Packing case, toner container, and method for assembling packing case

Abstract

The invention relates to a packaging box, a toner container, and an assembling method of the packaging box, which can fully fix a packaged body packaged in the packaging box without increasing the cost of the packaging box or complicating the packaging box, and without reducing the taking-out property of the packaged body from the packaging box. A toner container (30) (to-be-packaged body) is formed into a polygonal cylindrical packaging box (50) which can be packaged therein and is provided with folding marks on a flat plate component to form side parts M1-M4. And at least two side portions (M1, M3) among a plurality of side portions (M1 to M4) on one end side in the longitudinal direction and at least two side portions (M2, M4) among a plurality of side portions (M1 to M4) on the other end side in the longitudinal direction, which are different from the side portions (M1, M3) on the one end side, respectively, with the direction in which the square tube extends as the longitudinal direction. Holding portions (52A), (52B), (53A), (53B) that protrude inward and can hold the toner container (30) are formed in the toner container (30).

Description

Technical Field

[0001] The present invention relates to a packaging box for packaging a packaged body such as a toner container, the packaged toner container, and an assembling method of the packaging box. Background Art

[0002] Conventionally, there is known a packaging box for packaging a toner container (packaged object) which is detachably mounted on an image forming apparatus such as a copier or a printer (for example, see Patent Document 1).

[0003] Then, such a packaging box is transported from a manufacturing plant to a transportation destination (carry-in destination) such as a user in a state where the toner container (packaged body) is packaged therein.

[0004] On the other hand, Patent Document 1 discloses a technology in which a cushioning material is provided inside the packaging component to fill the gap between the packaging component and the colorant container in order to prevent impacts during transportation from being transmitted to the colorant container (packaged body) packaged inside the packaging component (packaging box).

[0005] Since the cushioning material is provided inside the packaging member in the technology of Patent Document 1, it can be expected that there will be an effect of firmly fixing the packaged object packaged inside.

[0006] However, the provision of the cushioning material increases the cost and complexity of the packaging box, and also makes it difficult to remove the packaged object from the packaging box.

[0007] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide a packaging box, a colorant container and an assembly method of the packaging box, which can fully fix the packaged body packaged inside without increasing the cost and complexity of the packaging box and without reducing the removal efficiency of the packaged body from the packaging box.

[0008] [Patent Document 1] (Japanese) Patent Publication No. 2012-121604 Summary of the invention

[0009] The packaging box in the present invention is a polygonal tubular packaging box in which a packaged body is formed so as to be packaged inside and edges are formed by folding a flat plate component. A retaining portion that protrudes inward and can retain the packaged body is formed at positions corresponding to at least two of the multiple edges on one end side of the length direction when the length direction in which the square tube extends is the length direction, and at least two of the multiple edges on the other end side of the length direction that are different from the one end side.

[0010] According to the present invention, a packaging box, a colorant container, and a packaging box assembling method can be provided, which can fully fix the packaged object packaged inside without increasing the cost and complexity of the packaging box and without reducing the ease of taking out the packaged object from the packaging box. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. 1 is a diagram showing the overall configuration of an image forming apparatus according to an embodiment of the present invention.

[0012] Figure 2 (A)-(B) are schematic perspective views of a packaging box in which a toner container is packaged.

[0013] Figure 3 Shown is a top view of the flat panel components prior to assembly of the packaging box.

[0014] Figure 4 (A)-(B) are three-dimensional views showing a portion of the action of assembling the packaging box.

[0015] Figure 5 (A) is a cross-sectional view of a packaging box in which a colorant container is packaged along the length direction, (B) is a view of the packaging box as viewed from the A direction, and (C) is a view of the packaging box as viewed from the B direction.

[0016] Figure 6 Shown is a perspective view of the action of taking out the toner container from the packaging box.

[0017] Figure 7 (A)-(B) are views showing a packaging box in which a toner container is packaged as a comparative example, as viewed from one end side in the longitudinal direction.

[0018] Figure 8 FIG. 1 is a diagram showing a packaging box in which a toner container is packaged as a modified example in the longitudinal direction. DETAILED DESCRIPTION

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and their detailed descriptions are appropriately omitted.

