JPS5985948A - Checking method of drawn line - Google Patents

Abstract

PURPOSE:To ensure easy judgement of directivity by a simple mechanism and to manufacture a device inexpensively, by drawing a polygon by straight lines, and scanning arbitrary points on the sides of the polygon by a plurality of sensors, without using high technology. CONSTITUTION:A polygon is drawn on a paper surface S by drawing parts A and B. The paper surface S is moved so that scanning lines cross all the 8 drawing lines, and sensors and the drawing pattern are correctly positioned. Then, a slider 11 is moved so that 8 intersections are formed by the scanning lines and the drawing pattern. The presence or absence of the drawn lines or the difference in light and shade at each intersection is read by the sensor, and a pulse signal is generated. When the 8 drawn lines are correctly described, 8 pulse signals are generated. Even one drawn line is missing or faint, the sum of the pulse signals become fewer than 8. Therefore, the quality of the drawn lines can be judged by the pulse number.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for automatically testing a characteristic called "directivity" in the writing performance test of writing instruments, particularly ballpoint pens, which does not require advanced technology and is simple. It is an object of the present invention to provide a writing line inspection method that allows the determination of the "directivity" to be performed reliably and easily using a suitable device.

In the writing performance test of writing implements, the presence or absence of drawn lines, that is, whether or not it can actually be written, is inspected, and the shading of the drawn lines, the presence of line edges, blurring, etc., are inspected to see whether they are satisfactory for actual use. However, especially in the case of ballpoint pens, inspection is performed to see if they have ``directionality.''

This "directivity" is a property that indicates whether or not lines cannot be drawn or are thin in certain directions when a ballpoint pen is moved in all directions on the paper surface with uniform writing pressure to draw lines.

The best way to determine this "directionality" is to draw a circle in cursive. This is because a circle includes writing lines in all directions. Conventionally, this directionality test was performed by a person holding a writing instrument, drawing a circle, and visually checking whether the drawn line was good or bad. Furthermore, in order to determine the directionality of a circle drawn by the device, advanced technology is required, and the device itself is expensive.

Therefore, there is a method that uses a sensor to read a simple writing line, that is, a straight line or a curve close to a straight line drawn in one or two directions, and determines whether or not it has been written. It is not possible to determine the "directivity".

By having the configuration described in the claims, the present invention enables a written line inspection that does not require advanced technology and can reliably and easily determine "directivity" with a simple device. The present invention provides a method.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The written line inspection method of the present invention, which is carried out by the apparatus shown in the drawings, will be described in detail below.

As shown in FIG. 1, an apparatus for carrying out the writing line inspection method of the present invention is composed of a writing part A and a writing part B arranged in parallel, and a detection part C arranged above them. On the front side, a paper surface S on which lines are to be drawn in cursive is movably arranged. The paper surface S has writing sections A and B.
After the polygon is drawn, when the paper surface S is moved and passes in front of the detection unit C, it is detected by the detection unit C,
Writing performance will be judged.

The detection section A is constructed as shown in FIG. That is, a shaft holding device 2 is held on a channel-shaped slide base 1, and a writing instrument 3 is attached to the shaft holding device 2.

The slide pace 1 is assembled so as to slide on the flange surface of a T-shaped rod 4, and the T-shaped rod 4 is roughly supported so as to be slidable on the holder 5.

Further, the T-shaped rod 4 is configured to be able to move up and down by a vertical sliding cam 6, and the slide pace 1 is slid up and down via the T-shaped rod 4 by rotation of the vertical sliding cam. Ru. Furthermore, the slide pace 1 is attached to the holder 5.
It is configured to also slide left and right by a lateral sliding cam 10 via a bushing rod 9 that is slidably supported by another holder 8 corresponding to the holder 8 . The writing section A having the above-mentioned configuration combines the two cams 6 and 100 rotations to move the writing instrument 3 into a drawing line pattern D shown in FIG. It slides as if drawing.

The writing part B has the same structure as the writing part A, but the two cams are formed so that the pattern of the drawn lines is symmetrical to the pattern of the drawn lines drawn by the writing part A,
As a result, if you attach the writing instrument to writing part A and draw a line pattern, then move the writing instrument to writing part B without rotating it, and draw the line pattern again, you will finally get the phase shown in Figure 4. Line drawing pattern D that draws straight lines in 8 different directions
and E.

As shown in FIG.
Photoelectric sensors 12 and 13 are mounted above and below and parallel to the paper surface S. As the slider 11 moves, the sensors 12 and 13 form two parallel scanning lines as shown by the 41st medium chain line. Note that any mechanism may be used to support and drive the slider 11 as long as it maintains a constant distance between the sensor and the paper surface.

To explain in detail the written line inspection method of the present invention using the device having the above configuration, a polygon (a square in this embodiment) is drawn on the paper surface S by the writing sections A and B, and then 8 lines are drawn as shown in FIG. The paper surface S is moved so that the scanning line crosses all the writing lines of the book, and the sensor and the drawn line pattern are positioned. Then, the slider 11 is moved so that there are eight points of intersection between the scanning line and the drawn line pattern, and at these points the sensor reads the presence or absence of the written line or the difference in shading, and a pulse signal is generated. Therefore, when eight writing lines are drawn normally, eight pulse signals are generated, but one pulse signal is generated.
If there are no writing lines in a book, or if the writing is in the book, the total number of pulse signals will be less than eight. Therefore, it is possible to judge whether the writing line is good or bad based on the number of pulses.

If consideration is given so that the drawn line patterns do not intersect in the writing section, if a plurality of writing instruments are arranged horizontally on the writing holding device and drawn at the same time, a drawn line pattern D1 as shown in FIG. 6 will be obtained.
# D2 s D3 and El.

E2. It becomes E3. As in the previous embodiment, all written lines can be detected using two sensors. In this case, for example, if n writing instruments are to be inspected at the same time, these n writing instruments are treated as one set, and if 1lffn detection signals are insufficient, the control device can be simplified by determining that all of the sets are defective. In addition, if you want to simultaneously detect and select defects individually, add a device that generates a signal that indicates which writing instrument was used to draw each line pattern, and use this signal and the number of detection signals for the corresponding line pattern to determine whether the line pattern is good or bad. Judgment can be made.

As described above, the written line inspection method of the present invention involves drawing a polygon with a straight line using a writing instrument, and scanning at least one arbitrary point on each side of the polygon with one or more sensors to check the drawn line. It is used to judge writing performance, especially the ``directionality'' of ballpoint pens, and even a simple drawing pattern such as a polygon can be used to determine the quality of ``directionality'' with a strong enough force, and requires a high level of skill to judge. This method is particularly effective as a writing line inspection method of this type, in that the U directionality can be determined with a simple device mechanism, and the device body can be manufactured at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a simplified perspective view of an apparatus for carrying out the writing line inspection method of the present invention, FIG. 2 is an exploded perspective view of a writing section constituting the apparatus, and FIG. Drawing line pattern, 1st [ is a diagram showing a state in which two drawn line patterns are drawn symmetrically, FIG. 5 is a simplified perspective view of a detection unit constituting the device, and FIG. It is a figure showing an example of. 3: writing instrument, S: paper surface, A, B: writing section, C: detection section,
12, 13: Sensor. Utility model registration applicant Mitsubishi Pencil Co., Ltd. Agent Osamu Kawa Yoshito Tatsuya Fuji 3C

Claims (1)

[Claims] A written line inspection method comprising: drawing a polygon with a straight line using a writing instrument, and scanning at least one arbitrary point on each side of the polygon using one or more sensors.