Patent Grant
10752416
The present invention relates to a packing member and a packing method.
As a packing method of a cartridge for use with an image forming apparatus, various packing methods have been proposed. For example, a method in which a cushioning member is mounted at each of end portions of the cartridge with respect to an axial direction of a developing roller, and the cartridge is accommodated in a box having a hexahedral trapezoidal shape having side surfaces each having an isosceles trapezoidal shape has been known (Japanese Laid-Open Patent Application (JP-A) 2008-260556).
In addition, also a method in which a cartridge is provided between an upper supporting member and a lower supporting member and is accommodated in a box and then is packed has been known (JP-A 2009-69823).
On the other hand, a method in which a member-to-be-packed is subjected to shrink packing with, as a packing material, a heat-shrinkable film having a printed layer has been disclosed (JP-A 2002-87460).
In the cartridge for use with the image forming apparatus, there is a need to display many pieces of information such as a manufacturer and the kind of corresponding device (model). As regards product information of the cartridge, the information achieves commonalty of the many pieces of information such as the manufacturer and the kind of corresponding device but has a difference in only pieces of information such as a color and a toner capacity in some cases. Conventionally, the product information was printed together with printing of package design on a structure such as a box, specifically a corrugated cardboard which forms the box. For this reason, even in the case where the commonality of the many pieces of information is provided, boxes were required to be individually prepared in advance, so that a large space was required as a storage space for packing materials.
Therefore, it would be considered that a constitution in which commonality of structures such as boxes is provided and, depending on a cartridge which is an object-to-be-accommodated, shrink packing is effected using a heat-shrinkable film (sheet) on which the product information is displayed is employed and thus the storage space for packing materials is reduced. However, in the case where the shrink packing was effected using the sheet on which the product information was displayed, a display portion with information such as a character, a code or a graphic (figure) lost its shape and thus it was difficult to read the displayed information in some cases.
According to an aspect of the present invention, there is provided a packing member comprising: a structure for accommodating an object to be accommodated; and a cylindrical sheet for covering said structure, wherein said cylindrical sheet includes a first portion having a heat contraction property and includes a second portion having an elasticity higher than that of said first portion, said first portion having a display portion, wherein said display portion is provided on a surface extending along a predetermined direction of said structure, and wherein free end portions of said first portion and said second portion contract (shrink) to surround an end surface of said structure crossing the predetermined direction of said structure.
According to another aspect of the present invention, there is provided packing method of a packing member including a structure for accommodating an object to be accommodated and a cylindrical sheet for covering said structure, wherein the cylindrical sheet includes a first portion having a heat contraction property and includes a second portion having an elasticity higher than that of the first portion, said packing method comprising: a first step of bonding the first sheet and the second sheet to each other; a second step of forming the cylindrical sheet by wrapping the first sheet and the second sheet so that the display portion is positioned on a surface extending along a first direction of the structure and then by bonding the first sheet and the second sheet in a state in which tension is caused to act on the second sheet; and a third step of contracting free end portions of the first sheet and the second sheet so as to surround an end surface crossing the first direction of the structure.
According to a further aspect of the present invention, there is provided a packing method of a packing member comprising a structure for accommodating an object-to-be-accommodated and a cylindrical sheet covering a surface extending along a first direction of the structure, including a display portion and partly having a heat contraction property, the packing method comprising: a first step of providing the structure in the cylindrical sheet so that the display portion is positioned on a surface extending along the first direction; and a second step of contracting the cylindrical sheet by heating means so as to surround an end surface of the structure while supporting a portion, extending in the first direction from a portion contacting a bottom of the structure positioned at a lower portion with respect to a vertical direction, upwardly by a supporting member with respect to the vertical direction.
Further features of the present invention will become apparent from the following description of exemplary embodiments with reference to the attached drawings.
In
In
In
In
In
<Packing Member>
A packing member 10 for a cartridge P in this embodiment will be described with reference to
In the following, the cartridge P which is the member-to-be-packed is a drum cartridge for supporting an electrophotographic photosensitive drum, a developing cartridge for supporting a developing means, a process cartridge prepared by integrally assembling the electrophotographic photosensitive drum and a process means into a cartridge (unit), or the like cartridge. The process means acts on the electrophotographic photosensitive drum, and examples thereof include not only a charging means, the developing means, a cleaning means and the like which act on the electrophotographic photosensitive drum, but also an application roller for applying a toner onto a toner carrying member, a remaining toner amount detecting means, and the like. Here, the electrophotographic photosensitive drum and the process means correspond to parts (components) for forming an image by an electrophotographic process.
