100 according to the present embodiment, the roll paper assembly 100 is mounted using the boss-like convex portions 131 and the ring-like convex portions 132 formed on the outer surface of the flange 130. By detecting the state and the rotation state, the remaining amount of the roll paper 120 can be detected using a simple structure. Therefore, according to the detection result of the remaining amount of the roll paper 120, the user can be notified of the consumption of the roll paper 120, the necessity of replacement, and the like.

  In the above, the example in which the boss-shaped convex portion 131 and the ring-shaped convex portion 132 are used to detect the mounted state and the rotational state of the roll paper assembly 100 has been described. The shape and the state of the roll paper assembly 100 detected using the convex portions are not limited to the above example. An example of the change will be described below.

[1.2.2. Detect roll paper type]
For example, by changing the width of the ring-shaped convex portion 132 on the outer surface of the flange 130, the type of the roll paper assembly 100 and the type of the roll paper 120 (roll width, material, type, etc.) may be made detectable. . Specifically, as shown in FIG. 8, when the flange 130 </ b> C having the ring-shaped convex part 132 </ b> C having a large width w <b> 1 is used, the two contact sensors 61 and 62 provided on the roll paper holder 5 are connected to the ring. It is pushed by the convex part 132C. On the other hand, when the flange 130D provided with the ring-shaped convex portion 132D having the thin width w2 is used, only one of the contact sensors 61 is pushed by the ring-shaped convex portion 132D.

  Accordingly, the type of the roll paper 120 can be detected using a simple structure simply by changing the width of the ring-shaped convex portion 132 of the flange 130 according to the type of the roll paper 120. Therefore, the printer 1 can perform control according to the type of the roll paper 120 (control for adjusting the printing speed, density, density, etc.) without requiring a user's specifying operation.

[1.2.3. Detection of incorrect mounting]
In addition, it is possible to detect erroneous mounting of the roll paper assembly 100 by changing the shape and arrangement of the convex portions between the two flanges 130 on both sides of the roll paper assembly 100. Specifically, as shown in FIG. 9, a ring-shaped convex portion 132E having a large outer diameter D1 is attached to one side of the roll paper assembly 100, and a small outer diameter is provided to the other side of the roll paper assembly 100. The ring-shaped convex part 132F of D2 is attached. The flange housing portion 53 on one side of the roll paper holder 5 is shaped to fit the ring-shaped convex portion 132E having a large outer diameter D1, and the flange housing portion 54 on the other side is a ring-shaped convex portion having a small outer diameter D2. The shape is suitable for 132F.

  Accordingly, when the roll paper assembly 100 is mounted on the roll paper holder 5 in the correct direction, the ring-shaped convex portions 132E and 130F are appropriately accommodated in the flange accommodating portions 53 and 54, respectively. On the other hand, if the roll paper assembly 100 is to be attached to the roll paper holder 5 in the wrong direction, the ring-shaped convex portion 132E having the large outer diameter D1 cannot be accommodated in the flange accommodating portion 54 for the small outer diameter D2. Accordingly, it is possible to prevent erroneous mounting of the roll paper assembly 100 using a simple structure by simply changing the size of the ring-shaped convex portions 132 of the left and right flanges 130E and 130F.

[1.3. Configuration of roll paper assembly]
Next, the configuration of the roll paper assembly 100 according to the first embodiment of the present disclosure will be described.

[1.3.1. Outline of roll paper assembly]
First, an outline of the roll paper assembly 100 according to the present embodiment will be described. As described above, in the roll paper assembly 100 according to the present embodiment, the pair of flanges 130 are attached to both ends in the axial direction of the paper tube 110 around which the roll paper 120 is wound. It is a structure that covers both end faces. With the flange 130, in addition to the protection function of the roll paper 120, the stable attachment of the roll paper 120 to the roll paper holder 5, and the function of preventing the meandering of the roll paper 120, the roll paper assembly 100 using the convex portion of the outer surface of the flange 130. The function to detect the state of the can be realized.

  On the other hand, in the structure using the flange 130, it becomes a problem whether the flange 130 and the paper tube 110 can be easily disassembled after the roll paper assembly 100 is used. That is, the flange 130 is required to have a structure integrated with the roll paper 120 and the paper tube 110 so that the roll paper 120 is not easily detached from the paper tube 110 before and during use. On the other hand, after the roll paper 120 is used, it is required that the paper tube 110 and the flange 130 can be easily separated, and that the paper tube 110 and the flange 130 can be separated and collected at the time of disposal and the amount of waste can be reduced.

  Therefore, the roll paper assembly 100 according to the present embodiment employs a structure in which a cutting line (for example, perforation, cutting guide groove) that can be easily cut is formed in the main body of the flange 130. Thereby, after the roll paper 120 is used, the paper tube 110 and the flange 130 can be easily separated by cutting the main body of the flange 130 along the cutting line.

[1.3.2. Overall configuration of roll paper assembly]
Next, the configuration of the roll paper assembly 100 according to the present embodiment will be described in detail with reference to FIGS. FIG. 10 is an exploded perspective view of the roll paper assembly 100 according to the present embodiment, and FIG. 11 is an assembly perspective view of the roll paper assembly 100 according to the present embodiment. FIG. 12 is a perspective view of the flange 130 of the roll paper assembly 100 according to the present embodiment as viewed from the outer surface and the inner surface side. FIG. 13 is a cross-sectional view showing a joint portion between the flange 130 and the center shaft 140 of the roll paper assembly 100 according to the present embodiment. 10 to 13, the paper tube 110 and the roll paper 120 of the roll paper assembly 100 are not shown for convenience of explanation.

  As shown in FIGS. 10 and 11, the roll paper assembly 100 includes the paper tube 110 and the roll paper 120, and a pair of left and right flanges 130 </ b> A and 130 </ b> B (hereinafter, “ And a central shaft 140 that is inserted into the paper tube 110 and connects the pair of flanges 130A and 130B.

  The middle shaft 140 is a rod-like member having a length equivalent to that of the paper tube 110. The thickness of the middle shaft 140 is smaller than the inner diameter of the paper tube 110, and the middle shaft 140 can be inserted into the paper tube 110. Further, both end portions 141 </ b> A and 141 </ b> B (hereinafter, may be collectively referred to as “end portion 141”) of the middle shaft 140 function as a joined portion for joining the flange 130 to the middle shaft 140.

  The middle shaft 140 is inserted into the hollow space in the paper tube 110, and one end portion 141A of the middle shaft 140 is joined to one flange 130A, and the other end portion 141B of the middle shaft 140 is joined to the other flange 130B. The middle shaft 140 in the illustrated example is a rectangular bar-shaped member having a rectangular cross section, but is not limited to this example, and the middle shaft 140 has any shape as long as it can be inserted into the paper tube 110. It may be.

  The flange 130 includes a flange main body 133 and a joint portion (fitting portion 134) for joining the flange main body 133 to the middle shaft 140. The flange main body 133 is a disk-shaped member having an outer diameter corresponding to the maximum diameter of the roll paper 120, and has a function of covering the end surfaces of the paper tube 110 and the roll paper 120. On the outer surface 133a of the flange main body 133 (the surface exposed to the outside in the axial direction of the roll paper assembly 100), convex portions such as a ring-shaped convex portion 132 for detecting the state of the roll paper assembly 100 are provided. Protrusions are formed. On the other hand, a joint portion that is joined to the end portion 141 of the center shaft 140 is formed at the center portion of the inner surface 133b of the flange main body 133 (the surface facing the end surface of the roll paper 120).

