Graph paper

Abstract

This product provides graph paper that can contribute to drawing graphs and other diagrams faster, more accurately, and with a more natural feel. [Solution] The leftmost and lowest intersection point 1000 of the multiple intersection points of the horizontal dividing line 100 and the vertical dividing line 200 is not in the same location as the lower left corner 2000 of the grid area 20, but is shifted above the bottom line 500 of the grid area 20, and is shifted to the right of the leftmost line 600 of the grid area 20.

Description

Technical Field

[0001] The present invention relates to graph paper as a writing medium on which characters, figures and the like can be written.

Background Art

[0002] Graph paper is used for drawing graphs such as line graphs, bar graphs, histograms, and plotting scatter diagrams. Common graph paper has a plain blank margin area on the outer periphery, and inside thereof is a rectangular grid area drawn with equally spaced horizontal and vertical parallel lines with a thickness and color that do not interfere with writing such as graphs. A user can draw a graph or the like in the grid area with reference to the grid.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In classes at high schools and universities, students are instructed to fit graphs and the like within the grid area of graph paper, and such a drawing method has become a de facto standard (see, for example, page 266 of the high school industrial department textbook *Industrial Information Mathematics* published by Jitsugyo Kyoiku Shuppan, and "How to Draw Graphs" on the Tohoku University Natural Science Comprehensive Experiment web page). There is a blank margin area outside the grid area of graph paper, but it is required that axis names, scale values and the like are described in the grid area, rather than in the blank margin area. However, in conventional graph paper, dividing lines described later do not form equally spaced divisions starting from the origin of the graph that a user intends to draw, so that many students and working people spend more time, make mistakes, or feel discomfort when drawing graphs.

[0004] An object of the present invention is to provide graph paper that can contribute to drawing graphs and the like faster, more accurately and without discomfort.

Means for Solving the Problems

[0005] According to an aspect of the present invention, a rectangular grid area drawn by a plurality of vertical lines arranged in the left-right direction and a plurality of horizontal lines arranged in the up-down direction, and a margin area provided on an outer periphery of the grid area, the plurality of vertical lines include a plurality of first vertical lines drawn with a line thickness a, and a plurality of vertical dividing lines drawn with a line thickness b (a < b), and between two adjacent vertical dividing lines among the plurality of vertical dividing lines, a part of the plurality of first vertical lines is respectively positioned, the plurality of horizontal lines include a plurality of first horizontal lines drawn with a line thickness a, and a plurality of horizontal dividing lines drawn with a line thickness b (a < b), and between two adjacent horizontal dividing lines among the plurality of horizontal dividing lines, a part of the plurality of first horizontal lines is respectively positioned, a boundary between a left end of the grid area and the margin area is defined by a leftmost line positioned most to the left among the plurality of vertical lines, a boundary between a lower end of the grid area and the margin area is defined by a lowermost line positioned most to the bottom among the plurality of horizontal lines, an intersection of a first vertical dividing line positioned most to the left among the plurality of vertical dividing lines and a first horizontal dividing line positioned most to the bottom among the plurality of horizontal dividing lines is positioned above and to the right of an intersection of the leftmost line and the lowermost line, a distance between the first vertical dividing line and the leftmost line is shorter than a distance between a second vertical dividing line positioned second from the left among the plurality of vertical dividing lines and the first vertical dividing line, a distance between the first horizontal dividing line and the lowermost line is shorter than a distance between a second horizontal dividing line positioned second from the bottom among the plurality of horizontal dividing lines and the first horizontal dividing line. A graph paper is provided. [Effect of the Invention]

[0006] In the graph paper of the present invention, the intersection point of the leftmost first vertical dividing line among the multiple vertical dividing lines and the bottommost first horizontal dividing line among the multiple horizontal dividing lines is not in the same place as the bottom left corner of the grid area, but is shifted above the bottom line of the grid area and to the right of the leftmost line of the grid area. Therefore, even when the user draws the vertical and horizontal axes of the graph with the above intersection point as the origin, space can be secured to the left of the vertical axis and below the horizontal axis of the graph. In other words, the user can draw the vertical axis of the graph along the leftmost first vertical dividing line and the horizontal axis of the graph along the bottommost first horizontal dividing line. This allows the user to intuitively draw the axes of the graph. Even in this case, space can be secured to the left of the vertical axis of the graph drawn in the grid area and space can be secured below the horizontal axis of the graph. Therefore, the user can easily write axis names and scale values ​​in these spaces. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic diagram illustrating the graph paper 1 of this embodiment. [Figure 2] Figure 2 is a schematic diagram showing an enlarged portion of graph paper 1. [Figure 3] Figure 3 is a diagram equivalent to Figure 2, showing a configuration in which the bottom line 500 and the leftmost line 600 are drawn as straight lines thicker than thickness a. [Figure 4] Figure 4 is a diagram equivalent to Figure 2, showing a configuration in which a scale with a "0" mark indicating the origin and scales along the first horizontal dividing line 101 and the first vertical dividing line 201 are provided. [Modes for carrying out the invention]

[0008] An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows graph paper 1, which is a writing medium according to the present embodiment. The graph paper 1 can be used as a single sheet of writing paper. Needless to say, even if a plurality of sheets of the graph paper 1 are bound so as to be peelable like general memo paper, or each page of the graph paper 1 may be bound so as not to be detached like in general notebooks, such as perfect-bound notebooks, thread-bound notebooks, and ring notebooks.

