Difference between revisions of "Category:Dayflower/Safflower: Ukiyo-e colorant"

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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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Excitation Emission Matrix (EEM) spectroscopy and fiber optic reflectance spectroscopy (FORS) is used to identify safflower+dayflower.
 
<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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EEM purple lining.png|<center>EEM of dayflower+safflower</center>
Yellow EEM plots.jpg|<center>3D EEM plots for Yellow references</center>
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FORS purple lining.png|<center>FORS of dayflower+safflower</center>
 
</gallery>
 
</gallery>
  
 
==List of Prints ==
 
==List of Prints ==
 
List of prints where indigo was detected
 
List of prints where indigo was detected

Revision as of 19:50, 29 May 2020

Kamakura Village by Katsushika Hokusai

Dayflower + Safflower: Purple is achieved by mixing or overprinting a blue and red colorant. Dayflower and safflower is the most commonly found combination for purple. Used from early full color printing, it appears to be the preferred mixture even after the introduction of Prussian blue.

Due to the fading and/or shifting of dayflower and safflower, the purple can sometimes appear a brownish red/purple. Another frequently seen damage to the purple is water damage. The water soluble dayflower can get dispersed revealing the pink safflower. The appearance of purple in lined prints is also often effected. The water in the paste used to line the print can draw the dayflower into the lining paper effectively removing some of the dayflower colorant from the print as well as driving the dayflower deeper into the paper.

For more information see: Dayflower, Safflower

Examples of Dayflower+Safflower 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

Excitation Emission Matrix (EEM) spectroscopy and fiber optic reflectance spectroscopy (FORS) is used to identify safflower+dayflower.

List of Prints

List of prints where indigo was detected

Pages in category "Dayflower/Safflower: Ukiyo-e colorant"

The following 53 pages are in this category, out of 53 total.

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