  Here, the joint portion of the flange 130 is a portion for joining the flange main body 133 and the center shaft 140. The joint portion of the flange 130 according to the present embodiment includes a fitting portion 134 that fits with the end portion 141 of the middle shaft 140. The fitting portion 134 is formed to project from the center of the inner surface 133b of the flange main body 133 toward the inside (the paper tube 110 side). The fitting portion 134 can be inserted into the paper tube 110 and has a shape that can be fitted to the end portion 141 of the middle shaft 140. In the illustrated example, the fitting portion 134 is an end portion of the middle shaft 140. It has a rectangular tube shape into which 141 can be inserted. Further, on the inner surface of the fitting portion 134, a locking claw 135 that fits into the concave portion 142 of the end portion 141 of the middle shaft 140 is formed to protrude.

  With such a fitting structure, the end portion 141 (fitting portion) of the middle shaft 140 is inserted into the fitting portion 134 of the flange 130, and the locking claw 135 in the fitting portion 134 is fitted into the concave portion 142 of the middle shaft 140. Can be made. Thereby, since the end 141 of the middle shaft 140 is locked by the locking claw 135, the end 141 of the middle shaft 140 and the fitting portion 134 of the flange 130 can be firmly joined. Therefore, it is possible to prevent the flange 130 from being detached from the paper tube 110. Further, by using the fitting structure, the intermediate shaft 140 and the flange 130 can be joined relatively easily without using a separate joining member.

  In the above example, the fitting structure is such that the end portion 141 of the center shaft 140 is inserted into the fitting hole of the fitting portion 134 of the flange 130, but another fitting structure may be used. For example, the structure which inserts the fitting part 134 of the flange 130 in the fitting hole formed in the edge part 141 of the center shaft 140 may be sufficient.

  In addition to the above-described example of the fitting structure, the joining method of the intermediate shaft 140 and the flange 130 may be other joining methods as long as the flange 130 is not easily detached from the intermediate shaft 140 when the roll paper assembly 100 is used. May be used. For example, joining by thermal deformation (thermal welding or the like), joining by an adhesive, joining by a fixing member such as a screw, or the like can be used.

[1.3.3. Cutting line configuration]
Subsequently, the cutting line 150 formed in the flange 130 according to the present embodiment will be described with reference to FIGS.

  As shown in FIGS. 10 to 13, the flange main body 133 of the flange 130 according to the present embodiment is formed with a cutting line 150 for separating the fitting portion 134 joined to the intermediate shaft 140 from the flange main body 133. Yes. This cutting line 150 is a linear cutting easy part formed in the flange main body 133, and is a cutting guide line for enabling the flange main body 133 to be easily cut. In the portion of the flange main body 133 where the cutting line 150 is formed, the strength and thickness of the member are reduced compared to other portions of the flange main body 133. Therefore, when no external force is applied to the flange body 133, the flange body 133 is not cut along the cutting line 150. However, when an external force is applied, the flange body 133 is cut along the cutting line 150. Can be easily cut.

  As shown in FIGS. 10 to 13, the cutting line 150 according to the present embodiment includes an annular cutting line 151 formed around the fitting part 134 (joining part) in the flange main body 133 and an outer peripheral edge of the flange main body 133. And a spiral cutting line 152 connecting the annular cutting line 151.

  The annular cutting line 151 is an annular cutting line formed so as to surround the entire periphery of the fitting portion 134 of the flange main body 133, and is an endless cutting line such as a circle, an elliptical system, or a rectangle. The annular cutting line 151 is present in the flange main body 133 without reaching the outer peripheral edge of the flange main body 133. The annular cutting line 151 is preferably formed outside the fitting portion 134 in the flange main body 133 and at a position as close as possible to the fitting portion 134. Thereby, when the flange main body 133 is cut along the annular cutting line 151, the fitting portion 134 fitted to the middle shaft 140 can be separated from the flange main body 133, and the separated fitting portion 134 can be separated from the middle shaft. Together with 140, the paper tube 110 can be pulled out. From this viewpoint, the size of the annular cutting line 151 is preferably within a range smaller than the inner diameter of the paper tube 110.

  The spiral cutting line 152 is an example of a connecting cutting line that connects the outer peripheral edge of the flange body 133 and the annular cutting line 151, and is formed in a spiral shape from the outer peripheral edge of the flange body 133 to the annular cutting line 151. . The inner peripheral end of the spiral cutting line 152 is connected to the annular cutting line 151, and the outer peripheral end of the spiral cutting line 152 (the position of the outer edge of the flange main body 133) is notched 153. Is formed.

  The spiral cutting line 152 has a function of guiding the cut end of the flange main body 133 from the outer peripheral edge of the flange main body 133 to the annular cutting line 151. That is, when the flange main body 133 is cut, first, the flange main body 133 is cut along the spiral cutting line 152 using the notch 153 on the outer peripheral edge of the flange main body 133 as a cut end. Next, when the cut end along the spiral cutting line 152 reaches the annular cutting line 151, the periphery of the fitting portion 134 of the flange main body 133 can be cut along the annular cutting line 151.

  By configuring the connection cutting line with the spiral cutting line 152 in this way, the flange main body 133 can be easily cut from the outer peripheral edge of the flange main body 133 to the annular cutting line 151 using only one spiral cutting line 152. It becomes possible to do.

[1.3.4. Specific examples of cutting lines]
Here, specific examples of the cutting line 150 (spiral cutting line 152 and spiral cutting line 152) will be described with reference to FIGS. FIG. 14 is an explanatory diagram showing a flange main body 133 in which a perforation 155 as an example of the cutting line 150 according to the present embodiment is formed. FIG. 15 is an explanatory view showing a flange main body 133 in which a cutting guide cut groove 156 is formed as another example of the cutting line 150 according to the present embodiment.

  As shown in FIG. 14, the cutting line 150 may be constituted by a perforation 155. The length of the cut line and the joint line of the perforation 155 is appropriately selected according to the material and thickness of the flange main body 133. When the flange main body 133 is injection-molded, the perforation 155 can be formed relatively easily by using a perforation mold. Alternatively, the perforation 155 may be formed using a perforation cutter after the flange main body 133 is molded.

  Further, as shown in FIG. 15, the cutting line 150 may be configured by a cutting guide groove 156. The depth and width of the cutting guide kerf 156 are appropriately selected according to the material and thickness of the flange main body 133. The cutting guide kerf 156 may be formed by using a die for grooving at the time of injection molding of the flange main body 133, or may be formed by half cutting using a cutting tool after the molding of the flange main body 133. Good.

  Further, various shapes can be adopted as the cross-sectional shape of the cutting guide groove 156. For example, as shown in FIG. 15A, one V-groove 156A may be formed on one surface of the flange body 133, or, as shown in FIG. 15B, two V-grooves 156B, 156B are formed on both surfaces of the flange body 133. May be formed to face each other. Further, the cutting guide kerf 156 may be a kerf 156C having a rectangular cross section as shown in FIG. 15C or a kerf 156D having a semicircular cross section as shown in FIG. 15D.

[1.3.5. Crossing point of cutting line and convex part]
Next, the relationship between the convex part of the flange 130 and the cutting line 150 will be described. As described above, convex portions such as the ring-shaped convex portion 132 are formed on the outer surface 133a of the flange main body 133 of the flange 130 according to the present embodiment. This convex portion is detected by a sensor 6 installed on the roll paper holder 5. In the portion where the convex portion is installed, the thickness of the flange main body 133 is increased.

