JPH11130146A - Package of assembling member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow assembling members to be released from a tight contact state during transportation and storage and, at the time of taking out of a package, to recover the tight contact state without special trouble or caution by detachably inserting a spacer into a separable part between the assembling members from outside a soft packaging material. SOLUTION: Assembling members 1, 2 are coupled with a pin at one of ends, and they can be connected in tight contact and separated at a part of a movable part 4 with a tension spring 5 hooked on the other end. The assembling members 1, 2 are sealed in a packaging bag comprising a soft packaging material 6 as a whole, and a spacer 7 comprising a cushion is inserted into a separable part of both assembling members 1, 2 from outside the soft packaging material 6. Thus a movable part 4 which is likely to break such as a rubber roll can be effectively prevented from deforming during storage and being damaged by impact during transportation. When a package is unsealed to take out the assembling members 1, 2, the spacer 7 is naturally removed simultaneously with the soft packaging material 6, bringing the movable part 4 into tight contact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package for an assembly member, and more particularly, to a device for assembling a device in which a part capable of being closely and detachably provided is provided between the assembly members. In a package packaged in a packaging material, the assembling members are released from the close state during transportation and storage of the package, and require special labor and attention when the package is taken out of the package. The present invention relates to a package of an assembly member that can be restored without using the same.

[0002]

2. Description of the Related Art Among various devices, many of assembled parts including consumable parts and members having a long life are unitized, and after a certain amount of running, a system in which a new unit is replaced with a new one is becoming established. .

[0003] The assembly parts thus unitized are:
To protect against moisture, light and dust, they are filled and packaged in a soft wrapping material, delivered to the user, opened, and incorporated into the device.

[0004] In many cases, assembled parts include parts that are driven in pressure contact with each other. When such parts are packed and stored in a pressed state, rubber parts and the like are stored during storage. It may be deformed, and the desired performance may not be sufficiently exhibited.

For example, small copiers, printers, fax machines
In an electrophotographic image forming apparatus such as that described above, a replacement unit in which a photoreceptor unit having a photoreceptor drum and a developing unit having an elastic (rubber) developing roller are assembled so as to be close to and separated from each other is formed. Is supplied to the user.

In the image forming apparatus using this exchange unit, the developing roller is brought into close contact with the photosensitive drum to develop the electrostatic latent image. However, if the developing roller and the photosensitive drum are kept in close contact with each other from the time of storage, the developing roller made of an elastic material is deformed, and when the unit is replaced with a new one, a difference in shading occurs on the image. Thus, in this replacement unit, the packaging is performed with the spacer sandwiched between the developing roller and the photosensitive drum, and the spacer is removed when the unit is attached to the apparatus.

Heretofore, there has been already known an exchanging unit of an image forming apparatus in which a peeling material is removed simultaneously with removal from a package.

For example, Japanese Utility Model Laid-Open Publication No. Hei 6-37850 discloses a developing chamber having a photosensitive drum, a developer chamber for storing a developer, and a developer supply for communicating the developing chamber with the developer chamber. In a structure for packing a cartridge body having a mouth, a pulling end of a peel material for sealing the developer supply port in a packed state projects from one end face of the cartridge body, and both end faces of the cartridge body. Characterized in that a shock-absorbing packing material is fitted to each of the above, and the pulling end of the peel material is fixed to a peel-material fixing portion provided on one of the shock-absorbing packing materials. The structure is described.

[0009]

However, in order for the user to perform this spacer, not only extra operation is required, but also an operation error is induced or the spacer is not removed because the spacer is not removed. A trouble that the device does not drive easily occurs. Also, in order to ensure that this is done, it is necessary to add a description.

Of course, it is conceivable to provide a mechanism for automatically removing the spacer at the same time when the unit is mounted. However, in this case, care must be taken not to damage the photosensitive drum and the developing roller. The mechanism for this is also complicated and large, which is not practical.

