JPH0482936A - Apparatus for producing surface design pattern 0f fiber-dyed dobby cloth - Google Patents

Abstract

PURPOSE:To obtain the subject apparatus for expressing the twist hardness of two-colored twist by processing a color mask and a grandrelle yarn expression pattern by logical operation and outputting a surface design pattern expressing the twist hardness from the produced color data. CONSTITUTION:The kind of yarn, twist direction of the yarn, twist number, texture and color arrangement are inputted, a grandrelle yarn is expressed from the color, twist direction and twist number, the twist angle is calculated from the twist number and a color mask having the angle is prepared. The color mask and the grandrelle yarn expression data are subjected to logical operation and the prepared color data are transmitted to a printer to print a surface design pattern expressing the twist hardness.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for creating a surface pattern of yarn-dyed dobby fabrics, and particularly for creating surface pattern patterns of warps and wefts, which are the basis of yarn-dyed dobby fabrics. This invention relates to a surface pattern creation device that allows the twist strength of two colors of twisted yarn to be expressed by inputting the number of twists, and allows easy design of textile pattern patterns.

[Prior art]

Textiles come in a wide variety of weaving structures, and the colors of thread used vary depending on the design. In addition, although woven fabrics appear to be flat at first glance, their surfaces actually have irregularities depending on the type of woven structure, and the texture may vary depending on the thickness of the threads and the number of threads per unit. By the way, there are some characteristics that differ. Therefore, in order to commercialize yarn-dyed dobby fabric with a new design, it is necessary to create a sample fabric for each design and check the quality of the design, which not only takes time but also imposes a large cost burden. was.

For this reason, when designing yarn-dyed dobby fabrics, methods have been developed that use computers to create surface patterns (for example, JP-A-6:3-2
(See Publication No. 1948).

In this conventional method, a color pattern is first expressed using three colors of RGB (red, green, blue) signals on a color CRT, and then
MCBk (yellow, magenta, cyan, black)
It is output as a hard copy expressed as a dither pattern, etc. However, there is a problem in that the hard copy obtained in this way often looks different from the actual woven fabric.

Therefore, in order to output a hard copy with an expression close to the actual woven fabric, the present inventor has already proposed a surface pattern creation device that can express the roundness and three-dimensional effect of yarn (Japanese Patent Application No. 1983-
1.58296). Although this device can express the roundness and three-dimensional effect of the thread, there is a problem that the green texture of the weave cannot be sufficiently expressed when the weave pattern is plain or the thread color is the same color. Ta.

Here, the texture greenness refers to the texture, color arrangement of warp and weft,
Refers to the state of the color of the boundary between adjacent threads expressed by the thickness (density) of the warp and weft. For example, in the case of plain fabrics, the greenness of the texture is more important than the roundness of the threads or the three-dimensional effect, and the fabrics are discriminated based on the greenness of the texture.

The present inventor has already proposed a method for expressing such a green texture (Japanese Patent Application No. 1-167927). According to this, for example, for plain fabrics or fabrics with the same color of adjacent threads, by specifying the type of weave structure and the colors of the warp and weft, yarn-dyed dobby fabrics with a delicate texture on the surface can be created. A surface pattern corresponding to the textile design can be obtained.

[Problems to be Solved by the Invention] The above-mentioned surface pattern expression techniques are based on the assumption that the warp and weft yarns, which are the basis of yarn-dyed dobby fabric, are of a single color. The inventor further provides that - for a twisted yarn (mokuito) in which warp and weft yarns are twisted in two colors,
We have proposed an improved surface pattern creation device that can express two-color thread stitching by considering the weaving structure, density, and arrangement (Japanese Patent Application No. 1-305803).

However, even with the above-mentioned technology, there remains the problem that the strength of the twist of the yarn cannot be expressed.

An object of the present invention is to provide a surface pattern creation device that can express the twist strength of two colors of twisted yarn by changing the number of twists.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a fabric structure,
An input means for inputting the type of yarn and color arrangement to be used, an arithmetic processing means for creating a surface pattern of the fabric based on information input by the input means, and a printing or display of the surface pattern pattern produced by the arithmetic processing means. In the apparatus for creating a surface pattern pattern for yarn-dyed dobby fabrics, the apparatus includes data on the first color, second color, twist direction, and number of twists of the twisted yarn inputted by the input means; Yarn expression data generated from the second color, direction, and twist number data; means for calculating a twist angle from the twist number data and creating a color mask having the twist angle; A means for creating color data by performing a logical operation on the yarn expression data, and a means for outputting a surface pattern expressing the twist strength based on the output of the creating means are provided.

[Operation] Follow the menu on the work screen to input the type of thread to be used, the twisting direction of the thread, the number of twists, texture, and color arrangement. The input color, twist direction, and number of twists represent the yarn. Also,
A twist angle is calculated from the number of twists, and a color mask having that angle is created. A color is extracted by performing a logical operation on the color mask and the twisted yarn expression data, and by sending the color to a printer, a surface pattern expressing the twist strength is printed.

[Example] Hereinafter, an example of the present invention will be specifically described using the drawings.

