BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a building board, a designed surface of which is printed, and a printing method used for the board.
2. Description of the Prior Art
A joint method by which building boards are jointed according to shiplap joint will be explained, referring to FIG. 7 and FIG. 8. FIG. 7 is a perspective view showing a jointing state in which right and left building boards are jointed according to the joint method by shiplap joint. As shown in the drawing, according to the joint method by shiplap joint, a fastening member 72 is locked to lower shiplap portions both of which are located over an abutting joint portion 71 formed with abutting building boards 100A and 100B, and the fastening member 72 is fixed on a furring strip 73 with nails.
FIG. 8 is a schematic sectional view showing a jointing state by shiplap joint. As shown in the drawing, a jointing state by shiplap joint in which jointing of right and left building boards is realized by putting the upper shiplap portion 120B formed in the end portion of the left-side of the building board 100B disposed on the right side on the lower shiplap portion 110A formed in the end portion of the right-side of the building board 100A disposed on the left side. Moreover, a caulking compound 81 is provided to the lower shiplap portion 110A beforehand, and is pressed by the upper shiplap portion 120B so as to function as a dam against rainwater which enters from the abutting joint portion 71. Accordingly, water is prevented from leaking to the back side (the inside of a house) of the building board after construction.
As all operations necessary for butt jointing in which a sealing material is applied to an abutting joint portion are not required at all by the above-described shiplap jointing, the workability is increased, and, at the same time, the appearance after construction is greatly improved. Obviously, neither spoiling of the appearance due to secular changes in the sealing material nor water leak based on deterioration of the material occurs.
FIG. 9A and FIG. 9B are views, each explaining a construction method of building boards as an external wall. When building boards 100A, 100B, and 100C, all of which have shiplap portion in every direction for the joint method by shiplap joint, are fastened to an external wall as shown in FIG. 9A, the building board 100A disposed on the left side is fastened to a column (structural building frame) in the first place, and, then, the building board 100B disposed on the right side of the board 100A is arranged in the jointing state by shiplap joint (a state in which the upper shiplap portion 120B formed in the left side of the building board 100B is put on the lower shiplap portion 110A formed in the right side of the building board 100A), and is fastened to the column. Subsequently, the building board 100C disposed over the building board 100A is arranged in the jointing state by shiplap joint (a state in which the upper shiplap portion 120C formed in the lower side of the building board 100C is put on the lower shiplap portion 110A formed in the upper-side of the building board 100A), and is fastened to the column. A fastening member as shown in FIG. 7 is used for the fastening.
FIG. 9B is a view showing a state in which the three building boards 100A, 100B, and 100C are jointed. The fastening members (not show in the drawing) are fixed to the column for arranging the building boards. However, in the case where the fastening member is fixed to the column at the upper end of abutting portion 72 between the two building boards 100A and 100B respectively arranged on the right and left sides, the fastening member is fixed approximately horizontally to the column while correcting pattern shifts between the right and left building boards and the like.
A gap between the building boards in the abutting joint portion 71 will be explained, referring to FIG. 10A and FIG. 10B. The designed surfaces of the building boards 100A and 100B include pattern convex portions 101A and 101B, and joint portions 102A and 102B. FIG. 10A is a view showing a case in which the distance between the abutting two building boards in the abutting joint portion 71 is equal to a designed value. The pattern convex portions on the right and left building boards are physically divided into parts in the abutting joint portion 71. However, when the patterns on the building boards are designed in such a way that a part of the pattern convex portion 101A on the building board 100A disposed on the left side and a part of the pattern convex portion 101B on the building board 100B disposed on the right side form one pattern convex portion, the pattern continuity between the right and left building boards may be secured in appearances.
FIG. 10B is a view showing a constructed state in which the distance between the two abutting building boards in the abutting portion 71 becomes larger than the designed value, and the two building boards are mutually shifted by a distance DELTA d in an up and down direction, based on errors in the cutting size and the like. In this case, a feeling of pattern mismatching (a feeling of wrongness) is caused because the pattern continuity between the pattern convex portions cannot be secured in appearances as shown in FIG. 10A.
