Image forming apparatus

Abstract

An image forming apparatus includes a frame that holds an image forming section and has a substrate mounted thereon that serves a part of a function of the image forming section, and a plurality of conductive members disposed on one side surface of the substrate, the conductive members being disposed on the side surface of the frame. The width in the vertical direction of a space portion formed between a plurality of elongated portions extending in the horizontal direction from between frame portions extending in the vertical direction is greater than the width in the vertical direction of the elongated portions. At least a part of the substrates are disposed in a connected manner between frame portions extending in the vertical direction, and among the connected substrates, the uppermost substrate and the lowermost substrate in the vertical direction are disposed such that when the frame is divided into two regions by imagining a center line in the horizontal direction, the frame is divided into two regions by the center line. The two electrodes are located in different areas.

Description

Technical Field

[0001] The present invention relates to an image forming device. Background Art

[0002] For example, Japanese Patent Gazette No. 2005-31364 discloses a structure: a seat portion of an image forming device structure, which is composed of a frame base component that is respectively arranged in the front, back, left and right directions to form a rectangular frame, a mounting component that is arranged at the four corners of the rectangular frame and connects each frame base component in the front-back direction and the left-right direction, and a bottom plate component, and a plurality of skeleton components in a pipe shape are provided to form the image forming device structure, and is characterized in that an intermediate mounting component is provided on the frame base component that forms the long side of the rectangular frame. Summary of the invention

[0003] Here, consider the case where the substrate is mounted on one side of the frame of the image forming device. In this case, in the side of the frame on which the substrate is mounted, the area of ​​the frame is sometimes reduced by making the vertical width of the space formed between the plurality of longitudinal shapes extending horizontally between the vertical frames larger than the vertical width of the longitudinal shapes, thereby seeking to reduce costs. However, this structure may not ensure the necessary rigidity when the image forming device is operated.

[0004] An object of the present invention is to ensure the rigidity of an image forming device in a side surface of a frame on which a substrate is mounted, even when the vertical width of a space portion formed between a plurality of longitudinally shaped portions extending in a horizontal direction from frame portions extending in a vertical direction is greater than the vertical width of the longitudinally shaped portions.

[0005] According to a first aspect of the present invention, there is provided an image forming apparatus, wherein the apparatus comprises a frame, the frame holding an image forming unit, a substrate having a part of the function of the image forming unit being mounted thereon, wherein in a side surface on which the substrate is mounted, a width in the vertical direction of a space portion formed between a plurality of longitudinally shaped portions extending in the horizontal direction from a frame portion extending in the vertical direction is greater than a width in the vertical direction of the longitudinally shaped portions,

[0006] There are multiple substrates, and at least a part of the substrates are arranged in a connected form between frame parts extending along the vertical direction. The substrate located at the top and the substrate located at the bottom in the vertical direction of the connected substrates are arranged so that they are located in different areas when the frame is divided into two areas by a center line in the horizontal direction.

[0007] According to a second aspect of the present invention, in the image forming apparatus according to the first aspect, the plurality of substrates are connected to each other in the horizontal direction.

[0008] According to the third aspect of the present invention, in the image forming device based on the first or second aspect, the multiple substrates include: the substrate located at the top, namely the first substrate; the substrate located at the bottom, namely the second substrate; and a third substrate located between the first substrate and the second substrate in the vertical direction, and the outer shape of the first substrate or the third substrate is larger than the outer shape of the second substrate.

[0009] According to a fourth aspect of the present invention, in the image forming apparatus according to the third aspect, an outer shape of the first substrate is larger than an outer shape of the third substrate.

[0010] According to the fifth aspect of the present invention, in the image forming device based on any one of the first to fourth aspects, the substrate located at the top and the substrate located at the bottom are installed in a manner that they are connected to either one of the frame portion extending along the vertical direction and the longitudinal portion extending along the horizontal direction without being connected to the other.

[0011] According to a sixth aspect of the present invention, in the image forming apparatus according to the fifth aspect, the mode is connected to the frame portion extending in the vertical direction and is not connected to the longitudinally long portion extending in the horizontal direction.

[0012] According to the seventh aspect of the present invention, in the image forming device based on the first aspect, when the substrate located at the top, i.e., the first substrate, is installed on the one side through a first storage section, the substrate located at the bottom, i.e., the second substrate, is installed on the one side through a second storage section, and a third substrate located between the first substrate and the second substrate in the vertical direction is installed on the one side through a third storage section, any one of the first storage section, the second storage section and the third storage section includes a thin plate storage section having a plate thickness thinner than the frame.

[0013] According to an eighth aspect of the present invention, in the image forming apparatus according to the seventh aspect, the third storage section is the thin plate storage section.

[0014] According to a ninth aspect of the present invention, in the image forming apparatus according to the eighth aspect, the thin plate storage section includes the second storage section and the third storage section.

[0015] According to a tenth aspect of the present invention, in the image forming apparatus according to the first aspect, the frame has an area that accounts for less than 2 / 3 of the total area of ​​the side surface on which the substrate is mounted.

[0016] (Effect)

[0017] According to the first aspect, in a side surface of a frame on which a substrate is mounted, the rigidity of the image forming device can be ensured even when the vertical width of a space portion formed between a plurality of longitudinally shaped portions extending in a horizontal direction from frame portions extending in a vertical direction is greater than the vertical width of the longitudinally shaped portions.

[0018] According to the second aspect, the plurality of substrates are connected to each other in the horizontal direction, and the rigidity can be improved compared to a case where this structure is not provided.

