1. Field of the Invention
The present invention relates to an ink jet recording apparatus supported by a leg portion, and more particularly, to a large-size ink jet recording apparatus and a method of assembling the ink jet recording apparatus.
2. Description of the Related Art
In recent years, ink jet recording apparatuses are widely used as recording terminals for printers, word processors, personal computers, and the like to obtain colorful prints and to reduce noise in recording. In many cases, a floor surface of a place where the ink jet recording apparatus is installed is not a completely level surface and has microscopic irregularities. When the ink jet recording apparatus is installed on such a floor surface with irregularities, variations occur among reaction forces received by leg portions of the ink jet recording apparatus from the floor surface. Therefore, torsion or distortion is generated with respect to a casing, thereby causing a state where leveling of a print surface (platen) cannot be ensured.
When an image formation is performed in such a state, there is a fear of leading to a reduction in image quality such as color drift. Thus, there are proposed various means for preventing the distortion of the casing due to the irregularities of the installation floor surface. For example, JP 06-70107 A discloses that three leg portions are provided, for substantially receiving a load of an image forming apparatus while abutting a floor surface, thereby preventing distortion of a casing.
JP 06-70107 A discloses that screw-shaped short leg portions are fixed to a bottom portion of the image forming apparatus having a casing shape, and lengths of the leg portions are adjusted so that base end portions of the leg portions are set to be level with one another. However, it is considerably difficult to adjust the lengths of the leg portions such that the base end portions of the leg portions are level with one another. In fact, no matter how the lengths are adjusted, torsion or distortion remains on the casing.
The present invention has been made in view of the above-mentioned problem. It is therefore an object of the present invention to provide an ink jet recording apparatus and a method of assembling the ink jet recording apparatus in which deformation absorbing members are interposed in joint portions between an ink jet recording apparatus main body and a leg portion, thereby making it possible to mitigate effects of irregularities, inclination, and the like on an installation floor surface, to obtain an excellent image formed without distortion or image failure.
To achieve the object described above, according to the present invention, an ink jet recording apparatus, including: an ink jet recording apparatus main body; and a leg portion, is characterized in that a deformation absorbing member is interposed in a joint portion between the ink jet recording apparatus main body and the leg portion.
Further, according to one aspect of the present invention, the deformation absorbing member includes: a rectangular board portion to be fixed to one of the ink jet recording apparatus main body and the leg portion; and flexible cut and raised portions, each of which is cut and raised from each of four corners of the board portion and has an L-shaped cross section, to be fixed to another of the ink jet recording apparatus main body and the leg portion.
Further, according to another aspect of the present invention, the deformation absorbing member includes: a first board member to be fixed to a side of the leg portion; a second board member to be fixed to a side of the ink jet recording apparatus main body; and a plurality of spring members arranged between the first board member and the second board member; and the first board member and the second board member are arranged such that an interval between each other can be modified.
Further, according to a further aspect of the present invention, the deformation absorbing member includes: a rectangular board portion to be fixed to one of the ink jet recording apparatus main body and the leg portion; and flexible step portions, each having an L-shaped cross section and being formed in a step shape by bending each of ends on right and left of the board portion, to be fixed to another of the ink jet recording apparatus main body and the leg portion.
Further, according to the present invention, it is characterized in that the deformation absorbing member has a positioning pin on a surface opposed to the ink jet recording apparatus main body.
Further, according to the present invention, the deformation absorbing member may employ a spring member formed of SUS 301, SUS 303, or the like.
Further, according to the present invention, a method of assembling an ink jet recording apparatus including: an ink jet recording apparatus main body; and a leg portion, is characterized by assembling with a deformation absorbing member being interposed in a joint portion between the ink jet recording apparatus main body and the leg portion.
According to the present invention, in the ink jet recording apparatus including the ink jet recording apparatus main body and the leg portion, the deformation absorbing members are interposed in the joint portions between the ink jet recording apparatus main body and the leg portion. Therefore, the deformation absorbing members mitigate effects of irregularities, inclination, and the like of the installation floor surface to level the bottom surface of the ink jet recording apparatus main body, and thus, leveling of the print surface in the ink jet recording apparatus main body is ensured, thereby making it possible to print an excellent image without image distortion or image failure. Further, in a manufacturing process, even in a case where the ink jet recording apparatus main body, which is manufactured on a dedicated jig and is packed separately from the leg portion to be shipped, is assembled with the leg portion at a customer site, there occurs no variation in leveling of the print surface due to differences in level among leg portions.
