JP2008229964A - Synthetic resin molding, its manufacturing method and electronic instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the quality of a design surface without a coating process. <P>SOLUTION: A resin molding has a first molded portion PR formed of a first resin material and a second molded portion PH formed by covering the first molded portion PR with a second transparent or translucent resin material in an integrated manner. A pattern Pa having a predetermined regularity in the boundary surface with the second molded portion PH is formed in the first molded portion PR. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a synthetic resin molded article, a manufacturing method thereof, and an electronic device.

2. Description of the Related Art Conventionally, in office equipment (electronic equipment) such as a printer, a housing such as an outer case is often molded from a synthetic resin such as plastic. Since this type of housing is a so-called external part that can be seen by the human eye, after the plastic molding is completed, the design surface or the counter-design surface (in the case of a transparent resin) is coated (see, for example, Patent Document 1) to improve the appearance. It is improving.
JP 2005-170981 A

However, the following problems exist in the conventional technology as described above.
An increase in the number of painting steps tends to increase the cost of painting, leading to an increase in cost and a problem that yield decreases due to the influence of dust, fluff and the like.
In recent years, products that do not have a painting process are increasing, but there is a problem that the quality of the design surface is low and the appearance is poor.
Furthermore, since an organic solvent is used in the painting process, there is a possibility of adversely affecting the global environment.

  The present invention has been made in consideration of the above points, and a synthetic resin molded product that improves the quality of a design surface without providing a painting process, a method for manufacturing the same, and an electronic device including the synthetic resin molded product The purpose is to provide equipment.

In order to achieve the above object, the present invention employs the following configuration.
The synthetic resin molded product according to the present invention includes a first molded part molded with a first synthetic resin material and a first molded part integrally formed by covering the first molded part with a transparent or translucent second synthetic resin material. And a pattern having a predetermined regularity is formed on the interface with the second molded part.
Therefore, in the synthetic resin molded product of the present invention, the light transmitted through the second molding part is irregularly reflected by the pattern of the first molding part, so that the light refraction changes, and the iridescent color often seen in CDs (compact discs) and the like. Shining shine is generated. Therefore, in this invention, a color changes with the angle which looks at a 1st shaping | molding part (pattern) via a 2nd shaping | molding part, and the quality of a design surface can be improved. Moreover, this pattern is protected by the 2nd shaping | molding part which covers a 1st shaping | molding part, and a deep design surface can be obtained by covering with transparent or translucent resin.
As described above, in the present invention, since the quality of the design surface is improved without providing a painting process, it is possible to avoid the cost increase, the yield deterioration, and the adverse influence on the global environment.

As said pattern, the structure used as the uneven | corrugated pattern alternately formed by the predetermined pitch can be employ | adopted suitably.
Thereby, in this invention, the light reflected by the adjacent convex part or a convex part and a recessed part interferes, and it can produce glitter easily.

On the other hand, the synthetic resin molded product of the present invention is integrally molded by covering the first molded part molded with the first synthetic resin material and the first molded part with the transparent or translucent second synthetic resin material. The first synthetic resin material includes a reflective material that reflects light incident through the second molded portion.
Therefore, in the synthetic resin molded product of the present invention, the light transmitted through the second molded portion is irregularly reflected by the reflective material of the first molded portion, so that the light refraction is changed and glitter is generated. Therefore, in this invention, a color changes by the light reflected by the angle which looks at a 1st shaping | molding part (pattern) through a 2nd shaping | molding part, and the quality of a design surface can be improved. Moreover, the surface of the 1st shaping | molding part is protected by the 2nd shaping | molding part which covers a 1st shaping | molding part, and a deep design surface can be obtained by covering with transparent or translucent resin.
As described above, in the present invention, since the quality of the design surface is improved without providing a painting process, it is possible to avoid the cost increase, the yield deterioration, and the adverse influence on the global environment.

As the reflection material, a configuration in which at least one of a metal material, a mineral, and a gas can be suitably employed.
Thereby, in this invention, it becomes possible to reflect or diffusely reflect the light which injected into the 1st shaping | molding part easily.