[0009] As shown in FIG. 1, on the surface of the graph paper 1, there is a plain blank region 10 at an outer peripheral portion, and inside thereof, there is a rectangular grid region 20 drawn by a plurality of horizontal lines 20a arranged at equal intervals in a vertical direction and a plurality of vertical lines 20b arranged at equal intervals in a horizontal direction. The plurality of horizontal lines 20a and the plurality of vertical lines 20b are drawn as straight lines having a thickness a. A grid formed by two adjacent horizontal lines 20a and two adjacent vertical lines 20b is the smallest grid (referred to as a unit grid) drawn in the grid region 20. The plurality of horizontal lines 20a are an example of the first horizontal lines of the present invention, and the plurality of vertical lines 20b are an example of the first vertical lines of the present invention.

[0010] In the grid region 20, a plurality of horizontal dividing lines 100 and a plurality of vertical dividing lines 200 having a thickness b (a < b) that divide the unit grids into groups each including a plurality of unit grids are drawn. A grid formed by two adjacent horizontal dividing lines 100 and two adjacent vertical dividing lines 200 includes a plurality of unit grids. Among the plurality of horizontal dividing lines 100, the horizontal dividing line 100 located at the lowermost position is referred to as a first horizontal dividing line 101, and the horizontal dividing line 100 located at the second position from the bottom is referred to as a second horizontal dividing line 102. Among the plurality of vertical dividing lines 200, the vertical dividing line 200 located at the leftmost position is referred to as a first vertical dividing line 201, and the vertical dividing line 200 located at the second position from the left is referred to as a second vertical dividing line 202. Note that the plurality of horizontal lines 20a and the plurality of horizontal dividing lines 100 correspond to the "plurality of horizontal lines" of the present invention. The plurality of vertical lines 20b and the plurality of vertical dividing lines 200 correspond to the "plurality of vertical lines" of the present invention.

[0011] The horizontal line 20a located at the bottom of the grid area 20 is called the bottom line 500 (see Figure 2). The vertical line 20b located at the leftmost position of the grid area 20 is called the leftmost line 600 (see Figure 2). The bottom line 500 and the leftmost line 600 form part of the boundary line between the grid area 20 and the margin area 10. In this embodiment, both the bottom line 500 and the leftmost line 600 are drawn as straight lines of thickness a. The intersection of the bottom line 500 and the leftmost line 600 is located at the lower left edge of the grid area 20, and in this specification, it is referred to as the lower left corner 2000.

[0012] As shown in Figure 2, the intersection point 1000 of the first horizontal dividing line 101 and the first vertical dividing line 201 is not in the same location as the lower left corner 2000 of the grid area 20, but is shifted above the bottom line 500 of the grid area 20, and also shifted to the right of the leftmost line 600 of the grid area 20. Furthermore, the distance between the bottom line 500 and the first horizontal dividing line 101 is shorter than the distance between the first horizontal dividing line 101 and the second horizontal dividing line 102. The distance between the leftmost line 600 and the first vertical dividing line 201 is shorter than the distance between the first vertical dividing line 201 and the second vertical dividing line 202.

[0013] <Effects of the Embodiment> In conventional graph paper, the origin is the bottom-left corner of the grid area, and multiple dividing lines that separate multiple grid squares are drawn horizontally and vertically at equal intervals with a thickness and color more noticeable than the smallest grid line. In conventional graph paper, the intersection of the bottommost dividing line and the leftmost dividing line coincides with the bottom-left corner of the grid area. Also, in conventional graph paper, the leftmost dividing line and the bottommost dividing line serve as the boundary between the grid area and the margin area. Therefore, the distance between the boundary between the grid area and the margin area and the dividing line closest to the boundary is equal to the distance between two adjacent dividing lines. Such dividing lines in conventional graph paper are not always suitable when the entire graph must fit within the grid area. The reasons for this will be explained below.

[0014] When drawing a graph, a vertical and horizontal axis are essential. The axes must be drawn around the outer perimeter of the graph, and the axis names and scale values ​​must be written outside of them. In such cases, the vertical and horizontal axes must be redrawn within a different grid area, separate from the dividing lines, to create space for the axis names and scale values. This means that the equally spaced dividing lines do not function effectively as a guide when drawing the vertical and horizontal axes of the graph.