[0020] First, through Figure 1 The overall configuration and operation of the image forming apparatus 1 will be described.

[0021] exist Figure 1In the figure, 1 denotes a copier as an image forming apparatus, 2 denotes a document reading section for optically reading image information of a document D, 3 denotes an exposure section for irradiating an exposure light L based on the image information read by the document reading section 2 onto a photosensitive drum 5, 4 denotes an imaging section for forming a colorant image (image) on the photosensitive drum 5, and 7 denotes a transfer section (image forming section) for transferring the colorant image formed on the photosensitive drum 5 onto a sheet P.

[0022] In addition, 10 represents a document conveying section (automatic document conveying device) that conveys the placed document D to the document reading section 2, 12 represents a sheet supply device that supplies sheets P accommodated in a paper supply card box, and 13 represents a sheet supply device for manual paper feeding that protrudes to the side of the image forming apparatus body 1.

[0023] In addition, 16 denotes a pair of conveying rollers located on the downstream side of the supply mechanism 45, 17 denotes a pair of registration rollers (timing rollers) for conveying the sheet P to the transfer section 7, 20 denotes a fixing device for fixing the toner image (unfixed image) carried on the sheet P, 21 denotes a fixing roller provided in the fixing device 20, 22 denotes a pressure roller provided in the fixing device 20, and 25 denotes a discharge tray for loading the sheet P discharged from the apparatus main body 1. In addition, 30 denotes a toner container provided detachably (replaceably) with respect to the image forming apparatus 1.

[0024] In addition, reference numeral 42 denotes a placing portion (elevating plate) configured to be able to be raised and lowered in the sheet feeding device 12 , and reference numeral 45 denotes a feeding mechanism provided in the sheet feeding device 12 .

[0025] In addition, reference numeral 100 denotes an operation display panel for inputting the content of a printing operation to be executed in the image forming apparatus 1 or displaying the status of the image forming apparatus 1 .

[0026] Reference Figure 1 , the operation during normal image forming (printing) in the image forming apparatus main body 1 will be described.

[0027] First, the document D is conveyed (fed) from the document table in the direction of the arrow in the figure by the conveying rollers of the document conveying unit 10 and passes over the document reading unit 2. At this time, the document reading unit 2 optically reads the image information of the document D passing over it.

[0028] Then, the optical image information read by the manuscript reading section 2 is converted into an electrical signal and sent to the exposure section 3 (writing section). Then, from the exposure section 3, an exposure beam L such as a laser based on the image information of the electrical signal is emitted toward the photosensitive drum 5 of the imaging section 4.

[0029] On the other hand, in the imaging unit 4, the photosensitive drum 5 is Figure 1The photosensitive drum 5 rotates in the clockwise direction and after going through the prescribed imaging steps (charging step, exposure step, development step), an image (toner image) corresponding to the image information is formed on the photosensitive drum 5.

[0030] Then, the image formed on the photosensitive drum 5 is transferred to the sheet P conveyed by the registration roller pair 17 in the transfer section 7 .

[0031] In addition, the imaging unit 4 includes a charging device, a developing device, a cleaning device, a neutralizing device, etc. in addition to the transfer unit 7. Then, new toner is appropriately supplied to the developing device from the toner container 30. The toner container 30 is formed in a substantially cylindrical shape, and when the toner contained therein becomes empty, it is replaced with a new toner container 30.

[0032] The toner container 30 is distributed in the market as a single unit and is packaged in a packaging box 50 (see Figure 2 The products are shipped from the manufacturing plant to the destination such as the user or service base in the state of (etc.).

[0033] On the other hand, the sheet P conveyed to the transfer section 7 (image forming section) moves as follows.

[0034] First, one of the plurality of sheet feeders 12 and 13 of the image forming apparatus main body 1 is automatically or manually selected (for example, it is assumed that the sheet feeder 12 in the apparatus main body is selected). Then, the top sheet of the sheets P stored in the sheet feeder 12 is fed by the feed mechanism 45 and conveyed toward the conveying path K. Then, the sheet P passes through the conveying path K provided with the conveying roller pair 16 and reaches the position of the registration roller pair 17. At this time, the registration roller pair 17 is in a state of rotation stop, and the oblique movement (skew) of the sheet P is corrected by the front end of the sheet P hitting its clamping portion.