Moreover, as said 1st shaping | molding part, the structure whose arithmetic surface roughness in an interface with the said 2nd shaping | molding part is 10 micrometers or less can be employ | adopted suitably.
When the surface roughness of the first molded part exceeds 10 μm, there is little interference of reflected light, and it can be seen only as concavo-convex by human eyes, and improvement in quality cannot be achieved, but the surface roughness should be 10 μm or less. As a result, it is possible to improve the quality by producing glitter.

In addition, as the first synthetic resin material and the second synthetic resin material, a configuration in which the same material or the base resin is the same copolymer resin material can be suitably employed.
Thereby, in this invention, since the adhesiveness of a 1st shaping | molding part and a 2nd shaping | molding part improves, a high quality synthetic resin molded product which cannot produce peeling etc. easily can be obtained.

And the electronic device of this invention is equipped with the synthetic resin molded product as described above, It is characterized by the above-mentioned.
Therefore, in the electronic device of the present invention, it is possible to obtain a high-quality electronic device in which the quality of the design surface is improved and the cost increase, the yield deterioration, and the adverse effect on the global environment are avoided.

On the other hand, in the method for producing a synthetic resin molded article of the present invention, the first step of forming the first molded part with the first synthetic resin material, and the first molded part with the transparent or translucent second synthetic resin material are covered. And forming a pattern having a predetermined regularity at the interface between the first molded part and the second molded part. It is characterized by.
Therefore, in the method for producing a synthetic resin molded product according to the present invention, the light transmitted through the second molded part is irregularly reflected by the pattern of the first molded part, so that the light refraction changes, and is often seen on a CD (compact disc) or the like. The rainbow-colored glitter is generated. Therefore, in this invention, a color changes with the angle which looks at a 1st shaping | molding part (pattern) via a 2nd shaping | molding part, and the quality of a design surface can be improved. Moreover, this pattern is protected by the 2nd shaping | molding part which covers a 1st shaping | molding part, and a deep design surface can be obtained by covering with transparent or translucent resin.
As described above, in the present invention, since the quality of the design surface is improved without providing a painting process, it is possible to avoid the cost increase, the yield deterioration, and the adverse influence on the global environment.

The pattern is a concavo-convex pattern formed alternately at a predetermined pitch. With this, in the present invention, light reflected by adjacent convex portions or convex portions and concave portions interfere with each other, and easily generate glitter. be able to.

Furthermore, in the method for producing a synthetic resin molded article of the present invention, a first step of molding the first molded part with the first synthetic resin material, and the first molded part is covered with a transparent or translucent second synthetic resin material. And a second step of integrally molding the second molded portion, wherein the first synthetic resin material includes a reflective material that reflects light incident through the second molded portion. It is.
Therefore, in the method for producing a synthetic resin molded product according to the present invention, the light transmitted through the second molded part is diffusely reflected by the reflective material of the first molded part, thereby producing glitter. Therefore, in this invention, a color changes by the light reflected by the angle which looks at a 1st shaping | molding part (pattern) through a 2nd shaping | molding part, and the quality of a design surface can be improved. Moreover, the surface of the 1st shaping | molding part is protected by the 2nd shaping | molding part which covers a 1st shaping | molding part, and a deep design surface can be obtained by covering with transparent or translucent resin.
As described above, in the present invention, since the quality of the design surface is improved without providing a painting process, it is possible to avoid the cost increase, the yield deterioration, and the adverse influence on the global environment.

As the reflection material, a configuration in which at least one of a metal material, a mineral, and a gas can be suitably employed.
Thereby, in this invention, it becomes possible to reflect or diffusely reflect the light which injected into the 1st shaping | molding part easily.

As said 1st synthetic resin material and said 2nd synthetic resin material, the structure which the same material or base resin is the same copolymer resin material can be employ | adopted suitably.
Thereby, in this invention, since the adhesiveness of a 1st shaping | molding part and a 2nd shaping | molding part improves, a high quality synthetic resin molded product which cannot produce peeling etc. easily can be obtained.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a synthetic resin molded product, a manufacturing method thereof, and an electronic device according to the present invention will be described below with reference to FIGS.
In each drawing used for the following description, the scale of each member is appropriately changed to make each member a recognizable size.