As shown in
To the box 1 in which the cartridge P is accommodated, the sheet member 2 formed as a ring member (cylindrical sheet) so as to cover and tighten both side surfaces with respect to the widthwise direction and upper and lower surfaces is fixed. The sheet member 2 includes a first sheet (first portion) 2a on which information in displayed and which has a heat contraction property and a second sheet (second portion) 2b having an elasticity higher than that of the first sheet 2a. The elasticity specifically refers to elastic modulus in tension, and the elastic modulus in tension can be calculated from a tensile test in which an elongation amount and a displacement data of a test piece is measured using an extensometer.
The first sheet 2a is provided with a display portion 2e for displaying information such as a manufacturer or the kind of corresponding device (model), common to a plurality of cartridges by printing not only a character such as “ABC” as shown in
The sheet member 2 is constituted so that both ends of the first sheet 2a with respect to a circumferential direction are pulled by elasticity of the second sheet 2b by connecting one end of the first sheet 2a with one end of the second sheet 2b and by connecting the other end of the first sheet 2a with the other end of the second sheet 2b. As a result, the cartridge P is tightened by inner peripheral surfaces of the first sheet 2a and the second sheet 2b. In this embodiment, with respect to the circumferential direction of the sheet member 2, the second sheet 2b covered a part of the lower surface of the box 1, and the first sheet 2a covered other portions such as the both side surfaces of the box 1 with respect to the widthwise direction and the upper surface of the box 1. Specifically, the first sheet 2a was disposed so that not only the first display portion 2e thereof was positioned on the end surface with respect to one widthwise direction of the box 1, i.e., on the surface extending along a longitudinal direction but also the second display portion 1a of the box 1 was visible through the transparent portion 2c.
Further, at each of both ends of the sheet member 2 with respect to the longitudinal direction, the sheet member 2 is provided with a first contracted portion 2da. The first contracted portion 2d is formed by contraction of the first sheet 2a. As a result, a peripheral length of a free end portion of the sheet member 2 is shorter than a peripheral length of the sheet member 2 at other portions crossing the longitudinal direction. Thus, the sheet member 2 includes the contracted portion 2d contracted at each of both ends thereof with respect to the longitudinal direction, but at other portions, the sheet member 2 is not substantially contracted.
In this embodiment, a constitution in which the second sheet 2b having an elasticity higher than that of the first sheet 2a was used and both ends of the first sheet 2a with respect to the circumferential direction were pulled by the elasticity of the second sheet 2b was employed. As a result, proper tension is applied to the sheet member 2 which is the ring member, so that the sheet member 2 can be fixed to the box 1. In addition, by using the second sheet 2b having the elasticity, it is possible to suppress elongation and contraction of the first sheet 2a. As a result, it is possible to suppress disablement of reading of the information due to loss of the shape of the character, the graphic, the symbol, the code or the like at the first display portion 2e displayed on the first sheet 2a. Further, as in this embodiment, in the case where the sheet member 2 is provided with the transparent portion 2c, the second sheet 2a including the transparent portion 2c is not contracted, and therefore it is possible to suppress positional deviation of the transparent portion 2c from the second display portion 1a provided on the box 1 and is preferable.
Further, in this embodiment, the sheet member 2 was provided with the contracted portions 2d at the longitudinal ends thereof. As a result, the peripheral length of the free end portions of the contracted portions 2d can be made shorter than the peripheral length of the sheet member 2. That is, at longitudinal end surfaces of the box 1, the contracted portions 2d can be formed as a part of the sheet member 2 so as to surround side surfaces of the box 1 extending along a direction crossing the longitudinal direction, so that it is possible to suppress disconnection of the box 1 from the sheet member 2.
Conventionally, in shrink packing in which a member-to-be-packed (box) was disposed in a sheet which is a ring member and the sheet was contracted in an entire region thereof and was closely contacted to the member (material)-to-be-packed, it was difficult to suppress the loss of the shape of the character, the graphic, the symbol, the code or the like displayed on the sheet and a positional deviation between the sheet and the member-to-be-packed. In this regard, in this embodiment, the constitution in which the sheet member 2 includes the contracted portions 2d contracted at both ends thereof with respect to the longitudinal direction, but at other portions, the sheet member 2 is not substantially contracted is employed. For this reason, it is possible to suppress the loss of the shape of the character, the graphic, the symbol, the code or the like displayed on the first sheet 2a at the first display portion 2e and the positional deviation between the second display portion 1a of the member-to-be-packed (box 1) and the transparent portion 2c of the first sheet 2a. On the other hand, similarly as in the shrink packing, the sheet member 2 is provided with the contracted portions 2d at its longitudinal ends, so that it is possible to suppress disconnection of the box 1 from the sheet member 2. Thus, it is possible to firmly wrap (pack) the member-to-be-packed with the sheet member while improving a design property of the packing member 10.