  For this reason, in the site | part where the cutting line 150 and a convex part cross | intersect in the flange main body 133, the cutting | disconnection along the cutting line 150 may become difficult. For example, as shown in FIG. 12, at a portion 154 where the spiral cutting line 152 and the ring-shaped convex portion 132 intersect, cutting along the spiral cutting line 152 may be hindered.

  Therefore, as shown in FIG. 16, it is preferable to form a slit 157 at a portion 154 where the spiral cutting line 152 intersects with the ring-shaped convex portion 132 in the flange main body 133. The slit 157 is an elongated gap that penetrates the flange main body 133, and is formed along the spiral cutting line 152 of the intersection site 154. Since the intersection 154 can be cut in advance by the slit 157, the flange main body 133 can be cut more smoothly along the spiral cutting line 152.

[1.4. Assembly method of roll paper assembly]
Next, an assembling method of the roll paper assembly 100 according to this embodiment will be described with reference to FIGS. 17 to 19 are process diagrams illustrating an assembling method of the roll paper assembly 100 according to the present embodiment.

  As shown in FIG. 10 above, at the beginning of assembly, the pair of flanges 130A and 130B, the center shaft 140, the paper tube 110, and the roll paper 120 of the roll paper assembly 100 are separated. From this state, it is assumed that the paper tube 110 and the roll paper 120, the flanges 130A and 130B, and the middle shaft 140 are assembled.

  First, as shown in FIG. 17, one flange 130 </ b> A and one end portion 141 </ b> A of the center shaft 140 are joined. Specifically, one end portion 141 </ b> A of the middle shaft 140 is inserted and fitted into the fitting portion 134 of the flange 130 </ b> A, and the concave portion 142 of the one end portion 141 </ b> A is locked by the locking claw 135 of the fitting portion 134. Thereby, the flange 130 </ b> A is stably fixed to the middle shaft 140. After that, as shown in FIG. 17, the center shaft 140 to which the flange 130 </ b> A is joined is inserted into the paper tube 110 of the roll paper 120.

  Next, as shown in FIG. 18, the other end portion 141B of the middle shaft 140 inserted into the paper tube 110 is joined to the other flange 130A. Specifically, the other end portion 141B of the center shaft 140 is inserted and fitted into the fitting portion 134 of the flange 130B, and the concave portion 142 of the other end portion 141B is locked by the locking claw 135 of the fitting portion 134. Thereby, the flange 130B is stably fixed to the middle shaft 140.

  As a result, as shown in FIG. 19, with the roll paper 120 and the paper tube 110 sandwiched between the flanges 130A and 130B, the flanges 130A and 130B are connected by the middle shaft 140 inserted into the paper tube 110. Assembling of the roll paper assembly 100 is completed.

  As described above, according to the method for assembling the roll paper assembly 100 according to the present embodiment, the roll paper assembly 100 can be easily formed by simply joining the flanges 130A and 130B, the central shaft 140, the roll paper 120, and the paper tube 110. And can be assembled quickly. Moreover, in the assembled roll paper assembly 100, since both the flanges 130A and 130B are firmly connected by the middle shaft 140, the flanges 130A and 130B are unlikely to be detached from the roll paper 120 and the paper tube 110.

[1.5. Disassembly method of roll paper assembly]
Next, a method for disassembling the roll paper assembly 100 according to the present embodiment will be described with reference to FIGS. 20 and 21 are a perspective view and a cross-sectional view showing the roll paper assembly 100 after the roll paper 120 according to the present embodiment is completely used. FIG. 22 is a process diagram showing a method for disassembling the flange 130A of the roll paper assembly 100 according to this embodiment. FIG. 23 is a cross-sectional view showing the roll paper assembly 100 in a state where the flange 130A according to the present embodiment is separated.

  As shown in FIGS. 20 and 21, when all the roll paper 120 of the roll paper assembly 100 is used and the remaining amount of the roll paper 120 runs out, the paper tube 110 is exposed between the pair of flanges 130A and 130B. It becomes a state. A procedure for disassembling the roll paper assembly 100 in this state into the paper tube 110, the flange 130A, the flange 130B, and the middle shaft 140 will be described.

  First, the user applies a force to the flange main body 133 of one flange 130 </ b> A in a direction to separate from the paper tube 110. Thereby, as shown in FIG. 22, the flange main body 133 of one flange 130 </ b> A is cut along the cutting line 150, and the flange main body 133 is separated from the center shaft 140 and the paper tube 110.

  Specifically, as shown in FIG. 22A, first, cutting of the flange main body 133 is started using the notch 153 on the outer peripheral edge of the flange main body 133 of the flange 130A as a cut end. Then, as shown in FIGS. 22A and 22B, the flange main body 133 is cut in a spiral shape along the spiral cutting line 152 from the outer peripheral side to the inner peripheral side. Next, after the cutting point along the spiral cutting line 152 reaches the annular cutting line 151, the entire periphery of the fitting portion 134 of the flange main body 133 is cut annularly along the annular cutting line 151.

  As a result, as shown in FIG. 22C, the flange main body 133 is completely cut along the annular cutting line 151, and the flange main body 133, the fitting portion 134, and the middle shaft 140 are separated. At this time, the fitting portion 134 is still in a state of being fitted to the middle shaft 140. Further, a part 133c on the inner peripheral side of the flange main body 133 inside the annular cutting line 151 remains around the fitting part 134, but the outer diameter of the part 133c is larger than the inner diameter of the paper tube 110. If it is smaller, the portion 133c can pass through the paper tube 110, so that there is no problem in the subsequent disassembling work.

  Thereafter, as shown in FIG. 23, the fitting portion 134 and the middle shaft 140 are pulled out from the paper tube 110 in a state where the fitting portion 134 separated from the flange main body 133 and the middle shaft 140 are joined. Thereby, the roll paper assembly 100 is disassembled into the flange main body 133 of the flange 130A, the paper tube 110, the middle shaft 140, and the flange 130B.

  As described above, the used roll paper assembly 100 can be easily disassembled into a paper tube 110 made of paper and a flange for roll paper made of synthetic resin (flanges 130A and 130B and the central shaft 140). . Thereby, the separate collection | recovery and disposal according to a material are attained. Furthermore, the volume (bulk) of the waste can be greatly reduced as compared with the case where the used roll paper assembly 100 is discarded without being disassembled.

  Thereafter, the flange main body 133 of the other flange 130B may be similarly cut along the spiral cutting line 152 and the annular cutting line 151 to disassemble the flange 130B and the central shaft 140. Thereby, the volume of waste can be further reduced. When it is not necessary to disassemble the other flange 130B and the center shaft 140, the cutting line 150 may not be formed on the other flange 130B, and the fitting portion 134 is not provided on the other flange 130B. In addition, the flange 130B and the middle shaft 140 may be configured integrally.

[1.6. Summary]
The roll paper assembly 100 according to the first embodiment of the present disclosure has been described in detail above. According to the present embodiment, the state of the roll paper assembly 100 (the remaining amount of paper, attachment) can be achieved with a simple and inexpensive configuration in which the flanges 130 having the ring-shaped convex portions 132 and the like formed on the outer surface are attached to both sides of the roll paper 120. Information on the status and the like) can be transmitted from the roll paper assembly 100 to the printer 1 side.