(First embodiment)
Here, a schematic configuration of an ink jet recording apparatus (liquid ejecting apparatus, liquid droplet ejecting apparatus) 1 as an electronic apparatus according to the first embodiment provided with the synthetic resin molded product according to the present invention will be described first.
FIG. 1 is a perspective view showing an ink jet recording apparatus 1, FIG. 2 is a perspective view of an apparatus main body 3 with a scanner unit removed from the ink jet recording apparatus 1, and FIG. FIG. 4 is a perspective view of the apparatus main body 3 with the scanner unit removed from different angles, and FIG. 4 is a side view of the main part of the ink jet recording apparatus 1.

  As shown in FIG. 1, the ink jet recording apparatus 1 is a type having a scanner function in addition to a printer function, and includes an apparatus main body 3, a scanner unit 5 positioned on the upper surface side of the apparatus main body 3, and a rear side of the scanner unit 5. And a feeding unit 7 provided in the vehicle. The apparatus main body 3 mainly has a function of an ink jet printer, that is, a recording head 38 as a “liquid ejecting head” for recording on a recording paper P as a “material to be ejected” fed from the feeding unit 7, and a recording head 38. And a carriage 37 that can reciprocate in the main scanning direction X. A member denoted by reference numeral 9 indicates a discharge receiving portion 9 for the recording paper P. The discharge receiving portion 9 receives the recording paper P after recording in a state of being rotated approximately 90 ° toward the front side when the printer function is used. To use. An operation panel 11 is provided on the left side of the upper surface of the apparatus main body 3, and a scanning function using the scanner unit 5, a recording function in the apparatus main body 3, a function for recording a scanned image, and the like can be operated on the operation panel 11. It has become.

  The scanner unit 5 includes a lid 15 that can be opened and closed by pivoting upward about a pivot shaft 13, and a glass on which a printed material or the like to be subjected to scanning is placed below the lid 15. A mounting surface (not shown) is formed. Further, a scanning device (not shown) is provided below the glass placement surface. The scanner unit 5 as a whole pivots upward about the pivot shaft 17 as a whole, so that the upper part of the apparatus main body 3 is opened and maintenance of the carriage 37 and the like can be performed.

  As shown in FIG. 1, the feeding unit 7 is closed by a lid 19 when not in use, and the feeding unit 7 is opened by rotating the lid 19 rearward as shown in FIG. Further, by fixing at a fixed angular position, it functions as the recording paper support 23. The recording paper support 23 is provided with an edge guide 25 that can slide in accordance with the width dimension of the recording paper P. When the lid 19 is in an open state, a feeding port 27 is formed in the feeding unit 7, and the recording paper P stacked on the recording paper support 23 is fed one by one by a feeding mechanism (not shown). From the recording head 38 to the recording execution area.

  While the recording paper P fed from the feeding unit 7 is sandwiched between the lower transport driving roller 21 and the upper transport driven roller 22, while receiving a precise transport operation in the sub-scanning direction Y, The recording paper P is transported toward the recording head 38 located downstream in the transport direction (sub-scanning direction Y). The recording head 38 is supported by a carriage 37, and the carriage 37 is disposed so as to be able to reciprocate in a main scanning direction X orthogonal to the conveyance direction (sub-scanning direction Y) of the recording paper P. An ink cartridge (not shown) filled with ink ejected from the recording head 38 is mounted on the carriage 37.

  A platen 24 formed integrally with the pre-guide member 26 is provided at a position facing the recording head 38. When the recording head 38 performs recording on the recording paper P, the platen 24 removes the recording paper P. Responsible for supporting from below. The distance PG between the recording head 38 and the upper surface of the platen 24 can be adjusted as appropriate according to the thickness of the recording paper P. In a state where the distance PG is properly adjusted, the recording paper P is recorded on the recording paper P recorded by the recording head 38 so that high-quality recording is performed while passing smoothly over the platen 24. Is pulled out by the rotational drive of the discharge drive roller 91 and discharged while being sandwiched between the discharge drive roller 91 and the discharge jagged roller 92 provided on the discharge frame 93. A pressing roller 28 that restricts the lifting of the trailing edge of the recording paper P is provided between the recording head 38 and the discharge jagged roller 92 on the leading end side (upstream in the transport direction) of the discharge frame 93.