[0019] According to the third aspect, the plurality of substrates include: a first substrate being located at the top; a second substrate being located at the bottom; and a third substrate being located between the first and second substrates in a vertical direction. The outer shape of the first substrate or the third substrate is larger than that of the second substrate, and compared with a case where this structure is not provided, the rigidity when substrates of different sizes are installed on a frame can be improved.

[0020] According to the fourth aspect, the outer shape of the first substrate is larger than the outer shape of the third substrate, and the rigidity can be further improved compared to a case where this structure is not provided.

[0021] According to the fifth aspect, the substrate located at the top and the substrate located at the bottom are installed in a manner connected to either the frame portion extending in the vertical direction or the longitudinal portion extending in the horizontal direction without being connected to the other, which can reduce manufacturing costs compared to a case where this structure is not provided.

[0022] According to the sixth aspect, the structure is connected to the frame portion extending in the vertical direction and is not connected to the long shape portion extending in the horizontal direction. This can improve rigidity compared to a case where this structure is not provided.

[0023] According to the seventh aspect, in a case where the uppermost substrate, i.e., the first substrate, is mounted on one side via a first storage portion, the lowermost substrate, i.e., the second substrate, is mounted on one side via a second storage portion, and a third substrate located between the first substrate and the second substrate in a vertical direction is mounted on one side via a third storage portion, any one of the first storage portion, the second storage portion, and the third storage portion includes a thin plate storage portion having a plate thickness thinner than the frame, thereby being able to improve rigidity compared to a case where this structure is not provided.

[0024] According to the eighth aspect, the third storage portion is the thin plate storage portion, and the rigidity can be improved compared to a case where this structure is not provided.

[0025] According to the ninth aspect, the thin plate storage section is the second storage section and the third storage section, and the rigidity can be improved compared to a case where such a structure is not provided.

[0026] According to the tenth aspect, the frame has an area that accounts for less than 2 / 3 of the total area of ​​the side surface on which the substrate is mounted, thereby reducing the material used for the frame compared to a case without such a structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of an image forming apparatus to which the present embodiment is applied.

[0028] Figure 2 This is a perspective view for explaining a frame that holds an image forming unit of the image forming apparatus.

[0029] Figure 3 This is a diagram for explaining a storage unit attached to a frame.

[0030] Figure 4 This is a diagram to show whether the frame of the storage unit is installed or not. Figure 4 (a) shows a modeled frame when the storage unit is not installed. Figure 4 (b) and Figure 4 (c) shows an example of installation arrangement when the storage unit is installed on the frame. Figure 4 (b) and Figure 4 (c) shows the state of the frame viewed from the side.

[0031] Figure 5 It means in Figure 4 (a)~ Figure 4 AA plane when displacement in the +Y direction is applied to the measuring points B1 and B3 in each installation configuration example (c) (refer to Figure 4 (a)) is a graph of the flatness of the surface, with the vertical axis representing the flatness and the horizontal axis representing the flatness. Figure 4 B1 displacement and B3 displacement of each installation configuration example.

[0032] Figure 6 This is a diagram for explaining the connection method between mutually adjacent storage sections. Figure 6 (a) is a connection method, Figure 6 (b) is another connection method. Figure 6 (c) indicates that the vertical axis is flatness and the horizontal axis is Figure 6 (a) and Figure 6 Graph of B1 displacement and B3 displacement in (b).

[0033] Figure 7 This is a diagram for explaining a method of combining the outer shapes of the storage section to change the outer shape. Figure 7 (a) is an appearance combination method, Figure 7 (b) is another shape combination. Figure 7 (c) is another shape combination, Figure 7 (d) indicates that the vertical axis is flatness and the horizontal axis is Figure 7 (a)~ Figure 7 Graph of B1 displacement and B3 displacement in (c).

[0034] Figure 8 This is a diagram for explaining the frame connection method in which the storage unit and the frame are connected. Figure 8 (a) is a frame connection method, Figure 8 (b) is another frame connection method. Figure 8 (c) is another frame connection method, Figure 8 (d) indicates that the vertical axis is flatness and the horizontal axis is Figure 8 (a)~ Figure 8 Graph of B1 displacement and B3 displacement in (c).

[0035] Fig. 9 This is a diagram for explaining the combination of plate thicknesses in which the plate thickness of the storage section is changed. Fig. 9 (a)~ Fig. 9 (d) represents various combinations of plate thicknesses.

[0036] Fig.10 Yes means Fig. 9 (a)~ Fig. 9 Graph of B1 displacement and B3 displacement in (d). DETAILED DESCRIPTION

[0037] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the size, thickness, etc. of each part in the drawings referred to in the following description may be different from the actual size.

[0038] <Image Forming Apparatus 100 >

[0039] Figure 1 1 is a schematic diagram showing the structure of an image forming apparatus 100 to which the present embodiment is applied.

[0040] like Figure 1 As shown in FIG. 1 , the image forming apparatus 100 includes: a document reading device 1 for reading information of a document 10; an image forming unit 2 for forming an image on a recording paper 16 based on the information of the document read by the document reading device 1 (read image); and a paper feeding unit 3 for feeding out the recording paper 16 fed to the image forming unit 2. In the image forming apparatus 100, the image forming unit 2 and the paper feeding unit 3 are housed inside a main body 101, and the document reading device 1 is disposed above the main body 101. The main body 101 has a discharge storage unit 102 on its upper surface for discharging and storing the recording paper 16 on which the image is formed.