  In addition, since the two left and right flanges 130 are connected by the center shaft 140 communicated in the paper tube 110, both the flanges 130 can be stably attached to both ends of the paper tube 110 and the roll paper 120. Therefore, the flange 130 is not easily detached from the paper tube 110 and the roll paper 120 before and during use of the roll paper assembly 100.

  Furthermore, a cutting line 150 that can be easily cut is formed in advance on the flange 130 of the roll paper assembly 100. Thus, when the used roll paper assembly 100 is discarded, the flange 130 and the middle shaft 140 are disassembled by cutting the flange 130 along the cutting line 150, so that the paper tube 110, the flange 130, and the middle shaft are disassembled. 140 can be easily separated. Therefore, the remaining parts (paper tube 110, flange 130, and center shaft 140) of the roll paper assembly 100 after use can be easily disassembled and separated. Therefore, since the waste of the roll paper assembly 100 can be separately collected for each material, effective utilization and reuse of resources such as paper and synthetic resin can be promoted.

  Furthermore, since the used roll paper assembly 100 can be disassembled to the same extent as each component before assembly, the disassembly of the roll paper assembly 100 when discarded can be improved. Therefore, the volume of the waste of the roll paper assembly 100 can be reduced, and it can be prevented from being bulky. Therefore, it is possible to improve the efficiency of storage, transportation, disposal work, etc. of the waste.

<2. Second Embodiment>
Next, a roll paper assembly 200 according to the second embodiment of the present disclosure will be described. The second embodiment is characterized in that the cutting line 250 formed on the flange main body includes an annular cutting line 251 and a plurality of linear cutting lines 252. The linear cutting line 252 is an example of a connecting cutting line, and corresponds to the spiral cutting line 152 of the first embodiment. Compared with the roll paper assembly 100 according to the first embodiment, the roll paper assembly 200 according to the second embodiment mainly has a configuration of a connection cutting line (linear cutting line 252) and a central shaft 240. Since the other functional configuration is substantially the same as that of the first embodiment, detailed description thereof is omitted.

[2.1. Configuration of roll paper assembly]
First, the configuration of the roll paper assembly 200 according to the second embodiment will be described.

[2.1.1. Overall configuration of roll paper assembly]
First, an overall configuration of the roll paper assembly 200 according to the second embodiment will be described in detail with reference to FIGS. 24 to 26. FIG. 24 is an exploded perspective view of the roll paper assembly 200 according to the present embodiment, and FIG. 25 is an assembly perspective view of the roll paper assembly 200 according to the present embodiment. FIG. 26 is a cross-sectional view showing a joint between the flange 230 and the central shaft 240 of the roll paper assembly 200 according to the present embodiment. 24 to 26, illustration of the paper tube 110 and the roll paper 120 of the roll paper assembly 200 is omitted for convenience of explanation.

  24 and 25, the roll paper assembly 200 includes the paper tube 110 and the roll paper 120, and a pair of left and right flanges 230A and 230B (hereinafter, “ And a central shaft 240 that is inserted into the paper tube 110 and connects the pair of flanges 230A and 230B.

  The central shaft 240 according to the second embodiment is a circular bar-like member having a length equivalent to that of the paper tube 110. The outer diameter of the middle shaft 240 is smaller than the inner diameter of the paper tube 110, and the middle shaft 240 can be inserted into the paper tube 110. Further, both end portions 241A and 241B (hereinafter, may be collectively referred to as “end portion 241”) of the middle shaft 240 function as a joined portion for joining the flange 230 to the middle shaft 240.

  The middle shaft 240 is inserted into the hollow space in the paper tube 110, and one end 241A of the middle shaft 240 is joined to one flange 230A, and the other end 241B of the middle shaft 240 is joined to the other flange 230B. The middle shaft 240 in the illustrated example is a round bar-shaped member having a circular cross section, and the shape is different from the square middle shaft 140 according to the first embodiment, but is substantially the same in terms of function. The end 241 of the middle shaft 240 is also substantially cylindrical, and an annular recess 242 that fits with a fitting portion 234 of a flange 230 described later is formed on the outer periphery of the end 241.

  The flange 230 according to the second embodiment is the same as the flange 130 according to the first embodiment except for the shape of the fitting portion 234 and the configuration of a cutting line 250 described later. That is, the flange 230 includes a disk-shaped flange main body 233 and a fitting portion 234 that is a joint for joining the flange main body 233 to the central shaft 240. On the outer surface 233a of the flange main body 233, convex portions such as a ring-shaped convex portion 232 (corresponding to the ring-shaped convex portion 132) for detecting the state of the roll paper assembly 200 are formed to protrude. On the other hand, a cylindrical fitting portion 234 that fits with the end portion 241 of the center shaft 240 is formed to project from the center portion of the inner surface 233b of the flange main body 233.

  Here, the fitting portion 234 has a shape that can be inserted into the paper tube 110 and can be fitted with the end portion 241 of the middle shaft 240. In the illustrated example, the fitting portion 234 has the middle shaft 240. It has a cylindrical shape into which the end portion 241 can be inserted. As shown in FIG. 26, an annular locking claw 235 that fits into the recess 242 of the end 241 of the center shaft 240 is formed to protrude from the inner peripheral surface of the fitting portion 234.

  With such a fitting structure, the end portion 241 of the middle shaft 240 can be inserted into the fitting portion 234 of the flange 130 so that the concave portion 242 of the end portion 241 and the locking claw 235 of the fitting portion 234 can be fitted. . Thereby, since the end 241 of the middle shaft 240 is locked by the locking claw 235 of the fitting portion 234, the end 241 of the middle shaft 240 and the fitting portion 234 of the flange 230 can be firmly joined. Therefore, it is possible to prevent the flange 230 from being detached from the paper tube 110. Further, by using the fitting structure, the intermediate shaft 240 and the flange 230 can be joined relatively easily without using a separate joining member.

[2.1.2. Cutting line configuration]
Next, the cutting line 250 formed on the flange 230 according to the present embodiment will be described with reference to FIGS.

  As shown in FIGS. 24 to 26, the flange main body 233 of the flange 230 according to the present embodiment is formed with a cutting line 250 for separating the fitting portion 234 joined to the intermediate shaft 240 from the flange main body 233. Yes. The cutting line 250 includes an annular cutting line 251 formed around the fitting portion 234 in the flange main body 233, and two linear cutting lines 252 connecting the outer peripheral edge of the flange main body 233 and the annular cutting line 251. .

  The annular cutting line 251 is an annular cutting line formed to surround the entire circumference of the circular fitting portion 234 of the flange main body 233, for example, a circular cutting line. The annular cutting line 251 is inherent in the flange main body 233 without reaching the outer peripheral edge of the flange main body 233. The annular cutting line 251 is also preferably formed at a position as close as possible to the fitting portion 234, similarly to the annular cutting line 151 according to the first embodiment. Thereby, when the flange main body 233 is cut along the annular cutting line 251, the separated fitting portion 234 can be pulled out from the paper tube 110 together with the inner shaft 240.

  The straight cutting line 252 is an example of a connecting cutting line that connects the outer peripheral edge of the flange main body 233 and the annular cutting line 251. In the illustrated example, two linear cutting lines 252 are formed on the same straight line passing through the center of the flange main body 233. An end portion on the inner peripheral side of the linear cutting line 252 is connected to the annular cutting line 251, and a notch 253 is provided at an outer peripheral end portion (a position of the outer edge of the flange main body 233) of the linear cutting line 252. Is formed.

