iroshizuku Fountain Pen Ink Cartridges

PILOT Signature Cartridge (IC-50) & Rotary Ink Converter (CON-40) Only:
Desk Fountain Pen, MR Range, Prera, Cavalier, E95s, Capless

PILOT Signature Cartridge (IC-50), Rotary Ink Converter (CON-40) & Push Button Ink Converter (CON-70):
Kakuno, Explorer, Falcon, Justus 95, CUSTOM 74, CUSTOM 742, CUSTOM 743, CUSTOM 845, CUSTOM Heritage 912, CUSTOM Heritage SE, CUSTOM Urushi, Namiki

Cartridge-Converter: A cartridge-converter fountain pen can use either ink cartridges or an ink converter. The converter is a removable and refillable unit that replaces the cartridge. It allows users to draw ink from a bottle, providing more ink options than cartridges alone.

Vacuum Filler: A vacuum filler fountain pen utilises a vacuum mechanism to draw ink into the pen's reservoir directly from an ink bottle. By compressing and releasing a mechanism on the pen, the vacuum is created, pulling ink into the pen. It offers a larger ink capacity than cartridge-converter pens and is relatively easy to refill.

Piston Filler: A piston filler fountain pen employs a piston mechanism built into the pen's barrel. By twisting the end cap, the piston moves, creating a vacuum that draws ink into the pen from an ink bottle. This mechanism also provides a higher ink capacity compared to cartridge-converter pens and allows for easy refilling without the need for a converter or cartridges.

A combination of the Japanese words: ‘iro’ 色 meaning colour and ‘shizuku’ 雫, translating to dew or droplet.
PILOT iroshizuku reflects our mission to distill the unique beauty of the Japanese landscape into every colour droplet found in each bottle of fountain pen ink.

No - most fountain pen inks are water-based/water-soluble and the rich, vivid colours available within the PILOT iroshizuku range could not be achieved with a waterproof formula.

The advantages of water-soluble inks are that they are more well-behaved and require less maintenance when used in fountain pens. With the pigments or iron gall particles that are used in waterproof inks, there is a risk of clogging or damaging your fountain pen, especially if left in it for a long period of time.

Another enjoyable aspect of using water-soluble inks, especially when sketching and painting, is the ability ‘pull colour’ from the ink like you would with watercolour paints. Further dimension can be added to a sketch when using a wet paintbrush.