JPS6235034Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a design reading device used in the preparation process of jacquard knitting and woven fabrics.

A drum-type scanner has conventionally been used as a design image reading device. A drum-type scanner wraps a design drawn on graph paper or the like around a drum, and while rotating it at high speed, reads it with a reading head using a photoelectric conversion element with a reading spot diameter equivalent to one pixel.

In order to read a design image with a reading device having a one-pixel photoelectric conversion element such as a drum scanner, it is necessary to move the positional relationship between the reading head and the design image at high speed.

However, the reading head of a drum type scanner has a light source and a light receiving section integrated into one, and is quite heavy, making it difficult to move the reading head at high speed. Therefore, the design image is wrapped around a drum and rotated at high speed, but with this method, the design image drawn in poster color is wrapped around the drum, so the poster color easily peels off, and the rotation of the drum is not constant. Therefore, there was a drawback that the reading direction and spacing of the design images were limited.

The present invention aims to improve the conventional problems by installing the light source and the light receiving part away from the reading head and making it possible to move the reading head at high speed.The gist of the invention is as follows. a reading head that integrates the light-emitting side end of the light-emitting optical fiber and the light-entering side end of the light-receiving optical fiber; a moving mechanism for moving the reading head in both the X and Y directions; and the light-emitting head. A design image reading device includes a light source provided near an end surface on the light input side of an optical fiber, and a photoelectric conversion section provided near an end surface on the light output side of the light receiving optical fiber.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a reading head, and FIG. 3 is a diagram for explaining the structure of the reading head and a control box. In FIGS. 1 to 3, a design drawing 1 is placed on the table of an XY plotter 2. Since the design image 1 is electrostatically attracted, it will not shift during reading. A pen-shaped reading head 4 is attached to the pen head 3 of the XY plotter 2.
A light source and a light receiving section are housed in a control box 6, and are optically connected to the reading head 4 through an optical fiber 5.

The position of the reading head 4 is controlled by a computer 7. The color of the design image 1 read by the reading head 4 is sent to the control box 6 through the optical fiber 5.
The signal is A/D converted and transmitted to the computer 7. The read data is output to a floppy disk, paper tape, etc., and becomes pattern data for jacquard fabrics.

When the pattern of the read data is confirmed, the reader can change the reading head 4 to a felt-tip pen and draw the data.

The reading speed is determined by the XY plotter used. For example, with an XY plotter with a drawing speed of 50 mm/sec, it takes 31.2 minutes to read a 360 mm x 260 mm design image at an interval of 1 mm ² /pixel. In addition, it takes 4.3 minutes to read a similar design using an XY plotter with a drawing speed of 360 mm/sec.

Next, the appearance of the reading head 4 will be explained with reference to FIG.

The reading head 4 has only an optical fiber 5 built-in, has the same size and shape as the pen of the XY plotter 2, and can be easily attached to the pen head 3.

At the tip of the reading head 4, optical fibers for transmitting and receiving light are arranged perpendicularly to the design image 1.

A protrusion 8 is attached to the reading head 4 in order to maintain a constant distance between the tip of the reading head 4 and the design image 1. In addition, design image 1 is electrostatically attracted to prevent unevenness due to wrinkles, etc.

Next, the structure of the reading head 4 and control box 6 will be explained with reference to FIG.

The light from the light source 12 illuminates the design image 1 through the light projecting optical fiber 14. The reflected light from the original image 1 passes through light-receiving optical fibers 15, 16, 17 and irradiates photoelectric conversion elements 9, 10, 11.

RGB dichroic mirrors 18, 19, 20 are installed in front of the photoelectric conversion elements 9, 10, 11 to obtain data as color signals. The outputs of the photoelectric conversion elements 9, 10, 11 are A/D
The data is digitized by the converter 13 and transmitted to the computer 7.

As explained above, according to the present invention, the design image can be read by moving the reading unit, which reduces problems such as poster color peeling of the design image, and also allows the design image to be read after being deformed. This has become possible and the industrial effects are enormous.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view of the reading head, and FIG. 3 is a diagram for explaining the relationship between the reading head and the control box. In the figure, 1 is a design drawing, 2 is an XY plotter, 3 is a pen head, 4 is a reading head, 5 is an optical fiber, 6 is a control box, 7 is a computer, 8 is a projection, 9, 1
0 and 11 are photoelectric conversion elements, 12 is a light source, 13 is an A/D converter, 14 is an optical fiber for light projection, 1
5, 16, 17 are optical fibers for light reception, 18, 19,
20 is an RGB dichroic mirror.

Claims (1)

[Scope of utility model registration request] a reading head that integrates an optical fiber end of a light-emitting optical fiber and a light-incoming end of a light-receiving optical fiber;
A moving mechanism for moving the reading head in both X and Y directions, a light source provided near the light input side end surface of the light emitting optical fiber, and a photoelectric conversion section provided near the light output side end surface of the light receiving optical fiber. A design image reading device consisting of.