  The linear cutting line 252 has a function of guiding the cut end of the flange main body 233 from the outer peripheral edge of the flange main body 233 to the annular cutting line 251 similarly to the spiral cutting line 152 according to the first embodiment. That is, when the flange main body 233 is cut, first, the two cutouts 253 on the outer peripheral edge of the flange main body 233 are cut and cut along the two straight cutting lines 252 from both sides of the flange main body 233 to the annular cutting line 251. To do. Thereby, it becomes possible to cut | disconnect the circumference | surroundings of the fitting part 234 of the flange main body 233 along the cyclic | annular cutting line 251. FIG.

  In this way, by configuring the connection cutting line with two linear cutting lines 252, it is possible to easily cut the flange body 233 with a short cutting length from the outer peripheral edge of the flange body 233 to the annular cutting line 251. Become. The annular cutting line 251 and the linear cutting line 252 are also configured by the perforation 155 or the cutting guide cutting groove 156 (see FIGS. 14 and 15). For this reason, if an external force is applied to the flange 130 by the user, the annular cutting line 251 and the linear cutting line 252 can be easily cut.

  A plurality of arc-shaped slits 255 are formed in the middle of the annular cutting line 251. The slit 255 is an elongated gap that penetrates the flange main body 233 and is formed along the annular cutting line 251. Since the slit 255 can partially cut the annular cutting line 251 in advance, the cutting along the annular cutting line 251 can be performed more smoothly. Although not shown, a slit may be formed in a portion 254 where the linear cutting line 252 and the ring-shaped convex portion 232 intersect in the flange main body 233 (see the slit 157 in FIG. 16). Thereby, since the comparatively thick cross | intersection site | part 254 can be cut | disconnected previously, the cutting | disconnection of the flange main body 233 along the linear cutting line 252 can be performed more smoothly.

[2.2. Disassembly method of roll paper assembly]
Next, a method for disassembling the roll paper assembly 200 according to this embodiment will be described with reference to FIGS. 27 and 28 are a perspective view and a cross-sectional view showing the roll paper assembly 200 after the roll paper 120 according to the present embodiment is completely used. 29 and 30 are a perspective view and a sectional view showing the roll paper assembly 200 in a state where the flange 230A according to the present embodiment is separated.

  The method for assembling the roll paper assembly 200 according to the present embodiment is substantially the same as the method for assembling the roll paper assembly 100 according to the first embodiment, and a detailed description thereof will be omitted.

  As shown in FIGS. 27 and 28, when all of the roll paper 120 of the roll paper assembly 200 is used and the remaining amount of the roll paper 120 runs out, the paper tube 110 is exposed between the pair of flanges 230A and 230B. It becomes a state. A procedure for disassembling the roll paper assembly 200 in this state into the paper tube 110, the flange 230A, the flange 230B, and the middle shaft 240 will be described.

  First, the user applies force to the flange main body 233 of one flange 230 </ b> A in a direction to separate from the paper tube 110. Thereby, the flange main body 233 of one flange 230A is cut along the cutting line 250 to separate the flange main body 233 from the central shaft 240 and the paper tube 110.

  Specifically, first, the flange body 233 is linearly formed from the outer peripheral side to the inner peripheral side along the two linear cutting lines 252 using the two notches 253 on the outer peripheral edge of the flange main body 233 of the flange 230A. Disconnect. Next, after the cutting portion along the linear cutting line 252 reaches the annular cutting line 251, the entire periphery of the fitting portion 234 of the flange main body 233 is annularly cut along the annular cutting line 251. At this time, since the plurality of slits 255 are formed in advance in a part of the annular cutting line 251, cutting along the annular cutting line 251 can be easily performed.

  As a result, as shown in FIGS. 29 and 30, the flange main body 233 is completely cut along the annular cutting line 251 to separate the flange main body 233 from the fitting portion 234 and the middle shaft 240. At this time, the fitting portion 234 is still in a state of being fitted to the middle shaft 240. In addition, a portion 233c on the inner peripheral side of the flange main body 233 inside the annular cutting line 251 remains around the fitting portion 234, but the outer diameter of the portion 233c is larger than the inner diameter of the paper tube 110. If it is smaller, the portion 233c can pass through the paper tube 110, so that there is no problem in the subsequent disassembling work.

  Thereafter, as shown in FIG. 30, the fitting portion 234 and the middle shaft 240 are pulled out from the paper tube 110 while the fitting portion 234 separated from the flange main body 233 and the middle shaft 240 remain joined. Thereby, the roll paper assembly 200 is disassembled into the flange main body 233 of the flange 230A, the paper tube 110, the middle shaft 140, and the flange 230B. Thereafter, the flange body 233 of the other flange 230B may be similarly cut along the linear cutting line 252 and the annular cutting line 251 to disassemble the flange 230B and the central shaft 240.

  As described above, the used roll paper assembly 200 can be easily disassembled into a paper tube 110 made of paper and a roll paper flange made of synthetic resin (flanges 230A and 230B and the central shaft 240). . Thereby, the separate collection | recovery and disposal according to a material are attained. Further, the volume (bulk) of the waste can be greatly reduced as compared with the case where the used roll paper assembly 200 is discarded without being disassembled.

[2.3. Example of change]
Next, a modified example of the flange 230 of the roll paper assembly 200 according to the present embodiment will be described with reference to FIG. FIG. 31 is a perspective view showing a modified example of the flange 230 of the roll paper assembly 200 according to the present embodiment.

  In the example shown in FIG. 31A, a rectangular fitting portion 236 is provided at the center of the flange main body 233. On the inner surface of the fitting portion 236, a locking claw 237 for locking the concave portion 142 of the end portion 141 of the rectangular middle shaft 140 is formed. An oblong annular cutting line 251 is formed around the rectangular fitting portion 236, and two arc-shaped slits 255 are formed in the middle of the annular cutting line 251. The two slits 255 are arranged symmetrically on one side and the other side in the longitudinal direction of the fitting portion 236. Further, two linear cutting lines 252 are formed so as to connect the outer edge of the flange main body 233 and the two slits 255 of the annular cutting line 251. The two linear cutting lines 252 are arranged on the same straight line passing through the center of the flange main body 233.

  With this configuration, the flange main body 233 is cut along the two linear cutting lines 252, and the periphery of the rectangular fitting portion 236 of the flange main body 233 is formed in a rectangular shape along the annular cutting line 251 and the slit 255. Can be cut.

  In the example shown in FIG. 31B, a circular fitting portion 234 is provided at the center portion of the flange main body 233. An annular locking claw 235 for locking the annular recess 242 of the end 241 of the circular center shaft 240 is formed on the inner peripheral surface of the fitting portion 234. A circular annular cutting line 251 is formed around the circular fitting portion 234, and four arc-shaped slits 255 are formed in the middle of the annular cutting line 251. The four slits 255 are arranged at equal intervals in the circumferential direction of the circular fitting portion 234. Further, four linear cutting lines 252 are formed so as to connect the outer edge of the flange main body 233 and the four slits 255 of the annular cutting line 251. The two linear cutting lines 252 are arranged at equal intervals in the circumferential direction so as to extend radially from the center of the flange main body 233.

  With this configuration, the flange body 233 is cut along the four straight cutting lines 252, and the periphery of the circular fitting portion 234 of the flange body 233 is cut into a circle along the annular cutting line 251 and the slit 255. can do.