[0035] Thereafter, the registration roller pair 17 starts to rotate, and the sheet P is conveyed toward the transfer section 7 (image forming section) at the registration timing in order to align the position of the sheet P with the image formed on the photosensitive drum 5. Then, in the transfer section 7, the image on the photosensitive drum 5 is transferred to the sheet P (transfer process).

[0036] Then, after the transfer process, the sheet P passes through the position of the transfer section 7 and reaches the fixing device 20 through the conveying path. The sheet P that reaches the fixing device 20 is fed between the fixing roller 21 and the pressure roller 22, and the toner image is fixed by the heat from the fixing roller 21 and the pressure of both components 21 and 22 (fixing process). After the fixing process of fixing the toner image, the sheet P is fed out from between the fixing roller 21 and the pressure roller 22 (fixing nip), and is discharged from the image forming apparatus main body 1 and placed on the discharge tray 25 as an output image.

[0037] In this way, a series of image forming processes (printing operations) are completed.

[0038] Hereinafter, the packaging box 50 for a toner container which is characteristic of the present embodiment will be described in detail.

[0039] As previously used Figure 1 As described above, in the image forming apparatus 1 according to the present embodiment, the toner container 30 is used as a consumable part.

[0040] That is, the toner container 30 is installed in the image forming apparatus 1 when the user starts using the image forming apparatus 1 .

[0041] When the toner container 30 becomes empty after the image forming apparatus 1 starts to be used, the toner container 30 is removed from the image forming apparatus 1 and replaced with a new toner container 30 (a container filled with toner).

[0042] Here, the toner container 30 as a packaged body is as follows before installation. Figure 2 As shown in the figure, it is housed (packaged) in a packaging box 50.

[0043] like Figure 2 As shown in (B), Figure 2 A new toner container 30 (packaged body) is housed in the packaging box 50 shown in FIG. 1 . The new toner container 30 is then transported to a user or stored at a user's storage location while being housed in the packaging box 50 .

[0044] Then, when the user starts to use the image forming apparatus 1 , the user takes out the toner container 30 from the packaging box 50 and installs (replaces) it in the image forming apparatus 1 .

[0045] The packaging box 50 in the present embodiment is formed in a polygonal tube shape (in the present embodiment, a quadrangular tube shape) so as to package the toner container 30 (containing toner) as a packaged body therein.

[0046] Here, the packaging box 50 in this embodiment is Figure 3 After the flat plate member shown in the figure is folded to form the side portions M1 to M4, Figure 4 The packaging box shown is formed into a polygonal cylindrical shape.

[0047] In detail, the packaging box 50 is originally made of a rectangular flat member (raw material) made of corrugated cardboard, etc., and the unfolded view of the flat member is as shown in FIG. Figure 3 shown.

[0048] Specifically, five rectangular planes 51A to 51E divided by four parallel folds M1 to M4 are formed on the flat plate member. In addition, a plurality of slits 52A, 52B, 53A, 53B, 54 to 57 are formed on the flat plate member. Then, the four folds M1 to M4 are folded at approximately right angles to form the sides, and the planes 51A and 51E at both ends are overlapped to assemble the four-sided cylindrical packaging box 50.

[0049] Then, refer to Figure 4 (B), in the packaging box 50 and the square tube extending direction ( Figure 4 When the vertical direction of (B) is the longitudinal direction, one end side of the longitudinal direction ( Figure 4 At least two sides M1 and M3 among the multiple sides M1 to M4 and the other end side in the longitudinal direction ( Figure 4 At positions corresponding to at least two sides M2 and M4 different from the sides M1 and M3 on the one end side among the multiple sides M1 to M4 (below the side of (B)), retaining parts 52A, 52B, 53A and 53B are formed which protrude inward and can retain the colorant container 30 (packaged body).