  As shown in FIG. 3, a carriage support portion (not shown) is formed on the back side of the carriage 37, and the carriage support portion is supported so that it can slide smoothly with respect to the slide shaft 31. . The apparatus main body 3 is provided with a carriage driving motor 32 as a driving force source for moving the carriage 37 to an arbitrary position within the reciprocating movable range. Further, as driving force transmitting means for transmitting the driving force of the carriage driving motor 32 to the carriage 37, a driving pulley (gear) 331 provided on the output shaft of the carriage driving motor 32 and a driven pulley (gear) provided on the opposite side. ) A toothed endless belt 33 is wound around 332. As shown in FIG. 3, the toothed endless belt 33 is connected to the carriage 37 at the carriage support portion, and is toothed as the carriage drive motor 32 rotates forward (CW rotation) or reverse (CCW rotation). As the endless belt 33 revolves clockwise or counterclockwise, the carriage 37 reciprocates in the main scanning direction X.

  As shown in FIG. 3, a home position HP serving as a base point of the movement control position of the carriage 37 is set at a predetermined position near one end side (right side) of the reciprocating movable range of the carriage 37. In the vicinity of the home position HP, there are a carriage lock member 39 and a recording head 38 that can arbitrarily lock the movement of the carriage 37 to the other end side (left side) in a state where the carriage 37 is in a standby state near the home position HP. A capping device 4 (see FIG. 2) for sealing the head surface is provided. The carriage lock member 39 is pivotally supported in a state having a frictional resistance with respect to a rotation shaft 41 that is rotationally driven via a train wheel of a drive system that feeds the recording paper P. Also, the other end side (left side) of the reciprocating movable range of the carriage 37 has an abutting portion 2 that defines the movement limit position of the carriage 37 on the other end side (left side) of the reciprocating movable range when the carriage 37 abuts. It is formed by a part of the frame of the apparatus main body 3.

In the present embodiment, for example, the apparatus main body 3 as an outer case (casing), the cover bodies 15 and 19, the discharge receiving portion 9, the recording paper support 23, the edge guide 25, and the like are exposed to the outside. These synthetic resin molded products are composed of a reflective layer that reflects (diffusely reflects) incident light and a protective layer that is integrally molded so as to cover the reflective layer.
Details will be described below.

FIG. 5 representatively shows a partial cross-sectional view of these synthetic resin molded products.
In this synthetic resin molded product PL, the reflective layer (first molded portion) PR and the protective layer (second molded portion) PH covering the surface of the reflective layer PR on the design surface exposed to the outside are formed by two-color molding. It is constructed integrally. At the interface between the reflective layer PR and the protective layer PH, concavo-convex patterns (patterns) Pa formed alternately at a predetermined pitch are formed. The concavo-convex pattern Pa has a configuration in which, for example, a plurality of convex portions 60 having a height H and a width W of about 0.5 to 5 μm are arranged with a regularity of a pitch Pt of about 0.01 to 0.5 mm. The material of the reflective layer PR is not particularly limited, but a plastic material such as an ABS material, a PS material, a PC material, or a PP material is used as the first synthetic resin material having excellent moldability. In the present embodiment, the surface of the reflective layer PR including the concavo-convex pattern Pa has an arithmetic surface roughness of 10 μm or less.

  The protective layer PH is formed so as to cover the reflective layer PR (the uneven pattern Pa) with a transparent or translucent second synthetic resin material such as a PC material, a PS material, an ABS material, or an acrylic material. In the present embodiment, the reflective layer PR and the protective layer PH are made of the same material or a copolymer resin material having the same base resin. In this case, a colorant may be added to the transparent or translucent resin in order to improve the light reflectivity in the uneven pattern Pa of the reflective layer PR.