Incidentally, in order to secure the pattern continuity between the right and left building boards, it is required to consider how to color both of the pattern convex portions, other than how to continuously form both of the pattern convex portions, which are physical shapes of the designed surfaces of the building boards, on the right and left building boards as described above. Japanese Patent Laid-Open No. 3284037 has disclosed a painting technology for coloring patterns as a method by which pattern continuity between abutting building boards is realized.
Generally, there is an apprehension that the width of a abutting joint portion formed between abutting building boards in a ceramics system (in a cement system) becomes different from a designed value when the building board is used on the external wall of a building, because the building board is by no means manufactured without dimensional errors. Accordingly, defective construction is caused, and pattern shifts between right and left building boards is brought in appearances. Moreover, the width of an abutting joint portion is changed by secular changes after construction, that is, by repeated expansion and contraction of an building board in some cases to cause pattern shifts between right and left building boards, and the appearance is largely spoiled.
SUMMARY OF THE INVENTION
An object of the present invention is a configuration in which a feeling of wrongness is not caused by securing pattern continuity between pattern convex portions in appearances even when the widths of abutting joint portions formed between abutting building boards are different from each other by defective construction and secular changes after construction, and shape shifts between pattern convex portions are caused.
According to the present invention, in a building board having a designed surface with pattern convex portions, and upper and lower shiplap portions, both of which are formed in the end portion of the designed surface, a printing extension portion is printed in the lower shiplap portion in such a way that the extension portion and the above-described pattern convex portion are continuously formed.
According to the present invention, a feeling of wrongness is not caused in appearances by securing pattern continuity between pattern convex portions of two abutting building boards even when the width of an abutting joint portion formed between the abutting building boards is large, and a position shift between the boards is caused.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1A through FIG. 1F are views, each showing an example of a printing extension portion of a lower shiplap portion on a building board according to the present invention;
FIG. 2A through FIG. 2C are views, each showing an example of the printing extension portion of the lower shiplap portion on the building board according to the present invention;
FIG. 3A through FIG. 3D are views, each showing another example of the printing extension portion of the lower shiplap portion on the building board according to the present invention;
FIG. 4A and FIG. 4B are views, each showing a method by which image data for the printing extension portion in the lower shiplap portion on the building board according to the present invention is generated;
FIG. 5A and FIG. 5B are views, each showing a method by which image data for the printing extension portion in the lower shiplap portion on the building board according to the present invention is generated;
FIG. 6 is a view showing the details of the printing extension portion in the lower shiplap portion on the building board according to the present invention;
FIG. 7 is a perspective view showing a jointing state in which right and left building boards are jointed according to a joint method by shiplap joint;
FIG. 8 is a schematic sectional view showing a joint method by shiplap joint;
FIG. 9A and FIG. 9B are views, each explaining a construction method of building boards as an external wall; and
FIG. 10A and FIG. 10B are views, each explaining an abutting joint portion between the building boards.
DETAILED DESCRIPTION OF THE INVENTION
Examples of a building board according to the present invention will be explained, referring to FIG. 1A through FIG. 3D. According to the present example, a similar pattern and color to a part of the pattern and color on a pattern convex portion 101A is printed on a lower shiplap portion 110A of a building board 100A. Here, a printed portion on the lower shiplap portion 110A is called a printing extension portion 10. When it is assumed that the length of the lower shiplap portion 110A, which is measured along the printing direction of the building board 100A, is F, and the length of the printing extension portion 10 in the portion 110A is f, f≦F. It is also assumed that the width of the pattern convex portion 101A is H, and the width of the printing extension portion 10 of the portion 110A is h.
In the example shown in FIG. 1A, the central axis of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A coincides with that of the pattern convex portion 101A on the building board 100A, and the both portions have the same width. That is, h=H. Accordingly, one edge of the printing extension portion 10 and the corresponding one edge of the pattern convex portion 101A are on the same straight line, and the other edge of the portion 10 and the other edge of the portion 101A are on the same straight line.
FIG. 1B is a view showing a state in which another building board 100B is abutted to the right side of the building board 100A shown in FIG. 1A. In this case, it is assumed that the building board 100B on the right side is arranged so as to be shifted from the board 100A upward by a distance DELTA d. A pattern convex portion 101B of the building board 100B on the right side is shifted by a distance DELTA d upward from the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side. That is, in this example, the shift amount of DELTA d between the two building boards is exactly equal to the shift amount between the pattern convex portion 101B on the building board 100B on the right side and the printing extension portion 10 of the lower shiplap portion 110A in the building board 100A on the left side.