[0011] Accordingly, an object of the present invention is to provide a package comprising an assembling member in which a part which can be closely and detachably provided between the assembling members is packaged in a soft packaging material. It is an object of the present invention to provide a package of an assembly member in which the assembly member is released from the close state during the transportation and storage of the assembly member, and can be restored to the close state when the package member is taken out of the package without special labor and attention. Another object of the present invention is to
With respect to the assembly including the photosensitive drum unit and the developing unit, which are swingably and pressably connected via pins, the assembly member is released from the close contact state during the transportation and storage of the package, and the package is removed from the package. It is an object of the present invention to provide a package of an image forming apparatus unit which can be restored to a close state without extraordinary labor and attention when taken out.

[0012]

According to the present invention, there is provided a packaging device comprising an assembly member of an apparatus having a part which can be closely and detachably provided between the assembly members in a soft packaging material. In the body, there is provided a package for an assembly member, wherein a spacer is removably inserted into a part of the soft packaging material that can be separated from the assembly member from outside. In the present invention: 1. the spacer comprises a wide base and a narrow insert; 2. the spacer is formed of a cushioning material; 3. the close and detachable portion is provided with a pressure applying means; 4. the pressure applying means comprises a pin which swingably connects the assembly members and also serves as a fulcrum, and a tension spring provided between the assembly members at a position separated from the pins; Preferably, the cushioning material is inserted from the side of the tension spring. The present invention can be particularly suitably applied to a case where the assembling member includes a photosensitive drum unit that is swingably and pressure-contactably connected via a pin, and a developing unit. In this case, the developing unit Is preferably provided with a developing roller made of an elastic material.

[0013]

DETAILED DESCRIPTION OF THE INVENTION

[Action] FIG. 1 conceptually shows the cross-sectional structure of the package of the present invention.
In the first and second assembly members 1 and 2,
One end is connected via a pin (fulcrum) 3. At least one of the assembly members 1 and 2 has a roller-shaped or drum-shaped movable part 4. A tension spring 5 is applied between the assembly members 1 and 2 at a position away from the pin 3, and the two members 1 and 2 are in a state of being able to come into close contact with and separate from the movable part 4. .

The assembly members 1 and 2 are entirely made of a soft packaging material 6.
And sealed. on the other hand,
A spacer 7 made of a cushioning material is inserted from the outside of the soft wrapping material 6 into a releasable portion of the two assembly members 1 and 2. The soft wrapping material 6 is bent along the inserted spacer 7 and is inserted into the releasable portion together, and the soft wrapping material 6 is also completely continuous in this portion, so that piercing or breakage does not occur at all. It is to be understood that the sealability is maintained.

The spacer 7 preferably comprises a wide base 7a and a narrow insert 7b.
Although b is inserted between the assembly members, it should also be understood that the base 7a is located outside the assembly member.

In the package sealed state shown in FIG.
The assembling member 1 and the assembling member 2 are separated from each other via the spacer 7 and the soft wrapping material 6 at the portion of the movable member 5, and even if the movable component 4 is a member such as a rubber roll, which is likely to be deformed or damaged. In addition, deformation during storage and impact damage during transportation are effectively prevented. In particular, when the spacer 7 is formed of a cushioning material, the spacer 7 absorbs vibrations and shocks, which also helps protect the most important parts of the assembled parts.

The package of the present invention has the advantage that the spacer 7 is naturally removed at the same time that the package is opened and the contents 1 and 2 are taken out. That is, the spacer 7 inserted into the separated portion of the assembly members 1 and 2 is outside the soft packaging material 6 including the insertion portion 7b, and therefore, when the soft packaging material 6 is removed from the assembly member, FIG. This is because the spacer 7 is inevitably removed from the assembly member as shown in FIG. Of course, since the two assembly members 1 and 2 are provided so as to be separated from each other, if the assembly members are slightly opened, the spacer 7
Removal is very easy.