  When molding the above synthetic resin molded product PL, first, after forming the reflective layer PR using the mold having the cavity corresponding to the reflective layer PR and the first synthetic resin material in the first step, In the process, for example, only the fixed mold is replaced (changed) with a mold corresponding to the protective layer PH, and the second synthetic resin material is used with the movable mold in which the reflective layer PR is not discharged (not projected). By performing color molding, a synthetic resin molded product PL in which the reflective layer PR and the protective layer PH are integrally molded is manufactured.

In the synthetic resin molded product PL of the present embodiment, the light that has passed through the protective layer PH is irregularly reflected by the concavo-convex pattern Pa of the reflective layer PR, so that the light reflected by the adjacent convex portions or the convex portions and the concave portions interferes. Therefore, the refraction of light is changed, and the brilliant brilliancy that is often found on CDs (compact discs) can be easily generated. Therefore, in the present embodiment, the hue slightly changes depending on the angle at which the concave / convex pattern Pa of the reflective layer PR is viewed through the protective layer PH, and the quality as a design surface can be improved. Moreover, since this uneven | corrugated pattern Pa is protected by the protective layer PH, a deep design surface can be obtained by covering with a transparent or translucent resin without losing the glitter due to scratches or the like. In particular, in this embodiment, since the surface roughness at the interface between the reflective layer PR and the protective layer PH is 10 μm or less, there is little interference of reflected light as in the case where the surface roughness exceeds 10 μm. It is possible to improve the quality by avoiding a situation in which the eye can see only a concavo-convex shape, and effectively producing a glitter.
Thus, in this embodiment, since the quality of the design surface is improved without providing a painting process, it is possible to avoid an increase in cost, a decrease in yield, and an adverse effect on the global environment.

(Second Embodiment)
Next, a second embodiment of the synthetic resin molded product will be described with reference to FIG.
In the first embodiment, the reflective layer PR has a concavo-convex pattern Pa for irregularly reflecting light. However, in the present embodiment, the material constituting the reflective layer PR includes a reflective material that reflects light. .
In this figure, the same components as those of the first embodiment shown in FIGS. 1 to 5 are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 6, the reflective layer PR in the present embodiment is kneaded by adding a reflective material R that reflects incident light to the same transparent or translucent synthetic resin material as the protective layer PH. ing. As the reflecting material R, spherical powder, flake powder, acicular powder, different refractive index powder, or the like made of metal, ore (mineral), glass, resin, or the like can be selected.

  Specifically, a metallic metallic luster pigment in which the surface of natural mica is coated (coated) with 45 to 58% by weight of titanium oxide, the optical thickness of the coating layer is 245 to 415 nm, and the particle size is 5 to 60 μm. When it is added and kneaded as the reflector R, it is possible to impart a glittering gold color. In addition, when an aluminum foil having an average particle diameter of 0.01 to 50 μm is added and kneaded, it can impart a glittering silvery glitter.

In the synthetic resin molded product PL described above, the light that has passed through the protective layer PH and entered the reflective layer PR is diffusely reflected by the reflective material R, resulting in glitter. Therefore, in the present invention, the color is changed by changing the reflected light depending on the angle at which the reflective layer PR is viewed through the protective layer PH, and the quality of the design surface can be improved.
Therefore, in this embodiment, in addition to obtaining the same operation and effect as in the first embodiment, the base resin of the protective layer PH and the reflective layer PR is the same, so the type of synthetic resin material to be used This can contribute to further improvement of productivity and reduction of production cost.

(Third embodiment)
Next, a third embodiment of the synthetic resin molded product will be described with reference to FIG.
In the said 2nd Embodiment, it was set as the structure which adds and knead | mixes a metal and a mineral as the reflecting material R, but in this embodiment, as shown in FIG. 7, the bubble (gas) K scattered in the reflection layer PR is shown. Reflective material. In this embodiment, bubbles are formed by foam molding in which a foaming agent is contained in the base resin, or by gas injection molding in which air is injected in a state where the synthetic resin material to be the base resin is melted in the mold. A reflective layer PR having K can be formed.

