The Amber Project: A Survey of Methods and Inks for the Reproduction of the Color of Translucent Objects

Trujillo-Vazquez, Abigail; Fuller, Harrie; Klein, Susanne; Parraman, Carinna

doi:10.3390/app12020793

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…The misalignment of individual pigment particles and the thickness of the printed layer that allows placing multiple particles underneath each other provoke reflections of multiple wavelengths in multiple directions and can produce incoherent scattering. Inks made with effect pigments are not suitable for inkjet printing due to a large pigment size (up to 25 microns) but can be employed in screen printing, flexo printing, and even direct lithography [49]. In order to maximize the generated color of the pigments, it is better for the particles to lay flat on the surface, which can be best achieved by screen printing.…”

Section: Spectraval Effect 'Pigments'mentioning

confidence: 99%

Printing with tonalli: Reproducing Featherwork from Precolonial Mexico Using Structural Colorants

Trujillo-Vazquez,

Abedini,

Pranovich

et al. 2023

Colorants

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Two of the most significant cases of extant 16th-century featherwork from Mexico are the so-called Moctezuma’s headdress and the Ahuizotl shield. While the feathers used in these artworks exhibit lightfast colors, their assembly comprises mainly organic materials, which makes them extremely fragile. Printed media, including books, catalogs, educational materials, and fine copies, offer an accessible means for audiences to document and disseminate visual aspects of delicate cultural artifacts without risking their integrity. Nevertheless, the singular brightness and iridescent colors of feathers are difficult to communicate to the viewer in printed reproductions when traditional pigments are used. This research explores the use of effect pigments (multilayered reflective structures) and improved halftoning techniques for additive printing, with the objective of enhancing the reproduction of featherwork by capturing its changing color and improving texture representation via a screen printing process. The reproduced images of featherwork exhibit significant perceptual resemblances to the originals, primarily owing to the shared presence of structural coloration. We applied structure-aware halftoning to better represent the textural qualities of feathers without compromising the performance of effect pigments in the screen printing method. Our prints show angle-dependent color, although their gamut is reduced. The novelty of this work lies in the refinement of techniques for printing full-color images by additive printing, which can enhance the 2D representation of the appearance of culturally significant artifacts.

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Section: Spectraval Effect 'Pigments'mentioning

confidence: 99%

Printing with tonalli: Reproducing Featherwork from Precolonial Mexico Using Structural Colorants

Trujillo-Vazquez,

Abedini,

Pranovich

et al. 2023

Colorants

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“…At the same time, so far, 2.5D printing with Merck RGBW pigments has not been explored. In the later work, [4], the ability of recreating 3D visual experience while printing with RGBW inks with focus on reproduction of translucent appearance was explored.…”

Section: Introduction and Related Workmentioning

confidence: 99%

Dot Off Dot Screen Printing with RGBW Reflective Inks

Pranovich¹,

Valyukh²,

Gooran³

et al. 2023

jist

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“…This work has explored the challenges of the production of an iridescent image using novel RGB pigments via screen printing, a method proven suitable to work with such pigments [10]. Screen printing is a stencil process utilizing a fine mesh stretched over a frame.…”

Section: Introductionmentioning

confidence: 99%

Effect of halftones on printing iridescent colors

Abedini¹,

Trujillo-Vazquez²,

Gooran³

et al. 2023

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The iridescent effect produced by structural color is difficult (if not impossible) to capture and print using traditional CMYK pigments. The so called RGB reflective pigments, nonetheless, generate angle-dependent colors by light interference. A layered surface structure generated by the pigments' particles on a substrate reflects light waves of different wavelengths at different viewing angles according to the optical principle known as the Bragg Law. In this work, we have studied the influence of different halftone structures on printed images, produced with RGB reflective inks via screen printing. The main goal was to enhance the iridescence of a printed reproduction by studying the performance of different halftone algorithms on a screen printing process. We investigated the influence of different halftone structures in creating different spatial combinations of inks on a print to reproduce the image of an iridescent feathered headdress. We applied first-order, second-order, and structure-aware FM halftones to compare how they influence the reproduction of the material appearance of the object represented in the original image. The results show that the structure-ware halftones improve the representation of the image structures and details. Therefore, it could better convey the 3D surface features that produce iridescence in real feathers.

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The Amber Project: A Survey of Methods and Inks for the Reproduction of the Color of Translucent Objects

Cited by 3 publications

References 10 publications

Printing with tonalli: Reproducing Featherwork from Precolonial Mexico Using Structural Colorants

Printing with tonalli: Reproducing Featherwork from Precolonial Mexico Using Structural Colorants

Dot Off Dot Screen Printing with RGBW Reflective Inks

Effect of halftones on printing iridescent colors

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