[0041] The document reading device 1 has a housing 103. In addition, the document reading device 1 has a light-transmitting document table 105 on which the document 10 is placed, and a document cover 106 that covers the document table 105 and can be opened and closed on the housing 103, on the upper surface of the housing 103. The document cover 106 is provided with: an automatic document conveying unit 107 that conveys the document 10 to a reading position and discharges the read document 10; a document tray 108 that loads the document 10 conveyed by the automatic document conveying unit 107; and a storage unit 109 that stores the document 10 discharged from the automatic document conveying unit 107.

[0042] The image forming unit 2 includes, for example, an image forming unit 20 for forming toner images of yellow (Y), magenta (M), cyan (C), and black (K) in an electrophotographic method; an intermediate transfer unit 26 for conveying the toner images formed by the image forming unit 20 until the toner images are transferred to the recording paper 16; and a fixing unit 27 for fixing the toner images transferred from the intermediate transfer unit 26 to the recording paper 16. Thus, the image forming unit 2 has multiple functions such as development, transfer, and fixing.

[0043] The image forming unit 2 is a printing mechanism that forms an image on the recording paper 16. Here, the image forming unit 2 is, for example, a printer, and can use an electrophotographic method that forms an image by transferring toner attached to a photosensitive body to the recording paper 16, or an inkjet method that forms an image by ejecting ink onto the recording paper 16.

[0044] The paper feed section 3 includes a storage body 31 and a delivery device 32. The storage body 31 is a drawable storage body 31 that can carry a plurality of recording papers 16 of a predetermined size and type. The delivery device 32 delivers the recording papers 16 stored in the storage body 31 one by one to the delivery path. A supply delivery path 28 is arranged between the paper feed section 3 and the image forming section 2 to deliver the recording papers 16 delivered from the paper feed section 3 to the secondary transfer position.

[0045] Figure 2 This is a perspective view for explaining the frame 4 that holds the image forming unit 2 of the image forming apparatus 100. The frame 4 constitutes the main body 101 (see FIG. Figure 1 ) part.

[0046] like Figure 2 As shown, the frame 4 is configured to include longitudinal portions 41, 42 extending in the Y direction or the longitudinal direction and transverse portions 43, 44, 45 extending in the Z direction or the transverse direction. The longitudinal portions 41, 42 and the transverse portions 43, 44, 45 form the side 5 of the frame 4. In addition, the transverse portion 45 may be mounted by screws in addition to being mounted by welding.

[0047] When focusing on the space 61 formed between the lateral portions 43 and 45, the width 61a of the space 61 in the Y direction is larger than the width 45a of the lateral portion 45. The space 61 is an example of a space portion.

[0048] The longitudinal direction here refers to the up-down direction or the vertical direction of the frame 4 when the image forming apparatus 100 is placed on a surface such as a floor, and the lateral direction refers to the left-right direction or the horizontal direction of the frame 4 .

[0049] To further describe, in side surface 5, longitudinal portion 41 and transverse portion 43 form corner 51, and longitudinal portion 42 and transverse portion 43 form corner 52. In addition, longitudinal portion 41 and transverse portion 44 form corner 53, and longitudinal portion 42 and transverse portion 44 form corner 54.

[0050] The longitudinal portions 41 and 42 are examples of frame portions extending in the vertical direction, and the transverse portions 43 to 45 are examples of longitudinally long portions extending in the horizontal direction. The side surface 5 is an example of a side surface.

[0051] Figure 3 This is a diagram for explaining the storage portion 71 attached to the frame 4 .

[0052] Figure 3 The housing portion 71 shown is a housing mounted on the frame 4 and houses a substrate 72 indicated by a dotted line. The substrate 72 is, for example, a printed circuit board and performs at least a part of the functions of the image forming portion 2 as described above.

[0053] The substrate 72 is housed in the housing portion 71 which is a sealed case, so that when the substrate 72 becomes a source of electromagnetic waves, electromagnetic waves are not leaked to the outside, and resistance to the surrounding electromagnetic environment can be maintained.

[0054] To further describe, a plurality of storage portions 71 are mounted on the side surface 5 of the frame 4. More specifically, the plurality of storage portions 71 are arranged so that at least a portion of the plurality of storage portions 71 is connected to the longitudinal portions 41, 42.

[0055] In the present embodiment, the substrate 72 is mounted on the frame 4 in a state of being accommodated in the accommodating portion 71, but the present invention is not limited thereto, and it is also conceivable to directly mount the substrate 72 on the frame 4 without using the accommodating portion 71. That is, the structure in which the substrate 72 is mounted on the frame 4 includes not only the case in which the substrate 72 is directly mounted on the frame 4, but also the case in which the substrate 72 is mounted on the frame 4 in a state in which the substrate 72 is accommodated in the accommodating portion 71.

[0056] Hereinafter, as an example of mounting and disposing the substrate 72 on the frame 4 , a case where the substrate 72 is housed in the housing portion 71 will be described, and a case where the substrate 72 is directly mounted will be omitted, but the same can be performed.

[0057] In addition, when there are a plurality of storage sections 71, they are divided into storage sections 71a, 71b, 71c, etc., and each of the storage sections 71a to 71c is provided with substrates 72a to 72c. In addition to the case where each of the substrates 72a to 72c is formed as a single sheet, it is also possible to arrange the substrates 72a to 72c in a double-layered manner. In addition, it is also possible to arrange the substrates 72a to 72c in a horizontal manner on a plane.

[0058] Next, the influence of whether or not the storage section 71 is installed and the installation arrangement example on the flatness will be described. The flatness here refers to the size indicating the flatness of a certain surface.