  Also in the present embodiment, the light that has passed through the protective layer PH and entered the reflective layer PR is diffusely reflected by the bubbles K that are the reflective material, thereby producing glitter. Therefore, also in the present invention, the color can be changed by changing the reflected light depending on the angle at which the reflective layer PR is viewed through the protective layer PH, and the quality of the design surface can be improved. Similar effects can be obtained.

(Fourth embodiment)
Next, another embodiment of the electronic device will be described as a fourth embodiment with reference to FIGS.
In the above embodiment, an ink jet recording apparatus having a scanner function in addition to a printer function has been described as an example. However, the present embodiment is suitable for recording on recording paper having a relatively small postcard, L size, or the like. An inkjet printer (hereinafter abbreviated as “printer”) as a recording apparatus configured in a small size in consideration of ease of transport will be described. Here, FIG. 8 is an external perspective view of the printer 100, and FIG. 9 is a side sectional view of the paper conveyance path of the printer 100.

  The printer 100 includes a feeding device 101 that supports a plurality of stacked recording sheets in an inclined posture at the rear of the printer main body, and stacks the recording sheets on which recording has been performed at the front of the printer main body. The stacker 150 is provided so as to be switchable between a stowed state standing substantially vertically as shown in FIG. 8 and a use state (not shown) in which recording sheets can be stacked by opening the front side of the printer. .

  In the center of the upper surface of the printer 100, an operation unit 131 configured by a power button, a print setting button, and the like, and a display unit 130 that displays print setting contents, current operation status, and the like are arranged. Is provided with an openable / closable cover 161 that covers a card slot (not shown) in which a semiconductor memory medium storing image data and the like can be mounted. That is, the printer 100 not only receives print data by connecting to an external host computer, but also reads image data directly from the semiconductor memory storing the image data, generates print data, and executes printing by itself. This is a so-called stand-alone printer that can be configured.

  The housing constituting the external appearance of the printer 100 is constituted by a plurality of members. In FIG. 8, an upper panel 151, a housing left 153, a housing right 155, and a side panel right 159 are shown. . The housing left 153 and the housing right 155 are each provided with a handle 137 and arm handles 141 extending in an L shape from both ends of the handle 137 toward the printer main body (hereinafter referred to as “ 135 (abbreviated as “handle”) is attached so as to be rotatable when the printer main body is viewed from the side, and by holding the handle 135 when carrying the printer 100, the printer 100 can be easily transported. It is like that.

  The housing structure of the printer 100 is configured such that the apparatus main body divided vertically is capped with the housing left 153 and the housing right 155, so that even when the printer 100 is carried by the handle 155, the apparatus main body is moved up and down. There is no separation, and the safety during transportation (that is, the mechanical strength of the housing) is improved.

  Next, the internal configuration of the printer 100 will be described. The printer 100 is provided with a carriage 110 that is pivotally supported by a carriage guide shaft 112 as a main component of recording means for recording on the recording paper P so as to reciprocate in the main scanning direction (front and back direction in FIG. 9). Yes. The carriage 110 is equipped with a recording head 113 that performs recording by ejecting ink onto the recording paper P.

  A platen 128 that defines the gap between the head surface of the recording head 113 and the recording paper P is provided below the recording head 113 so as to face the recording head 113. Then, the recording paper P is transported between the carriage 110 and the platen 128 by a predetermined transport amount in the sub scanning direction (left and right direction in FIG. 9) orthogonal to the main scanning direction, and the recording head 113 is moved in the main scanning direction. Recording is performed on the recording paper P by alternately repeating the operation of ejecting ink from the recording head 113 onto the recording paper P during the reciprocation.