[0050] In other words, the assembly method of the packaging box 50 in the present embodiment includes: (1) forming a fold on a flat member and forming side portions M1 to M4 to form a polygonal cylindrical shape; (2) causing a portion sandwiched by two cuts formed in parallel with each other at intervals in a direction intersecting the fold when the flat member is in a state to protrude inwardly to form retaining portions 52A, 52B, 53A, 53B capable of retaining the colorant container 30 (packaged body).

[0051] Specifically, the packaging box 50 in the present embodiment is formed in a rectangular tube shape.

[0052] Then, one end side in the length direction ( Figure 4 The two holding portions 52A and 52B (first holding portions) are formed at positions corresponding to the two diagonally located sides M1 and M3 of the four sides M1 to M4 (see Figure 4 (B) Figure 5 (B)).

[0053] On the other hand, the other end side in the longitudinal direction ( Figure 4 The two holding portions 53A and 53B (second holding portions) are formed at positions corresponding to the two sides M2 and M4 (the remaining two sides) of the four sides M1 to M4 that are different from and diagonally located with respect to the two sides M1 and M3 on one end side (see Figure 4 (B) Figure 5 (C)).

[0054] That is, when the four-sided cylindrical packaging box 50 is projected in the longitudinal direction, the holding parts 52A, 52B at one end side in the longitudinal direction and the holding parts 53A, 53B at the other end side in the longitudinal direction are arranged at positions that do not overlap. In other words, one holding part 52A, 52B, 53A, 53B is formed at each position corresponding to each of the four sides M1 to M4.

[0055] These holding parts 52A, 52B, 53A, 53B are in the state of a flat plate member ( Figure 3 In the state before assembly shown in the figure, the portion sandwiched by the two slits formed in parallel with each other at an interval in a direction intersecting the folds M1 to M4 protrudes inwardly.

[0056] In detail, Figure 3 In the flat plate member shown, two cuts intersecting the folds are formed at intervals in the direction in which the folds extend, respectively, on the four folds M1 to M4.

[0057] Then, bend the folds M1 to M4 from the flat plate, as shown in FIG. Figure 4 After being formed (assembled) into a quadrilateral cylindrical shape as shown in (A), the portions (52A, 52B, 53A, 53B) with the slits formed therein are pressed inward to form a Figure 4 (B) Figure 5 The four retaining parts 52A, 52B, 53A, and 53B shown in FIG. Figure 5 As shown in (B) and (C) of FIG. 1 , the cross-sections of the four holding portions 52A, 52B, 53A, and 53B are formed in a substantially L-shape.

[0058] Here, in the state of the plate component ( Figure 3 The slits 54 to 57 other than the holding parts 52A, 52B, 53A, 53B among the plurality of slits 52A, 52B, 53A, 53B, 54 to 57 formed in a state of being formed in a flat member are used when assembling the rectangular cylindrical packaging box 50 from the state of the flat member. Specifically, the slits 54 and 55 formed in a tongue shape are inserted into the slit-shaped slits 56 and 57, respectively, and fixed in a state where the flat surfaces 51A and 51E at both ends overlap.

[0059] The method of fixing the flat surfaces 51A and 51E at both ends is not limited to this, and for example, the flat surfaces 51A and 51E at both ends may be fixed by bonding the facing surfaces thereof with an adhesive or the like.

[0060] Then, if Figure 5 As shown, the toner container 30 is firmly fixed and held in the packaging box 50 by the four holding portions 52A, 52B, 53A and 53B thus constructed.

[0061] In detail, the toner container 30 is formed in a substantially cylindrical shape, and a cap member 31 is provided in a manner to cover the head (the portion for discharging toner) of the bottle body (the bottle bottom 32 has a concave shape to serve as a gripping portion), and the bottle body is formed with a protrusion protruding spirally toward the inside of the container. Then, in the packaging box 50, the toner container 30 is held with the cap member 31 side as one end side in the longitudinal direction and the bottle bottom 32 side as the other end side in the longitudinal direction. At this time, the cap member 31 is held by the first holding portions 52A and 52B, and the bottle bottom 32 is held by the second holding portions 53A and 53B.