Thus, according to the present invention, during transportation and storage of the package, the assembly member is released from the close state, and when the package is taken out of the package, the close state is maintained without any special labor and attention. There is an advantage that it can be restored, and the structure as a package is very simple, requiring only a spacer member, and has the advantages that the packaging cost is low and the operation is simple.

As described above, the present invention is particularly useful for packaging a replacement unit of an image forming apparatus, particularly, an assembly of a photosensitive drum and a developing unit. That is, in these units, the effect on the image quality due to the deformation or damage due to vibration or impact of the members is remarkably large, but in the package of the present invention,
Damage due to deformation or vibration or impact of the member can be avoided, and excellent image formation can be assured to the user.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the following examples.

[Example of Assembly Member] In FIG. 2 showing an example in which the assembly member is an exchange unit for a printer, that is, a process unit including a photosensitive drum unit and a developing unit, the printer 12 includes a body housing 20. It includes a box-shaped main body 21 that is open at least in the front upper part, and a cover 23 that is rotatably mounted on the upper part of the main body 21 by a shaft 22. Inside the machine housing 20, a process unit 14 indicated as a whole is disposed.

The process unit 14 includes a photosensitive unit 40 and a developing unit 50. The developing unit 50 is swingably provided on the photosensitive unit 40 via the support shaft 15.

The photoreceptor unit 40 rotatably supports a photoreceptor drum 42, and a charging mechanism 43 is provided around the photoreceptor drum 42.
And a foreign matter collecting brush 44.

The developing device unit 50 has a developing housing 51, and includes a developing roller 53 housed in the housing, and a sub-roller 54 which comes into contact with the developing roller 53 and supplies toner thereto. Below the developing roller 53, there is provided a blade 56 which regulates the thickness of the toner layer on the developing roller and also serves to charge the toner so as to be in contact therewith. Below the sub-roller 54, at a small interval, is the bottom 57 of the developing housing. In addition, a stirring paddle 55 for stirring the one-component toner is provided inside the developing housing 51 in the vicinity of the sub-roller 54. Since the sub roller 54 and the developing roller 53 and the developing roller 53 and the photosensitive drum 31 are in contact with each other by a trail (a forward direction at a contact portion) and the transfer paper is supplied in a one-pass face-down state, FIG. The photosensitive drum 31 rotates clockwise, the developing roller 53 rotates counterclockwise, and the sub roller 54 rotates clockwise.

Photoconductor unit 40 and developing unit 5
A tension spring 52 is provided between the developing roller 53 and the developing roller 53 so as to press the developing roller 53 against the photosensitive drum 42. In this press-contact state, a passage 41 for image exposure is formed diagonally below the photosensitive drum 42.

A laser unit 24 is housed in the housing body 21 of the body housing. Laser light output from this unit 24 is guided to the photosensitive drum 42 through the exposure passage 41. .

Further, a paper feed tray 28 and a paper discharge tray 27 are provided in the body housing 20, and between them,
The pre-transfer guide plate 45, the transfer roller 31, which is opposed to and close to the photosensitive drum, the post-transfer guide plate 46, the fixing roller 25, and the discharge roller 26 are provided in this order. At the end of the paper feed tray 28, a paper feed roller 2 driven during printing is provided.
9 and a friction pad 30 are provided so that paper can be fed one by one.

The upper portion 452 of the pre-transfer guide plate 45, the transfer roller 31, the upper portion of the post-transfer guide plate 48, the upper portion of the fixing roller 25, and the upper portion of the discharge roller 26 are provided on the cover 23. On the other hand, the lower portion 451 of the pre-transfer guide plate 45, the upper portion of the post-transfer guide plate 46, the fixing roller 2
The lower portion of the transfer roller 5 and the lower portion of the discharge roller 26 are provided in the housing body 21 so that when the cover 23 is opened, all of these transfer paper passages are opened, so that a paper jam can be easily removed. .