[0059] Figure 4 This is a diagram for explaining whether the frame 4 has a storage portion 71 installed or not. Figure 4 (a) shows the modeled frame 4 when the storage unit 71 is not installed. Figure 4 (b) and Figure 4 (c) shows an example of installation arrangement when the storage section 71 is installed on the frame 4. Figure 4 (b) and Figure 4 (c) shows the state of the frame 4 as viewed from the side 5. In addition, Figure 4 The AA plane shown in (a) is an XZ plane including the measurement points A1 and A3 and is used for the following Figure 5 etc.

[0060] like Figure 4 As shown in (a), in the modeled frame 4, the storage portion 71 is not installed on the side 5 (refer to Figure 3 As described above, the side surface 5 is a surface composed of the longitudinal portions 41 and 42 and the transverse portions 43 and 44.

[0061] in addition, Figure 4 The measuring point B1 shown in (a) and the corner 53 described above (refer to Figure 2 ). In addition, the measuring points B3, A1, and A3 correspond to the corners 54, 51, and 52 described above (see Figure 2 )correspond.

[0062] exist Figure 4 In the installation configuration example shown in (b), the storage parts 71a, 71b, and 71c are arranged obliquely on the side surface 5 of the frame 4. That is, the storage part 71a is arranged at the measurement point A3, the storage part 71c is arranged at the measurement point B1, and the storage part 71b is arranged between the storage parts 71a and 71c. The storage part 71b is connected to the storage parts 71a and 71c.

[0063] To further explain, Figure 4In the mounting arrangement example shown in (b), the storage portion 71b is arranged so as to include the imaginary center line Z1 which is the center line of the imaginary frame 4 in the horizontal direction, that is, the Z direction.

[0064] In addition, Figure 4 In the example of installation arrangement shown in (b), the storage section 71a located at the uppermost part and the storage section 71c located at the lowermost part are located in different areas when the frame 4 is divided into two areas 55 and 56 by the imaginary center line Z1. That is, the storage section 71a is located in the area 56 and the storage section 71c is located in the area 55. Figure 4 In the example of installation shown in (b), the storage parts 71a to 71c are arranged so as to be drawn with oblique lines.

[0065] In addition, Figure 4 In the installation arrangement example (b), the storage portions 71 a to 71 c are not arranged in bilateral symmetry on the side surface 5 .

[0066] Figure 4 The storage portion 71a in (b) is an example of the first substrate, the storage portion 71b is an example of the third substrate, and the storage portion 71c is an example of the second substrate.

[0067] exist Figure 4 In the installation configuration example shown in (c) of Figure 4 The storage parts 71a, 71b, and 71c are arranged in the same manner as in the case (b), but are not arranged in an inclined manner. That is, the storage parts 71a to 71c are arranged in a longitudinal arrangement at the center of the Z direction. More specifically, the storage part 71a is located at the top, the storage part 71c is located at the bottom, and the storage part 71b is connected to the storage parts 71a and 71c.

[0068] Figure 5 It means in Figure 4 (a)~ Figure 4 AA plane when displacement in the +Y direction is applied to the measuring points B1 and B3 in each installation configuration example (c) (refer to Figure 4 (a)) is a graph of the flatness of the surface, with the vertical axis representing the flatness and the horizontal axis representing the flatness. Figure 4 B1 displacement and B3 displacement of each mounting arrangement example in FIG. The B1 displacement and B3 displacement are simulation results when the measurement points B1 and B3 are forcibly displaced by 10 mm in the Y direction.

[0069] exist Figure 5 In the graph shown, the result is that the smaller the flatness value, the better. Figure 4 (a)~ Figure 4 When comparing the flatness of each mounting configuration example shown in (c), Figure 4The installation configuration example shown in (a) has the largest values ​​in both B1 displacement and B3 displacement. Figure 4 The installation configuration example shown in (b) and Figure 4 In the case of the mounting configuration example shown in (c), the B1 displacement and the B3 displacement are both Figure 4 In the case of the installation configuration example shown in (a), the value is smaller.

[0070] exist Figure 5 In the chart of Figure 4 The installation configuration example shown in (b) and Figure 4 When compared with the mounting configuration example shown in (c), in the B3 displacement, Figure 4 In the case of the installation configuration example shown in (b), Figure 4 In the case of the installation configuration example shown in (c), the value is smaller.

[0071] On the other hand, in the B1 displacement, Figure 4 The installation configuration example shown in (b) and Figure 4 In the case of the installation configuration example shown in (c), the values ​​are approximately the same.

[0072] Thus, when focusing on the B3 displacement, the effect of the forced displacement of 10 mm in the Y direction is: Figure 4 The installation configuration example shown in (b) is Figure 4 (a) Figure 4 Therefore, when the storage parts 71a to 71c are arranged on the side 5, the influence of the forced displacement of 10 mm in the Y direction on the measuring points B1 and B3 is suppressed. Furthermore, when the storage parts 71a to 71c are arranged on the side 5 in a diagonal shape connecting the measuring points A3 and B1, the influence at the measuring point B3 is further suppressed compared with the case where they are arranged in a straight line.

[0073] For example, when there is a measurement point (for example, measurement point B3) at which the influence of the forced displacement of 10 mm in the Y direction is to be suppressed, this can be achieved by arranging a plurality of measurement points other than this measurement point in a diagonal line.

