azo dyes and pigments such as monoazo dye, bisazo dye, trisazo dye and ... and diethyl terephthalate; xanthene dyes and pigments; and azurenium dye. ...
www.freepatentsonline.com/20060279833.html - 76k

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Note added at 15 mins (2007-04-13 03:14:14 GMT)
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azurenium pigment
... hole) in a broad sense, which include general dyes and pigments, and for example, ... and azo pigments, squalilium pigments, azurenium pigments and ...
www.patentgenius.com/patent/7129466.html - 110k - Supplemental Result -

アズレニウム is azlenium, but I couldn't find any hits for "azlenium pigment."
There are, however, hits for "azlenium dye," although dye would be 染料...
Hence the low confidence.
Perhaps this will help someone else provide you with a better answer.
Good luck!

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Note added at 22 mins (2007-04-13 03:20:57 GMT)
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ganryou　顔料 (http://www.aisf.or.jp/~jaanus/deta/g/ganryou.htm)　
1　Pigment. Powdered colours used in oriental painting. Insoluble in water and most other liquid media. Usually mixed with animal glue *nikawa 膠 as a binder *baizai 媒剤 to make a paint. Ganryou are opaque, durable and relatively resistant to fading. The term ganryou is used in contrast to senryou 染料, which refers to translucent soluble dyes. Senryou and ganryou are collectively known as *shikiryou 色料. Ganryou are divided into organic pigments *yuuki ganryou 有機顔料 and inorganic pigments *muki ganryou 無機顔料, both of which can be synthetically produced or made from naturally occurring materials. Many pigments used in Japan are so-called *iwa-enogu 岩絵具 made from minerals koubutsu 鉱物, and doro-enogu 泥絵具 made from earth materials, doshitsu zairyou 土質材料. The most important ganryou include the white pigments *hakudo 白土 and *gofun 胡粉, red *shu 朱, orange *tan 丹, yellow ochre *oudo 黄土, green *rokushou 緑青, brown *taisha 代赭, and blue *gunjou 群青. Pigments are not usually mixed, but variations in tone can be achieved by grinding down the powder; finer grains give a lighter shade. Sometimes a fixative is used to bind an insoluble substance such as powdered metal to a soluble dye, producing a lake pigment, reiki ganryou レーキ顔料 such as red madder lake, mada reiki マダ レーキ.

Photo-writing type recording medium and manufacturing method ...
The ionization potential of the charge transport material CGM and that of the ... phthalocyanine, squarylium compound, azlenium compound, perylene pigment, ...
www.freepatentsonline.com/7046311.html