Sailor Manyo Ink Bottle (Koke - 50 ML) 13-2009-220

Sailor Manyo Ink Bottle (Koke - 50 ML) 13-2009-220

Sailor Manyo “Koke” — 50?mL Ink (13?2009?220)

Sailor Manyo Ink Bottle (Koke – 50?mL)

Inspiration & Series Context

• The Manyo ink series is inspired by Many?sh? (???, “Collection of Ten Thousand Leaves”), Japan’s oldest anthology of classical poetry, which references many plants, nature, and seasonal themes. 

• Koke (?) means moss in Japanese, and the ink is intended to evoke a moss?inspired tone — with green, aqua, blue, and purple nuances. 

• Koke is part of the third edition of Manyo inks (released ~2022), which are marketed as dual?shading inks — meaning that in areas of high and low ink concentration, different shading colors may show beyond just light vs dark of the same hue. 

Color, Shading & Visual Behavior

• Base Hue / Appearance:
   Koke is often described as an aqua blue / turquoise / light aquamarine hue — a cool tone with greenish leaning. 

• Dual Shading / Color Shift:
   In heavier loads or pools, Koke may shift into purple, violet, or green tones — giving multi?hued shading. 

• Shading Intensity:
   Moderate shading is observed — one reviewer notes that on lightly saturated strokes, you see lighter sky?blue tones, and in more saturated strokes, richer blue or teal tones emerge. 

• Saturation / Depth:
   Koke is relatively light to medium in saturation; it's not deeply dark, making the shading differences more visible. 

• Shimmer / Sheen:
   Koke is not a shimmer ink — it contains no metallic glitter. 
   Some users report occasional pinkish / reddish halo / sheen in denser pools / broader strokes under favorable lighting. 

• Water / Washing Behavior:
   Koke is not water?resistant — in water drip tests, color washes fairly readily. 

Physical & Packaging Details

• Volume: 50?mL per bottle. 

• Bottle dimensions: W 53 × D 44 × H 70 mm (Manyo standard) 

• Weight (filled): ~?203.0?g (bottle + ink) 

• Packaging: Comes with a paperboard outer box (approx. 55 × 47 × 76 mm) 

• Bottle design features: The Manyo bottles are square glass, with a decently wide opening to allow filling many pen nibs. 

• Bottle opening: Approx 20.6 mm diameter (per vendor spec) 

• Ink type / base: Water?based dye ink (non?pigmented) 

• Made in: Japan (Sailor) 

Performance & Writing Behavior

• Flow / Wetness:
   Koke is often characterized as medium flow — it doesn’t gush but remains smooth. Some users note that lighter inks like this can feel a bit drier (especially with fine nibs). 

• Dry Time:
   In one test (dip nib on Tomoe River / nice paper), dry time was ~5 seconds (for lighter strokes). 

• Start / Hard Start Behavior:
   Koke is generally easy to start; being a dye ink, it flows readily when wetted. 

• Feathering / Bleeding:
   On good paper, no significant feathering; on lower quality or super absorbent paper, some show-through is possible. 

• Ease of Cleaning / Maintenance:
   Because it is relatively light in color and a dye ink, Koke is reported to be easy to flush and clean out. 

• Behavior in pens / compatibility notes:
   Because of its lightness and shading nature, Koke may show its best character in wetter pens, broader nibs, or pens that deliver more ink, so that the shifts in tone are more visible. 
   Some users caution that Koke (and many Manyo dual-shading inks) may feel “scratchy” or more tactile in certain pens — perhaps due to lower lubrication or more surface interaction. 
   Also, there are user reports of pairing issues: for instance, someone found Koke felt “slippery” or “odd” in a particular pen (Pilot Custom 74) though it worked fine in others. 

Appeal, Use Cases & Tips

• Artistic / expressive use: Koke is ideal for those who like inks that show interesting shading, color shifts, and visual depth in writing or sketching.

• Subtle but lively: Its base aqua tone is gentle, but the dual shading allows personality and variation, making plain lines more engaging.

• Best with appropriate paper: To see the full effect — the shifts, the shading — use high-quality fountain-pen?friendly paper (Tomoe River, Rhodia, etc.).

• Pen & nib choice: Broader, wetter nibs and pens with generous ink flow will better showcase the color transitions than very fine or dry nibs.

• Avoid very absorbent / rough paper: On such paper, the light tones may wash out, and shading or secondary tones may be lost.

• Enhancing performance: If the ink feels a bit dry, some users carefully add a drop of flow improver or a mild surfactant (e.g. a trace of dish soap) in a converter — but test carefully, as too much can cause feathering or other issues.