In addition, in this embodiment, the second display portion 1a for displaying the information such as the color or the toner capacity depending on the cartridge was provided on the box 1, and the first display portion 2e for displaying the information such as the manufacturer or the kind of corresponding device (model) common to the plurality of cartridges was provided on the first sheet 2a. A portion where the design property as a product package is further required can be formed as the first display portion 2e of the first sheet 2a is advance, while the box 1 is covered with the first sheet 2a, and therefore, the outer surface of the box 1 is not required to be subjected to a surface protecting process. For this reason, the second display portion 1a for displaying only the information depending on the cartridge can be formed on the common box 1 by an easy forming method depending on the cartridge before the packing of the cartridge. As a result, even in the case where the packing member depending on the plurality of members-to-be-packed is formed, the common sheet and the common box can be used, so that a storage space for the packing materials can be reduced.
In the above-described embodiments, as the second sheet 2b, the sheet having an elasticity higher than that of the first sheet 2a was used. However, the second sheet 2b may also have not only an elasticity higher than that of the first sheet 2a but also a heat contraction property similarly as in the first sheet 2a. In this case, the second sheet 2b can be a sheet which is formed of the same material as the material of the first sheet 2a by the drawing process or the like in order to weld the second sheet 2b to the first sheet 2a and which has a lower density and a smaller thickness than those of the first sheet 2a in order to cause the first sheet 2a to have an elasticity higher than that of the first sheet 2a. By using the second sheet 2b having the elasticity and the heat contraction property, at both ends of the second sheet 2b with respect to the longitudinal direction, in addition to a first contracted portion 2da of the first sheet 2a, it is possible to form a second contracted portion 2db of the second sheet 2b ((a) of
Further, in the above-described embodiments, the constitution in which the second display portion 1a of the box 1 on which the information such as the color or the toner capacity indicated by the character, the graphic, the symbol, the code or the like was visible through the transparent portion 2c of the first sheet 2a was employed. However, a part of the structure such as the member-to-be-packed or the box, e.g., an uneven portion (projection and recess) of the structure may also be made visible through the transparent portion 2c of the first sheet 2a, and thus the second display portion 1a is not limited to a display portion where the information such as the color or the toner capacity indicated by the character, the graphic, the symbol, the code or the like is printed.
In addition, in the above-described embodiment, the constitution in which the single box 1 was wrapped (packed) with the sheet member 2 was employed, but the present invention is not limited thereto. For example, as shown in (b) of
<Packing Method (Manufacturing Method) of Packing Member>
A packing method of the member-to-be-packed in Embodiment 1 will be described.
First of all, a packing step S1 of the cartridge P which is the member-to-be-packed is performed. A structure which is a packing container for accommodating the cartridge P and a cushioning member (material) for protecting the cartridge P from impact (shock) are prepared. As the structure, the box 1 is used, and the product information or the like is printed at the second display portion 1a on a side surface which is an end surface with respect to one widthwise direction (x direction). The cartridge P is fixed inside the box 1 through the cushioning member so as to prevent positional deviation of the cartridge P, so that the box 1 in which the cartridge P is accommodated is formed (
The box 1 in which the cartridge P is accommodated is subjected to a wrapping (packing) step S2 of wrapping the box 1 with a cylindrical sheet at a periphery of the box 1 by a sheet wrapping and fastening device 20. The sheet wrapping and fastening device 20 includes a fusion-cutting mechanism 14 for cutting and welding a first sheet material T1 which forms the first sheet 2a and a second sheet material T2 which forms the second sheet 2b at the same time, and a tension applying mechanism 15 for applying tension to the second sheet material T2.
As shown in (a) of
Then, the box 1 is passed through an inside of the sheet wrapping and fastening device 20. At this time, in addition to a heater portion 16 of the fusion-cutting mechanism 14 and a sheet urging portion 17 provided on the heater portion 16 so as to cover not only a back side of the heater portion 16 but also an upstream side and a downstream side of the heater portion 16, a follower roller 15b of the tension applying mechanism 15 is moved upwardly as shown in (b) of
Then, as shown in (a) of
At this time, a constitution in which the first sheet material T1 is pulled out in a predetermined amount when the box 1 is slid to a predetermined position by the above-described inserting mechanism 19, for example, in which the first sheet material T1 is pulled out in a predetermined length is employed. Or, a cutting position is detected by a design such as a mark or the like of the first sheet material T1, and thus the first sheet material T1 is made cuttable at a specific portion. In this manner, in the case where the sheet material T1 is provided with the transparent portion 2c, a positional deviation of the transparent portion 2c from the second display portion 1a of the box 1 is suppressed, so that the transparent portion 2c is superposed on the second display portion 1a. Further, in this embodiment, the length of the first sheet material T1 was adjusted, so that the welding portion L1 was positioned at the bottom of the box 1. Incidentally, in the case where a design detecting portion (not shown) for detecting the mark or the like of the first sheet material T1 is provided, it is preferable that the design detecting portion is provided downstream of the fusion-cutting mechanism 14 for the purpose of enhancing positional accuracy.