[0062] In this way, in the toner container 30, the cap member 31 and the bottle bottom 32, which function as a held portion held by the plurality of holding portions 52A, 52B, 53A, 53B, are formed in such a manner that the outer circumference of the substantially cylindrical portion located at the center side in the longitudinal direction is recessed from the position thereof. Specifically, the portion serving as the first held portion in the cap member 31 is formed with an outer diameter smaller than the outer diameter of the portion located at the center side in the longitudinal direction from the position thereof, and is held by the first holding portions 52A, 52B. In contrast, the bottle bottom 32 (gripping portion) serving as the second held portion is formed with an outer diameter smaller than the outer diameter of the bottle at the portion located at the center side in the longitudinal direction from the position thereof, and is formed with a recessed portion, which is held by the second holding portions 53A, 53B.

[0063] Thus, the packaging box 50 in this embodiment is assembled by forming a polygonal tube with folds as the sides M1 to M4 and then pressing inwardly the plurality of slits 52A, 52B, 53A, 53B formed on the flat plate member as holding portions.

[0064] Therefore, no cushioning material or the like is provided inside the packaging box 50 to fill the gap between the packaging box 50 and the toner container 30, so that the toner container 30 can be firmly fixed and held relatively simply without increasing the cost or complexity, and without reducing the ease of taking out the toner container 30 from the packaging box 50. Therefore, when transporting from the manufacturing plant to the transportation destination (importing destination), the toner container 30 is less likely to fly out of the packaging box 50 or to move around in the packaging box 50 due to vibration during transportation. Therefore, it is less likely that the toner in the toner container 30 will clump toward one end in the longitudinal direction.

[0065] In particular, the two first holding portions 52A and 52B are arranged in a diagonal position relationship with each other, and the two second holding portions 53A and 53B are also arranged in a diagonal position relationship with each other, and these holding portions 52A, 52B, 53A, and 53B are located at different sides M1 to M4. Therefore, the toner container 30 can be effectively held in the packaging box 50 with good balance.

[0066] In addition, the plurality of retaining portions 52A, 52B, 53A, and 53B are formed in a substantially L-shaped manner so as to cross the side portions M1 to M4, and the root portion at one end and the root portion at the other end are connected to adjacent planes. As a specific example, the root portion at one end of the retaining portion 52A crossing the first side portion M1 is connected to the first plane 51A, and the root portion at the other end is connected to the second plane 51B. By configuring in this way, compared with the comparative example Figure 7 (A)(or Figure 7 Compared with the retaining parts 152A, 152B (252A, 252B) formed with one end side as a free end as the packaging box 150 (250) shown in (B)), the mechanical strength of the retaining parts 52A, 52B, 53A, 53B can be improved.

[0067] Here, refer to Figure 5 In the packaging box 50 of the present embodiment, the toner container 30 (packaged body) is held so as not to come into contact with any portion other than the holding portions 52A, 52B, 53A, and 53B.

[0068] That is, in the packaging box 50 , the toner container 30 is suspended except for the portion held by the holding portions 52A, 52B, 53A, and 53B, and a large space exists between the packaging box 50 and the toner container 30 .

[0069] With this configuration, even if the packaging box 50 vibrates or an unexpected external force is applied to the packaging box 50 during transportation, the vibration or external force is unlikely to be directly transmitted to the toner container 30. Therefore, the above-mentioned effects of the present invention are more easily exhibited.

[0070] Here, refer to Figure 5 The holding portions 52A, 52B, 53A, and 53B restrict the toner container 30 (packaged body) in the longitudinal direction ( Figure 5 Movement in the left and right direction of (A).

[0071] That is, the toner container 30 is held by the first holding portions 52A, 52B and the second holding portions 53A, 53B so that the toner container 30 does not largely move in the longitudinal direction within the packaging box 50 .

[0072] Thereby, the effects of the present invention described above can be more easily exerted.

[0073] Then, refer to Figure 6 By pulling out the retaining parts (at least two retaining parts) at one end or the other end of the length direction of the retaining parts 52A, 52B, 53A, 53B respectively to the outside of the polygonal tube, the colorant container 30 (the packaged body) can be taken out from the packaging box 50.