  In the example shown in FIG. 31C, a rectangular fitting portion 236 is provided at the center portion of the flange main body 233. On the inner surface of the fitting portion 236, a locking claw 237 for locking the concave portion 142 of the end portion 141 of the rectangular middle shaft 140 is formed. A rectangular annular cutting line 251 is formed around the rectangular fitting portion 236, and four L-shaped slits 257 are formed at each corner portion of the annular cutting line 251. Further, two linear cutting lines 252 are formed so as to connect the outer edge of the flange main body 233 and the two slits 257 of the annular cutting line 251. The two straight cutting lines 252 are offset from a straight line passing through the center of the flange main body 233 and extend from the slit 257 to the outer edge of the flange main body 233 in a direction parallel to the long side of the rectangular annular cutting line 251. Yes.

  With this configuration, the flange main body 233 is cut along the two linear cutting lines 252, and the periphery of the rectangular fitting portion 236 of the flange main body 233 is formed in a rectangular shape along the annular cutting line 251 and the slit 257. Can be cut.

  In addition, although the example which forms the slits 255 and 257 in the middle of the cyclic | annular cutting line 251 was demonstrated above, a slit does not necessarily need to be formed. Moreover, although the example which forms the several linear cutting line 252 was demonstrated, you may form only one linear cutting line. Further, the connecting cutting line is not limited to the example of the linear cutting line 252, but may be a cutting line having an arbitrary shape such as a curved line or a jagged shape.

[2.4. Summary]
The roll paper assembly 200 according to the second embodiment of the present disclosure has been described in detail above. The roll paper assembly 200 according to the second embodiment has the following effects in addition to the effects of the roll paper assembly 100 according to the first embodiment.

  According to the second embodiment, the connecting cutting line that connects the outer edge of the flange main body 233 and the annular cutting line 251 is configured by the linear cutting line 252. Thereby, since the flange main body 233 may be cut linearly along the straight cutting line 252, the cutting operation from the outer edge of the flange main body 233 to the annular cutting line 251 is easy. Moreover, since the flange main body 233 can be cut into small portions by forming a plurality of linear cutting lines 252, the cutting operation of the flange main body 233 is further facilitated.

<3. Third Embodiment>
Next, a roll paper assembly according to a third embodiment of the present disclosure will be described. In the third embodiment, the cutting line formed on the flange main body is only the annular cutting line 351, and the connecting cutting line connecting the annular cutting line 351 and the outer edge of the flange main body (the above spiral cutting line 152, linear shape). The cutting line 252) is not formed. The roll paper assembly according to the third embodiment is different from the roll paper assembly 100 according to the first embodiment mainly in that a connection cutting line is not formed, and other functional configurations. Is substantially the same as that of the first embodiment, and detailed description thereof is omitted.

[3.1. Cutting line configuration]
First, with reference to FIG. 32, the cutting line formed in the flange 330 which concerns on 3rd Embodiment is demonstrated. FIG. 32 is a perspective view showing the flange 330 of the roll paper assembly according to the present embodiment.

  As shown in FIG. 32, the flange 330 according to the third embodiment is the same as the flange 130 according to the first embodiment except for the configuration of the cutting line. That is, the flange 330 includes a disc-shaped flange main body 333 and fitting portions 334 and 336 which are joints for joining the flange main body 333 to the center shaft 140. On the outer surface 333a of the flange main body 333, convex portions such as a ring-shaped convex portion 332 (corresponding to the ring-shaped convex portion 132) for detecting the state of the roll paper assembly are formed to protrude. On the other hand, in the central portion of the inner surface of the flange main body 333, quadrangular cylindrical or cylindrical fitting portions 334 and 336 that fit into the end portion 141 of the center shaft 140 are formed so as to protrude.

  As shown in FIG. 32, the flange main body 333 of the flange 330 according to this embodiment has an annular cutting line 351 as a cutting line for separating the fitting portions 334 and 336 joined to the center shaft 140 from the flange main body 333. Only formed. The annular cutting line 351 is an annular cutting line formed so as to surround the entire periphery of the fitting portions 334 and 336 in the flange main body 333. The annular cutting line 351 is inherent in the flange main body 333 without reaching the outer peripheral edge of the flange main body 333.

  Specifically, in the example shown in FIG. 32A, a square tubular fitting portion 334 is provided at the center of the flange main body 333. On the inner surface of the fitting portion 334, a locking claw 335 for locking the concave portion 142 of the end portion 141 of the square central shaft 140 is formed. An elliptical annular cutting line 351 is formed around the rectangular fitting portion 334, and two elliptical arc-shaped slits 355 are formed in the middle of the annular cutting line 351. The two slits 355 are arranged symmetrically on one side and the other side in the longitudinal direction of the fitting portion 334.

  In the example shown in FIG. 32B, a cylindrical fitting portion 336 is provided at the center of the flange main body 333. An annular locking claw 337 for locking the annular recess 242 of the end 241 of the circular center shaft 240 is formed on the inner peripheral surface of the fitting portion 334. A circular annular cutting line 351 is formed around the circular fitting portion 336, and four arc-shaped slits 355 are formed in the middle of the annular cutting line 351. The four slits 355 are arranged at equal intervals in the circumferential direction of the circular fitting portion 334.

  As described above, in the flange 330 according to the present embodiment, only the annular cutting line 351 is formed, and the connection cutting line connecting the annular cutting line 351 and the outer peripheral edge of the flange main body 333 is not formed. Even with this configuration, the entire periphery of the fitting portions 334 and 336 of the flange body 333 can be cut along the annular cutting line 351 to separate the fitting portions 334 and 336 joined to the center shaft 140 from the flange body 333. Is possible.

  That is, when the roll paper assembly according to the present embodiment is separated, a force is applied to the flange main body 233 of the flange 330 in the direction of separating from the paper tube 110 to deform the outer peripheral portion of the flange main body 333. . That is, an external force that peels the flange main body 333 from the paper tube 110 is applied to the flange main body 333. The external force directly distorts the peripheral portions of the fitting portions 334 and 336 fitted to the middle shaft 140, so that cutting is started from one side of the annular cutting line 351 existing in the relevant portion. Thus, the flange main body 333 is cut along the annular cutting line 351.

  At this time, since the slit 355 is formed in advance in the annular cutting line 351, the cutting of the flange main body 133 along the annular cutting line 351 is easily started from the slit 355 as a starting point. Further, when the annular cutting line 351 is a circular ring having a circular shape, an elliptical shape, or the like, an external force is easily concentrated on one point of the annular cutting line 351 so that the cutting can be easily started.

  As described above, when the flange main body 333 is cut along the annular cutting line 351 by applying a force to the flange main body 333, the fitting portions 334 and 336 and the flange main body 133 can be separated. Accordingly, in the same manner as in the first and second embodiments, the fitting portions 334 and 336 and the middle shaft are kept in a state where the fitting portions 334 and 336 separated from the flange main body 333 and the middle shaft 140 are joined. 140 is pulled out of the paper tube 110. As a result, the roll paper assembly is disassembled into the flange main body 333 of the one flange 330, the paper tube 110, the center shaft 140, and the other flange 330. Thereafter, the flange main body 333 of the other flange 330 may be similarly cut along the annular cutting line 351 to disassemble the flange 330 and the central shaft 140.

  As described above, the used roll paper assembly can be easily disassembled into a paper tube 110 made of paper and a roll paper flange made of synthetic resin (flanges 330 and 330 and the central shaft 140). Thereby, the separate collection | recovery and disposal according to a material are attained. Furthermore, the volume (bulk) of the waste can be greatly reduced as compared with the case where the used roll paper assembly is discarded without being disassembled.