[0074] Next, for the above Figure 4 More specifically, the following describes a preferred method for the inclined configuration of the storage sections 71a to 71c shown in (b). More specifically, the following describes a method for connecting the storage sections 71a to 71c to each other, a method for combining the outer shapes of the storage sections 71a to 71c, a method for combining the frame connections between the storage sections 71a to 71c and the frame 4, and a method for combining the plate thicknesses of the storage sections 71a to 71c.

[0075] Furthermore, in addition to the case where any one of the connection method, the outer shape combination method, the frame connection method, and the plate thickness combination method is adopted, a case where any plurality of methods are combined and adopted is also conceivable.

[0076] Figure 6 2 is a diagram for explaining the connection between mutually adjacent storage sections 71a to 71c. Figure 6 (a) is a connection method, Figure 6 (b) is another connection method. Figure 6 (c) is the vertical axis represents flatness, the horizontal axis represents Figure 6 (a) and Figure 6 The diagram of B1 displacement and B3 displacement in (b) is shown in FIG. Figure 6 In the graph (c), as a comparison object, Figure 4 The situation of (a).

[0077] exist Figure 6 In a connection method shown in (a), mutually adjacent storage sections 71a to 71c are connected to each other through surfaces extending in the Y direction. That is, the surface 74a of the storage section 71a is connected to the surface 73b of the storage section 71b, and the surface 74b of the storage section 71b is connected to the surface 73c of the storage section 71c. In other words, Figure 6 In a connection mode shown in (a), the combination between the storage parts is horizontal, and the multiple storage parts are connected to each other in the horizontal direction. In addition, as mentioned above, in the case where multiple substrates are installed to the side 5 without using multiple storage parts, a structure in which multiple substrates are horizontally connected to each other is also considered.

[0078] exist Figure 6 In another connection method shown in (b), mutually adjacent storage sections 71a to 71c are connected to each other through surfaces extending in the Z direction. That is, the surface 76a of the storage section 71a is connected to the surface 75b of the storage section 71b, and the surface 76b of the storage section 71b is connected to the surface 75c of the storage section 71c. In other words, Figure 6 In another connection method shown in (b), the connection between the storage parts is longitudinal.

[0079] exist Figure 6 In the graph shown in (c), the displacement of B3 is considered. Figure 6 (a) and Figure 6 When compared with the connection method of (b), Figure 6 The connection method shown in (a) is better than Figure 6 The connection method shown in (b) has a small value.

[0080] In more detail, the following results were obtained: Although Figure 6 The B3 displacement ratio in the connection shown in (b) Figure 4The case shown in (a) is small, but Figure 6 The B3 displacement in the connection mode shown in (a) is almost non-existent.

[0081] Thus, if we focus on the B3 displacement, Figure 6 In the case of the connection method shown in (a), that is, when the connection between the storage parts is not longitudinal but transverse, the influence of the forced displacement of 10 mm in the Y direction can be eliminated. Therefore, as a connection method for mutually adjacent storage parts 71a to 71c, from the perspective of the flatness of the measurement point B3, it is preferred to use the surface in the Y direction for connection.

[0082] Figure 7 This is a diagram for explaining a combination method of changing the outer shapes of the storage parts 71a to 71c. Figure 7 (a) is an appearance combination mode, Figure 7 (b) is another shape combination. Figure 7 (c) is another shape combination, Figure 7 (d) is the vertical axis represents flatness, the horizontal axis represents Figure 7 (a)~ Figure 7 The diagram of B1 displacement and B3 displacement in (c) is shown in FIG. Figure 7 In the graph (d), as a comparison object, Figure 4 The situation of (a).

[0083] exist Figure 7 In the outer shape combination shown in (a), the outer shape of the storage part 71b among the storage parts 71a to 71c is larger than the outer shapes of the storage parts 71a and 71c. The storage parts 71a and 71c have the same outer shape. Figure 7 In the outer shape combination shown in (a), the storage portion 71b with a larger outer shape is located in the middle of the arrangement of the storage portions 71a to 71c.

[0084] exist Figure 7 In another shape combination shown in (b), the shape of storage section 71a among storage sections 71a to 71c is larger than the shapes of storage sections 71b and 71c, and the shape of storage section 71b is larger than the shape of storage section 71c. That is, the shapes of storage sections 71a to 71c are different sizes. Moreover, storage section 71a installed at measuring point A3 is the largest, and storage section 71c installed at measuring point B1 is the smallest. Figure 7 In another outer shape combination shown in (b), the storage portion 71a with a larger outer shape is arranged at the upper side.

[0085] exist Figure 7In another outer shape combination shown in (c), the outer shape of the storage portion 71c among the storage portions 71a to 71c is larger than the outer shapes of the storage portions 71a and 71b, and the outer shape of the storage portion 71b is larger than the outer shape of the storage portion 71a.

[0086] Thus, the outer shapes of the storage portions 71a to 71c are similar to Figure 7 The same as in the case of (b), they are different in size. Moreover, the storage portion 71c installed at the measuring point B1 is the largest, and the storage portion 71a installed at the measuring point A3 is the smallest. Figure 7 In another outer shape combination shown in (c), the storage portion 71c with a large outer shape is arranged at the bottom.

[0087] In addition, the outer shapes of the storage portions 71a to 71c are the same as those of the substrates 72a to 72c (see Figure 3 ) corresponding to the size, for example, when the outer shape of the storage portion 71a is larger than the outer shapes of the other storage portions 71b and 71c, the outer shape of the substrate 72a stored in the storage portion 71a is larger than the outer shapes of the other substrates 72b and 72c.

[0088] Furthermore, as described above, in addition to the case where each of the substrates 72a to 72c is attached to the frame 4 via the corresponding storage portions 71a to 71c, it is also possible to attach the substrates 72a to 72c directly to the frame 4.