[0074] Specifically, in Figure 6 In the example of FIG. 1 , in the packaging box 50 ( Figure 2 , Figure 5 In the state of the first holding parts 52A, 52B and the second holding parts 53A, 53B, the first holding parts 52A, 52B which are bent inward are folded back outward ( Figure 6 ), the toner container 30 can be taken out from one end side in the longitudinal direction (the first holding portion 52A, 52B side) in the direction of the arrow.

[0075] When the toner container 30 is placed in the empty packaging box 50, the reverse operation to the above-mentioned operation when taking out is performed.

[0076] Here, refer to Figure 3 In this embodiment, the slits formed in the flat plate member to form the holding portions 52A, 52B, 53A, and 53B are perpendicular to the folds M1 to M4 ( Figure 3 The horizontal direction) is formed in an inclined manner.

[0077] Specifically, the slits used to form the retaining portions 52A, 52B, 53A, and 53B are all formed in a V-shape (with the top of the V facing the center in the longitudinal direction) so as to cross the folds M1 to M4. Figure 4 In the state of the lower side of (B), the second holding parts 53A and 53B are in the shape of an L-shaped top facing the Figure 4 The state above (B).

[0078] With such a configuration, compared with a case where the retaining portions 52A, 52B, 53A, 53B (cuts) are not inclined but are formed at right angles to the side portions M1 to M4, it is easier to retain the colorant container 30 in the packaging box 50 with a stronger force toward the center side in the longitudinal direction through the retaining portions 52A, 52B, 53A, 53B.

[0079] In addition, refer to Figure 5 The plurality of holding portions 52A, 52B, 53A, and 53B are respectively formed at positions away from the end portion of one end side or the other end side in the longitudinal direction toward the center side in the longitudinal direction. Figure 3 The slits for forming the first retaining portions 52A and 52B are formed at a distance X1 from the end portion on one end side in the length direction, and the slits for forming the second retaining portions 53A and 53B are formed at a distance X2 from the end portion on the other end side in the length direction.

[0080] Then, if Figure 5As shown in FIG. 2(A) , the toner container 30 (packaged body) is held in the packaging box 50 so as not to protrude from both ends in the longitudinal direction.

[0081] With such a configuration, compared with the case where the retaining portions 52A, 52B, 53A, 53B are formed at the extreme positions of the longitudinal ends, the packing properties of the toner container 30 in the packaging box 50 are improved, and it is difficult for foreign matter that enters the interior from the openings at both ends to adhere to the toner container 30. Furthermore, compared with the case where the retaining portions 52A, 52B, 53A, 53B are formed at the extreme positions of the longitudinal ends, the mechanical strength of the retaining portions 52A, 52B, 53A, 53B can be improved.

[0082] <Modification>

[0083] like Figure 8 As shown, the end portions (equivalent to the end portions of one end side and the other end side) of the longitudinal direction of the packaging box 50 in the modified example Figure 3 The distance between X1 and X2 is Figure 8 The portion surrounded by the dotted line in the figure is folded or flattened toward the center side in the length direction.

[0084] With this configuration, the packing performance of the toner container 30 in the packaging box 50 is improved, and the inconvenience of foreign matter entering the packaging box 50 from the outside is less likely to occur.

[0085] As described above, the packaging box 50 of the present embodiment is formed into a polygonal tube-shaped packaging box 50 capable of packaging the toner container 30 (packaged body) therein, and the flat plate member is folded to form the side portions M1 to M4. Then, the packaging box 50 is formed with retaining portions 52A, 52B, 53A, 53B protruding inwardly and capable of retaining the toner container 30 at positions corresponding to at least two side portions M1, M3 of the plurality of side portions M1 to M4 on one end side of the length direction when the extending direction of the square tube is the length direction, and at least two side portions M2, M4 of the plurality of side portions M1 to M4 on the other end side of the length direction that are different from the side portions M1, M3 on the one end side.

[0086] Thus, the toner container 30 packaged inside can be sufficiently fixed without increasing the cost and complexity of the packaging box 50 or reducing the ease of taking out the toner container 30 from the packaging box 50 .