[3.2. Summary]
The roll paper assembly according to the third embodiment of the present disclosure has been described in detail above. The roll paper assembly according to the third embodiment has the following effects in addition to the effects of the roll paper assembly 100 according to the first embodiment.

  According to the third embodiment, only the annular cutting line 351 may be formed as the cutting line of the flange main body 333, and the connection cutting line need not be formed. Therefore, it is possible to reduce the load and cost of the processing work of the flange 330. Moreover, since the connection cutting line is not formed, the strength of the flange main body 333 can be increased. Therefore, it is possible to prevent the flange main body 333 from being unexpectedly cut off before and during use of the roll paper assembly, and the flange 330 from being detached from the paper tube 110.

<4. Fourth Embodiment>
Next, a roll paper assembly according to a fourth embodiment of the present disclosure will be described. In the fourth embodiment, the cutting line formed on the flange main body is only the dividing cutting line 451, and the annular cutting lines 151, 251 and 351 and the connecting cutting lines (the spiral cutting line 152, the linear cutting line). 252) is not formed. The roll paper assembly according to the fourth embodiment is different from the roll paper assembly 100 according to the first embodiment mainly in that a dividing cutting line 451 is formed, and other functions. Since the configuration is substantially the same as that of the first embodiment, detailed description thereof is omitted.

[4.1. Cutting line configuration]
First, with reference to FIG. 33 and FIG. 34, the parting line 451 formed in the flange 430 according to the fourth embodiment will be described. FIG. 33 is a perspective view showing the flange 430 of the roll paper assembly according to this embodiment. FIG. 34 is a perspective view showing the fitting portion 434 of the flange 430 according to the present embodiment.

  As shown in FIGS. 33 and 34, the flange 430 according to the fourth embodiment is the same as the flange 130 according to the first embodiment except for the configuration of the cutting line. That is, the flange 430 includes a disk-shaped flange main body 433 and fitting portions 434 and 436 which are joint portions for joining the flange main body 433 to the central shaft 140. On the outer surface 433a of the flange main body 433, convex portions such as a ring-shaped convex portion 432 (corresponding to the ring-shaped convex portion 132) for detecting the state of the roll paper assembly are formed to protrude. On the other hand, a square tubular fitting portion 434 that fits with the end portion 141 of the center shaft 140 is formed to protrude at the center of the inner surface of the flange main body 433.

  In the flange main body 433 of the flange 430 according to the present embodiment, only a dividing cutting line 451 is formed as a cutting line for separating a part of the fitting portion 434 joined to the center shaft 140 from the flange main body 433. . The dividing cutting line 451 is a cutting line formed so as to divide the flange main body 433 and the fitting portion 434. In the example of FIG. 33, two linear dividing cutting lines 451 extending from the outer peripheral edge on one side and the other side of the flange main body 433 to the fitting portion 434 are formed. By cutting the flange main body 433 and the fitting portion 434 along the dividing cutting line 451, the fitting portion 434 fitted to the middle shaft 140 can be broken.

  Specifically, as shown in FIG. 34, a square tubular fitting portion 434 projects from the center of the inner surface 433b of the flange main body 433. The fitting portion 434 can insert the end portion 141 of the middle shaft 140, and a locking claw 435 that fits the recess 142 of the end portion 141 of the middle shaft 140 is formed on the inner surface of the fitting portion 434. . The fitting portion 434 is fitted with the end portion 141 of the middle shaft 140 by locking the concave portion 142 with the locking claw 435.

  By separating one side surface 434a of the fitting portion 434 and destroying the fitting portion 434, the fitting portion 434 and the end portion 141 of the central shaft 140 can be separated. For this reason, in this embodiment, the parting cutting line 451 is formed in the flange main body 433, and the cutting | disconnection from the outer edge of the flange main body 433 to the fitting part 434 is enabled. Further, cuts 452 and 452 are formed in the corner portions on both sides of one side surface 434a of the rectangular tubular fitting portion 434.

  With this configuration, if the flange main body 433 is cut along the two cutting lines 451 and 451, the two cutting lines 451 and the two cuts 452 and 452 are connected, and the flange main body 433 and the fitting portion 434 are connected. Divided. That is, not only the flange main body 133 is separated into two members, but also the fitting portion 434 is separated into two members (side surface 434a and side surfaces 434b, 434c, 434d) and destroyed. Thereby, the fitting structure between the end portion 141 of the middle shaft 140 and the fitting portion 434 is also destroyed, so that the middle shaft 140 can be separated from the flange main body 433.

  On the other hand, FIG. 35 is a perspective view showing the fitting portion 234 of the flange 230 of FIG. 31A according to the second embodiment. As shown in FIG. 35, in the second embodiment, an annular cutting line 251 and a slit 255 are formed around the flange 230, and a linear cutting that connects the slit 255 of the annular cutting line 251 and the outer edge of the flange main body 233. A line 252 is formed. According to such a configuration, the fitting portion 234 and the flange body 233 can be separated by cutting the flange body 233 along the annular cutting line 251 and the linear cutting line 252. Therefore, it is not necessary to form the notches 452 (see FIG. 34) at the corners of the rectangular tubular fitting part 234.

  However, in the flange 430 according to the fourth embodiment, the fitting portion 434 is also broken by dividing the square tubular fitting portion 434, so that the middle shaft 140 and the flange main body 433 can be separated. Therefore, in the fourth embodiment, the cutting line 451 is formed in the flange main body 433, and the cut 452 is formed in the corner portion of the fitting portion 434. In addition, instead of the cut 452, the cut-off line 451 is formed to extend to the fitting part 434, and both the flange main body 433 and the fitting part 434 are cut along the cut-off line 451. Also good.

  As described above, in the fourth embodiment, the flange main body 433 and the fitting portion 434 can be divided by the dividing cutting line 451 and the notch 452, and the fitting portion 434 can be destroyed. Thereby, since the flange 430 and the center shaft 140 can be separated, the roll paper assembly can be suitably disassembled. That is, if a force is applied to the flange main body 433 and the flange main body 433 is cut along the cutting line 451, the fitting portion 434 is partially (side surface 434a) and the remaining portions (side surfaces 434b, 434c, 434d). And can be divided.

  With the structure of the flange 430, the used roll paper assembly can be disassembled. Specifically, first, the flange main body 433 is cut along the dividing cutting line 451 of one flange 430, the fitting portion 434 is broken, and the flange 430 and the central shaft 140 are separated. Then, the middle shaft 140 is pulled out from the paper tube 110. As a result, the roll paper assembly is disassembled into one flange 430, the paper tube 110, the center shaft 140 and the other flange 430. Thereafter, the flange main body 433 of the other flange 430 may be similarly cut along the cutting line 451 to disassemble the flange 430 and the central shaft 140.

  As described above, the used roll paper assembly can be easily disassembled into the paper tube 110 made of paper and the flange for the roll paper made of synthetic resin (the flanges 430 and 430 and the central shaft 140). Thereby, the separate collection | recovery and disposal according to a material are attained. Furthermore, the volume (bulk) of the waste can be greatly reduced as compared with the case where the used roll paper assembly is discarded without being disassembled.

[4.2. Example of change]
Next, a modified example of the flange 430 of the roll paper assembly according to the present embodiment will be described with reference to FIG. FIG. 36 is a perspective view showing a modified example of the flange 430 of the roll paper assembly according to the present embodiment.

