JPH0356280A - Packaging of process cartridge - Google Patents

Abstract

PURPOSE:To provide a sufficient light shielding performance and contrive the improvement of shock resistance and humidity proofness with a simple packaging by a method wherein a packaging container supports at least four faces of the six faces of a process cartridge (PC) partly or almost wholly with its inner surface and a foaming plastic sheet and an aluminum-metallized PET film are laminated into a packaging sheet. CONSTITUTION:A packaging container 2 has a shape similar to the exterior structure of PC1 and, of six outer faces of the PC, at least the four outer faces are so shaped as to make close contact with the inner surface of the container 2. The container 2 is packaged with a laminated sheet 4 composed of a foaming plastic sheet 5 and a PET film 7 metallized with aluminum 6. This provides a package sufficient in cushioning force and excellent in moisture proofness and light shielding performance and permits the package to be wrapped inexpensively due to the ability to reduce the places requiring to be fastened with seal tapes upon packaging.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a packaging method, and more specifically to packaging process cartridges (PCs) for copying machines etc. in a state with excellent light-shielding properties, impact resistance, and moisture-proofing properties. Regarding how to.

(Prior Art and its Problems) Conventionally, electrophotographic photoreceptors and PCs have been packaged as follows.

(1) In the case of a single electrophotographic photoreceptor, a laminated sheet of polyethylene terephthalate (PET) film, aluminum (8β) vapor deposited, polyethylene (PE), and airbag sheet is placed on the photoreceptor with the airbag sheet inside. These sheets were wrapped or sealed in a bag, which was then loaded into a cylindrical or rectangular packaging container.

In the case of this method, since the electrophotographic photoreceptor is a simple cylindrical body, sufficient light-shielding properties, impact resistance, and moisture-proofing properties can be obtained by using the above-mentioned laminated sheet.
If it has a complicated shape like C, there are concerns about impact resistance.

(2) In the case of a thick-walled electrophotographic photoreceptor, the photoreceptor is wrapped with a light-shielding sheet, then wrapped with air bag sheets 1 to 1, and then wrapped in an Aff vapor deposition bag for 4 inches, and then wrapped in plastic. It was stored in a container.

In the case of this method, since the outermost shell is made of hard plastic, it is somewhat brittle against drop impact, and although it is an expensive packaging container, it does not have a luxurious feel, and it is difficult to sell it as an individual box. Is it difficult?

(3) In the case of a PC related to the present invention, first wrap the light shielding sheet 1 around the PC and seal it in a /M2 vapor deposition bag,
This was placed in a Styrofoam case and then placed in individual boxes.

In the case of this method, sufficient light-shielding properties, impact resistance, and moisture-proofing properties can be obtained for packaging PCs, but when the packaging is unpacked, a large amount of packaging material becomes waste, so it is criticized for excessive packaging.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide sufficient light-shielding properties, impact resistance, moisture resistance, etc., with simple packaging that does not require excessive packaging, even for PCs with complicated shapes. It is an object of the present invention to provide a method for packaging the obtained PC.

(Means for solving problems) The above objects are achieved by the present invention as described below.

That is, the present invention provides a packaging method in which a PC with an electrophotographic photoreceptor, a toner container, etc. that have been removed for a while is stored in a packaging container, and the entire package is wrapped with a packaging seal. (a) (b) The packaging container described in Item 1 has a shape in which a part or most of the surface in at least four of the six directions of the item 12 is supported on the inner surface, and (b) the packaging container described in Item 2 is foamed. A plastic sheet and A. This is a PC packaging method characterized by laminating a laminated sheet with a fl vapor-deposited PET film.

(Function) By using an envelope container that can support at least four of the six surfaces of the PC on its inner surface and that can resist external forces, the PC can be stably supported within the container.

In addition to this, the first side of the packaging sheet is released. By using 19 plastic, the ml impact resistance is improved and the internal f-law is A.19. The ff vapor-deposited PET film layer has excellent moisture resistance, and the side in contact with the packaging container is also coated with PET film.
Since it is an ET film, it has excellent strength against abrasion.

Therefore, according to the present invention, even if the PC has a complicated shape,
To provide a packaging method that provides sufficient light-shielding properties, impact resistance, weather protection, etc., with simple packaging that does not result in excessive packaging.