[0087] In addition, in the present embodiment, the present invention is applied to a packaging box 50 that is packaged with a toner container 30 that is detachably disposed in the image forming apparatus 1 as a packaged body. However, the packaged body packaged in the packaging box 50 to which the present invention is applied is not limited to the toner container 30. For example, the present invention can also be applied to a packaging box that packages a developing device that contains a developer as a packaged body, or a packaging box that packages a processing cartridge that integrates such a developing device or an imaging component such as a photosensitive drum as a packaged body. Furthermore, the present invention can be applied to all packaging boxes that package a packaged body, not only other packaged bodies (units) that are detachably disposed in the image forming apparatus, but also a packaged body that is not related to the image forming apparatus.

[0088] In the present embodiment, a rectangular tube-shaped packaging box is used as the polygonal tube-shaped packaging box 50 , but a polygonal tube-shaped packaging box other than the rectangular tube-shaped packaging box may be used as the polygonal tube-shaped packaging box 50 .

[0089] However, even in such a case, the same effects as those of the present embodiment can be obtained.

[0090] Furthermore, the present invention is not limited to this embodiment, and within the scope of the technical concept of the present invention, in addition to the teachings of this embodiment, it is obvious that this embodiment can be appropriately changed. In addition, the number, position, shape, etc. of the constituent members are not limited to this embodiment, and appropriate number, position, shape, etc. can be selected when implementing the present invention.

[0091] In addition, the embodiment of the present invention can also be a combination of, for example, the following additional notes 1 to 11.

[0092] <Additional Note 1>

[0093] A packaging box is formed so that a packaged object can be packaged inside, and a flat plate member is folded to form a polygonal cylindrical side, characterized in that:

[0094] A retaining portion that protrudes inward and can retain the packaged body is formed at positions corresponding to at least two of the multiple sides on one end side of the length direction when the extending direction of the square tube is the length direction, and at least two of the multiple sides on the other end side of the length direction that are different from the one end side.

[0095] <Note 2>

[0096] The packaging box according to Supplementary Note 1 is characterized in that:

[0097] The holding portion projects inwardly a portion sandwiched between two slits formed in parallel with each other at a distance in a direction intersecting the fold when the flat plate member is in the state.

[0098] <Addendum 3>

[0099] The packaging box according to Supplementary Note 2 is characterized in that:

[0100] The slit is formed to be inclined with respect to a direction perpendicular to the fold line.

[0101] <Addendum 4>

[0102] The packaging box according to any one of Notes 1 to 3, characterized in that:

[0103] Inside the packaging box, the packaged object is held so as not to come into contact with any portion other than the holding portion.

[0104] <Addendum 5>

[0105] The packaging box according to any one of Notes 1 to 4, characterized in that:

[0106] The holding portion restricts movement of the packaged body in the longitudinal direction.

[0107] The packaged object can be taken out by pulling out the at least two holding portions at one end or the other end in the longitudinal direction toward the outside of the polygonal tube.

[0108] <Addendum 6>

[0109] The packaging box according to any one of Notes 1 to 5, characterized in that:

[0110] The packaging box is formed into a four-sided cylindrical shape.

[0111] The two holding portions at one end side in the longitudinal direction are formed at positions corresponding to two side portions in a diagonal positional relationship among the four side portions,

[0112] The two holding portions on the other end side in the longitudinal direction are formed at positions corresponding to two side portions among the four side portions that are in a diagonal positional relationship different from the two side portions on the one end side.

[0113] <Addendum 7>

[0114] The packaging box according to any one of Notes 1 to 6, characterized in that:

[0115] The plurality of holding portions are respectively formed at positions away from the end portion on one end side or the other end side in the longitudinal direction toward the center side in the longitudinal direction,

[0116] The packaged body is held so as not to protrude from both ends in the longitudinal direction.

[0117] <Addendum 8>

[0118] The packaging box according to Supplementary Note 7 is characterized in that:

[0119] The end portions at one end side and the other end side in the longitudinal direction are folded or crushed toward the center side in the longitudinal direction.