As the photosensitive drum 42, any photosensitive drum provided with an electrophotographic photosensitive layer on a conductive metal drum can be used. From the viewpoint of preventing the generation of ozone, it is desirable to use a positively charged photoconductor. As the organic photoreceptor, a charge transporting agent, particularly a combination of a hole transporting agent and an electron transporting agent and a monodispersed layer type photoreceptor containing a charge generating agent in a resin medium or a charge transporting agent containing a charge transporting agent are used. The photoreceptor may be a laminate type photoreceptor having a layer and a charge generating layer containing a charge generating agent. In this case, the charge generating layer (CGL) and the charge transporting layer (CTL) are laminated in this order or the reverse order. Photoconductor may be used.

Generally, in the case of a small printer or FAX, the diameter of the photosensitive drum is about 10 to 100 mm, and the thickness of the photosensitive layer is about 10 to 40 μm.

As the charging mechanism 43, a corona charger such as a corotron or a scorotron is used. For the purpose of stably and uniformly charging the photosensitive layer, a scotron charger, that is, a corona wire and a shield are used. And a charger provided with a grid provided at the opening of the shield on the photoconductor side is particularly suitable. In the apparatus shown in FIG. 2, the charging mechanism 43 is provided below the photoconductor drum 42, and is arranged so that the influence of the discharge product on the photoconductor is reduced as much as possible. The saturation charging potential of the photoconductor is generally 5
It is preferable to perform charging so as to be in the range of 00 to 2000 volts.

The one-component non-magnetic toner contained in the developing unit has a composition of a fixing resin such as styrene-acrylic resin, a coloring agent such as carbon black, and the like.
It contains a high molecular weight or low molecular weight charge control agent, a release agent, etc., and preferably has a median diameter of 4 to 15 μm.
m, and spherical particles are preferred.

The developing roller 53 and the sub-roller 54 used in this image forming system are formed of conductive elastic (rubber) rollers. The elastic roller is obtained by molding a composition obtained by mixing a conductive powder such as conductive carbon black or metal powder with an elastomer polymer such as urethane rubber or silicone rubber.

The volume resistance of the elastic developing roller 53 is:
Generally, it is preferably in the range of 10 ^{4 to} 10 ⁹ Ω · cm. If it is higher than the above range, it is difficult to apply a bias voltage. Tends to occur.

The hardness (Asker C hardness) of the elastic developing roller is preferably in the range of 60 to 85. If the hardness is higher than the above range, the toner layer should be brought into uniform contact with the surface of the photoreceptor. When the temperature is lower than the above range, it is difficult to transmit a sufficient pressure contact force, and the developing roller is liable to be worn. Further, regarding the surface roughness of the developing roller, the ten-point average roughness RZ defined in JIS B 0601 is preferably in the range of 5.0 to 12.0 in terms of toner holding properties and developability.

As the sub-roller 54, a roller made of a conductive elastic material is used similarly to the elastic developing roller 53. However, it is suitable for the sub-roller to have a considerably smaller hardness than the developing roller. Generally, 75 to 95 degrees of Asker F hardness is appropriate.

The stirring paddle 55 is used to stir the one-component toner contained in the developing housing and to supply the one-component toner to the sub-roller. And a flexible sheet member provided at the end of the frame member. The frame member and the sheet member are provided with a large number of holes so that the degree of stirring is not excessive. I am adjusting. The elastic sheet is formed of, for example, a PET film or the like, and is provided with elasticity so as to be in a curved state. Thus, the elastic sheet also acts to press the one-component toner against the sub-roller, and the one-component The supply of the system toner is performed smoothly.

A bias voltage for enabling reversal development is applied to the developing roller 53. This bias potential has the same polarity as the charged potential of the unexposed portion of the photoreceptor and, in absolute value, is higher than the potential of the exposed portion and lower than the potential of the unexposed portion. It is preferable to make On the other hand, it is preferable to apply a bias potential having the same polarity as the developing bias potential and a high absolute value to the sub-roller 54 in order to smoothly supply the one-component toner to the developing roller. Generally, it is preferable to apply a voltage that is higher by 0 to 600 volts in absolute value than the developing bias voltage.

As shown in FIG. 2, the sub-roller 54 and the developing roller 53 contact with each other downward by trailing, while the developing roller 53 and the photosensitive drum 42 contact with each other upward by trailing. Is preferably in the range of 1.05 to 3.1, while the peripheral speed ratio of developing roller 53 / photosensitive drum 42 is suitably in the range of 1.2 to 3. When the peripheral speed ratio is smaller than the above range, the supply of the one-component toner becomes insufficient. On the other hand, when the peripheral speed ratio is larger than the above range, the abrasion tendency of the roller or the drum increases.

As the transfer roller 31, a transfer voltage is applied from the back side of the transfer paper in a non-contact state with the photosensitive drum, and a conductive rubber roller is also used. The conductive rubber roller is similar to that of the developing roller, but preferably has a hardness of JIS A 30 ° to 80 ° and a volume resistance of 10 ^{3 to} 10 ¹⁰ Ω · cm. It is preferable to apply a transfer voltage having a polarity opposite to the charging polarity of the one-component toner to the transfer roller 31, and a current value of 2 μA to 20 μA is appropriate.

Image formation in this printer is performed as follows. 1) Charging Step: The photosensitive layer of the photosensitive drum 42 rotates in the direction of the arrow (clockwise) in FIG.
It is uniformly charged by corona from 3 (for example, positive corona). Generally, the surface potential of the photosensitive layer is set in the range of 500 to 2000 V in absolute value.

2) Image exposure step: In response to print data from a personal computer or word processor connected to the printer 2, a laser beam from the laser unit 24 is passed through the exposure passage 41 to the photosensitive drum 42.
The photosensitive layer is exposed to light to form an electrostatic latent image. As a result of performing image exposure using laser light, the potential of the portion corresponding to the light beam image of the photosensitive layer (that is, the portion irradiated with laser light) becomes 0 V to 300 V in absolute value, and the portion not irradiated with laser light (back The ground potential is kept at a dark decay potential from the main charging potential, and an electrostatic latent image is formed.

3) Developing step: The one-component toner is stirred by the stirring paddle 55, and is charged first by friction with the stirring paddle 55 or the wall of the developing housing 51. The charged one-component toner is supplied to the surface of the sub-roller 54 rotating in the direction of an arrow (clockwise) in FIG.
The developer is supported and transported to the developing roller 53 rotating counterclockwise, and is supplied to the developing roller 53. The thickness of the one-component toner layer on the surface of the developing roller 53 is regulated by the blade 56, and development is performed in contact with the photosensitive layer of the photosensitive drum 42. As described above, the final charging of the toner is performed by friction between the tip of the working portion of the blade and the developing roller. The one-component toner used for this development is
The photosensitive layer is charged to the same polarity as the potential of the unexposed portion of the photosensitive layer, so that the toner is adhered to the laser beam irradiated portion by reversal development.

4) Transfer process: The transfer paper stored in the paper feed tray 28 is supplied one by one between the transfer roller 31 and the photosensitive drum 42 by the paper feed roller 29 and the friction pad 30. The transfer of the toner image is performed in contact with the photosensitive drum 42 having the one-component toner image.

5) Fixing step: The transfer paper on which the toner image has been transferred is supplied to a pair of fixing rollers 25, and the toner image is heated and fixed. The transfer paper on which the toner image has been fixed is discharged onto a tray 27 by a discharge roller 26.

6) Post-process: Foreign matter such as paper dust adhering on the photosensitive drum 42 is removed from the surface of the photosensitive drum by the foreign matter collecting brush 44, while toner remaining on the photosensitive drum surface is transferred to the developing roller 53. Cleaning by the contact of

This printer employs a system in which a new process unit is replaced when a certain number of guaranteed prints are completed. This process unit is supplied to the user in the form of the package shown in FIG. 1. For example, the photoconductor unit 40 corresponds to the assembly member 1 of FIG. 1, and the developing unit 50 corresponds to the assembly member 2 of FIG. It is supposed to.

[Soft Packaging Material] In the present invention, the soft packaging material serving as the container wall of the package has a barrier property against moisture and the like, flexibility and strength as a package, and has a heat sealing property. An olefin resin for giving, a stretched plastic film for giving mechanical strength and heat resistance, etc., a metal foil for giving a gas barrier property against oxygen and the like, a gas barrier resin and the like are used in plural combinations, and the shape of the laminate is obtained. Used in.

As the heat-sealing resin film, generally, low-, medium-, high-density polyethylene, linear low-density polyethylene, isotactic polypropylene, propylene-ethylene copolymer, ethylene-vinyl acetate copolymer, Modified olefin resins such as ethylene-acrylic acid copolymer, ethylene-methyl methacrylate copolymer, ion-crosslinked olefin copolymer (ionomer), olefin resin graft-modified with ethylenically unsaturated carboxylic acid or anhydride thereof A polyamide or copolyamide resin having a relatively low melting point or low softening point; or a polyester or copolyester resin having a relatively low melting point or low softening point;
These films preferably have a thickness of 15 to 100 μm.

Examples of the film other than the heat-sealing resin include polyester films such as polyethylene terephthalate, polybutylene terephthalate, and ethylene terephthalate / isophthalate copolymer: nylon 6,
Polyamide films such as nylon 6, 6, nylon 11, nylon 12, etc .: propylene-based polymer films: polyvinyl chloride films: polyvinylidene chloride films: ethylene vinyl alcohol copolymer films, and the like. These films may be unstretched, uniaxially stretched or biaxially stretched. It is desirable that the thickness is generally in the range of 3 to 50 μm, particularly 5 to 40 μm. The use of a uniaxially stretched film is preferable because tearing properties can be obtained in the molecular orientation direction.

As the metal foil used for imparting gas barrier properties, various surface-treated steel foils or light metal foils such as aluminum are used. As the surface-treated steel foil, one or two or more kinds of surface treatment such as zinc plating, tin plating, nickel plating, electrolytic chromic acid treatment, chromic acid treatment, etc. are performed on cold-rolled steel foil, or prior to final rolling. The surface-treated steel foil obtained by performing the plating treatment and then performing the cold rolling treatment can be used. As light metal foil,
An aluminum alloy foil is used in addition to a so-called pure aluminum foil. These metal foils have a thickness of 150 μm or less, particularly 5 to 120 μm.

[0052] One surface of the metal foil may be provided with a protective coating by a method other than lamination. The formation of the protective coating is performed by providing a protective coating. As the protective coating, any protective coating composed of a thermosetting or thermoplastic resin: for example, a modified epoxy coating such as a phenol-epoxy coating or an amino-epoxy coating: for example, a vinyl chloride-vinyl acetate copolymer, a vinyl chloride-vinyl acetate Partially saponified copolymer, vinyl chloride-vinyl acetate-maleic anhydride copolymer, epoxy-modified, epoxyamino-modified or epoxyphenol-modified vinyl or modified vinyl paint such as vinyl paint: acrylic resin paint: styrene -One or a combination of two or more of synthetic rubber-based paints such as butadiene-based copolymers is used. These paints are used in the form of an organic solvent solution such as enamel or lacquer, or in the form of an aqueous dispersion or aqueous solution, such as roller coating, spray coating, dip coating, electrostatic coating, electrophoretic coating, etc. Apply to the material. Of course, if the resin coating is thermosetting, the coating is baked if necessary. The protective coating is generally 2 to 30 μm, particularly 3 μm, from the viewpoint of corrosion resistance and workability.
It is desirable to have a thickness (in a dry state) of from 20 to 20 μm.

As the gas barrier resin, a thermoplastic resin having a low oxygen permeability coefficient and being thermoformable is used. As the most suitable example of the gas barrier resin, an ethylene-vinyl alcohol copolymer can be mentioned,
For example, if the ethylene content is 20 to 60 mol%, especially 2
A saponified copolymer obtained by saponifying an ethylene-vinyl acetate copolymer of 5 to 50 mol% to have a saponification degree of 96 mol% or more, particularly 99 mol% or more is used. The saponified ethylene-vinyl alcohol copolymer should have a molecular weight sufficient to form a film, and is generally 85: 1 by weight phenol: water.
5 at 30 ° C in the mixed solvent

Other examples of the gas barrier resin having the above-mentioned properties include polyamides having 5 to 50, especially 6 to 20, amide groups per 100 carbon atoms; for example, nylon. 6, nylon 6,6, nylon 6 / 6,6 copolymer, metaxylylene adipamide, nylon 6,10, nylon 11, nylon 12, nylon 13, hexamethylene terephthalamide / isophthalamide copolymer, or These blends are used. These polyamides should also have a molecular weight sufficient to form a film, and have a relative viscosity (ηrel) measured at a concentration of 1.0 g / dl in concentrated sulfuric acid at a temperature of 30 ° C. of 1.1 or more, especially 1.5 or more. Is desirable.

[0055] These gas barrier resins are 5 to 5
Used at a thickness of 0 μm.

Suitable examples of the laminate include olefin resin heat seal layer / uniaxially oriented polypropylene film, olefin resin heat seal layer / biaxially oriented nylon film, olefin resin heat seal layer / biaxially oriented polyethylene terephthalate film, Olefin resin heat seal layer / aluminum foil / biaxially oriented polypropylene film, olefin resin heat seal layer / aluminum foil / biaxially oriented nylon film, olefin resin heat seal layer / aluminum foil / biaxially oriented polyethylene terephthalate film, olefin Resin heat seal layer / ethylene vinyl alcohol copolymer / biaxially oriented polyester film film, olefin resin heat seal layer / amorphous aromatic polyamide / biaxially oriented polyethylene terephthalate Tofirumu, although an olefinic resin heat seal layer / metallized biaxially oriented polyethylene terephthalate film or the like, not limited to this example. The overall thickness of the laminate is preferably in the range from 50 to 1000 μm.

The laminate is manufactured by dry lamination,
It can be carried out by any means known per se, such as sandwich lamination, extrusion coating, coextrusion and the like. When sufficient adhesiveness cannot be obtained between the layers, an adhesive resin such as a urethane-based adhesive, an epoxy-based adhesive, and an acid-modified olefin-based resin adhesive can be used.

These soft packaging materials are generally used in the form of pouches for packaging assembly parts. That is, the sheets of the soft wrapping material are overlapped so that the heat-sealable resin layers face each other, and the edges are sealed to form a three-side seal pouch or a four-side seal pouch. In forming the pouch, a gusset extending in the longitudinal direction of the assembly member may be formed. Alternatively, the edges of the soft wrapping material may be overlapped with each other and back-adhered to form a pillow packaging pouch. Opening notches or weakenings can be formed at the edges of these pouches to facilitate manual tearing.

[Spacer] As the spacer member to be inserted from the outside of the soft packaging material sheet into a portion where the assembly members can come into close contact with and separate from each other, a material having a buffering property, generally a polymer foam material, cardboard, corrugated paper, wood, or the like can be used. Etc. are used.

Examples of the polymer constituting the foam include low-, medium- or high-density polyethylene, isotactic polypropylene, syndiotactic polypropylene, linear low-density polyethylene, ethylene-propylene copolymer, and polybutene. -1, ethylene-butene-1
Copolymer, propylene-butene-1 copolymer, ethylene-propylene-butene-1 copolymer, ethylene-vinyl acetate copolymer, ion-crosslinked olefin copolymer (ionomer), ethylene-acrylate copolymer And styrene resins.
Is mentioned.

In addition, foamed or unfoamed elastomeric polymers such as nitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), polybutadiene (BR), polyisoprene (IIB), butyl rubber , Natural rubber, ethylene-propylene rubber (EPR), ethylene-propylene-diene rubber (EPDM), polyurethane, silicone rubber, acrylic rubber and the like; thermoplastic elastomers such as styrene-
Butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, hydrogenated styrene-isoprene-styrene block copolymer and the like can also be used.

[0062] These spacers may be continuous in the longitudinal direction of the assembly member, but it is generally appropriate to provide one spacer at each end of the close and detachable portion of the assembly member. Since the separation dimension differs depending on the size and size of the assembly member, it cannot be specified unconditionally, but it is generally preferable to select an appropriate dimension from the range of 1 to 5 mm.

[0063]

According to the present invention, it is an object of the present invention to provide a packaging in which an assembling member having a part which can be closely and detachably provided between the assembling members is wrapped in a soft packaging material. In the body, the spacer is detachably inserted from the outside of the soft wrapping material to a detachable portion between the assembly members, so that the assembly member is released from the close state during transportation and storage of the package, In the state taken out from, it can be restored to a close state without any special labor and attention.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a package of the present invention.
(A) shows the package sealing state, and (B) shows the package opening state.

FIG. 2 is a layout view of a process unit of the image forming apparatus used in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st assembly member 2 2nd assembly member 3 pin 4 movable part 5 spring 6 soft packaging material 7 spacer 7a base 7b insertion part 12 printer 14 process unit 15 support shaft 20 body housing 21 box-shaped main body 22 shaft 23 cover 24 Laser Unit 25 Fixing Roller 26 Discharge Roller 27 Discharge Tray 28 Feed Tray 29 Feed Roller 30 Friction Pad 31 Transfer Roller 40 Photoconductor Unit 41 Exposure Path 42 Photoconductor Drum 43 Charging Mechanism 44 Foreign Material Collection Brush 45 Before Transfer Guide plate 46 Guide plate after transfer 50 Developing device unit 51 Phenomenon housing 53 Developing roller 54 Sub-roller 55 Stirring paddle 56 Blade 57 Bottom part

Continuing from the front page (72) Inventor Masayuki Ishii 1-2-2, Tamazo, Chuo-ku, Osaka-shi Inside Mita Kogyo Co., Ltd. (72) Inventor Shizuji Kado 1-2-28, Tamazo, Chuo-ku, Osaka-shi Mita Industry Co., Ltd.

Claims (8)

[Claims] 1. A package formed by packaging an assembling member of an apparatus, wherein a part which can be closely and detachably provided between said assembling members is wrapped in a soft wrapping material. A packaging body for an assembly member, wherein a spacer is removably inserted into a detachable portion between the assembly members. 2. The package according to claim 1, wherein said spacer comprises a wide base portion and a narrow insertion portion. 3. The package according to claim 1, wherein the spacer is formed of a cushioning material. 4. The package according to claim 1, wherein the closeable and detachable portion includes a pressure applying unit. 5. The package according to claim 4, wherein said pressure applying means comprises a pin which swingably connects the assembly members and also serves as a fulcrum, and a tension spring provided between said assembly members at a position separated from said pins. body. 6. The package according to claim 5, wherein the cushioning material is inserted from a side of a tension spring. 7. The package according to claim 1, wherein the assembling member comprises a photosensitive drum unit connected via a pin so as to be able to swing and press-contact, and a developing unit. 8. The package according to claim 7, wherein the developing unit includes a developing roller made of an elastic material.