Further, according to the present invention, the deformation absorbing member is composed of a rectangular board portion to be fixed to a leg portion side and flexible cut and raised portions, each having an L-shaped cross section, cut and raised from four corners, respectively, of the board portion. Therefore, the flexible cut and raised portions each having the L-shaped cross section absorb irregularities, inclination, and the like of the installation floor surface, thereby leveling a bottom surface of the ink jet recording apparatus main body. As a result, leveling of the print surface in the ink jet recording apparatus main body is ensured, making it possible to print the excellent image without image distortion or image failure.
Further, according to the present invention, the deformation absorbing member may be composed of a first board member to be fixed to the leg portion side, a second board member to be fixed to the ink jet recording apparatus main body side, and a plurality of spring members arranged between the first board member and the second board member. The first board member and the second board member are arranged such that an interval therebetween can be modified. Accordingly, the plurality of spring members mitigate effects of irregularities, inclination, and the like of the installation floor surface to ensure the leveling of the print surface in the ink jet recording apparatus main body, thereby making it possible to print the excellent image without image distortion or image failure.
According to the present invention, the deformation absorbing member may be composed of a rectangular board portion to be fixed to the leg portion side and flexible step portions, each having an L-shaped cross section and formed in a step shape by bending each of ends on the right and left of the board portion, to be fixed to the ink jet recording apparatus main body side. Accordingly, the flexible step portions each having the L shaped cross section absorb irregularities, inclination, or the like of the installation floor surface to ensure the leveling of the print surface in the ink jet recording apparatus main body, thereby making it possible to print the excellent image without image distortion or image failure.
Further, according to the present invention, the deformation absorbing member includes positioning pins on a surface to be opposed to the ink jet recording apparatus main body. Therefore, at the time of assembly, it is possible to accurately set positions of the apparatus main body and the leg portion to be assembled.
Further, according to the present invention, in a method of assembling the ink jet recording apparatus including the ink jet recording apparatus main body and the leg portion, the deformation absorbing member is interposed in the joint portion between the ink jet recording apparatus main body and the leg portion to be assembled, so even if the apparatus main body and the leg portion are separately shipped and assembled at a customer site, it is possible to ensure the leveling of the print surface without performing adjustment for each product by employing a leveler or the like. Accordingly, products can be shipped in a small package, thereby making it possible to reduce transportation cost.
Hereinafter, the present invention will be described with reference to figures showing a first embodiment of the present invention.
Further, in a direction perpendicular to a conveying direction of the carriage 21, as transport means, a pair of transport rollers 28 and 29 are provided along a direction of the guide rails 24a and 24b. The transport rollers 28 and 29 serve for transporting a medium to which recording is effected toward a lower portion of the carriage 21 in the direction perpendicular to the conveying direction of the carriage 21.
The transport rollers 28 and 29 transport the medium to which the recording is effected while the carriage 21 is scanned in a direction perpendicular to a transport direction, whereby the ink jet head 20 prints an image or the like.
Further, to each of the joint portions between the ink jet recording apparatus main body 11 and the leg portion 12, that is, top portions of the support portions 13, a deformation (deformable) absorbing member 30 is fixed by bolts 31 as shown in
Next, a process of assembling the ink jet recording apparatus main body 11 and the leg portion 12 of the ink jet recording apparatus 10 structured as described above will be described. First, the deformation absorbing members 30 are fixed to the two support portions 13 of the leg portion 12 with the bolts 31 (refer to
The second board member 72 assumes a box shape having an open lower surface and has side walls each having a bolt 78 threaded about a central portion thereof, for regulating strokes. Tips of the bolts 78 are loosely inserted into the long holes 75 of the first board member 71, respectively. On an upper surface of the second board member 72, positioning pins 79a and 79b are provided upright. Further, the second board member 72 is provided with operation holes 80, through which heads of bolts can pass, formed in the vicinity of the positioning pins 79a and 79b. The first board member 71 and the second board member 72 constructed as described above, engage with each other while being supported by the spring members 73, and strokes are regulated by means of the long holes 75 and the bolts 78. Accordingly, an interval between the board members can be modified within a predetermined range.
Note that, in the embodiments described above, each of the board portions 32, 91, and 101 is attached to the leg portion 12 side, and each of the flexible cut and raised portion 33 and the flexible step portions 92 and 102 having the L-shaped cross section is attached to the ink jet recording apparatus main body 11 side. On the other hand, however, it is also possible to attach the board portion 32, 91, or 101 to the ink jet recording main body 11 side, and the flexible cut and raised portion 33 or the flexible step portion 92 or 102 having the L-shaped cross section to the leg portion 12 side.
Further, even with an ink jet recording apparatus having the ink jet recording apparatus main body and the leg portion formed in a single body, as long as the deformation absorbing member is interposed in advance in the joint portion between the ink jet recording apparatus main body and the leg portion, it is possible to obtain the same effect.
Number | Date | Country | Kind |
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2006-016706 | Jan 2006 | JP | national |
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