[0120] <Addendum 9>

[0121] The packaging box according to any one of Notes 1 to 8, characterized in that:

[0122] The packaged body contains a toner container that contains toner.

[0123] <Addendum 10>

[0124] A toner container as a packaged body accommodated in the packaging box according to any one of Supplementary Notes 1 to 9, characterized in that:

[0125] The toner container is formed in a cylindrical shape.

[0126] The held portion held by the plurality of holding portions is formed so as to be recessed from the outer periphery of the cylindrical portion located on the center side in the longitudinal direction.

[0127] <Addendum 11>

[0128] A method for assembling a packaging box capable of packaging a packaged object, characterized by comprising:

[0129] A step of forming a polygonal tube shape by folding a flat plate member to form edges, and

[0130] a step of causing a portion sandwiched between two slits formed in parallel with each other at an interval in a direction intersecting the fold to protrude inwardly when the flat member is in the state of the flat member, thereby forming a holding portion capable of holding the packaged body;

[0131] The retaining component is formed at positions corresponding to at least two of the multiple sides on one end side of the length direction when the extending direction of the square tube is the length direction, and at least two of the multiple sides on the other end side of the length direction that are different from the one end side.

Claims

1. A packaging box having a polygonal cylindrical shape in which a packaged object is formed so as to be packaged inside and the sides are formed by folding a flat plate member, characterized in that: A retaining portion that protrudes inward and can retain the packaged body is formed at positions corresponding to at least two of the multiple sides on one end side of the length direction when the extending direction of the square tube is the length direction, and at least two of the multiple sides on the other end side of the length direction that are different from the one end side.

2. The packaging box according to claim 1, characterized in that: The holding portion projects inwardly a portion sandwiched between two slits formed in parallel with each other at a distance in a direction intersecting the fold when the flat plate member is in the state.

3. The packaging box according to claim 2, characterized in that: The slit is formed to be inclined with respect to a direction perpendicular to the fold line.

4. The packaging box according to claim 1 or 2, characterized in that: The packaged object is held inside the packaging box so as not to come into contact with any portion other than the holding portion.

5. The packaging box according to claim 1 or 2, characterized in that: The holding portion restricts movement of the packaged body in the longitudinal direction. The packaged object can be taken out by pulling out the at least two holding portions at one end or the other end in the longitudinal direction toward the outside of the polygonal tube.

6. The packaging box according to claim 1 or 2, characterized in that: The packaging box is formed into a four-sided cylindrical shape. The two holding portions at one end side in the longitudinal direction are formed at positions corresponding to two side portions in a diagonal positional relationship among the four side portions, The two holding portions on the other end side in the longitudinal direction are formed at positions corresponding to two side portions among the four side portions that are in a diagonal positional relationship different from the two side portions on the one end side.

7. The packaging box according to claim 1 or 2, characterized in that: The plurality of holding portions are respectively formed at positions away from the end portion on one end side or the other end side in the longitudinal direction toward the center side in the longitudinal direction, The packaged body is held so as not to protrude from both ends in the longitudinal direction.

8. The packaging box according to claim 7, characterized in that: The end portions at one end side and the other end side in the longitudinal direction are folded or crushed toward the center side in the longitudinal direction.

9. The packaging box according to claim 1 or 2, characterized in that: The packaged body contains a toner container that contains toner.

10. A toner container as a packaged body accommodated in the packaging box according to claim 1 or 2, characterized in that: The toner container is formed in a cylindrical shape. The held portion held by the plurality of holding portions is formed so as to be recessed from the outer periphery of the cylindrical portion located on the center side in the longitudinal direction.

11. A method for assembling a packaging box capable of packaging a packaged object, characterized in that include: A step of forming a polygonal tube shape by folding a flat plate member to form edges, and a step of causing a portion sandwiched between two slits formed in parallel with each other at an interval in a direction intersecting the fold to protrude inwardly when the flat member is in the state of the flat member, thereby forming a holding portion capable of holding the packaged body; The retaining component is formed at positions corresponding to at least two of the multiple sides on one end side of the length direction when the extending direction of the square tube is the length direction, and at least two of the multiple sides on the other end side of the length direction that are different from the one end side.

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