5 research outputs found
Pigment mixing effect realized with pre-dyed opaque yarns for Jacquard textile design development
In modern Jacquard weaving, the application of yarn color variety is limited to electronic Jacquard machinery and realizing a wide scope of weave colors can be challenging. Therefore, when reproducing a pictorial image with a small yarn variety, artwork colors are defined by a CMYK (cyan, magenta, yellow, and black) system and its primary color data are used to associate with weave structures. In alignment with a CMYK pattern layout, shaded weave structures are incorporated to expand the accessible gamut of weave colors and natural shading is realized by different cover factors in the warp and weft. The mixing effect of CMYK yarns is intended for resolving the technical limitations of current digital Jacquard weaving. In this study, quantitative research is designed to examine four yarn mixing effects for which pairs of CMYK yarns are superimposed (e.g., [C]+[M], [C]+[Y], [M]+[Y], [C]+[K], [M]+[K], [Y]+[K]) and 90 different weave colors are produced in six groups. Once they are formatted in a standardized size, weave samples are measured by a spectrophotometer and analyzed by three coordinates (L*, a*, and b*) of a CIELAB color system. As shown by the analysis results, the weave colors bear not only varied brightness, hue, and chroma alternations, but also a great similarity to the pigment mixing effect. In application of the color mixing effect, a new way of woven color presentation is achieved and introduced as a new development of Jacquard design
Gradient colour deviation in woven textiles to correspond to pictorial images in diversity
This study aims to propose optimal weaving conditions for creation of a natural shading effect in woven textiles. By applying the weave structure and pattern theories, the two core parts of weaving are explored and examined towards improving realisation of gradient weave colours. When planning experiments, weave repeat sizes from 12- to 30-thread are created into a shaded weave series and compounded in a multi-weft figuring method. In terms of weave pattern, a colour spectrum image is designed and its split primary colour layers (e.g. cyan, magenta, yellow and black) are employed as a weave pattern. In conjunction with varied weaving conditions, a colour spectrum image is reproduced in 19 different woven forms. In this study, comparative
analysis is approached based on the samples resulted from trials and the practical research is explained in detail of weave structure and weave pattern specifications to propose the core principle of establishing gradient colour deviation
[Digital Jacquard design method and application thereof]
[Digital Jacquard design method and application thereof
Diamond-shaped shaded weave series created by transforming small twills to enrich the surface texture of woven Jacquards
Digital Jacquard textiles have been introduced through various approaches to the capability enhancement of color
expression and novel design proposition in modern weaving. Because of its a wide scope of weave colors with a
small number of fillings, the basic weave structure of satin is widely adopted in the creation of shaded weave series,
as they are highly reliable in presenting the natural color shading with maximized luster. However, its surface texture is
limited with consistent traverse lines attributed to regular stitching points in their structure combination. Therefore, a
new silhouette of shaded weave series is proposed and explored with twills to enlarge and vary the woven texture
effects. The shading effect with single twills will be presented in a linear and contrasting way; when small twill lines are cut
and replaced, the converted format will enable the creation of a varied surface touch. By finding the base marks where
the total interlacement of a repeat is proportionally divided, small twill lines are transformed by adding interweaving
points to build into a series. Furthermore, the basic principles received from satin-based shaded series are applied to the
achievement of gradient shading effects. In terms of weave pattern design, each color layer is individually designed with
levels of grayscales and defines each color region and color density to achieve a high-quality color presentation, as well as
a unique texture
Patterning technique for expanding color variety of Jacquard fabrics in alignment with shaded weave structures
This study aimed to enhance the capability of multiple weave color reproduction for Jacquard textiles. Today, the
subtractive color mixing of CMYK color system is being widely used for rendering weave patterns and assorting filling
yarn colors. However, as Jacquard color creation involves optical color mixing, the direct application of pigment mixing is
limited to corresponding to an artwork that involves red, green, blue and saturated solid black. Since Jacquard colors are
realized by opaque and non-blended material of yarns, it requires a different approach of light and pigment mixing to
simulate colors of an original image in woven forms. Therefore, in this study, the optimization of weave color reproduction
was approached to properly embrace the proposed color gamut of the CMYK model in digital Jacquard textiles.
Based on the ink densities of the CMYK color scope, segmentation was applied in reflection of optical thread color
mixing to attain optimal weave patterns. A pair of primary color layers was merged by defining a set of rules to classify
individual primary and secondary color patterns to designate colored threads in associated regions, and weave structures
were designed and aligned to generate varied levels of color shades in weaving form. The correlation between shaded
weave structures and the primary color-based weave patterns were matched to present a faithful color reproduction in
weaving