Next, the configuration of the printer 100 will be described in more detail according to the conveyance path of the recording paper P. First, a hopper 116 as a support member for stacking the recording paper P on the most upstream side in the transport direction is provided on the frame 105 constituting the base of the feeding device 101 so as to be swingable. The recording paper P on the hopper 116 is raised at a predetermined timing as the rotating shaft 117 of the feeding roller 114 rotates, and is pushed up toward the feeding roller 114.
The feeding device 101 including the feeding roller 114, the hopper 116, and the like is separated in the vicinity of the feeding roller 114 in order from the recording paper P positioned at the top as the feeding roller 114 rotates. The sheets are picked up one by one while being separated from the next and subsequent recording sheets P by the pad 107, and are fed downstream in the transport direction.

  Here, as shown in the relationship between the phantom line and the solid line in FIG. 9, the feeding device 101 includes a hopper 116 and a device (unit) itself based on the frame 105 that is rotatably provided and is indicated by a solid line. In the use state, it becomes an inclined posture that protrudes backward. On the other hand, in the storage state indicated by the phantom line, the opening 165 for inserting the recording paper P is closed, and entry of dust or the like can be prevented. In the storage state, the feeding device 101 does not protrude rearward, and the printer 100 can be made compact and the appearance can be improved.

  A recording medium detection means (not shown) for detecting the passage of the recording paper P is provided downstream of the feeding roller 114, and downstream of the feeding roller 114, a conveyance driving roller 119a and a conveyance driven roller 119b are provided. The conveyance roller 119 comprised by these is provided. Of these, the driven roller 119b for conveyance is pivotally supported downstream of the roller holder 118 for the driven roller for conveyance, and the roller holder 118 is provided so as to be rotatable about a rotation shaft (not shown) and is a torsion (not shown). The coiled spring is urged to rotate so that the conveyance driven roller 119b is always in a nip state in pressure contact with the conveyance drive roller 119a.

  The recording sheet P conveyed in a state of being pinched by the conveying roller 119 is guided to a recording position 126 below the recording head 113, and desired recording is performed on the recording sheet P by the operation of the carriage 110 and the conveying roller 119 described above. Is executed. The gap between the recording head 113 and the platen 128 provided opposite to the recording head 113 is an extremely important element in executing high-precision recording, and corresponds to the change in the thickness of the recording paper P. It is adjusted accordingly.

  A discharge roller 120 constituted by a discharge drive roller 120a and a discharge toothed roller 120b is provided downstream of the recording head 113, and the recording paper P discharged by the discharge roller 120 is located further downstream. The discharge stacker 150 is discharged. The discharge toothed roller 120b is a toothed roller having a plurality of teeth on the outer periphery thereof, and is rotatably supported by a roller holder (not shown) for the discharge toothed roller. An auxiliary toothed roller 122 is provided upstream of the discharging toothed roller 120b, and the auxiliary toothed roller 122 prevents the recording paper P from being lifted from the platen 128, so that appropriate recording quality is maintained. ing.

In the printer 100, the cover 161, the upper panel 151, the housing left 153, the housing right 155, the side panel right 159, the handle 135, and the like have the same configuration as the synthetic resin molded product PL having the above-described design surface. can do.
Further, in the printer 100 described above, the rotation shaft 117 of the feeding roller 114, the conveying drive roller 119a and the conveying driven roller 119b, the discharging drive roller 120a, the discharging toothed roller 120b, the auxiliary toothed roller 122, etc. A gear (pinion) or the like for transmitting the rotational drive to can be configured similarly to the synthetic resin molded product PL described above. In this case, for example, when the exterior case has transparency and these internal functional parts are visible from the outside, it is possible to provide the skeleton-like printer 100. Further, in a scanner or the like, Scanning light and the like can also be visually recognized from the outside, and it is possible to provide not only the quality of the design surface but also an elegant electronic device.

  As described above, the preferred embodiments according to the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the examples. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

For example, the concavo-convex pattern Pa shown in the first embodiment is an example, and may be another pattern (such as a wave shape) as long as it has a predetermined regularity.
Moreover, in the said embodiment, although the 1st synthetic resin material and the 2nd synthetic resin material were demonstrated as the same material, it is not limited to this, For example, a base resin is the same copolymer resin material. Another material may be used. Also, the reflective material included in the reflective layer PR is not limited to any one of metal, ore (mineral), glass, resin, and gas, and may include a plurality.