FIG. 1 is a block diagram of an apparatus for creating a surface pattern of a yarn-dyed black-and-white fabric according to an embodiment of the present invention. In the figure, 1 is a control unit that performs simulation processing, color mask processing, etc.; 2 is a CRT for the control unit that displays a menu screen at system startup, displays error messages, etc.;
3 is a color processing unit consisting of a CRT controller, frame buffer, etc.; 4 is a color CRT on which a work screen, surface pattern, etc. is displayed; 5 is a print controller that performs dither processing; 6 is a color printer; 7 is a keyboard; 8
1 is a tablet for inputting textures, colors, etc.; 9 is a RAM for storing yarn data, texture data, etc.; and 10 is a disk for registering surface patterns. The control unit 1 includes a simulation processing unit 11, a division processing unit 12 that divides the warp and weft into a plurality of regions, and a thread expression that generates representation data of the thread from the color, direction, and number of twists of the thread. A generation unit 13, a twist angle calculation unit 14 that calculates the twist angle from the twist number data, a color mask creation unit 15 that creates a color mask having the twist angle, and a color mask created by the color mask creation unit. It is composed of a logical operation section 16 that performs logical operations on the thread expression data, and a color data generation section 17.

FIG. 2(a) is a processing flowchart of the surface pattern creation apparatus of the present invention. Hereinafter, the present invention will be explained in detail using this flowchart.

Inputting yarn (step 21) In this step, the type of yarn to be used, that is, whether it is a single-color twisted yarn or a two-color twisted yarn, is controlled using the tablet 8 according to the menu on the work screen displayed on the color CRTd. Enter in section 1. In the case of two-color twisted yarn, the twisting direction and number of twists of the yarn are input using the keyboard 7, as will be described later.

Tissue Input (Step 22) Next, in order to specify the weave structure according to the menu on the work screen displayed on the color CRTd, input the order,
The control unit 1 uses the tablet 8 to send information regarding the glass insert.
Enter. In the case of order entry, enter the basic organization data,
In the gala insert, enter the basic organization and insert method data. To explain the basic structure, FIGS. 3(a) to 3(c) are diagrams showing some examples of woven structures, and FIG. 3(a) is plain weave, (
b) shows twill weave, and (c) shows satin weave. In addition, the black lines in the figure are warp threads (warp threads), and the white lines are weft threads (weft threads).

Figures 3(d) to (f) are partially enlarged weave structures of plain weave, twill weave, and satin weave, respectively.For example, in the case of plain weave, the warp and weft threads are shown in Figure 3(d). It is composed of basic tissues arranged alternately as a unit.

Arrangement manually (Step 23) Here, the density of the warp and weft, that is, the number of threads per inch, the color arrangement of the warp and weft, and the number of warp and weft in color units are determined using the keyboard 7 and tablet 8. Input to control unit 1. FIG. 4 is a table showing the color arrangement displayed on the color CRTd, and this figure shows an example of the warp arrangement table. The vertical axis is the color number (4821, 4911...) arranged from above in the order of color production, and the numbers 1 to n on the horizontal axis indicate the position on the warp, and the numbers in the table are, for example, , color number 4821 and location 1 is 48
This means specifying 6 threads of color number 21 (the number of threads per color).

Simulation (Step 24) In this step, a simulation is performed on the simulation processing unit 11 of the control unit 1 using basic tissue data and array data. When executing the simulation, the simulation is performed while changing the basic structure, array data, display position on the CRT 4, magnification for enlarged display, and the like. Then, a temporary print is made to view the simulation results.

Color Processing for Printing (Step 25) When the simulation ends, color processing for printing is performed as described later.

The processing explained in the following is an outline of the processing of the present invention, but the characteristics of the present invention, (1) input of twisted yarn, and (2) color processing for printing will be explained in more detail.

■Inputting the twisted yarn of the present invention Figures 5 (a) and (b) are diagrams modeling a twisted yarn in which the warp and weft yarns are of two colors, and the warp yarns and weft yarns are the first color 52. (shaded area) and the second color 53 yarn. The twisting direction is shown in Figure 5(a).
5(b) shows right-handed twisting, and FIG. 5(b) shows left-handed twisting, where the twisting angle is O.

By the way, in the spinning system, the "number of twists of thread T" is 2°54 c
It represents the number of twists between m, and it is known that a yarn with a large number of twists T is twisted more strongly.

The threads shown in Fig. 5(a) and (b) are each made three times,
It is twisted 4.5 times. Therefore, the relationship between the twist angle θ and the number of twists T of the yarn is approximately expressed by the following equation.

tanθ#2.54/T However, the width S of the yarn is taken as the unit width.

That is, the twist angle O represents the strength of the twist, and in the present invention, by inputting the number of twists of the thread, it is possible to indirectly represent the strength of the thread.

In this way, in the case of two-color twisted yarn, in the present invention, for each of the warp and weft used, the constituting color and the twisting direction (
(right or left) and the number of twists of the thread.

(2) Color processing for printing according to the present invention FIG. 2(b) is a flowchart showing the color processing according to the present invention. To explain the color processing of the present invention in detail using this flowchart, first, the number of warps and wefts that can be printed is set according to the paper size (step 251).
.