In the example shown in FIG. 1C, the central axis of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A coincides with that of the pattern convex portion 101A, but the widths of the both portions are different from each other. That is, h>H. It is assumed that h=H+2p. One edge of the printing extension portion 10 is shifted by a distance p outward from the corresponding edge of the pattern convex portion 101A, and the other edge of the portion 10 is shifted by a distance p outward from that of the portion 101A. FIG. 1D is a view showing a state in which another building board 100B is abutted to the right side of the building board 100A shown in FIG. 1C. In this case, it is assumed that the building board 100B on the right side is arranged so as to be shifted from the board 100A upward by a distance DELTA d. The upper edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by a DELTA d−p from the upper edge of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side. This shift amount of DELTA d−p may become sufficiently small not to cause the feeling of wrongness in appearances. However, the lower edge of the pattern convex portion 101B of the building board 100B on the right side is shifted upward by a DELTA d+p from the lower edge of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side. This shift amount of DELTA d+p may be larger than the shift amount of DELTA d between the two building boards to cause the feeling of wrongness in appearances.
In the example shown in FIG. 1E, the central axis of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A coincides with that of the pattern convex portion 101A, but the widths of the both portions are different from each other. That is, h<H. It is assumed that h=H−2p. One edge of the printing extension portion 10 is shifted inward by a distance p from the corresponding edge of the pattern convex portion 101A, and the other edge of the portion 10 is shifted by a distance p inward from that of the portion 101A. FIG. 1F is a view showing a state in which another building board 100B is abutted to the right side of the building board 100A shown in FIG. 1E. In this case, it is assumed that the building board 100B on the right side is arranged so as to be shifted from the board 100A upward by a distance DELTA d. The lower edge of the pattern convex portion 101B of the building board 100B on the right side is shifted upward by a DELTA d−p from the lower edge of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side. This shift amount of DELTA d−p may become sufficiently small not to cause the feeling of wrongness in appearances. However, the upper edge of the pattern convex portion 101B of the building board 100B on the right side is shifted upward by a DELTA d+p from the upper edge of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side. This shift amount of DELTA d+p may be larger than the shift amount of DELTA d between the two building boards to cause the feeling of wrongness in appearances.
In the example shown in FIG. 2A, the central axis of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A is shifted by a distance p upward from that of the pattern convex portion 101A on the building board 100A, but the both portions have the same width. That is, h=H. One edge of the printing extension portion 10 is shifted upward by a distance p from the corresponding one edge of the pattern convex portion 101A, and the other edge of the portion 10 is shifted by a distance p upward from the other edge of the pattern convex portion 101A.
FIG. 2B is a view showing a state in which another building board 100B is abutted to the right side of the building board 100A shown in FIG. 2A. In this case, it is assumed that the building board 100B on the right side is arranged so as to be shifted by a distance DELTA d upward from the board 100A. One edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by a distance of DELTA d−p upward from the corresponding one edge of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side, and the other edge of the portion 101B is shifted by a distance of DELTA d−p upward from that of the printing extension portion 10 of the portion 110A on the board 100A on the left side. This shift amount of DELTA d−p may become sufficiently small not to cause the feeling of wrongness in appearances.
FIG. 2C is a view showing a state in which another building board 100B is abutted to the right side of the building board 100A shown in FIG. 2A. In this case, it is assumed that the building board 100B on the right side is arranged so as to be shifted by a distance DELTA d downward from the board 100A. One edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by a distance of DELTA d+p downward from the corresponding one edge of the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side, and the other edge of the portion 101B is shifted by a distance of DELTA d+p downward from that of the printing extension portion 10 of the portion 110A on the board 100A on the left side. This shift amount of DELTA d+p may become larger than the shift amount of DELTA d between the two building boards to have a possibility that the feeling of wrongness in appearances is caused.
