JP5293965B2 - Structure for image forming apparatus and image forming apparatus - Google Patents

Abstract

The invention provides a construction body for image forming device and an image forming device, which solve the following problems: it is difficult to ensure the vertical position accuracy only by a part because a side plate is divided into upper, lower parts and it is also difficult to integrate the side plate. The construction body comprises: a vertical frame (102),(103),(105),(106), a pair of side plates (101),(104) which are opposite to each other while connecting adjacent vertical frames (102),(103),(105),(106), and a plurality of connection parts for connecting the side plates (101),(104), wherein the side plate comprises: a first side plate connection surface (101B) clamped between the vertical frames (102),(103) and the connection part and connected into the vertical frames (102),(103), a second side plate connection surface (101A) projecting from the first side plate connection surface (101B) towards the side, clamped between the vertical frames (102),(103) and the connection part and connected into the vertical frames (102),(103) and the vertical frame (102) also comprises a frame connection surface (102B) connected with the side plate connection surface (101B) of the side plate (101) and a frame connection surface (102A) connected with the side plate connection surface (101A).

Description

  The present invention relates to an image forming apparatus structure and an image forming apparatus.

  As an image forming apparatus such as a printer, a facsimile machine, a copying machine, a plotter, and a complex machine of these, for example, an ink jet recording apparatus using a recording head for discharging ink droplets is known. This ink jet recording apparatus means a sheet on which ink droplets are conveyed from a recording head (not limited to paper, including OHP, and can be attached to ink droplets and other liquids). Or a recording medium, recording paper, recording paper, medium, etc.) to form an image (recording, printing, printing, and printing are also used synonymously). A line using a serial type image forming apparatus that forms an image by ejecting droplets while the recording head moves in the main scanning direction, and a line type head that forms images by ejecting droplets without moving the recording head There is a type image forming apparatus.

  In the present application, “image forming apparatus” means an apparatus that forms an image by ejecting ink onto a medium such as paper, thread, fiber, fabric, leather, metal, plastic, glass, wood, ceramics, In addition, “image formation” not only applies an image having a meaning such as a character or a figure to a medium but also applies an image having no meaning such as a pattern to the medium (simply applying a droplet to the medium). It also means to land on. The “ink” is not limited to the ink, but is used as a general term for all liquids that can perform image formation, such as a recording liquid, a fixing processing liquid, and a liquid.

  Conventionally, as a structure for an image forming apparatus, a vertical frame standing up and down at the four corners of the apparatus, and adjacent vertical frames are fastened to each other, and a pair of opposing side plates and a plurality of connections for connecting the side plates are connected. There is a member (Patent Document 1), and according to this structure, it is possible to assemble units of different sizes by arranging the upper and lower side plates shifted from the front and back of the apparatus.

Japanese Patent No. 3650688

  By the way, as an image forming apparatus, for example, there is an apparatus in which roll paper is stored in the apparatus and conveyed to an image forming unit. In such an apparatus, a flange holder for holding and rotating the roll paper is inserted on the left and right sides of the roll paper, or the roll paper is held through the shaft. However, it is necessary to widen the width. On the other hand, the downstream side of the roll paper, that is, the image forming unit and the paper discharge unit only need to have a certain width with respect to the paper, and can be narrower than the roll paper storage unit.

  In addition, in the case of the serial type in the ink jet image forming apparatus, an image is formed from a maintenance / recovery mechanism that performs maintenance / recovery of the recording head, a waste liquid storage unit that stores waste liquid, and a recording head outside the image forming area in the main scanning direction Since an empty discharge receiver that receives liquid droplets that do not contribute to the position is disposed, the main scanning mechanism of the image forming unit becomes longer than the width of the roll paper storage unit. Furthermore, in order to narrow the apparatus width, it is preferable to narrow the width of the paper transport unit relative to the roll paper storage unit width.

  In this case, if the structure of the roll paper storage unit and the structure of the paper transport unit are separated, it is difficult to ensure the positional accuracy of the roll paper storage unit and the paper transport unit. On the other hand, if the structure of the roll paper storage unit and the structure of the paper transport unit are formed as an integral part, for example, a side plate, it is difficult to ensure rigidity as the structure unless the side plate has a considerable strength. There is a problem that there is.

  In the conventional structure described above, since the side plate is divided into upper and lower parts, there is a problem that it is difficult to obtain vertical position accuracy with only the parts. Moreover, since one side plate is fastened from the inside of the vertical frame and the other side plate is fastened from the outside of the vertical frame, there is a problem that it is difficult to integrate the side plates.