[0089] exist Figure 7 In the graph shown in (d), not only the B3 displacement but also the B1 displacement is compared. Figure 7 (a) Figure 7 (b) and Figure 7 (c) The connection method of B3 is the smallest displacement. Figure 7 (c) of the connection method shown in the case, but in Figure 7 In the case of the connection method shown in (c), B1 has the largest displacement. Therefore, the following result is obtained: From the perspective of flatness, it is preferred that B3 has a small displacement. Figure 7 The connection method shown in (a) and Figure 7 The connection method shown in (b).

[0090] Therefore, when the outer shapes of the storage sections 71a to 71c are different, it is preferable to arrange the storage section having a larger outer shape among the storage sections 71a to 71c on the upper side (in the Y direction).

[0091] Figure 8 This is a diagram for explaining a frame connection method for connecting the storage parts 71a to 71c and the frame 4. Figure 8 (a) is a frame connection method, Figure 8 (b) is another frame connection method. Figure 8(c) is another frame connection method, Figure 8 (d) The vertical axis represents flatness, and the horizontal axis represents Figure 8 (a)~ Figure 8 The diagram of B1 displacement and B3 displacement in (c) is shown in FIG. Figure 8 In the graph (d), as a comparison object, Figure 4 The situation of (a).

[0092] exist Figure 8 In the frame connection mode shown in (a), the storage portion 71a is connected to the longitudinal portion 42 but not to the transverse portion 43. In addition, the storage portion 71c is connected to the longitudinal portion 41 but not to the transverse portion 44.

[0093] exist Figure 8 In another frame connection mode shown in (b), the storage portion 71a is connected to the transverse portion 43 but not to the longitudinal portion 42. In addition, the storage portion 71c is connected to the transverse portion 44 but not to the longitudinal portion 41.

[0094] exist Figure 8 In another frame connection method shown in (c), Figure 8 The same as the frame connection method shown in (a), the storage portion 71a is connected to the longitudinal portion 42 but not to the transverse portion 43, and the storage portion 71c is connected to the longitudinal portion 41 but not to the transverse portion 44.

[0095] To further explain, Figure 8 In another frame connection method shown in (c), the position where the storage portion 71a is connected to the longitudinal portion 42 is shorter than Figure 8 The frame connection shown in (a) is closer to the lower side and is separated from the horizontal portion 43. In addition, the position where the storage portion 71c is connected to the vertical portion 41 is smaller than Figure 8 The frame connection shown in (a) is close to the upper side and separated from the lateral part 44.

[0096] In this way, Figure 8 (a)~ Figure 8 In the frame connection method shown in (c), the storage portion 71a located at the uppermost part and the storage portion 71c located at the lowermost part are installed in a manner connected to any one of the longitudinal portions 41, 42 extending in the vertical direction and the transverse portions 43, 44 extending in the horizontal direction without being connected to the other (refer to Figure 8 (a)~ Figure 8 (c)).

[0097] in addition, Figure 8 (a) Figure 8The storage portions 71 a and 71 c of the frame connection method shown in (c) are connected to the longitudinal portions 41 and 42 but not to the transverse portions 43 and 44 .

[0098] In addition, as described above, it is also possible to consider substrates 72a to 72c (see Figure 3 ) is not in a state of being stored in the storage sections 71a to 71c, but is directly mounted on the frame 4. In this case, the "storage section 71a", "storage section 71b", and "storage section 71c" in the above description of the same paragraph can be replaced by "substrate 72a", "substrate 72b", and "substrate 72c".

[0099] Focus on Figure 8 When B3 is displaced as shown in the graph (d), Figure 8 The minimum value is the case of the frame connection method shown in (a). Figure 8 The frame connection method shown in (c) Figure 8 The order of the frame connection method shown in (b) becomes larger.

[0100] In addition, when looking at the B1 displacement in the graph, Figure 8 The minimum value is the case of the frame connection method shown in (c). Figure 8 The frame connection method shown in (a) Figure 8 The order of the frame connection method shown in (b) becomes larger.

[0101] Therefore, when not only the B3 displacement but also the B1 displacement is considered, a frame connection method in which the storage portion 71 a is connected to the longitudinal portion 42 and the storage portion 71 c is connected to the longitudinal portion 41 is preferred.

[0102] Fig. 9 This is a diagram for explaining a plate thickness combination method in which the plate thickness of the storage portions 71a to 71c is changed. Fig. 9 (a)~ Fig. 9 (d) represents various combinations of plate thicknesses. Fig.10 Yes means Fig. 9 (a)~ Fig. 9 The diagram of B1 displacement and B3 displacement in (d) is shown in FIG. Fig.10 In the chart, the comparison object is shown Figure 4 In the case of (a), in the plate thickness combination system, the storage portion 71a is an example of a first storage portion, the storage portion 71b is an example of a third storage portion, and the storage portion 71c is an example of a second storage portion.

[0103] exist Fig. 9In the plate thickness combination shown in (a), the plate thickness t of the storage section 71a among the storage sections 71a to 71c is 1 mm, the same as the frame 4, and the plate thickness t of the other storage sections 71b and 71c is 0.6 mm, which is thinner than the frame 4. In this case, the storage sections 71b and 71c are examples of thin plate storage sections.

[0104] exist Fig. 9 In the plate thickness combination shown in (b), the plate thickness t of the storage portion 71b is 1 mm, and the plate thickness t of the other storage portions 71a and 71c is 0.6 mm. In this case, the storage portions 71a and 71c are examples of thin plate storage portions.