  In the example shown in FIG. 36, a circular fitting portion 436 is provided at the center portion of the flange main body 433. An annular locking claw 437 for locking the annular recess 242 of the end 241 of the center shaft 240 is formed on the inner surface of the fitting portion 436. And the two parting cutting lines 451 are formed so that the said circular fitting part 436 and the flange main body 433 may be parted. The two dividing cutting lines 451 are formed at positions where the center of the circular fitting portion 436 is divided.

  With such a configuration, the flange portion 133 is cut along the two cutting lines 451, and the fitting portion 436 is also cut along the cutting lines 451, whereby the fitting portion 436 can be broken. Thereby, the middle shaft 140 and the flange main body 433 that are joined to the fitting portion 436 can be separated.

[4.3. Summary]
The roll paper assembly according to the fourth embodiment of the present disclosure has been described in detail above. The roll paper assembly according to the fourth embodiment has the following effects in addition to the effects of the roll paper assembly 100 according to the first embodiment.

  According to the fourth embodiment, only the cutting line 451 may be formed as the cutting line of the flange body 433, and other cutting lines need not be formed. Therefore, it is possible to reduce the load and cost of the processing operation of the flange 430.

  The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the technical scope of the present disclosure is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field of the present disclosure can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that it belongs to the technical scope of the present disclosure.

  The following configurations also belong to the technical scope of the present disclosure.

(1) paper tube,
Roll paper wound around the paper tube;
A pair of flanges disposed at both ends of the paper tube;
A central shaft that is inserted into the paper tube and connects the pair of flanges;
With
At least one of the flanges is
A flange body that covers an end surface of the roll paper;
A joint portion provided at the center of the inner surface of the flange body, to which an end of the middle shaft is joined;
With
A roll paper assembly, wherein the flange main body is formed with a cutting line for separating the joint portion joined to the middle shaft from the flange main body.

(2) The roll paper assembly according to (1), wherein the cutting line includes an annular cutting line formed around the joint in the flange body.

(3) The roll paper assembly according to (2), wherein the cutting line includes one or more connecting cutting lines that connect an outer edge of the flange main body and the annular cutting line.

(4) The roll paper assembly can be attached to a holder provided in a printing apparatus;
On the outer surface of the flange body, a convex portion that is detected by a sensor installed in the holder is formed,
The roll paper assembly according to (3), wherein the connection cutting line is formed so as to intersect the convex portion.

(5) The roll paper assembly according to (4), wherein a slit is formed at a portion where the connection cutting line and the convex portion intersect in the flange main body.

(6) The roll according to any one of (3) to (5), wherein the connection cutting line is a spiral cutting line that connects an outer edge of the flange body and the annular cutting line. Paper assembly.

(7) The roll according to any one of (3) to (5), wherein the connection cutting line is a plurality of linear cutting lines that connect an outer edge of the flange main body and the annular cutting line. Paper assembly.

(8) The roll paper assembly according to any one of (2) to (7), wherein one or more slits are formed in the middle of the annular cutting line.

(9) The roll paper assembly according to any one of (1) to (8), wherein the joint portion includes a fitting portion that is fitted to an end portion of the central shaft.

(10) The roll paper assembly according to (9), wherein the cutting line includes a cutting line that divides the flange main body and the fitting portion.

(11) The roll paper assembly according to any one of (1) to (10), wherein the cutting line is a perforation or a cutting guide kerf.

(12) When a force is applied to the flange body in a direction separating from the paper tube, the flange body is cut along the cutting line, and at least the joint portion joined to the center shaft The roll paper assembly according to any one of (1) to (11), wherein a part is separated from the flange main body.

(13) a pair of flanges disposed at both ends of the paper tube around which the roll paper is wound;
A central shaft that is inserted axially into the paper tube and connects the pair of flanges;
With
At least one of the flanges is
A flange body that covers an end surface of the roll paper;
A joint portion provided at the center of the inner surface of the flange body, to which an end of the middle shaft is joined;
With
A flange for a roll paper, wherein a cutting line for separating the joint portion joined to the middle shaft from the flange body is formed in the flange body.

DESCRIPTION OF SYMBOLS 1 Printer 5 Roll paper holder 6 Sensor 61, 62 Contact sensor 100, 200 Roll paper assembly 110 Paper tube 120 Roll paper 130, 230, 330, 430 Flange 131 Boss-shaped convex part 132, 232, 332, 432 Ring-shaped convex part 133, 233, 333, 433 Flange body 134, 234, 236, 334, 336, 434, 436 Fitting part 135, 235, 335, 435 Locking claw 140, 240 Middle shaft 141, 241 End part 142, 242 Recessed part 150, 250 cutting line 151, 251 and 351 annular cutting line 152 spiral cutting line 155 perforation 156 cutting guide cutting groove 157 slit 252 linear cutting line 255, 257, 355 slit 451 dividing cutting line

Claims (13)

A paper tube,
Roll paper wound around the paper tube;
A pair of flanges disposed at both ends of the paper tube;
A central shaft that is inserted into the paper tube and connects the pair of flanges;
With
At least one of the flanges is
A flange body that covers an end surface of the roll paper;
A joint portion provided at the center of the inner surface of the flange body, to which an end of the middle shaft is joined;
With
A roll paper assembly, wherein the flange main body is formed with a cutting line for separating the joint portion joined to the middle shaft from the flange main body.   The roll paper assembly according to claim 1, wherein the cutting line includes an annular cutting line formed around the joint in the flange body.   The roll paper assembly according to claim 2, wherein the cutting line includes one or more connecting cutting lines that connect an outer edge of the flange body and the annular cutting line. The roll paper assembly can be attached to a holder provided in a printing apparatus,
On the outer surface of the flange body, a convex portion that is detected by a sensor installed in the holder is formed,
The roll paper assembly according to claim 3, wherein the connection cutting line is formed so as to intersect the convex portion.   The roll paper assembly according to claim 4, wherein a slit is formed at a portion of the flange main body where the connection cutting line and the convex portion intersect.   The roll paper assembly according to claim 3, wherein the connection cutting line is a spiral cutting line that connects an outer edge of the flange main body and the annular cutting line.   The roll paper assembly according to claim 3, wherein the connection cutting line is a plurality of linear cutting lines that connect an outer edge of the flange main body and the annular cutting line.   The roll paper assembly according to claim 2, wherein one or more slits are formed in the middle of the annular cutting line.   The roll paper assembly according to claim 1, wherein the joint portion includes a fitting portion that fits with an end portion of the central shaft.   The roll paper assembly according to claim 9, wherein the cutting line includes a cutting line that divides the flange main body and the fitting portion.   The roll paper assembly according to claim 1, wherein the cutting line is a perforation or a cutting guide groove.   When a force is applied to the flange body in a direction separating from the paper tube, the flange body is cut along the cutting line, and at least a part of the joint portion joined to the middle shaft is The roll paper assembly of claim 1 separated from the flange body. A pair of flanges disposed at both ends of the paper tube around which the roll paper is wound;
A central shaft that is inserted axially into the paper tube and connects the pair of flanges;
With
At least one of the flanges is
A flange body that covers an end surface of the roll paper;
A joint portion provided at the center of the inner surface of the flange body, to which an end of the middle shaft is joined;
With
A flange for a roll paper, wherein a cutting line for separating the joint portion joined to the middle shaft from the flange body is formed in the flange body.

Images