Difference between revisions of "Category:Indigo/Orpiment: Ukiyo-e colorant"

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[[File:SC155045.jpg|right|250px|link=https://collections.mfa.org/objects/207552/kamakura-village-from-an-untitled-series-of-westernstyle-l?ctx=1be86594-d25a-458d-827f-8e5dc3048977&idx=0|Kamakura Village by Katsushika Hokusai]]
 
[[File:SC155045.jpg|right|250px|link=https://collections.mfa.org/objects/207552/kamakura-village-from-an-untitled-series-of-westernstyle-l?ctx=1be86594-d25a-458d-827f-8e5dc3048977&idx=0|Kamakura Village by Katsushika Hokusai]]
  
<font size="3">'''[[:Category:Indigo: Ukiyo-e colorant|Indigo]] + [[:Category:Orpiment: Ukiyo-e colorant|Orpiment]]'''</font>: Indigo and orpiment was used to create a green through mixing or overprinting the two colorants. The most commonly seen mixutre to produce a green, it appears that printers were able to create a wide range of greens with these two colorants. It also appears that printers also settled on indigo+orpiment as the go to green.
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<font size="3">'''[[:Category:Indigo: Ukiyo-e colorant|Indigo]] + [[:Category:Orpiment: Ukiyo-e colorant|Orpiment]]'''</font>: Green is achieved by mixing or overprinting a blue and a yellow colorant. The dominant formulation for green after the introduction of full-color printing after 1765 is a mixture of indigo and orpiment. By altering the proportions of each, a wide variation of greens could be obtained. The preference for this formulation of green might be due to the relative stability of both indigo and orpiment to moisture. However like most of the colorants used for woodblock printing during the Edo period both will fade upon prolonged exposure to light.  
 
 
  
 
'''For more information see:''' [[:Category:Indigo: Ukiyo-e colorant|Indigo]], [[:Category:Orpiment: Ukiyo-e colorant|Orpiment]]
 
'''For more information see:''' [[:Category:Indigo: Ukiyo-e colorant|Indigo]], [[:Category:Orpiment: Ukiyo-e colorant|Orpiment]]
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== Analysis ==
 
== Analysis ==
Excitation Emission Matrix (EEM) spectroscopy can easily identify turmeric due to its high fluorescence and clear, consistent pattern. Another yellow colorant thought to have been traditionally used, [[Amur cork tree|Japanese yellow wood]] or kihada also fluoresces very brightly but they give very distinctive EEM patterns, making it easy to differentiate between the two. Yellow wood has not been detected so far.
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Fiber optic reflectance spectroscopy (FORS) is used to identify [[:Category:Indigo: Ukiyo-e colorant|indigo]] and X-ray fluorescence analysis (XRF) is used to detect arsenic, which is an indication for the presence of  [[:Category:Orpiment: Ukiyo-e colorant|orpiment]] (As<sub>2</sub>S<sub>3</sub>).
 
<gallery mode="packed" heights="200px" style="text-align: left">
 
<gallery mode="packed" heights="200px" style="text-align: left">
Turmeric EEM ref.jpg|<center>3D EEM plot for Turmeric</center>
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Indigo FORS.JPG|<center>FORS spectrum of Indigo reference</center>
Yellow EEM plots.jpg|<center>3D EEM plots for Yellow references</center>
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Slide4 FC334.PNG|<center> XRF spectrum of Orpiment</center>
 
</gallery>
 
</gallery>
  
 
==List of Prints ==
 
==List of Prints ==
List of prints where indigo was detected
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Below is a list of prints where indigo + orpiment was detected.

Latest revision as of 00:35, 27 July 2020

Kamakura Village by Katsushika Hokusai

Indigo + Orpiment: Green is achieved by mixing or overprinting a blue and a yellow colorant. The dominant formulation for green after the introduction of full-color printing after 1765 is a mixture of indigo and orpiment. By altering the proportions of each, a wide variation of greens could be obtained. The preference for this formulation of green might be due to the relative stability of both indigo and orpiment to moisture. However like most of the colorants used for woodblock printing during the Edo period both will fade upon prolonged exposure to light.

For more information see: Indigo, Orpiment

Examples of Indigo+Orpiment in Ukiyo-e Prints

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Analysis

Fiber optic reflectance spectroscopy (FORS) is used to identify indigo and X-ray fluorescence analysis (XRF) is used to detect arsenic, which is an indication for the presence of orpiment (As2S3).

List of Prints

Below is a list of prints where indigo + orpiment was detected.

Pages in category "Indigo/Orpiment: Ukiyo-e colorant"

The following 58 pages are in this category, out of 58 total.

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