This is a felt tip brush pen. The tip, rather than a chunk of felt, is a bundle of fibers like a brush. These fibers conduct ink like felt (as opposed to natural bristle or hair which only have ink or paint on the outside). The fibers can be advanced or withdrawn into a collar, adjusting the length. Minimally advanced, the fibers are held closely together and this essentially becomes a felt tip pen as regards line produced. As the fibers advance out of the collar and are longer, the line produced becomes more and more brushy. Different bristle firmnesses are available, just as with brushes - with the commonality that all become a magic marker when withdrawn into the collar.

This system will also help keep your brushes from getting all gnarly and stiff, because the fibers are withdrawn into the pen and capped after use and so spend their off hours bathed in a rejuvenating bath of ink.
-- bungston, Apr 20 2009

If not baked already this should be. I picture the withdrawing mechanism to work like a rag mop with one of those fancy heads on it. Absolutely doable and desirable!
-- blissmiss, Apr 20 2009


yes!
-- po, Apr 20 2009


/like a rag mop with one of those fancy heads on it./

yes, yes.
-- bungston, Apr 20 2009


//...and so spend their off hours bathed in a rejuvenating bath of ink//

This sounds delightful, as does the invention - it sounds like a good starting point for an artist's multi-tool.
-- ryokan, Apr 20 2009


Very good. I know they make a brush tipped marker but nothing adjustable like this.
-- 2 fries shy of a happy meal, Apr 20 2009


I have some of these, except the fibres don't withdraw - you just put the lid on, like a normal felt-tip. I think I bought them in Japan.
-- hippo, Apr 21 2009



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