  The present invention has been made in view of the above problems, and while positioning and supporting position accuracy of the units provided on the upper and lower side plates are ensured even when the width (distance) between the side plates is different between the upper and lower sides in the structure. The purpose is to improve the rigidity.

In order to solve the above problems, an image forming apparatus structure according to the present invention includes:
A structure for an image forming apparatus in which a plurality of members having different widths are arranged,
Vertical frames standing up and down at the four corners of the device body;
While fastening adjacent vertical frames, a pair of opposing side plates,
A plurality of connecting members for connecting between the side plates,
The side plate is
A first side plate fastening surface sandwiched between the vertical frame and the connecting member and fastened to the vertical frame;
The second side plate is formed continuously from the first side plate fastening surface, protrudes inward from the first side plate fastening surface, is sandwiched between the vertical frame and the connecting member, and is fastened to the vertical frame. A side plate fastening surface,
The vertical frame is
A first frame fastening surface for fastening with the first side plate fastening surface;
A second frame fastening surface that is fastened to the second side plate fastening surface is provided.

  An image forming apparatus according to the present invention includes the structure for an image forming apparatus according to the present invention.

  According to the image forming apparatus structure and the image forming apparatus according to the present invention, the image forming apparatus structure includes a plurality of members having different widths, and is erected in the vertical direction of the four corners of the apparatus main body. The vertical frame and the adjacent vertical frames are fastened to each other and provided with a pair of opposing side plates and a plurality of connecting members that connect the side plates, and the side plates are sandwiched between the vertical frame and the connecting members, The first side plate fastening surface fastened to the frame, and continuously formed from the first side plate fastening surface, protrudes inward from the first side plate fastening surface, sandwiched between the vertical frame and the connecting member, And a second side plate fastening surface fastened to the first side plate fastening surface and a second side plate fastening surface fastened to the first side plate fastening surface. Frame fastening surface, Even width (distance) differs between the side plates at upper and lower structure, positioning of the units provided in the upper and lower side plates, while ensuring the support position accuracy, rigidity can be improved.

1 is an external perspective view illustrating an overall configuration of an ink jet recording apparatus as an image forming apparatus according to the present invention. It is a typical side surface explanatory drawing similarly. FIG. 2 is a perspective explanatory view of the structure of the recording apparatus from the front side of the apparatus main body. It is the isometric view explanatory drawing similarly seen from the apparatus main body rear side. FIG. 2 is a cross-sectional explanatory view of the structure from the side of the apparatus main body. It is a principal part exploded perspective view of the structure. It is a principal part perspective explanatory drawing similarly. FIG. 4 is a schematic front view of FIG. 3.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. An example of an ink jet recording apparatus as an image forming apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is an explanatory perspective view showing the overall configuration of the recording apparatus, and FIG. 2 is a schematic side explanatory view of the apparatus.

  This ink jet recording apparatus is a serial type ink jet recording apparatus. Inside the recording apparatus main body 1, an image forming unit 2, a paper suction conveyance unit 3, a roll paper storage unit 4, an electrical equipment substrate storage unit 6 and the like are arranged. An image reading unit 7 (not shown in FIG. 1) is provided on the upper part of the apparatus main body 1.

  In the image forming unit 2, a guide rod 13 and a guide rail 14 are spanned on both side plates (not shown), and a carriage 15 is held on the guide rod 13 and the guide rail 14 so as to be slidable in the direction of arrow A.

  The carriage 15 is mounted with a liquid ejection head that ejects ink droplets of each color of black (K), yellow (Y), magenta (M), and cyan (C). Although not shown, each recording head is integrally provided with a sub tank that supplies ink to each recording head.

  The main scanning mechanism that moves and scans the carriage 15 is disposed on one side in the main scanning direction, a driving pulley 22 that is rotationally driven by the driving motor 21, and on the other side in the main scanning direction. A driven pulley 23 and a belt member 24 wound around the drive pulley 22 and the driven pulley 23 are provided. The driven pulley 23 is tensioned outward (a direction away from the drive pulley 22) by a tension spring (not shown). The belt member 24 pulls the carriage 15 in the main scanning direction (arrow A direction) by being partly fixed and held by a belt fixing portion provided on the back side of the carriage 15.

  An encoder sheet (not shown) for detecting the main scanning position of the carriage is arranged along the main scanning direction of the carriage 15, and the encoder sheet is read by an encoder sensor (not shown) provided on the carriage.