[0105] exist Fig. 9 In the plate thickness combination shown in (c), the plate thickness t of the storage portion 71c is 1 mm, and the plate thickness t of the other storage portions 71a and 71b is 0.6 mm. In this case, the storage portions 71a and 71b are examples of thin plate storage portions.

[0106] In this way, Fig. 9 (a)~ Fig. 9 In (c), the plate thickness t of any one of the storage portions 71a to 71c is 1 mm, and the plate thickness t of the other storage portions is 0.6 mm.

[0107] In addition, Fig. 9 In the plate thickness combination shown in (d), the plate thickness t of any one of the housing portions 71 a to 71 c is also 1 mm.

[0108] exist Fig.10 In the graph shown, when focusing on the displacement of B3, the following results are obtained: Fig. 9 In the case of the plate thickness combination shown in (c), the value of B3 displacement is approximately 0. In addition, the value of B3 displacement is Fig. 9 In the case of the plate thickness combination shown in (a), Fig. 9 In the case of the plate thickness combination shown in (b), Fig. 9 The order of the plate thickness combination shown in (d) becomes larger.

[0109] In addition, Fig.10 In the graph shown, when focusing on the B1 displacement, the following results are obtained: Fig. 9 In the case of the plate thickness combination shown in (a), the value of B1 displacement is the smallest. Fig. 9 In the case of the plate thickness combination shown in (b), Fig. 9 In the case of the plate thickness combination shown in (c), Fig. 9 The order of the plate thickness combination shown in (d) becomes larger.

[0110] To further explain, if we focus on both B3 displacement and B1 displacement, the most preferred Fig. 9 The following is preferably the case of the plate thickness combination shown in (a). Fig. 9 The case of the plate thickness combination shown in (c). Fig. 9 The plate thickness combination shown in (b) Fig. 9 That is, the thicker the plate thickness t is, the worse the flatness is. Therefore, in the plate thickness combination method, it is preferred that the plate thickness t of any one of the storage portions 71a to 71c is thinner than the frame 4.

[0111] Here, Figure 2 The frame 4 shown is illustrated.

[0112] The frame 4 is provided with the storage portions 71a to 71c (see, for example, Figure 4 In the side 5 of (b), the ratio of the area of ​​the frame 4 to the total area of ​​the side 5 is less than 2 / 3. In the case of this ratio, the significance of the reinforcement of mounting the substrates 72a to 72c on the side 5 via the storage portions 71a to 71c is enhanced. In addition, the same is true when the above-mentioned substrates 72a to 72c are directly mounted on the side 5.

[0113] The total area of ​​the side surface 5 mentioned here refers to the area including the area of ​​the region surrounded by the longitudinal portions 41, 42 and the transverse portions 43, 44, and the area of ​​the side surface 5 of the longitudinal portions 41, 42 and the transverse portions 43, 44. In addition, the area of ​​the frame 4 refers to the area obtained by subtracting the area of ​​the space 61 of the side surface 5, the area of ​​the notch, etc. from the total area of ​​the side surface 5.

[0114] <Note>

[0115] (((1)))An image forming apparatus, wherein:

[0116] A frame is provided, the frame holding an image forming unit, a substrate having a part of the function of the image forming unit is installed, and in a side surface on which the substrate is installed, a width in the vertical direction of a space portion formed between a plurality of longitudinal shape portions extending in the horizontal direction from a frame portion extending in the vertical direction is greater than a width in the vertical direction of the longitudinal shape portion,

[0117] There are multiple substrates, and at least a portion of the substrates are arranged in a connected manner between frame parts extending along the vertical direction. The substrate located at the top and the substrate located at the bottom in the vertical direction of the connected substrates are arranged so that they are located in different areas when the frame is divided into two areas by a center line in the horizontal direction.

[0118] (((2)))The image forming apparatus according to (((1))), characterized in that:

[0119] The plurality of substrates are connected to each other in the horizontal direction.

[0120] (((3)))The image forming device according to (((1))) or (((2))), characterized in that:

[0121] The plurality of substrates include: the substrate located at the top, namely the first substrate; the substrate located at the bottom, namely the second substrate; and a third substrate located between the first substrate and the second substrate in the vertical direction.

[0122] The first substrate or the third substrate has a larger outer shape than the second substrate.

[0123] (((4)))The image forming device according to (((3))), characterized in that:

[0124] The first substrate has a larger outer shape than the third substrate.

[0125] (((5)))The image forming apparatus according to any one of (((1))) to (((4))), characterized in that:

[0126] The uppermost substrate and the lowermost substrate are mounted so as to be connected to one of the frame portion extending in the vertical direction and the longitudinally long portion extending in the horizontal direction but not to the other.

[0127] (((6)))The image forming device according to (((5))), characterized in that:

[0128] The above aspect is an aspect in which the frame portion is connected to the frame portion extending in the vertical direction and is not connected to the longitudinally long portion extending in the horizontal direction.

[0129] (((7)))The image forming device according to (((1))), characterized in that:

[0130] In the case where the uppermost substrate, i.e., the first substrate, is mounted on the one side surface via the first receiving portion, the lowermost substrate, i.e., the second substrate, is mounted on the one side surface via the second receiving portion, and the third substrate located between the first substrate and the second substrate in the vertical direction is mounted on the one side surface via the third receiving portion,

[0131] Any one of the first storage portion, the second storage portion, and the third storage portion includes a thin plate storage portion having a plate thickness thinner than that of the frame.

