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Hirosaki Cornerstone Black
Hirayama mannendou is one of the 713 brands in Inktend's built-in ink catalog.
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Specs
Paper & pairing
As a near-neutral tone, it reads as professional and safe for anything from journaling to signatures. 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 Hirayama mannendou
Hirayama Mannendo is a long-established pen and stationery shop in Hirosaki, Aomori Prefecture, Japan, founded in 1913 (Taisho 2). Over its century-plus history it moved from fountain pen manufacturing to retail, and today sells writing supplies, glass pens and original inks with Aomori-inspired colours such as 'Hirosaki Coffee'.
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.