transparent plastic barrel with a (visible) refill cartridge that is divided into 6 sections with rainbow colours, for light and dark paper, metal tip, line width is 0.8 mm, transparent cap
Free-ink technology and wick reservoir A rollerball pen is a writing utensil that, like the ballpoint pen, delivers the ink by means of a small ball at the tip. In contrast to the oil-based, viscous inks used in ballpoint pens, the water-based inks of the rollerballs have a very low viscosity which makes a light, smoothly gliding writing possible. There are two types of reservoir systems for the ink: free-ink and fibre or wick reservoirs.
In rollerball pens with free flowing ink the ink is held in a tank and is forwarded to the writing tip by means of a baffle delivery system and flows evenly onto the paper without any blotches. The baffle system serves to regulate the pressure between the tank and the surroundings thereby working as both the regulator and reservoir and providing a smooth, even flow of ink.
Wick systems store the ink in a capillary reservoir made out of polyester fibres. This system requires a certain amount of space in the barrel and can only be filled to about 70% capacity because otherwise the ink will run out of the tip. Another 30% of the ink remains stuck in the fibre storage compartment in this type of system. The free-ink system, on the other hand, uses up the entire amount of ink and is therefore able to write about twice as long with the same tank size.
A few pieces of information about the term "archival safe": Only pens with archival safe ink should be used to sign checks, credit cards, contracts, bills, etc. This designation is awarded based on tests of the ink on paper in accordance with DIN norms. Three criteria must be met:
The script cannot be erased without damaging the paper.
The script will remain legible even when exposed to liquids like, for example, water, alcohol or other common acids.
The script will remain legible even when exposed to intense light rays for long periods of time.
Paper Poetry gel rollerball pen
Regenbogen (Stift mit 6 Farben), Spitze 0,8 mm
This is Modulor
We Love Material
Whether for design, architecture, model making, DIY, artwork or stationery: over 30,000 articles that make the heart beat faster. For professionals. And aspiring professionals.
Inspiring & Unique
Abreast of all developments in the world of materials: At Modulor there are always new, first-class products waiting to be discovered. In all shapes and colours – and in many instances tailor-made.
Tradición de expertos creativos
Questions about materials? We provide personalized and competent advice. With over 25 years of experience our enthusiasm for materials continues unabated: +49 30 690 360
PayPal, credit cards, direct debit – at Modulor paying is very simple. Pay after delivery? No problem: just select „Invoice“ as payment method.
Envío más rápido
We deliver with our logistics partner quickly and securely – upon inquiry, same day delivery is even available within the Berlin city limits.
A Berlin Original
All the products and even more ideas can be experienced in person at our Berlin-Kreuzberg store. Over two floors and more than 3,000 m².
Sign Up and Get 5€ Off Your Next Purchase
Exclusive vouchers and sale
All the news about Modulor