Stationery Tips

Ink of ballpoint pens

Ink Life

■ Oily ink
In JIS, it is possible to write out well even after 15 months from the date of manufacture. The product of the Tombow is guaranteed 24 months. Because there is a lot sign in the wick, it becomes important to confirm it at the time of the purchase.
It is said that the oil can usually be written normally for five years though the longevity is especially long, and depends on the preservation state. Avoid hot and humid places when saving.

Back to Stationary Tips


Digital catalog is available for online reading.

General Info Catalog

General Information of Tombow 2022-2023 Lineup of all products of Tombow

Open the catalog

Eco Info Catalog

Information and lineup of environmental products of Tombow

Open the catalog

Downloadable PDF version is available.

Catalogs can be viewed and saved in smartphone, tablet and PC in use of “iCata” digital catalog service.

Product information in catalogs is created at the time of catalog production. Please note that design, specification and other information may change without notification.