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Zao Spring Blue
Hachimonjiya is one of the 713 brands in Inktend's built-in ink catalog.
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Paper & pairing
Blues and navies are the most broadly "safe" fountain pen colors: legible, professional, and unlikely to raise eyebrows in an office. This ink will behave predictably on most fountain-pen-friendly paper. Cheap, highly absorbent paper (standard copier paper) will dull any ink's saturation and can cause feathering or bleed-through with wetter nibs.
About Hachimonjiya
Hachimonjiya is a bookstore and stationery shop in Yamagata City, Japan, whose history as a business stretches back more than 300 years. Since 2018 it has planned and developed original fountain pen inks and pens in collaboration with Sailor, with colors inspired by Yamagata's landscapes such as snowy Mount Ginzan and local cherry blossoms, and Sailor also runs an ink workshop at its main store.
Storing and using the bottle
Bottled fountain pen ink has an effectively long shelf life when kept capped and out of direct sunlight: most inks remain usable for years. The main risk isn't the ink spoiling, it's a pen sitting inked and unused for weeks: that's what causes clogs, not the ink's age.
Frequently asked questions
Similar shades By colour distance
Color shown is a close digital approximation of a typical swatch, not a calibrated color match.