Other examples of a building board according to the present invention will be explained, referring to FIG. 3A through FIG. 3D. According to the present example, the lower shiplap portion 110A on the building board 100A is printed as an extended part of the pattern convex portion 101A as shown in FIG. 3A. Here, a printed portion on the lower shiplap portion 110A is called a printing extension portion 10. The printing extension portion 10 includes a center portion 11 having the same pattern and color as those of a part of the pattern convex portion 101A, and auxiliary portions 12 and 13 at the both sides. The brightness of the color of the auxiliary portion 12 and 13 are reduced to, for example, half in that of the pattern convex portion.
When it is assumed that the length of the lower shiplap portion 110A, which is measured along the printing direction of the building board 100A, is F, and the length of the printing extension portion 10 in the portion 110A is f, f≦F. It is also assumed that the width of the pattern convex portion 101A is H, and the width of the printing extension portion 10 of the lower shiplap portion 110A is h. The width of the printing extension portion 10 is H+p, that of the center portion 11 is H−p, and the width for each of the auxiliary portions 12 and 13 is p. The central axis of the printing extension portion 10 is shifted by a distance p/2 upward from that of the pattern convex portion 101A.
The upper edge of the printing extension portion 10, that is, the upper edge of the upper auxiliary portion 12 is shifted by a distance p upward from the upper edge of the pattern convex portion 101A. The lower edge of the printing extension portion 10, that is, the lower edge of the lower auxiliary portion 13 coincides with the lower edge of the pattern convex portion 101A. The lower edge of the center portion 11 is shifted by a distance p upward from the lower edge of the pattern convex portion 101A.
FIG. 3B is a view showing a state in which another building board 100B is abutted to the right side of the building board 100A shown in FIG. 3A. In this case, it is assumed that the building board 100B on the right side is arranged so as to be shifted by a distance DELTA d upward from the board 100A. The upper edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by DELTA d upward from the upper edge of the center portion 11 in the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side. However, the auxiliary portion 12 is arranged between the upper edge of the pattern convex portion 100B of the building board 100B on the right side and the upper edge of the center portion 11 in the printing extension portion 10 of the building board 100A on the left side. The upper edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by DELTA d−p upward from the upper edge of the auxiliary portion 12 in the printing extension portion 10 on the building board 100A on the left side. This shift amount of DELTA d−p may become sufficiently small, and, moreover, the pattern convex portion 101B of the building board 100B and the auxiliary portion 12 have the same hue and are different only in their brightness so as to cause a state in which the brightness of the auxiliary portion 12 is slightly reduced for printing. Accordingly, a shadow effect by blurring is realized, and the feeling of wrongness in appearances is not caused. The lower edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by DELTA d−p upward from the lower edge of the center portion 11 in the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side. This shift amount of DELTA d−p may become sufficiently small, and, moreover, the building board 100B and the auxiliary portion 13 have the same hue and are different only in their brightness so as to cause a state in which the brightness of the auxiliary portion 13 is slightly reduced for printing. Accordingly, a shadow effect by blurring is realized, and the feeling of wrongness in appearances is not caused.
FIG. 3C is a view showing a state in which another building board 100B is abutted to the right side of the building board 100A shown in FIG. 3A. In this case, it is assumed that the building board 100B on the right side is arranged so as to be shifted by a distance DELTA d downward from the board 100A. The upper edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by DELTA d+p downward from the upper edge of the auxiliary portion 12 in the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side, and by DELTA d downward from the upper edge of the center portion 11 in the printing extension portion 10. The lower edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by DELTA d+p downward from the lower edge of the center portion 11 in the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side, and by DELTA d downward from the lower edge of the auxiliary portion 13 in the printing extension portion 10 of the lower shiplap portion 110A. As the shadow effect by blurring is similarly realized on the auxiliary portions 12 and 13, the feeling of wrongness caused by the shift amount of DELTA d is remarkably reduced in comparison with the case of FIG. 2C.