(Preferred Embodiments) Next, the present invention will be explained in more detail with reference to preferred embodiments.

FIGS. 1 to 4 are diagrams explaining the packing method of the present invention. In the method of the present invention, first, as shown in FIG.
A packaging container 2 having a shape in which a part or most of the surfaces in at least four of the six directions of the above-mentioned PC are supported on the inner surface.
Store it in.

This packaging container 2 has a shape similar to the outer surface structure of PCI, and has at least 4 of the 6 outer surfaces of PCI.
l. such that the outer surface is in close contact with the inner surface of the container 2. f. It is necessary to have a shape.

Such a container shape can be formed by forming the container 2 similar to the external structure of the PCI. container 2
The first part of the month may be cardboard paper or synthetic navy blue, but PE,
Polypropylene (PP). Vinyl chloride ↑a + fat (PVC
It is preferable to use general-purpose plastic II and create it by tsukiyama molding or extrusion molding, and by such molding, 1) outside of C1 i? ii It is possible to change the shape of the container 2 according to the shape of I'f;. Volume RR2 molded like this
The thickness of the wall varies depending on the size of the material used, so it cannot be determined unconditionally, but for example, in the case of hard PVC,
Sufficient strength can be obtained with a thickness of about 0.04 to 5 mm.

In addition, when storing the PC 1 in the container 2, although not shown, by forming cushioning material or appropriate ribs on the inner surface of the container 2, the adhesion between the PC and the container 2 can be improved. That's ridiculous.

In addition, the sleeve-shaped container 2 can be made by extrusion molding of plastic.
In this case, the side surface (as shown in the figure) is formed from PE sheet by, for example, vacuum forming,
H in the packaging 2: 2! By cooling 1 part of li+, six sides of the PCI can be held fixed, which is preferable. Of course, it is also preferable to form cushioning material, ribs, etc. on these side surfaces 3 as well.

In the present invention, the container 2 containing <Pct as described above is made of a foamed plastic sheet 5 and a PET film 7 subjected to A.degree. C. vapor deposition 6, as shown in FIG. Pack it with a laminated sheet 4.

Foamed plastic sheet 5 used for this laminated sheet 4
For example, foamed PE sheets, foamed PP sheets, foamed polyurethane sheets, etc. can be used, and soft foamed PE sheet 1 is preferable from the viewpoints of ease of use, strength, cushioning properties, cost, etc. The thickness of these foam sheets 5 is preferably about 2 to 5 mm, although it depends on the expansion ratio. If it is too thin, the cushioning properties will be insufficient, while if it is too thick, the volume will become unnecessarily large, and it is also unfavorable in terms of cost.

On the other hand, the thickness of the AI2 vapor deposited layer 6 of the A42 vapor deposited PET film is sufficient for, for example, about 300 to 800 people, and the PET film 7 has a thickness of about 15 A thickness of 100 um to 100 um is appropriate. Note that a PET film is cited as an example of a film on which the Aj2 vapor deposition layer can be formed, but the present invention is not limited to this.

The lamination of the foamed plastic sheets 1 and 5 and the AI2 vapor-deposited PET film 7 is carried out by A. The i2 vapor deposition surface and the foamed plastic sheet surface may be laminated with an adhesive layer 8 such as a PE film interposed therebetween.

The container 2 may be wrapped in any method using the packaging sheet 4. For example, as shown in the second figure, the container 2 is placed between two packaging sheets 4, 4°, A method of heat-sealing the periphery of two packaging sheets 4.4 degrees may be used, or
A preferred method is to prepare a bag in which the container 2 can be stored from the packaging sheets 1 and 4, place the container 2 therein, and heat-seal the opening in the same manner. At this time, heat fusion may be performed between the PET surfaces, between the foamed plastic surfaces, or between the PET surface and the foamed plastic surface.

Further, in order to facilitate heat sealing, it is preferable to form a heat seal 9 such as a PE layer on the outside of the PET film or the foamed plastic sheet. Furthermore, during heat fusion, it is preferable to melt the foamed plastic sheet to eliminate its bubbles, since this further improves the moisture-proofing properties and light-shielding properties of the package.

(Example) Next, the present invention will be further explained with reference to Examples.