  In the main scanning area of the carriage 15, in the recording area, the paper 30 is intermittently conveyed by the paper suction / conveyance unit 3 in a direction orthogonal to the main scanning direction of the carriage 15 (sub-scanning direction: arrow B direction). .

  In addition, a maintenance / recovery mechanism 18 that performs maintenance / recovery of the recording head is disposed in one end side region of the main scanning region. Further, a main cartridge 19 containing each color ink to be supplied to the sub-tank of the recording head is located outside the carriage movement region in the main scanning direction or the other end side region of the main scanning region with respect to the recording apparatus main body 1. And is detachably mounted.

  In addition, the roll paper storage unit 4 is a paper feeding unit, and roll paper (paper) 30 is set, but roll papers having different sizes in the width direction (arrow A direction) can be set. The roll paper 30 is mounted on a flange receiver 32 with a flange 31 attached to the paper shaft from both sides. A support roller (not shown) is provided inside the flange receiver 32, and the flange 31 rotates when the support roller contacts the outer periphery of the flange 31, and the paper 30 is fed.

  In this recording apparatus, the paper 30 conveyed from the roll paper container 4 is conveyed from the rear to the front of the recording apparatus main body 1 by conveying means (a roller pair 33, a registration roller 34 as a conveyance roller, and a registration pressure roller 35). Etc.) to the recording area. Then, while moving the carriage 15 in the main scanning direction and intermittently feeding the paper 40, the recording head is driven according to the image information to discharge droplets, thereby forming a required image on the paper 30. The Further, the paper after the image formation is cut to a predetermined length and discharged to a paper discharge tray (not shown) disposed on the front side of the apparatus main body 1.

  Next, the structure of the ink jet recording apparatus will be described with reference to FIGS. 3 is a perspective explanatory view of the structure viewed from the front side of the apparatus main body, FIG. 4 is a perspective explanatory view of the structure viewed from the rear side of the apparatus main body, and FIG. 5 is a cross-sectional explanatory view of the structure from the side of the apparatus main body. 6 is an exploded perspective view of the main part of the structure, FIG. 7 is a perspective view of the same main part, and FIG. 8 is a schematic front view of FIG.

  The structure 100 is a structure for an image forming apparatus that accommodates a plurality of members having different widths, and is adjacent to vertical frames 102, 103, 105, and 106 erected in the vertical direction of the four corners of the apparatus main body 1. A pair of side plates 101 and 104 facing each other, and a roll paper receiving stay 107 which is a plurality of connecting members for connecting the side plates 101 and 104, and a bottom plate of the suction conveyance unit, are fastened to the vertical frames 102 and 103 and the frames 105 and 106. 108, a stay 109 before suction conveyance, a paper feeding registration roller receiving stay 110, an integrated electrical box lower stay 111, an electrical box lower stay reinforcing plate 112, an electrical box upper stay 113, and the like.

  The side plate 101 is sandwiched between the vertical frames 102 and 103 and a roll paper receiving stay 107 as a connecting member, a stay 109 before suction conveyance, an electrical box lower stay 111, an electrical box lower stay reinforcing plate 112, and the like. The first side plate fastening surface 101B fastened to the first side plate fastening surface 101B is formed continuously from the first side plate fastening surface 101B and protrudes inward from the first side plate fastening surface 101B. It has a second side plate fastening surface 101A sandwiched between connecting members such as a stay 109 and a paper feed registration roller receiving stay 110 and fastened to the vertical frames 102 and 103. Similarly, the side plate 104 has a first side plate fastening surface 104B and a second side plate fastening surface 104A.

  Further, as shown in FIG. 6, the vertical frame 102 includes a first frame fastening surface 102 </ b> B that fastens with the first side plate fastening surface 101 </ b> B of the side plate 101 and a second frame fastening that fastens with the second side plate fastening surface. 102A. Similarly, the vertical frame 103 has a first frame fastening surface 103B that fastens with the first side plate fastening surface 101B of the side plate 101, and a second frame fastening surface 103A that fastens with the second side plate fastening surface. ing. The vertical frame 105 has the same configuration (FIG. 8), and the vertical frame 106 has the same configuration (not shown).

  Specifically, the right side plate 101 fastens the right front vertical frame 102 on the front side and the right rear vertical frame 103 on the rear side, and the left side plate 104 has the left front vertical frame 105 on the front side and the left rear vertical frame on the rear side. 106 is fastened. In the center, a roll paper receiving stay 107, a pre-suction conveyance stay 109, a paper feeding registration roller receiving stay 110, an integrated electrical box lower stay 111, an electrical box lower stay reinforcing plate 112, an electrical box upper stay 113, and the like are arranged. As described above, the right side plate 101 to which the vertical frames 102, 103, 105, and 106 are fastened and the left side plate 104 are sandwiched and fastened.