Dividing Thread (Step 252) In order to create a surface pattern using the color printer 6, the thread to be expressed is composed of a plurality of dots.

FIG. 6(a) shows, for example, the warp A5 of interest, the surrounding warp A+, 3, 7.9, and the weft A2 in a plain weave structure.
4,6.8 is a surface view of a woven structure consisting of This warp A
, 5 (referred to as regions) are divided into n (vertical)×m (horizontal) small regions aJJ by the division processing unit 12, and each region is configured to correspond to an L dot of a color printer. The other warps and wefts are similarly divided into matrix shapes.

Note that the area A5 can be displayed on the color CRTd only when it is enlarged to one screen.

Representation of looped yarn (step 253) For each region described above, the looped yarn expression generation unit 13 generates looped yarn expression data based on the constituent color, twist direction (right or left), and number of twists. generate.

FIG. 6(b) is a representation (data) of the yarn when the area is divided into 5×4 dots and the number of twists is 2. In this representation, the sections 61 and 62 whose small area is u ] I+ are the first color of the two-color yarn, and the section 63 whose small area is 0'' is the second color. When expressing the textured green feeling as described above, the color of the border of area A5 is determined by considering the surrounding color of area A5.For example, the color of the border of area A5 is determined by Color is A
It may be determined according to an algorithm (Japanese Patent Application No. 1-167927 mentioned above) that takes into consideration the colors of No. 1, A2, and A4.

Color mask processing (steps 254-257) This processing is
This is a process performed on the control unit 1 to extract each color from the representation data of the mogu thread created as described above. That is, the twist angle calculation unit 14 calculates the twist angle θ from the previously input twist number T, and the color mask creation unit 15 creates a first color mask (FIG. 7a) having this twist angle θ. (step 254). In the logic operation unit 16, this first
A logical AND operation is performed between the color mask of 61 and the expression data of FIG.
55). Next, a second color mask (Fig. 7b) is created in the same manner.
), and performs an AND operation on this second color mask and the expression data of FIG. 6(b) to extract the color of the section 63. In the color data generation unit 17, the first color and the second color extracted in this way are subjected to a logical OR process (step 25).
6) The color data and coordinate values for one line (M warps or N wefts) are passed to the print controller 5 (step 257).

By performing the following two treatments on each yarn, a surface pattern of the fabric corresponding to the two colors of twisted yarn can be obtained. Note that the color representation method is different between the color display on the color CRT 4J2 and the hard copy on the color printer 6 (color CRT uses RGB signals, color printer uses YM signals).
CBk), the correspondence relationship between the color display on the color CRT 4 and the hard copy by the color printer 6 is set in advance, and for example, the RGB signal is converted into a dither pattern etc. that can express halftones before being output. do. By doing this, it is possible to match the colors determined on the color CRTJ with the colors of the hard copy produced by the color printer 6 that serves as a fabric sample.

〔Effect of the invention〕

As explained above, according to the present invention, when creating a surface pattern, it is possible to express the twist strength of two colors of twisted yarn by inputting the number of twists, which is comparable to an actual textile sample. It becomes possible to create a surface pattern without any blemishes.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a surface pattern creation device for yarn-dyed dobby fabric according to an embodiment of the present invention; FIG. 2(a);
FIG. 2(b) is a processing flowchart of the surface pattern creation device of the present invention, FIGS. 3(a) to 3(f) are diagrams showing some examples of woven structures, and FIG. 4 is a color CRT. The table showing the color arrangement shown above, FIG. Figure 6 (a) is a surface view of the woven structure of the present invention, Figure 6 (b) is a representation of the yarn when the area of the present invention is divided into 5 x 4 dots and the number of twists is 2; FIG. 7(a) and FIG. 7(b) are diagrams showing the color mask of the present invention. DESCRIPTION OF SYMBOLS 1...Control part, 2...CRT for control part, 3.
...color processing section, 4..color CRT, 5..print controller, 6..color printer, 7..keyboard, 8..
...Tablet, 9...RAM, 1o...Disk, 11...Simulation processing section, 2...Division processing section, 13...Mogu yarn expression generation section, 4...Twisting angle calculation section , 5... Color mask creation section, 7... Color data generation section. 16 ・Logic operation section,

Claims (1)

[Claims] (1) An input means for inputting the texture of the textile, the type of yarn used, and the color arrangement; a calculation processing means for creating a pattern on the surface of the textile based on the information input by the input means; and a surface pattern formed by the calculation processing means. In an apparatus for creating a surface pattern pattern for yarn-dyed dobby fabric, which includes means for printing or displaying a pattern pattern, first color, second color, twist direction, and number of twists of the twisted yarn inputted by the input means; , means for calculating a twist angle from the first and second color, direction, and twist number data and the twist number data, and creating a color mask having the twist angle. and,
A means for creating color data by performing a logical operation on the color mask and the yarn expression data, and a means for outputting a surface pattern pattern expressing twist strength based on the output of the creating means. This is a surface pattern creation device for yarn-dyed dobby fabric.