After the specific portion of the first sheet material T1 is disposed so as to be cuttable by the fusion-cutting mechanism 14, in this embodiment, the box 1 is fixed by a fixing mechanism 21. Specifically, the box 1 is sandwiched between a fixing portion 21a of the fixing mechanism 21 and the sheet supporting portion 18 and between the fixing portion 21a of the fixing mechanism 21 and the belt conveyer 13b.
After the box 1 is fixed by the fixing mechanism 21, the tension applying mechanism 15 is driven, so that predetermined tension is applied to the second sheet material T2. Specifically, the box 1 is fixed by the fixing mechanism 21, and as the second sheet material T2, a sheet material having elasticity is used. More specifically, the second sheet material T2 is higher in degree of the elasticity than the first sheet material T1. For this reason, the first sheet material T1 is not moved by friction with the box 1, particularly with a corner of the box 1, and the second sheet material T2 is in an elongated state.
Thus, in a state in which the box 1 is fixed in a state in which the specific portion of the first sheet material T1 is cuttable between the sheet urging portion 17 and the sheet supporting portion 18 and in which the second sheet material T2 is elongated, a cutting mechanism 22 is driven, so that the first sheet material T1 and the second sheet material T2 are cut by a cutter 22a of the cutting mechanism 22. Specifically, the cutter 22a is engaged with a groove provided on the heater portion 16. As a result, the cutter 22a cuts the first sheet material T1 and the second sheet material T2 and at the same time, end surfaces of the first sheet material T1 and the second sheet material T2 which are cut are welded and bonded to each other, so that a second welding portion L2 is formed. As a result, it is possible to provide a constitution in which the box 1 is covered with a ring member constituted by the first sheet material T1 and the second sheet material T2. After the first sheet material T1 and the second sheet material T2 are welded at their end surfaces, a cut portion cooling device 23 cools and solidify the second welding portion L2 between the first sheet material T1 and the second sheet material T2.
Then, as shown in (b) of
Although the first sheet 2a and the second sheet 2b which are wrapped and fastened to the box 1 are closely contacted to box 1 by the contracting force of the second sheet 2b, the box 1 is in a state in which the box 1 is capable of disconnecting and dropping from the ring member formed with the first sheet 2a and the second sheet 2b. Therefore, in order to prevent the disconnection and the drop of the box 1, using a shrinking device 30, a shrinking step S3 for thermally shrinking the sheet member 2 (first sheet 2a) is performed. In
The shrinking device 30 includes a tray 31 on which the box 1 which is the member-to-be-packed is mounted, a positioning mechanism 32, contraction preventing mechanisms 33, a supporting member 34 and a heating means 35. As shown in (a) of
Then, free end portions of the sheet member 2 projected from the end portion of the box 1 are supported by the supporting member 34 ((d) of
Then, as shown in (e) of
In this embodiment, the tension applying mechanism 15 is driven and the predetermined tension is applied to the sheet member 2, so that the second sheet material T2 is placed in the elongated state and then the first sheet material 1 and the second sheet material T2 are cut and welded by the cutter 22a of the cutting mechanism 22 and thus the second welding portion L2 is formed. As a result, a contracting force can be generated in the second sheet material T2 having the elasticity, so that the ring member constituted by the first sheet material T1 and the second sheet material T2 can be fastened and closely contacted to the box 1. As a result, it is possible to suppress the elongation and the contraction of the first sheet 2a, so that the sheet member 2 can be wrapped and fastened to the box 1 while suppressing disablement of reading of the information due to the loss of the shape of the character, the graphic, the symbol, the code or the like displayed on the first sheet 2a at the first display portion 2e.
