We are proud to announce something special. From today, Penworld is the place to go for two of the most beloved writing paper brands in the world: Tomoe River and Iroful. For those who have been writing with fountain pens for years, these names need no introduction. For those who are not yet familiar with them: you are about to discover something that will change your writing experience forever.
Why this paper?
At Penworld, we select every product with care. We do not sell writing instruments, we sell experiences. And if there is one thing that completes the experience of writing with a fountain pen, it is the right paper. A beautiful pen deserves beautiful paper. It really is that simple.
Tomoe River and Iroful are not just paper. They are the choice of connoisseurs, the favourite of ink enthusiasts, and the quiet star behind many a stunning page filled with ink, colour and character.
Tomoe River, a legend with a story
Tomoe River was produced for decades by the Japanese company Tomoegawa, and became world-famous for being the only paper that could be so thin and yet perform so beautifully with fountain pen ink. Today it is produced by Sanzen Paper and is available from us as loose leaf sheets and notebooks in A5, B5 and B6, in blank, dotted and grid.
- Ultra-thin 52 gsm, nearly half the weight of regular copy paper, and yet surprisingly robust
- No bleed-through and no feathering, even with wet or broad nibs
- Beautiful shading and sheen:






