JP2003159710A - Part and assembly part for electronic instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a part for an electronic instrument to which at least one easily recyclable sheet-like member is attached, the sheet-like member attached to the part for the electronic instrument, and assembly parts including the member. <P>SOLUTION: In the part for the electronic instrument to which at least one sheet-like member in which image information is written is attached, the part and the sheet-like member are constituted of thermoplastic resins compatible with each other. The surface area of all the image information written in the sheet-like member is characteristically set to 1% or less of the surface area of the part. Further, a ratio of the surface area of the image information written in the sheet-like member to all the surface area of the assembly parts is also characteristically constituted to be 1% or less. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component of electronic equipment to which at least one sheet-like member is attached, a sheet-like member to be attached to a component of electronic equipment, and an assembly part including the same. Is.

[0002]

2. Description of the Related Art In recent years, in image forming apparatuses such as copiers, printers, facsimiles or multi-function peripherals thereof, and in electronic equipment such as various electric products, it is common practice to attach a sheet-like member to its components. ing. For example, sheet-shaped members called decals are attached to the front door of the copying machine main body and various parts inside thereof, and such decals are flexible such as resin sheets, resin films, and thin resin plates. It is composed of a sheet-like piece having flexibility or rigidity, and has predetermined information written on its surface. More specifically, for example, in a copying machine, a decal on which various image information such as a brief description and a part replacement order number is written for a user or a service person is a part of the copying machine. Pasted on. The image information written on the surface of the decal may be represented by characters, symbols such as arrows, figures, or colors.

In addition to such decals, for the purpose of protecting parts of electronic equipment, a sheet-like member made of a protective sheet having flexibility or rigidity for the parts themselves or parts such as a case for accommodating the parts. May be attached. A sheet-like member made of such a protective sheet or decal may be attached to a replacement part of an electronic device such as a toner cartridge of a copying machine.

By the way, particularly in recent years, for the purpose of environmental protection and further resource saving, the emergence of products having excellent recyclability has been strongly demanded, and office automation equipment such as image forming apparatuses and electronic products such as electric products have been strongly demanded. The same is required for devices. Therefore, conventionally, a component of an electronic device is made of a thermoplastic resin, and when the component is used up, the component is recycled without being discarded. For example, the used parts are crushed into pellets by a shredder, heated and melted to be molded again as some parts, and the regenerated molded product is reused. Conventionally, a part to which a sheet-shaped member such as the decal or the protective sheet described above is adhered, because the part and the sheet-shaped member are made of different materials,
When this is crushed and melted as it is, the two do not melt each other, and when a recycled component is molded with such a molten material, its mechanical properties are remarkably deteriorated and it cannot be reused as the component. Therefore, a sheet-shaped member is peeled off from a used component by a dryer or a grinder, and then the component is crushed into pellets and melted to obtain a remolded product. However, the work of peeling off the sheet-shaped member from the component is a laborious and time-consuming work, which inevitably raises the cost of recycling the component.

Further, conventionally, in a component of an electronic device to which at least one sheet-shaped member on which image information is written is attached, the component and the sheet-shaped member are made of mutually compatible thermoplastic resins. Then, the surface area of all the image information written on the sheet-like member is set to 20% or less of the surface area of all the sheet-like members, and a component of an electronic device is proposed.

However, in the above-mentioned electronic device parts, under certain conditions, the surface area of all image information written on the sheet-shaped member is certainly equal to the surface area of all sheet-shaped members. By setting the ratio to 20% or less, even if the sheet-shaped member is attached to the component and regenerated, it is possible to prevent the characteristic of the regenerated molded article from being significantly deteriorated and reduce the regenerating cost. . Moreover, there is an effect that it is possible to prevent deterioration of the appearance of the regenerated molded product. However, even if the surface area of all the image information written on the sheet-shaped member is set to 20% or less of the surface area of all the sheet-shaped members, it is reproduced depending on the size of the sheet-shaped member. The effect of preventing the deterioration of the characteristics of the molded product and the deterioration of the appearance of the regenerated molded product changes. That is, even if the sheet member is set to 20% or more, the above problem does not occur if the sheet-shaped member is attached to a large electronic device component. If the size of the electronic device part to which the sheet-shaped member is attached is small, 20%
The above-mentioned problems occur even with the following sheet members. Therefore, the inventors of the present invention, regardless of the size of the components of the electronic device to which the sheet-shaped member is attached,
We have found a patented invention that does not occur. A patented invention for solving these problems will be described later.

[Means for Solving the Problems]

According to the first aspect of the present invention, in a component of an electronic device to which at least one sheet-shaped member having image information is attached, the component and the sheet-shaped member are compatible with each other. To provide a component of an electronic device, characterized in that the surface area of all image information written on the sheet-shaped member is set to 2% or less of the surface area of the component made of a certain thermoplastic resin. is there.

According to the invention of claim 1, the ratio of the surface area of the image information of the seal-like member to the surface area of the part is determined, so that the surface area of the image information depends on the size of the part. Due to constraints, large parts can be provided with a large surface area for image information. Moreover, by doing so, even if the sheet-shaped member is attached to the part and regenerated, it is possible to prevent a problem that the characteristics of the regenerated molded article are significantly deteriorated, and it is possible to reduce the regeneration cost. Moreover, there is an effect that it is possible to prevent the appearance of the regenerated molded product from being deteriorated.

The invention of claim 2 is composed of a plurality of parts, and the part is made of a thermoplastic resin, and at least one of the parts has at least one image information recorded therein. In an assembly part having a part including at least one part to which the sheet-like member is attached, the ratio of the surface area of the seal-like member in which the image information is entered to the image information portion to the total surface area of the assembly part is The present invention provides an assembly part characterized by being configured to be 1% or less.

According to the second aspect of the present invention, even if one resin component having the seal-shaped member stretched does not satisfy a certain ratio, the entire (assembled component) has a certain ratio cleared. Then, if one component already has a margin in the above-mentioned ratio, it is acceptable even if it exceeds the above-mentioned ratio in the other components. In other words, in the parts exceeding the above ratio, the seal-like member with a large image information part,
Since it can be used, the operation sticker is easy to handle for the user (for example, a sticker with a large image information part)
Can be attached. In addition, PL
It also has the effect of being able to comply with the law.

The invention of claim 3 is composed of a plurality of parts, and the parts are made of a thermoplastic resin, and at least one of the parts is provided with at least one piece of image information. In the assembled part having a plurality of parts including at least one part to which the sheet-shaped member is attached, the condition of the seal-shaped member represented by the following conditional expression is shown: aA ≧ (J1) * (B1 ) / (H1) + (J2) * (B
2) / (H2) + (J3) * (B3) / (H3) + ...
・ ・ ・ + (Jn) * (Bn) / (Hn) a = 0.01 A: Total weight of assembly parts (including sealing member) B1: Weight of sheet-like member (first) H1: Sheet-like member Surface area (first) G1: surface area of parts (first) J1: surface area of image information (first) B2: weight of sheet-shaped member (second) H2: surface area of sheet-shaped member (second) G2: parts Surface area (second) J2: surface area of image information (second) B3: weight of sheet member (third) H3: surface area of sheet member (third) G3: surface area of parts (third) J3: image Information surface area (third) Bn: Weight of sheet member (nth) Hn: Surface area of sheet member (nth) Gn: Surface area of parts (nth) Jn: Surface area of image information (nth) ) To provide an image forming apparatus that satisfies That.

According to the invention of claim 3, the effect of the invention of claim 2 is obtained, and the effect of easily determining the surface area of the image information of the sheet-like member and the surface area of the sheet-like member. There is.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to specific examples shown in the accompanying drawings. The following embodiment is an example embodying the present invention and is not of the nature to limit the technical scope of the present invention. FIG. 1 shows, according to the invention,
1 is an example showing an outline of an image forming apparatus that is performed using an image forming apparatus 100 of a so-called in-body sheet discharge type in which a sheet stack space is provided in an intermediate portion between an image forming unit and a scanner.
FIG. 2 is a schematic view of the right side surface of the image forming apparatus 100, except for the document transport unit 14 described later, except for the document cover unit. The copying machine 100 is divided into a main body housing 11, an upper housing 11U above the main body housing 11, and a document conveying section 14 placed on the upper part of the upper housing so as to be openable.
A sheet material stack space portion 12 is formed in an intermediate portion between the main body housing 11 and the upper housing 11U so as to extend inward in a substantially horizontal direction from the right side surface. In the sheet material stack space portion 12, the upper sheet tray 1 for receiving and stacking the sheet material discharged laterally from the main body housing,
A lower sheet tray 2 is provided.

The upper housing 11U has a built-in exposure unit 15 for exposing the original at the image reading position to read the image, and the scanning panel 13 and the original placing plate 21 made of a transparent glass plate are arranged on the upper surface thereof. It is set up. Above the upper housing 11U, a document transport unit 14 for transporting a document to an image reading position R for reading a document image is placed. The document conveying section 14 is supported by the hinge section 9 on the back side of the machine so that it can be flattened on the upper housing. It is normally placed in the closed position shown by the solid line and can be opened up to the open position shown by the broken line. The copying machine 100 is capable of performing two types of document image reading, a sheet through system and a document fixing system. First, the sheet-through method is a method in which an image of a document passing through the image reading position R is read by the closed document feeding unit 14 by the exposure unit 15 which is fixedly arranged facing the image reading position. Further, in the fixed original type method, the original conveying unit 14 is opened, the original is placed on the upper surface of the original placing plate 21, and the exposure unit 15
This is a method of reading an image while moving the. The present embodiment will be described as an example based on the sheet-through method.

The body housing 11 is a lower housing 11.
It can be divided into D and the connecting housing 11C above it. The lower housing 11D incorporates a paper feed unit, an image forming unit that forms a toner image on the paper, and a fixing unit that fixes the toner image on the paper. Connection housing 11
C has a built-in paper feed path for feeding the fixed paper and discharging it toward the sheet tray in the sheet material stack space.

The structure of the upper housing 11U will be described with reference to FIGS. An operation panel 13 is provided on the front side of the upper housing 11U. The document feeding unit 14 includes a document feeding tray 14a, a document feeding unit main body 14b, a document discharging tray 14c, and a document cover 14d. The document discharge tray 14c is formed directly on a part of the upper surface of the document cover 14d. A document feed tray 14a is provided at the upstream end of the extension of the document transport path D, and a document discharge tray 14c is provided at the downstream end of the extension of the document transport path D. The document reading section main body 14b has a pickup roller 22 along the document transport path D from the upstream side to the downstream side in the document transport direction.
A conveyance roller pair 23, a registration roller pair 24, and a discharge roller pair 25 are provided. The transport roller pair 23 is composed of a drive roller 23a and a separation roller 23b. The separation roller 23b rotates in the opposite direction to the drive roller 23a only when the rotational load is below a predetermined torque, and is driven to rotate with the drive roller 23a when the rotational load exceeds a predetermined torque.

Registration roller pair 24 and discharge roller pair 25
An image reading unit R is provided between them. At the image reading position R, a white reference plate 26 for shading correction is provided in a direction facing the original placing plate 21, and the white reference plate 26 above the white reference plate 26 is pressed against the original placing plate 21. And a document pressing portion 26a. The document transport path D is curved so as to be inverted between the transport roller pair 23 and the image reading position R. Each sensor is provided from the upstream side to the downstream side of the document conveyance path D. That is, the document detection sensor S1 is provided at the center of the document feed tray 14a.
Is provided, and the paper feed sensor S is provided on the downstream side of the pair of transport rollers 23.
2 and a discharge sensor S3 is provided on the downstream side of the discharge roller pair 25.

The following description will be made on the basis of a so-called sheet-through document reading method in which a document is transported by the document transport unit and is exposed by a fixed exposure lamp. The M originals set with the image surface upward on the original feeding tray 14a are pressed against the pickup roller 22 with a predetermined pressure by the set original pressing member 6b biased upward by the spring member 6a. When the copy start button on the operation panel 13 is turned on, the pickup roller 22 and the carry roller 23 are rotationally driven by a primary paper feeding drive means (not shown). A plurality of originals set on the original feed tray 14a are normally sent from the upper surface side to the pair of conveying rollers 23 by the pickup roller 22. Transport roller pair 23
For the plurality of originals sent to, the uppermost one is separated by the separating roller 23b and is conveyed toward the registration roller pair 24. After the leading edge of the document is conveyed by a predetermined distance after being detected by the sheet feeding sensor S2, the driving roller 23a of the conveying roller pair 23 is stopped by stopping the operation of the sheet feeding driving means.
Then, the rotation driving of the pickup roller 22 is stopped, and the primary sheet feeding is completed. The leading edge of the document is a pair of registration rollers 24
It is stopped by being pressed by the nip portion and having a bend formed at its tip.

After a lapse of a predetermined time from the completion of the primary paper feeding,
Secondary paper feeding is started. That is, the registration roller pair 24 is rotationally driven by the operation of the secondary paper feeding drive means (not shown). The document is conveyed by the registration roller pair 24 toward the image reading position R and the discharge roller pair 25, and finally by the discharge roller pair 25.
is discharged onto c. Completion of image reading of one original is detected by detecting the passage of the trailing edge of the original by the paper ejection sensor S3 provided on the downstream side of the pair of ejection rollers. The paper ejection sensor S3 has a counting function of counting the number of originals each time the originals are fed and conveyed. If the original set detection sensor S1 detects a subsequent original, the second and subsequent originals are conveyed. Continued. When the document passes through the image reading position R, the white reference plate 26 and the document pressing portion 26a convey the document placing plate 21 while lightly pressing the surface of the document placing plate 21 so that the image surface of the document opposes the document placing plate. Optical scanning is performed by the lamp 27.

Next, the exposure section 15 will be described. In this embodiment, both a sheet-through image reading method known per se and a general optical system moving method are adopted. In FIG. 2, the exposure lamp 27 and the reflector 28
A first mirror 29, a second mirror 30, a third mirror 31, a condenser lens 32 and an image sensor, for example, a line type C
It is equipped with a CD33. Exposure lamp 27 and first mirror 2
9 is mounted on a first carriage (not shown), and the second mirror 30 and the third mirror 31 are mounted on a second carriage (not shown). At the time of reading an original by the sheet-through method, the first carriage moves directly below the image reading position R, and the light irradiation light from the exposure lamp 27 exposes the original. The irradiation light is the first mirror 29 and the second mirror 3.
0, the third mirror 31, and the condenser lens 32 through the CCD 3
Reach 3. Here, the original image on the original placing plate 21 is read and scanned by the exposure unit 15, and the CCD
A reduced image is formed on 33, and a photoelectric conversion process is performed to read it as an electric signal. In addition, in the optical system moving method,
The original placed on the contact glass is read while the first and second carriages are moving.

Next, of the lower housing 11D and the connecting housing 11C forming the main body housing 11, the structure of the lower housing will be described. A sheet cassette 34 and an image forming unit 36 are provided in a paper feeding unit below the lower housing 11D.
And a fixing device 37. The sheet material P stored in the sheet cassette 34 is delivered one by one by the delivery roller 34a. An openable / closable manual paper feed tray 35 is provided on the lower left side of the lower housing 11D, and the sheet materials P set in the manual paper feed tray 35 are also fed out one by one by a feeding roller 35a.

Next, the image forming section will be described. In the image forming unit 36, the photoconductor drum 38 is a negatively chargeable organic photoconductor drum, and is 10 in the direction shown in the drawing when driven.
Rotate at a speed of 0 mm / sec. The surface of the photoconductor drum 38 is a main charger 3 to which a high voltage of -5 KV is applied.
After being uniformly charged to −750V by the corona discharge generated from 9, the light potential of −100V and the dark potential of −75 were obtained by irradiation of the beam light from the laser scanning unit 40.
An electrostatic latent image consisting of a 0V portion is formed. Further, the electrostatic latent image is rotationally moved to the developing position by the rotation of the photoconductor. When driven, the developing roller 41a inside the developing device 41 is 210 mm in the same direction as the photosensitive drum in the developing area.
Rotating at a speed of / sec. In the developing unit 41, for example, 5 parts by weight of a negatively chargeable toner having a volume average particle diameter of 9 μm (median diameter by Coulter counter) and an average diameter of 80 μm
The developing roller 4 has a developer obtained by mixing 95 parts by weight of a magnetic ferrite carrier (sieving method).
By applying a developing bias voltage of -550V to 1a, the toner is reversely developed on the exposed portion of the surface of the photoconductor to form an electrostatic latent image into a toner image.

The sheets fed one by one from the sheet cassette 34 or the manual feed tray 35 and conveyed upward through the conveying path 3 are synchronized with the toner image on the photoconductor approaching the roller transfer section 42. , Registration roller 4
The conveyance timing is adjusted by and the sheet is conveyed between the photosensitive drum 38 and the transfer roller 42. As a result, most of the toner in the toner image is transferred onto the sheet by passing the roller transfer section while the leading edge of the sheet coincides with the leading edge of the toner image portion. Part of the toner remaining on the surface of the photosensitive drum without being transferred onto the paper is removed by the cleaner 41 provided at the most downstream side. The sheet on which the toner image is transferred is sent to the fixing device 37. The fixing device 37 includes a heat roller 38a and a pressure roller 38b, and a toner image is fixed on a sheet by a pair of these rollers to obtain a copy.

The sheet that has passed through the fixing nip is directly conveyed upward along the vertical conveyance path 42 in the vertical direction. When the vertical transport path 42 enters the connecting housing 11C and passes the transport roller pair 43, it branches into a horizontal transport path 44 to the right and a transport path 45 diagonally above, and a branching claw that sorts the transport direction of the paper at the branch point. 46 is provided. In FIG. 2, the sheet is distributed to the horizontal transport path 44 in the traveling direction and discharged onto the lower sheet tray 2.

Based on the image forming apparatus described above, the seal member which is a feature of the present invention will be described. still,
The following embodiments are examples of embodying the present invention and are not of the nature to limit the technical scope of the present invention. (A) First invention (Claim 1) The first invention is 1% or less of the surface area of at least one sheet-shaped member on which image information is entered and the surface area of the electronic device part to which the sheet is attached. It is characterized by being set to. The present invention will be described with reference to FIGS. FIG. 1 shows an image forming apparatus which is an example of an electronic apparatus. The image forming apparatus includes an outer cover 301 of its main body.
A front door 302 pivotally attached to a main body frame (not shown) so as to be openable and closable, a pressure plate 303 for pressing a document provided on the upper portion of the main body, various elements (not shown) housed inside the main body, etc. It is composed of many parts. Here, the front door 2 is taken as an example of the component, and a specific example in which the present invention is applied to the front door 302 will be clarified.

The front door 302 is rotatably supported by the main body frame between a closed position shown by a solid line in FIG. 1 and an open position shown by a chain line. , At least one sheet-shaped member is attached. In the example of FIG. 1, a sheet-shaped member made of a first decal 304 is attached to the front surface of the front door 302, and a second decal 305 is attached to the back surface of the front door 2. As described above, the decals 304 and 305 are made of flexible or rigid sheets, films, or thin plate-shaped pieces, and predetermined image information is written on the surfaces thereof. In this example, the first decal 304 is shown in FIG.
As shown in FIG. 5, the order for the consumables and the contact information for repairing the image forming apparatus are entered, and the second decal 305 has image information for explaining the procedure for removing the sheet having the transport trouble as shown in FIG. It is filled in. Such a decal is often configured so that a user of a copying machine or a distributor thereof can fill in predetermined information with a ballpoint pen or the like. Or
Make sure that the seller fills in the repair contact information each time.
The decal 304 can also be configured. When the above-mentioned copying machine is used up, the copying machine is brought in from the user to a recycler and dismantled there. The reusable parts are then recycled and reused. Here, in order to facilitate the reproduction processing of the image forming apparatus, the front door 302, which is an example of the component thereof, is made of a thermoplastic resin, and the first and second decals are sheet-like members adhered to the front door 302. 304 and 305 are also made of thermoplastic resin. Moreover, the front door 2 and the decals 304 and 305
Are composed of mutually compatible thermoplastic resins. In this way, the component of the electronic device and the sheet-shaped member attached to the component are made of the thermoplastic resin having compatibility with each other.

According to the above-mentioned structure, while the decals 304 and 305 are attached to the front door 2, the decals 304 and 305 are crushed into pellets having a side of about 5 mm by a shredder (not shown), and the pellets are heated and melted. By doing so, the resin material forming the front door 2 and the resin material forming the decals 304 and 305 melt well with each other.
If a predetermined part is molded by a molding machine (not shown), it is possible to remanufacture a part having characteristics that can be sufficiently used. Generally, the exterior cover 301 and the front door 302 of the copying machine are made of PS (polystyrene), PPE (polyphenylene ether), ABS (acrylic butadiene
It is often composed of a thermoplastic resin such as styrene) or PPO (polyphenyl oxide), but as the decals 304 and 305 attached to the front door 302 made of these resin materials, the resins exemplified below. Preference is given to using materials. For the front door 302 made of PS, for example, PC (polycarbonate) or PMMA (methacrylic resin) compatible with the front door 302, and decals 304, 3 made of the same PS as the material of the front door 302 are used.
05 can be used advantageously. For the front door 302 made of PPE, for example, P which is compatible with it
S, PET (polyethylene terephthalate), ABS,
Besides PC or PMMA, decals 304, 305 made of the same PPE as the material of the front door 2 can be advantageously used. Furthermore, for the front door 302 made of ABS,
Compatible with eg PS, PET, PC or P
Besides MMA, decals 304 and 305 made of the same ABS as the material of the front door 2 can be advantageously used. PP
For the front door 302 made of O, decals 304 and 305 made of PPO which is the same as the material of the front door 302, as well as PS or ABS having compatibility therewith, can be advantageously used. By constructing the sheet-shaped member composed of the front door 302 and the decals 304 and 305 attached thereto by the thermoplastic resin as exemplified above, the sheet-shaped member can be removed without peeling off the sheet-shaped member from the front door 302. Even if it is recycled as it is, the properties of the recycled product, such as mechanical strength (bending strength and impact strength), are not significantly reduced. In this way, the recycling cost can be reduced, and the cost of the recycled molded product can be reduced.

Here, it is understood from the above that the thermoplastic resin forming the parts of the electronic device and the thermoplastic resin forming the sheet-like member attached to the electronic parts are compatible with each other. As a result, the molded products obtained by regenerating these can be used for their original purpose so that each heat component constituting the parts and sheet-shaped member before the remanufacturing can be maintained to such an extent that the characteristics that can withstand the use can be maintained. It means that the plastic resins are compatible with each other. By the way, front door 302
Since the decals 304 and 305 are made of mutually compatible thermoplastic resins, when the decals 304 and 305 are attached to the front door 302, it is possible to attach them by heat fusion. There is no need to use an adhesive to attach the two to each other. On the other hand, the decals 304 and 305 can be attached to the front door 302 using an adhesive. At that time, since the amount of the adhesive used is generally extremely small, compatibility between the adhesive and the front door 302 and the decals 304 and 305 does not have to be particularly considered. It is particularly advantageous to use a thermoplastic resin that is compatible with the door 302 and the decals 304 and 305.

That is, as the adhesive for adhering the sheet-shaped member to the component of the electronic device, a thermoplastic resin compatible with the component and the sheet-shaped member is used. If such a configuration is adopted, when the parts such as the front door 302 are crushed and melted as described above without peeling off the sheet-shaped members such as the decals 304 and 305, the entire compatibility including the adhesive is further improved. It is possible to more reliably prevent deterioration of the characteristics of the molded product that has been enhanced and regenerated. Front door 3
For example, PMMA can be used as the adhesive of the thermoplastic resin that joins 02 and the decals 304 and 305. Such adhesive has good compatibility with PS, PPE, ABS, etc., and therefore adheres PMMA. When used as an agent, the front door 302 and the decals 304 and 305 are preferably made of a resin such as PS, PPE, or ABS. Here, front door 302 and decal 3
A member in which 04 and 305 are integrated will be described. As described above, image information (pictograms, etc.) is written on the sheet-like members such as the decals 304, 305 shown in FIGS. Therefore, when such decals 304 and 305 are attached to the front door 2 according to the configuration of each of the above-described embodiments and the reproduction processing is performed,
The ink on the decals 304 and 305 appears as a lot of dots on the surface of the regenerated molded product, which may deteriorate the appearance of the regenerated molded product.

[0029]

[Table 1]

Here, Table 1 shows the performance when the component and the sheet-shaped member are crushed as they are and heat-welded. The horizontal axis is (surface area of all image information entered on the sheet-shaped member / surface area of parts) (%) or (surface area of the seal-shaped member on which image information is entered and the image information part / assembly parts) Total surface area (%) = content ratio (CONT). The horizontal axis is the ink generation status,
It is the external color of parts, the warp of molded products, and the strength of molded products. Ink generation status A: No ink appears on the surface of the recycled molded product. ○: Ink is slightly visible on the surface of the remolded product, but there is no problem. Δ: A state in which a little dot-like ink appears on the surface of the regenerated molded product. ×: A lot of ink appears in dots on the surface of the remolded product. External color of parts ◎: There is no color variation on the surface of recycled molded products. ○: A slight variation is seen on the surface of the remolded product, but there is no problem. Δ: A state in which some variation appears on the surface of the regenerated molded product. ×: A lot of variation appears on the surface of the remolded product. Molded product warp ◎: A condition where the molded product does not warp on the surface of the recycled molded product. ○: A slight warp is seen on the surface of the recycled molded product, but there is no problem. Δ: A state where a slight amount of warp appears on the surface of the recycled molded product. ×: A lot of warp appears on the surface of the recycled molded product. Strength of molded products ◎ ... The strength of recycled molded products is equivalent to that of regular products. ◯: The strength of the recycled molded product is slightly different from that of the normal product, but there is no problem. Δ: The strength of the regenerated molded product is slightly inferior to that of the normal product. X: The strength of the regenerated molded product is considerably inferior to that of the normal product. From the above results, the content ratio (CONT) is 0.1%
The following is an extremely good condition that clears various conditions.

Therefore, in the structure of the embodiment, the surface area of all image information (pictograms etc. in the sheet-shaped member) written on the sheet-shaped member may be set to 1% or less of the surface area of the part. preferable. Front door 30 shown in FIG.
In the example of No. 2, since the first and second decals 304 and 305 are attached to the front door 2, the surface area written on both the decals 304 and 305 is the front surface of the front door 30.
It is suppressed to 2% or less of the surface area of 2. If such a configuration is adopted, it is possible to prevent the ink from appearing in the form of dots on the surface when crushing and melting the parts with the sheet-shaped member attached and regenerating the molded product as described above, or You can keep it small enough to ignore.
As a result, it is possible to reliably prevent deterioration of the appearance of the remolded product. Further, when a recycled component is molded with such a molten material, the mechanical properties of the recycled component are not significantly deteriorated, and the recycled component can be reused as the component.

(B) Second Invention (Claim 2) In the second invention, the ratio of the surface area of the image-formed portion of the seal-shaped member in which the image information is written to the weight of the assembly part is 1% or less. It is characterized by being configured in.
The present invention will be described based on FIGS. 1 to 4 and Table 1. Here, the assembled component is made up of the plurality of components.
The parts include those that are integrated or that are separated but have the same functions, colors and ideas. For example, electronic parts, exterior parts of the image forming apparatus (front cover, rear cover,
Although the upper covers and the like) are separated from each other, they can have the same effect as those in which the parts having the same color and the same function are included in the assembly parts and are integrated. . FIG. 1 shows an image forming apparatus which is an example of an electronic apparatus. The image forming apparatus includes an outer cover 301 of its main body.
A front door 302 pivotally attached to a main body frame (not shown) so as to be openable and closable, a pressure plate 303 for pressing a document provided on the upper portion of the main body, various elements (not shown) housed inside the main body, etc. It is composed of many parts. Here, as an example of the parts, the front door 302 and the ceiling cover 31 are provided.
0 and the rear cover 311 are taken up, and a specific example in which the present invention is applied to the front door 302, the top cover 310, and the rear cover 311 will be clarified. The assembly parts here are a set of the front door 302, the top cover 310, and the rear cover 311.

(1) Case 1 Surface area of front door 12800 (cm ² ) Surface area of top cover 15000 (cm ² ) Surface area of rear cover 14000 (cm ² ) Total 41800 (cm ² ) Image information of front door seal Surface area of part 100 (cm ² ) Surface area of image information part of ceiling cover 120 (cm ² ) Surface area of image information part of rear cover 200 (cm ² ) Total 420 (cm ² ) R = 350 (cm ² ) / 41800 (cm ² ) = 0.083732 0.01> 0.083732 (2) Case 2 Surface area of front door 12800 (cm ² ) Surface area of top cover 15000 (cm ² ) Surface area of rear cover 14000 (cm ²⁾ ) total 41800 (cm ²⁾ front door - the surface area 0 (cm ² of the image information portion of the seal) top cover of the seal of the image information portion of the surface area 120 (cm ²⁾ of the rear cover Sea Image information surface area of the portion 300 (cm ²⁾ Total ^{420 (cm 2) R = 350} (cm 2) / 41800 (cm 2) = 0.083732 0.01> 0.083732

(3) Case 3 Surface area of front door 12800 (cm ² ) Surface area of top cover 15000 (cm ² ) Surface area of rear cover 14000 (cm ² ) Total 41800 (cm ² ) Image information of front door seal Surface area of part 0 (cm ² ) Surface area of image information part of ceiling cover 0 (cm ² ) Surface area of image information part of rear cover 420 (cm ² ) Total 420 (cm ² ) R = 350 (cm ² ) / 4800 (cm ² ) = 0.083732 0.01> 0.083732 According to the present invention, the case 3 is conventionally a single part of the rear cover, and even if it is regenerated, the regeneration condition is impaired, but If it is a set as a part, it can be absorbed by the margin of the front door and the top cover. Therefore, the ratio of the surface area of the image information portion of the seal-shaped member in which the image information is written to the total surface area of the assembled component is 1
By adopting the present configuration in which the content is less than or equal to%, it is possible to prevent the problem that the characteristics of the regenerated molded article are significantly deteriorated, and it is possible to reduce the regeneration cost. Moreover, there is an effect that it is possible to prevent the appearance of the regenerated molded product from being deteriorated.

(C) Third Invention (Claim 3) In the third invention, the ratio of the weight of the seal-shaped member in which the image information is written to the image information portion to the weight of the assembled component is defined by the third aspect. It is characterized in that it has a configuration that satisfies the expression of. The present invention will be described based on FIGS. 1 to 4 and Table 1. For example, Case 4 to Case 6 described later will be described. (1) Case 4 A = 500 (g): total weight of assembled parts (including sealing member) B1 = 5 (g): weight of sheet-shaped member (1) H1 = 100 (cm ² ): sheet-shaped member Surface area (1) G1 = 12800 (cm ² ): Surface area of parts (1) J1 = 20 (cm ² ): Surface area of image information (1) B2 = 4 (g): Weight of sheet-like member (2) H2 = 120 (cm ² ): Surface area of sheet-like member (2) G2 = 15000 (cm ² ): Surface area of parts (2) J2 = 20 (cm ² ): Surface area of image information (2) B3 = 3 (g) : weight of the sheet-like member (3) H3 = 200 (cm 2): surface area of the sheet-like member (3) G3 = 14000 (cm 2): surface area of the part (3) J3 = 20 (cm 2): the image information Surface area (3) ... Bn: Weight of sheet-like member (n) Hn: Surface of sheet-like member (N) Gn: Surface area of parts (n) Jn: Surface area of image information (n) 0.01A ≧ (J1) * (B1) / (H1) + (J2) * (B2) / (H2) + (J3 ) * (B3) / (H3) + ・ ・ ・ ・ ・ ・ + (Jn) * (Bn) / (Hn) 0.01A ≧ 20 * 5/100 + 20 * 4/120 + 20 * 3/200 5 ≧ 1 + 0.6667 + 0 .3 = 1.96667

(2) Case 5 A = 500 (g): Total weight of assembled parts (including seal member) B1 = 0 (g): Weight of sheet-like member (1) H1 = 0 (cm ² ): Surface area of sheet-like member (1) G1 = 12800 (cm ² ): Surface area of parts (1) J1 = 0 (cm ² ): Surface area of image information (1) B2 = 4 (g): Weight of sheet-like member ( 2) H2 = 120 (cm ² ): Surface area of sheet-like member (2) G2 = 15000 (cm ² ): Surface area of parts (2) J2 = 20 (cm ² ): Surface area of image information (2) B3 = 10 (g): weight of the sheet-like member (3) H3 = 200 (cm 2): surface area of the sheet-like member (3) G3 = 14000 (cm 2): surface area of the part (3) J3 = 20 (cm 2): Surface area of image information (3) Bn: Weight of sheet-like member (n) Hn: Sheet-like part Surface area (n) Gn: surface area of parts (n) Jn: surface area of image information (n) 0.01A ≧ (J1) * (B1) / (H1) + (J2) * (B2) / (H2) + (J3) * (B3) / (H3) + ... + (Jn) * (Bn) / (Hn) 0.01A ≧ 0 + 20 * 4/120 + 20 * 10/200 5 ≧ 0 + 0.6667 + 1 = 1 .6667

(3) Case 6 A = 500 (g): Total weight of assembled parts (including seal member) B1 = 15 (g): Weight of sheet-like member (1) H1 = 100 (cm ² ): Surface area of sheet-like member (1) G1 = 12800 (cm ² ): Surface area of parts (1) J1 = 20 (cm ² ): Surface area of image information (1) B2 = 4 (g): Weight of sheet-like member ( 2) H2 = 120 (cm ² ): Surface area of sheet-like member (2) G2 = 15000 (cm ² ): Surface area of parts (2) J2 = 20 (cm ² ): Surface area of image information (2) B3 = 3 (g): weight of the sheet-like member (3) H3 = 200 (cm 2): surface area of the sheet-like member (3) G3 = 14000 (cm 2): surface area of the part (3) J3 = 20 (cm 2): Surface area of image information (3) ··· Bn: Weight of sheet-like member (n) Hn: See Surface area (n) Gn: Surface area (n) of parts Jn: Surface area (n) of image information 0.01A ≧ (J1) * (B1) / (H1) + (J2) * (B2) / (H2 ) + (J3) * (B3) / (H3) + ... + (Jn) * (Bn) / (Hn) 0.01A ≧ 20 * 15/100 + 20 * 4/120 + 20 * 10/2005 The value is ≧ 3 + 0.6667 + 1 = 4.6667, which is an example satisfying the value of claim 3.

Next, the (a = 0.01) critical significance of the equation will be described based on Table 2.

[0039]

[Table 2]

Here, Table 1 shows the performance when the parts and the sheet-shaped members are crushed as they are and heat-welded. The horizontal axis is the value of a. The horizontal axis represents the ink generation state, the external color of the component, the warp of the molded product, and the strength of the molded product. Ink generation status A: No ink appears on the surface of the recycled molded product. ○: Ink is slightly visible on the surface of the remolded product, but there is no problem. Δ: A state in which a little dot-like ink appears on the surface of the regenerated molded product. ×: A lot of ink appears in dots on the surface of the remolded product. External color of parts ◎: There is no color variation on the surface of recycled molded products. ○: A slight variation is seen on the surface of the remolded product, but there is no problem. Δ: A state in which some variation appears on the surface of the regenerated molded product. ×: A lot of variation appears on the surface of the remolded product. Molded product warp ◎: A condition where the molded product does not warp on the surface of the recycled molded product. ○: A slight warp is seen on the surface of the recycled molded product, but there is no problem. Δ: A state where a slight amount of warp appears on the surface of the recycled molded product. ×: A lot of warp appears on the surface of the recycled molded product. Strength of molded products ◎ ... The strength of recycled molded products is equivalent to that of regular products. ◯: The strength of the recycled molded product is slightly different from that of the normal product, but there is no problem. Δ: The strength of the regenerated molded product is slightly inferior to that of the normal product. X: The strength of the regenerated molded product is considerably inferior to that of the normal product. From the above results, when a is 0.01, it is a very good condition that clears various conditions. Further, the present invention can be widely applied to parts of electronic devices other than copying machines.

As described above, according to the image forming apparatus of the present invention, the ratio of the surface area of the image information of the seal-like member to the surface area of the part is determined, so that it depends on the size of the part. Since the surface area of image information is limited, a large surface area of image information can be supplied to a large component. Moreover, by doing so, even if the sheet-shaped member is attached to the part and recycled, it is possible to prevent the problem that the characteristics of the recycled molded product are significantly deteriorated, reduce the recycling cost, and This is effective in preventing the deterioration of the appearance of the molded product. Furthermore, even if one resin component with the seal-like member is not filled to a certain proportion, if a certain proportion is cleared as a whole (assembled parts), it is already one component. If there is a margin in the above-mentioned ratio, it is permissible that other components exceed the above-mentioned ratio. In other words, a seal-like member with a large image information part can be used for parts that exceed the above ratio, so an operation sticker that is easy to handle for the user (for example, a sticker with a large image information part) should be attached. You can Further, it also has an effect that it becomes possible to comply with the PL law.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire image forming apparatus according to the present invention.

FIG. 2 is a sectional view showing the entire image forming apparatus of the present invention.

3 is a front view of a first decal attached to a front door of the copying machine shown in FIG.

FIG. 4 is a front view of a second decal attached to the front door of the copying machine shown in FIG.

[Explanation of symbols]

72 Operation display section 100 image forming apparatus 301 Body exterior cover 302 front door 304 First Decal 305 Second Decal 310 Heaven cover 311 Rear cover

Claims (3)

[Claims] 1. A component of an electronic device to which at least one sheet-shaped member on which image information is written is attached, the component and the sheet-shaped member being made of a thermoplastic resin compatible with each other. The surface area of all image information written on the sheet-shaped member is 1% of the surface area of the part.
Parts of electronic equipment characterized by being set as follows. 2. A plurality of parts, which are made of a thermoplastic resin, and at least one of the parts is pasted with at least one sheet-shaped member on which image information is written. In an assembly part having a part including at least one of the above-described parts, the ratio of the surface area of the image information part of the seal-shaped member in which the image information is written to the total surface area of the assembly part is 1% or less. Assembled parts characterized by being 3. A plurality of parts, which are made of a thermoplastic resin, and at least one of the parts has at least one sheet-shaped member on which image information is recorded. In an assembled part having a part including at least one pasted part, the condition of the seal member represented by the following conditional expression is shown: aA ≧ (J1) * (B1) / (H1) + ( J2) * (B
2) / (H2) + (J3) * (B3) / (H3) + ...
・ ・ ・ + (Jn) * (Bn) / (Hn) a = 0.01 A: Total weight of assembly parts (including sealing member) B1: Weight of sheet-like member (first) H1: Sheet-like member Surface area (first) G1: surface area of parts (first) J1: surface area of image information (first) B2: weight of sheet-shaped member (second) H2: surface area of sheet-shaped member (second) G2: parts Surface area (second) J2: surface area of image information (second) B3: weight of sheet member (third) H3: surface area of sheet member (third) G3: surface area of parts (third) J3: image Information surface area (third) Bn: Weight of sheet member (nth) Hn: Surface area of sheet member (nth) Gn: Surface area of parts (nth) Jn: Surface area of image information (nth) ) Assembly parts that meet.