Further, in this embodiment, the constitution in which the first sheet material T1 is pulled in the predetermined amount when the box 1 is slid to the predetermined position by the inserting mechanism 19 or the constitution in which the cutting position is detected by the design of the first sheet material T1 such as the mark and then the first sheet material T1 can be cut at the specific portion is employed. As a result, the positioning between the box 1 and the sheet member 2 can be made, and particularly in the case where the first sheet material T1 is provided with the transparent portion 2c, it is possible to suppress the positional deviation of the transparent portion 2c from the second display portion 1a of the box 1. Further, by adjusting the length of the first sheet material T1, the welded portion L1 can be positioned at the bottom of the box 1, so that the design property can be enhanced.
In addition, in this embodiment, the shrinking step 3 in which the contraction preventing mechanism 33 is disposed in contact with the box 1 or with the interval of about 1-10 mm from the box 1 before the shrinking process and then the sheet member 2 is contracted is performed. By the contraction preventing mechanism 33, it is possible to suppress the blowing of the heated air onto the sheet member 2 at a portion other than the longitudinal end portions of the sheet member 2 or to suppress the contraction of the sheet member at the portion other than the longitudinal end portions by reducing an amount of the heated air blown onto the portion other than the longitudinal portions. As a result, at longitudinal end surfaces of the box 1, the contracted portions 2d can be formed as a part of the sheet member 2 so as to surround side surfaces of the box 1 extending along a direction crossing the longitudinal direction, so that it is possible to suppress disconnection of the box 1 from the sheet member 2.
Incidentally, the contraction preventing mechanism 33 is disposed with the interval of about 1-10 mm from the box 1, so that it is possible to prevent damage of the sheet member 2 by the contraction preventing mechanism 33.
Further, in this embodiment, in the state in which the sheet member 2 was supported by the supporting member 34, the heated air was blown from the heating means 35 onto the sheet member 2, so that the side surface of the box 1 was covered with the sheet member 2. At this time, at first, of the opening 2d increased in length with respect to the vertical direction, the heated air is blown into the space surrounded by the sheet member 2, specifically is directly blown onto the box 1, so that the sheet member 2 can be finely contracted. Particularly, the sheet member 2 was contracted in the state in which the sheet member 2 extending from the portion contacting the bottom of the box 1 was supported by the supporting member 34. As a result, the portion contacting the side surface of the box 1 and raising upwardly can be formed at the contracted portion 2d, so that the disconnection of the box 1 from the sheet member 2 can be suppressed further satisfactorily.
In addition, in this embodiment, a portion where the design property as a product package is further required can be formed as the first display portion 2e of the first sheet 2a is advance, while the box 1 is covered with the first sheet 2a, and therefore, the outer surface of the box 1 is not required to be subjected to a surface protecting process. For this reason, the second display portion la for displaying only the information depending on the cartridge can be formed on the common box 1 by an easy forming method depending on the cartridge before the packing of the cartridge. As a result, even in the case where the packing member depending on the plurality of members-to-be-packed is formed, the common sheet and the common box can be used, so that a storage space for the packing materials can be reduced.
In the above-described embodiment, in the sheet wrapping step S2, the box 1 was sandwiched between the fixing portion 21a of the fixing mechanism 21 and the sheet supporting portion 18 and between the fixing portion 21a of the fixing mechanism 21 and the belt conveyer 13b and then was fixed to the sheet wrapping and fastening device 20. However, the present invention is not limited thereto, but it is possible to use a device which does not include the fixing mechanism 21 when the predetermined tension can be applied to the second sheet material T2 by the tension applying mechanism 15 of the sheet wrapping and fastening device 20.
Further, in the above-described embodiment, the tension applying mechanism 15 has the constitution in which the tension applying roller 15a and the retractable follower roller 15b were provided. However, the present invention is not limited thereto, but may also employ not only, e.g., a constitution in which a retractable tension applying roller 15a and a fixed follower roller 15b are provided but also another constitution when the constitution is capable of applying the tension to the second sheet material T2.
Further, in the above-described embodiment, the constitution in which the single box 1 was wrapped with the sheet member 2, but the present invention is not limited thereto. For example, in the case where a plurality of boxes 1 are integrally wrapped with the sheet member 2, in the sheet wrapping step S2, the plurality of boxes 1 may only be required to be disposed in the sheet wrapping and fastening device 20 and then be integrally wrapped with the sheet member 2. Other steps can be performed similarly as in the above-described embodiment.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
According to the present invention, it is possible to provide a packing member and a packing method which are capable of suppressing loss of a shape of information displayed on a sheet at a display portion to facilitate reading of the displayed information.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2015-140584 | Jul 2015 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2016/071465 | 7/14/2016 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2017/010577 | 1/19/2017 | WO | A |
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| Number | Date | Country | |
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| 20180354694 A1 | Dec 2018 | US |