  The right front vertical frame 102, the right rear vertical frame 103, the left front vertical frame 105, and the left rear vertical frame 106 are substantially U-shaped in cross section, and the bent surfaces of which the tips are further bent are the right side plate 101 and the left side plate 104. Fastening surfaces 102A, 102B, 103A, 103B are formed.

  As described above, the image forming unit 2 and the sheet suction / conveying unit 3 are arranged on the upper side in the apparatus main body 1. Further, a maintenance / recovery mechanism 8 and an ink waste liquid unit (not shown) are arranged on the left and right sides of the sheet suction / conveyance unit 3. It has only a certain margin.

  On the other hand, the roll paper storage unit 4 is disposed on the lower side in the apparatus main body 1, but the apparatus main body is provided by providing flange receivers 32 for holding and rotating the roll paper 30 on the left and right sides of the roll paper 30. The width of the roll paper storage unit 4 is made wider than the upper side of 1.

  Therefore, as shown in FIG. 3, the right side plate 101 and the left side plate 104 include support surfaces 101A and 104A that support the suction conveyance unit 3 on the upper side, and support surfaces 101B and 104B that support the roll paper storage unit on the lower side. The stepped shape is constituted by connecting portions 101D and 104D that connect the suction conveyance unit supporting surfaces 101A and 104A and the roll paper storage unit supporting surfaces 101B and 104B.

  Here, the suction conveyance unit support surfaces (second side plate support surfaces) 101A and 104A and the roll paper storage unit support surfaces (second side plate support surfaces) 101B and 104B include a suction conveyance mechanism and a roll paper conveyance. Although holes and positioning shapes for supporting the mechanisms and the like are provided, it is necessary to ensure a positional relationship with high accuracy in order to prevent paper conveyance skew.

  Therefore, the suction conveyance unit support surfaces (second side plate support surfaces) 101A and 104A and the roll paper storage unit support surfaces (second side plate support surfaces) 101B and 104B are integrated as side plates so that they can be positioned with high accuracy. It ensures accuracy and eliminates the need for position adjustment in the assembly process.

  As described above, by using the suction conveyance unit support surface 101A and the roll paper storage unit support surface 101B as separate support surfaces, the parallelism may be deteriorated due to distortion of the apparatus installation surface or vibration due to operation of the apparatus. There is.

  Therefore, in this structure 100, as shown in FIG. 6, the suction front support frame (second side plate support surface) 101A is also fastened to the right front vertical frame 102 and the right rear vertical frame 103 fastened to the right side plate 101. The holding surfaces (second frame fastening surfaces) 102A and 103A and the roll paper storage unit supporting surface (first side plate supporting surface) 101B are integrally provided with the surfaces (first frame fastening surfaces) 102B and 103B. The left side plate 104 can be fixed three-dimensionally, and the left side plate 104, the left front vertical frame 105, and the left rear vertical frame 106 have the same configuration, thereby improving the rigidity of the structure.

  Further, by making the cross section of the left and right vertical frames 102, 103, 105, 106 into a channel shape, the vertical rigidity of the right side plate 101 and the left side plate 104 can be maintained. 106, the thickness of the right side plate 101 and the left side plate 104 can be reduced for the purpose of weight reduction.

  As shown in FIG. 7, the lower portion of the right side plate 101 is erected in the standing direction of the vertical frame 103 from the bottom surface (lower surface) 101 </ b> C that is a fastening surface with the lower end of the vertical frame 103. The upright surface 101E is substantially U-shaped.

  When the right side plate 101 and the right rear vertical frame 103 are fastened, the surface 103C that is also bent from the right rear vertical frame is fastened to the bottom surface 101C of the right side plate that is bent into a U-shape. Can be. The right side plate 101 and the right front vertical frame 102, and the left side plate 104, the left front vertical frame 105, and the left rear vertical frame 106 have the same configuration, and are provided with installation feet on this double surface, so that a heavy load is applied. Can also prevent deformation.

  Further, between the left and right side plates 101, 104, an electrical box stay 111 of the electrical board housing portion 6 that houses electrical boards is disposed, and by using the electrical box stay 111 as a part of the structure, A lightweight and low-cost structure can be obtained without adding an extra stay member (connecting member).