[0015] In contrast, in this embodiment, the leftmost and lowest intersection point 1000 of the multiple intersection points of the horizontal dividing line 100 and the vertical dividing line 200 is not located at the same place as the lower left corner 2000 of the grid area 20, but is shifted above the bottom line 500 of the grid area 20 and to the right of the leftmost line 600 of the grid area 20. Therefore, even when the user draws the vertical and horizontal axes of the graph with intersection point 1000 as the origin, space can be secured to the left of the vertical axis and below the horizontal axis of the graph. In other words, the user can draw the vertical axis of the graph along the leftmost vertical dividing line 200 and the horizontal axis of the graph along the bottommost horizontal dividing line 100. This allows the user to intuitively draw the axes of the graph. Even in this case, space can be secured to the left of the vertical axis of the graph drawn in the grid area 20, and space can be secured below the horizontal axis of the graph. Therefore, users can easily write axis names and scale values ​​in these spaces. When the vertical and horizontal axes of the graph are drawn with the intersection point 1000 as the origin, it is preferable to ensure that there is sufficient space to write axis names and scale values ​​to the left of the vertical axis and below the horizontal axis of the graph. From this viewpoint, it is preferable that the intersection point 1000 is located at a position shifted at least 1.5 cm above the bottom line 500 of the grid area 20, and at least 1.5 cm to the right of the leftmost line 600 of the grid area 20.

[0016] It should be noted that the present invention is not limited to the embodiments described above, and can be modified without departing from the spirit of the invention. For example, the vertical and horizontal dividing lines do not necessarily have to be of one type, and for example, two types of vertical and horizontal dividing lines may be drawn. For example, in graph paper 1, if a 1 mm grid is drawn with horizontal and vertical lines of thickness a, a 5 mm grid may be drawn with horizontal and vertical dividing lines of thickness b (b>a), and a 10 mm grid may be drawn with horizontal and vertical dividing lines of thickness c (c>b).

[0017] In the above embodiment, the bottom line 500 and the leftmost line 600 were both drawn as straight lines of the same thickness (thickness a) as the multiple horizontal lines 20a and the multiple vertical lines 20b. However, the present invention is not limited to such embodiments. The bottom line 500 and the leftmost line 600 may both be drawn as straight lines thicker than thickness a. For example, the bottom line 500 and the leftmost line 600 may both be drawn as straight lines of the same thickness (thickness b) as the horizontal dividing lines 100 and the vertical dividing lines 200, or they may be drawn as straight lines thicker than thickness b. As shown in Figure 3, when the bottom line 500 and the leftmost line 600 are both drawn as straight lines thicker than thickness a, the boundaries of the grid area 20 can be made more prominent, and the user can easily grasp the extent of the grid area 20.

[0018] As shown in Figure 4, a "0" mark indicating the origin may be provided at the intersection point 1000 of the first horizontal dividing line 101 and the first vertical dividing line 201. Furthermore, markings may be provided along the first horizontal dividing line 101 and the first vertical dividing line 201. These markings may be displayed in a small font. When such markings are provided, the user can refer to these markings when drawing the vertical and horizontal axes of the graph with the intersection point 1000 as the origin, making it easier to create the graph.

[0019] In the above embodiment, the grid drawn in the grid area 20 is a square grid such as a 5 mm grid or a 10 mm grid. However, the present invention is not limited to square grids. For example, the present invention can also be applied to semi-logarithmic grids or full-logarithmic grids. [[Description of Symbols]]

[0020] 1 Graph paper 10 Margin area 20 Grid area 20a Horizontal line 20b Vertical line 100 Horizontal dividing line 200 Vertical dividing line 500 Bottommost line 600 Leftmost line 1000 Intersection 2000 Bottom left corner

Claims

1. A rectangular grid area drawn with multiple vertical lines aligned horizontally and multiple horizontal lines aligned vertically. The grid area comprises a margin area provided on the outer periphery of the grid area, The plurality of vertical lines comprises a plurality of first vertical lines drawn with line thickness a and a plurality of vertical dividing lines drawn with line thickness b (a < b), wherein a portion of the plurality of first vertical lines is located between two adjacent vertical dividing lines. The plurality of horizontal lines comprises a plurality of first horizontal lines drawn with line thickness a and a plurality of horizontal dividing lines drawn with line thickness b (a < b), and a portion of the plurality of first horizontal lines is located between two adjacent horizontal dividing lines. The boundary between the left edge of the grid area and the margin area is defined by the leftmost line among the multiple vertical lines. The boundary between the lower edge of the grid area and the margin area is defined by the lowest line among the multiple horizontal lines. The intersection point of the leftmost first vertical dividing line among the plurality of vertical dividing lines and the bottommost first horizontal dividing line among the plurality of horizontal dividing lines is located above and to the right of the intersection point of the leftmost line and the bottommost line. The distance between the first vertical dividing line and the leftmost line is shorter than the distance between the second vertical dividing line, which is the second vertical dividing line from the left among the plurality of vertical dividing lines, and the first vertical dividing line. Graph paper characterized in that the distance between the first horizontal dividing line and the bottom line is shorter than the distance between the second horizontal dividing line, which is the second from the bottom among the plurality of horizontal dividing lines, and the first horizontal dividing line.

2. The graph paper according to claim 1, wherein the thickness of the leftmost line and the bottommost line is greater than the thickness a.

3. The graph paper according to claim 1 or 2, which includes a scale indicating the origin at the intersection of the first horizontal dividing line and the first vertical dividing line, and scales along the first horizontal dividing line and the first vertical dividing line.

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