Example 1 A PC 1 is housed in an irregular sleeve packaging container 2 made of PvC as shown in the first diagram, and both sides of the container are closed with M (side materials) 3 vacuum-formed from PE. Next, AI!PET film (product name: Mylar film, thickness 17gm) 7 ．． vapor-deposited (thickness: 500) and low-density foamed PE (
(thickness: 5 mm) 5 are pasted together via a PE film 8,
Furthermore, using a packaging sheet 4 having the layered structure shown in the third figure, in which a PE heat-sealing layer 9 was formed on the PET surface, the product was wrapped in a bag shape as shown in the second figure, and the upper and lower parts were heat-sealed and hermetically sealed.

Packaging in this manner produces the following effects.

First, the irregular sleeve type packaging container 2 supports the PCI on four to six surfaces of the PCI so that the PCt does not move inside. Further, both sides of the packaging container 2 are closed with lids 3 to prevent Pct from slipping out of the packaging container 2.

Also, during transportation, the PCI and packaging container 2 may rub against each other, so in order to prevent them from rubbing against each other, or to prevent scratches even if they do, the contact area should be covered with felt or foam. It is also preferable to apply PE or the like.

The packaging container 2 is not limited to a PVC packaging container 2,
Made of PP, P as long as at least 4 sides of the
By further packaging the packaging container 2 containing the Pct, which may be made of E or corrugated paper, as shown in the second figure, the following effects are achieved.

Since the electrophotographic photoreceptor and toner in PCI absorb moisture, their properties may be impaired, so it is necessary to protect them from moisture until just before use. Furthermore, electrophotographic photoreceptors in PCl are often designed to prevent external light from entering.
Still, it is necessary to take precautions against wet light.

With respect to wet light, if carbon is mixed into the foamed PE layer 5 of the packaging sheet 1-4, a certain degree of light-shielding property can be obtained. Furthermore, =
M2 vapor deposition 6 is very effective for moisture proofing properties and is also effective for light blocking properties.

By packaging in this way, if the package falls during transportation, the outermost shell is made of low-density foamed PE5, which acts as a cushion. Furthermore, the PC1 main body is PV
Plastic packaging containers 2 and cardboard packaging containers 2 such as C
protected by.

On the other hand, like Moeki prior art (2) or (3),
If there is an Aff deposition bag on the outside of the package, it will not be able to receive the impact when dropped, and A. It is possible that the ff bag may be torn. However, in the case of the present invention, the L-1
First of all, since there is low-density foamed PE5 on the outside +1111, it has sufficient cushioning properties and is less likely to tear.

] l In the case of this embodiment, as the packaging container 2 for PCI, PV
Although C was used, good results can also be obtained in the following examples.

Example 2 A paper package "!48 container 2" made of corrugated paper, etc. was made, with folds or incisions made at both ends to hold the PCI, and this was further made into a tukudaku package as in Example 1. did.

Example 3 A paper box containing the synthetic material was prepared, PCI was placed in it, and the box was further packaged as in Example].

Table 1 below shows the S. /1 fruit was harvested.

(The following is a blank space) 1 2 E) Since the outermost layer is made of low-density foamed PE, slight collapse of the packaging container 2 is not a problem (Examples 1 to 3) (Effects of the invention) As explained above, By placing the PC in a packaging container such as plastic I+J or paper, and then packaging it with a packaging sheet laminated with foamed plastic sheet 1 and aluminum vapor-deposited PET film, and heat-sealing it, sufficient gentle I+J force can be obtained. , 19 sho 17 can be packaged with excellent properties and excellent light-emitting properties. Furthermore, since the number of places to be secured with seal tape can be reduced during packaging, packaging can be completed at low cost.

[Brief explanation of drawings]

1 to 4 are diagrams explaining the method of the present invention, and the fourth
The figure is a (υi side view) of Figure 1. 1.: PC 2: Packaging container 23/side material /I: packaging sheet]/5: Foamed plastic sheet

Claims (1)

[Claims] (1) In a packaging method in which a process cartridge in which an electrophotographic photoreceptor, a toner container, etc. are integrated is housed in a packaging container, and the entire process cartridge is wrapped with a packaging sheet, (a) the packaging container does not contain the cartridge; (b) the packaging sheet is a foamed plastic sheet;
A method for packaging a process cartridge, characterized by comprising a laminated sheet with an aluminum vapor-deposited polyethylene terephthalate film.