  Further, the roll paper feed stay 107 of the roll paper storage unit 4 is disposed on the front side on the lower side of the apparatus, and the electrical box lower stay reinforcement plate 112 is disposed on the rear side on the lower side of the apparatus. By increasing the thickness of the reinforcing plate 112 or by using a high-tensile steel plate as the material to increase the rigidity, the device can be mounted on a fork such as a forklift without adding an extra stay member, or the device can be roped It can be hung and transported.

  Thus, in the structure described above, a plurality of vertical frames standing in the vertical direction of the four corners of the apparatus main body and adjacent vertical frames are fastened, and a pair of opposing side plates and a plurality of side plates are connected. The side plate is sandwiched between the vertical frame and the connection member, and is formed continuously from the first side plate fastening surface fastened to the vertical frame and the first side plate fastening surface. And a second side plate fastening surface that protrudes inward from the first side plate fastening surface, is sandwiched between the vertical frame and the connecting member, and fastened to the vertical frame, and the vertical frame is fastened to the first side plate. Since the first frame fastening surface to be fastened to the surface and the second frame fastening surface to be fastened to the second side plate fastening surface are used, the left and right side plates can be used even if the upper and lower left and right side plates are different. Can be firmly tightened and fixed, Surface distortion or even to the vibration by the device operation, it is possible to prevent deformation. Moreover, since the upper side plate fastening surface and the lower side plate fastening surface are made of an integral part, the storage unit support portion on the upper side plate fastening surface and the storage unit support on the lower side plate fastening surface are supported. The position accuracy of the part can be ensured without performing position adjustment or the like in the assembly process.

  Also, by placing the installation foot on the surface where the lower surface of the side plate and the lower surface of the vertical frame are fastened by making the lower surface of the side plate U-shaped and fastening to the lower surface of the vertical frame, , Deformation can be prevented.

  In addition, it is possible to reduce the weight and the cost by sharing a connecting member that accommodates necessary electrical boards as a structure in terms of function.

  Further, by arranging connecting members for storing necessary members at two positions in the front and rear, only the connecting members are made rigid and fastened to the left and right side plates, forklift etc. without adding extra connecting members It is possible to carry the device by placing the device on the fork or by hanging the device on a rope.

  Further, in the image forming apparatus including the above-described structure, even if the upper and lower left and right side plates are different, the storage unit support portion on the upper side plate fastening surface and the storage unit on the lower side plate fastening surface It is possible to easily secure the positional accuracy of the support portion and to achieve high rigidity.

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Image formation part 3 Paper suction conveyance part 4 Roll paper storage part 6 Electrical board storage part 7 Image reading part 100 Structure 101 Right side board 101A Second side board fastening surface 101B of right side board First side board of right side board Fastening surface 101C Right side bottom surface 102 Right front vertical frame 103 Right rear vertical frame 103A Right rear vertical frame second frame fastening surface 103B Right rear vertical frame first frame fastening surface 103C Right rear vertical frame bottom surface (lower surface)
104 Left side plate 104A Second side plate fastening surface 104B of left side plate First side plate fastening surface 105 of left side plate Left front vertical frame 106 Left rear vertical frame 107 Roll feed receiving stay 108 Suction conveyance unit bottom plate 109 Suction conveyance pre-stay 110 Paper registration roller support stay 111 Electrical box lower stay 112 Electrical box lower stay reinforcement plate 113 Electrical box upper stay

Claims (3)

A structure for an image forming apparatus in which a plurality of members having different widths are arranged,
Vertical frames standing up and down at the four corners of the device body;
While fastening adjacent vertical frames, a pair of opposing side plates,
A plurality of connecting members for connecting between the side plates,
The side plate is
A first side plate fastening surface sandwiched between the vertical frame and the connecting member and fastened to the vertical frame;
The second side plate is formed continuously from the first side plate fastening surface, protrudes inward from the first side plate fastening surface, is sandwiched between the vertical frame and the connecting member, and is fastened to the vertical frame. A side plate fastening surface,
The vertical frame is
A first frame fastening surface for fastening with the first side plate fastening surface;
A structure for an image forming apparatus, comprising: a second frame fastening surface fastened to the second side plate fastening surface.   2. The structure for an image forming apparatus according to claim 1, wherein a lower portion of the side plate is formed in a U shape and is fitted to a lower surface of the vertical frame. An image forming apparatus characterized by comprising an image forming apparatus for structure according to claim 1 or 2.

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