  In the above-described embodiment, the synthetic resin molded product according to the present invention has been described as being disposed in a recording apparatus such as a printer. However, the present invention can be applied to various electronic devices. For example, LCD projectors, multimedia-compatible personal computers (PCs) and engineering workstations (EWS), pagers, word processors, televisions, viewfinder type or monitor direct view type video tape recorders, electronic notebooks, electronic desk calculators, car navigation systems The present invention can be applied to an electronic device such as a device, a POS terminal, a device including a touch panel, and a design surface such as a housing surface of an automobile console.

1 is a perspective view of an ink jet recording apparatus. FIG. 2 is a perspective view of an ink jet recording apparatus with a scanner unit removed. FIG. 2 is a perspective view of an ink jet recording apparatus with a scanner unit removed. It is a principal part side view of an inkjet recording device. It is a fragmentary sectional view of a synthetic resin molded product. It is a fragmentary sectional view of the synthetic resin molded product in a 2nd embodiment. It is a fragmentary sectional view of the synthetic resin molded product in a 3rd embodiment. It is an external appearance perspective view of the printer which concerns on another form. It is a sectional side view of the paper conveyance path of a printer.

Explanation of symbols

  K: Air bubbles (gas, reflective material), Pa: Uneven pattern (pattern), PH: Protective layer (second molded part), PL: Synthetic resin molded product, PR: Reflective layer (first molded part), R: Reflected 1. Inkjet recording apparatus (liquid ejecting apparatus, droplet ejecting apparatus)

Claims (12)

A first molded part molded of a first synthetic resin material;
A second molded part integrally formed by covering the first molded part with a transparent or translucent second synthetic resin material;
A synthetic resin molded product, wherein a pattern having a predetermined regularity is formed on the interface with the second molded part in the first molded part. In the synthetic resin molded product according to claim 1,
The synthetic resin molded product, wherein the pattern is an uneven pattern formed alternately at a predetermined pitch. A first molded part molded of a first synthetic resin material;
A second molded part integrally formed by covering the first molded part with a transparent or translucent second synthetic resin material;
Said 1st synthetic resin material contains the reflecting material which reflects the light which injected through the said 2nd shaping | molding part, The synthetic resin molded product characterized by the above-mentioned. In the synthetic resin molded product according to claim 3,
The synthetic resin molded product, wherein the reflective material is at least one of a metal material, a mineral, and a gas. In the synthetic resin molded product according to any one of claims 1 to 4,
The synthetic resin molded product, wherein the first molded part has an arithmetic surface roughness of 10 μm or less at an interface with the second molded part. In the synthetic resin molded product according to any one of claims 1 to 5,
The first synthetic resin material and the second synthetic resin material are the same material or a copolymer resin material having the same base resin.   An electronic apparatus comprising the synthetic resin molded product according to any one of claims 1 to 6. A first step of molding the first molding part with the first synthetic resin material;
A second step of integrally molding a second molded part that covers the first molded part with a transparent or translucent second synthetic resin material,
In the first step, a pattern having a predetermined regularity is formed at an interface between the first molding part and the second molding part. In the manufacturing method of the synthetic resin molded product of Claim 8,
The method for producing a synthetic resin molded product, wherein the pattern is a concavo-convex pattern formed alternately at a predetermined pitch. A first step of molding the first molding part with the first synthetic resin material;
A second step of integrally molding a second molded part that covers the first molded part with a transparent or translucent second synthetic resin material,
The method of manufacturing a synthetic resin molded product, wherein the first synthetic resin material includes a reflective material that reflects light incident through the second molded portion. In the manufacturing method of the synthetic resin molded product according to claim 10,
The method for producing a synthetic resin molded product, wherein the reflective material is at least one of a metal material, a mineral, and a gas. In the manufacturing method of the synthetic resin molded product according to any one of claims 8 to 11,
The method for producing a synthetic resin molded product, wherein the first synthetic resin material and the second synthetic resin material are the same material or a copolymer resin material having the same base resin.

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