FIG. 3D is a view showing a state in which another building board 100B is abutted to the right side of the building board 100A shown in FIG. 3A. In this case, it is assumed that the central axis of the pattern convex portion 101B of the building board 100B on the right side is arranged so as to coincide with the central axis of the pattern convex portion 101A on the building board 100A on the left side. The upper edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by DELTA p downward from the upper edge of the auxiliary portion 12 in the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side, but coincides with the upper edge of the center portion 11 in the printing extension portion 10 of the lower shiplap portion 110A. The lower edge of the pattern convex portion 101B of the building board 100B on the right side is shifted by DELTA p downward from the lower edge of the center portion 11 in the printing extension portion 10 of the lower shiplap portion 110A on the building board 100A on the left side, but coincides with the lower edge of the auxiliary portion 13 in the printing extension portion 10 of the lower shiplap portion 110A. As the shadow effect by blurring is similarly realized on the auxiliary portions 12 and 13, the feeling of wrongness caused by the shift amount of DELTA p is remarkably reduced.
As the auxiliary portions have been provided at the both sides of the center portion in the printing extension portion of the lower shiplap portion in this example as described above, the feeling of wrongness in appearances caused by a shift amount by construction between abutting building boards is effectively reduced.
Subsequently, a method for printing a building board according to the present invention, more particularly, a method for printing a printing extension portion in a shiplap portion will be explained, referring to FIG. 4A through FIG. 5B. In this example, a pattern and a color for a printing extension portion are made, using image processing software for a computer, and they are converted into print data, and are supplied to a printing device. Here, a method by which an image for a printing extension portion is made on a screen of a display device connected to a computer will be explained. Here, the computer has stored image data for patterns and colors of a pattern convex portion on an building board beforehand.
As shown in FIG. 4A, an image in a right end portion of the building board 100A arranged on the left side, and an image in a left end portion of the building board 100B arranged on the right side are displayed on a screen 400 of a display device. Then, the two images are jointed through a boundary line L-L as shown in FIG. 4B in such away that the pattern convex portion 101A on the building board 100A on the left side coincides with the pattern convex portion 101B on the building board 100B on the right side. Subsequently, a portion 401 corresponding to a part within a range of, for example, 2 mm from the boundary line L-L is cut out from the pattern convex portion 101A on the building board 100A on the left side, and a portion 402 corresponding to a part within a range of, for example, 1 mm from the boundary line L-L is cut out from the pattern convex portion 101B on the building board 100B on the right side.
The reason that the cut portion 401 is largely cut out is that the lower shiplap portion 110A is an extended portion of the designed surface of the building board, and a centerpiece for extension printing of the pattern convex portion 101A. Moreover, the dimension of the cut portion 402 is set shorter in order to prevent a state in which an influence on the side of the pattern convex portion 101B cannot be neglected when the width of an abutting joint portion is extremely extended (though the probability that the state is caused is low). Obviously, only the cut portion 401 may be cut out.
The two images 401 and 402, which have been cut out, are jointed as shown in FIG. 5A. As shown in FIG. 5B, added regions 403 and 404, each of which has the same width as that of the rectangular image and a height of p (for example, 1 mm), are respectively provided on and under rectangular images formed by jointing. Then, there is executed image processing by which an image in the rectangular region with a width of p from the top of an image (401+402) is cut out and is pasted on the added region 403; an image in the rectangular region with a width of p from the bottom of the image (401+402) is cut out, and is pasted on the added region 404; and the brightness of each of the pasted images is reduced to half. Here, there is formed a composite image 405 which expresses the image (401+402) expressing the extended part of the right end portion of the building board 100A and the extended part of the left end portion of the building board 100B; and the extended parts of the top and bottom end portions. The image in the printing extension portion, which has been obtained above, is converted from a red green blue code into a cyan magenta yellow black one, and, then, is supplied to the printing device.
FIG. 6 is a view showing the printing extension portion which has been printed according to the printing method which has been explained, referring to FIG. 5A and FIG. 5B. The printing extension portion includes the center portion 11, and the auxiliary portions 12 and 13, and the center portion 11 includes a left side portion 111 and a right side portion 112. The pattern and color of the left side portion 111 and those of the image in a region with the same area in the abutting pattern convex portion 101A are the same, and the pattern and color of the right side portion 112 and those of the image in a region with the same area in the abutting pattern convex portion 101B are the same.
It will be appreciated by persons skilled in the art that the invention is not limited to the above-described examples and various modifications and applications may be made within the scope of the invention described in the claims though examples according to the present invention have been explained above.
Patent Application
20070193160