[0132] (((8)))The image forming device according to (((7))), characterized in that:

[0133] The third storage portion is the thin plate storage portion.

[0134] (((9)))The image forming device according to (((8))), characterized in that:

[0135] The thin plate storage portion includes the second storage portion and the third storage portion.

[0136] (((10)))The image forming device according to (((1))) is characterized in that:

[0137] Regarding the frame, in the one side surface on which the substrate is mounted, a ratio of an area of ​​the frame to a total area of ​​the one side surface is not more than 2 / 3.

[0138] According to (((1))), in a side surface of a frame on which a substrate is mounted, the rigidity of the image forming device can be ensured even when the vertical width of a space portion formed between a plurality of longitudinally shaped portions extending in a horizontal direction from frame portions extending in a vertical direction is greater than the vertical width of the longitudinally shaped portions.

[0139] According to (((2))), the plurality of substrates are connected to each other in the horizontal direction, and the rigidity can be improved compared to a case where this structure is not provided.

[0140] According to (((3))), the plurality of substrates include: a first substrate which is located at the top; a second substrate which is located at the bottom; and a third substrate which is located between the first and second substrates in a vertical direction. The outer shape of the first substrate or the third substrate is larger than that of the second substrate. This improves the rigidity of mounting substrates of different sizes on a frame compared to a case where this structure is not provided.

[0141] According to (((4))), the outer shape of the first substrate is larger than the outer shape of the third substrate, and the rigidity can be further improved compared to a case where this structure is not provided.

[0142] According to (((5))), the substrate located at the top and the substrate located at the bottom are installed in a manner of being connected to either one of the frame portion extending in the vertical direction and the longitudinal shape portion extending in the horizontal direction without being connected to the other, which can reduce the manufacturing cost compared to a case where this structure is not provided.

[0143] According to (((6))), the structure is connected to the frame portion extending in the vertical direction and is not connected to the longitudinally long portion extending in the horizontal direction. This can improve rigidity compared to a case where this structure is not provided.

[0144] According to (((7))), when the uppermost substrate, i.e., the first substrate, is mounted on one side via a first storage portion, the lowermost substrate, i.e., the second substrate, is mounted on one side via a second storage portion, and a third substrate located between the first substrate and the second substrate in a vertical direction is mounted on one side via a third storage portion, any one of the first storage portion, the second storage portion, and the third storage portion includes a thin plate storage portion having a plate thickness thinner than the frame, thereby being able to improve rigidity compared to a case where this structure is not provided.

[0145] According to (((8))), the third storage portion is the thin plate storage portion, and the rigidity can be improved compared to a case where this structure is not provided.

[0146] According to (((9))), the thin plate storage section is the second storage section and the third storage section, and the rigidity can be improved compared to a case where such a structure is not provided.

[0147] According to (((10))), in the frame, the ratio of the area of ​​the frame to the total area of ​​the side surface on which the substrate is mounted is less than 2 / 3, and the material used for the frame can be reduced compared to a case where this structure is not provided.

Claims

1. An image forming device, characterized in that: A frame is provided, the frame holding an image forming unit, a substrate having a part of the function of the image forming unit is installed, and in a side surface on which the substrate is installed, a width in the vertical direction of a space portion formed between a plurality of longitudinal shape portions extending in the horizontal direction from a frame portion extending in the vertical direction is greater than a width in the vertical direction of the longitudinal shape portion, There are multiple substrates, and at least a part of the substrates are arranged in a connected form between frame parts extending along the vertical direction. The substrate located at the top and the substrate located at the bottom in the vertical direction of the connected substrates are arranged so that they are located in different areas when the frame is divided into two areas by a center line in the horizontal direction.

2. The image forming apparatus according to claim 1, wherein: The plurality of substrates are connected to each other in the horizontal direction.

3. The image forming apparatus according to claim 1 or 2, wherein: The plurality of substrates include: the substrate located at the top, namely the first substrate; the substrate located at the bottom, namely the second substrate; and a third substrate located between the first substrate and the second substrate in the vertical direction. The first substrate or the third substrate has a larger outer shape than the second substrate.

4. The image forming apparatus according to claim 3, wherein: The first substrate has a larger outer shape than the third substrate.

5. The image forming apparatus according to any one of claims 1 to 4, wherein: The uppermost substrate and the lowermost substrate are mounted so as to be connected to one of the frame portion extending in the vertical direction and the longitudinally long portion extending in the horizontal direction but not to the other.

6. The image forming apparatus according to claim 5, wherein: The above aspect is an aspect in which the frame portion is connected to the frame portion extending in the vertical direction and is not connected to the longitudinally long portion extending in the horizontal direction.

7. The image forming apparatus according to claim 1, wherein: In the case where the uppermost substrate, i.e., the first substrate, is mounted on the one side surface via the first receiving portion, the lowermost substrate, i.e., the second substrate, is mounted on the one side surface via the second receiving portion, and the third substrate located between the first substrate and the second substrate in the vertical direction is mounted on the one side surface via the third receiving portion, Any one of the first storage portion, the second storage portion, and the third storage portion includes a thin plate storage portion having a plate thickness thinner than that of the frame.

8. The image forming apparatus according to claim 7, wherein: The third storage portion is the thin plate storage portion.

9. The image forming apparatus according to claim 8, wherein: The thin plate storage portion includes the second storage portion and the third storage portion.

10. The image forming apparatus according to claim 1, wherein: Regarding the frame, in the one side surface on which the substrate is mounted, a ratio of an area of ​​the frame to a total area of ​​the one side surface is not more than 2 / 3.

Images