About Nakaya Nibs

Nib is the most important part of a fountain pen. It leads ink from the nib feed to the tip via tines, and make it possible to write characters on paper. For smooth writing, it needs proper flexibility and round tips. It is the life of a fountain pen. Therefore, it needs 55 separate steps in the nib creation process with the utmost care.

Material of the nib

There are 2 types.

1. Gold

Because gold is very expensive, it is used for high-class fountain pens. Gold never rusts nor erodes, and it won't be corroded by sulfuric acid, hydrochloric acid or nitric acid contained in ink. Flexible writing touch is a characteristic of gold nib.
There is 18K and 14K gold nibs in the world, however, Nakaya uses 14K gold nib.

2.Stainless steel

Stainless steel has nearest the same writing touch and strength against acids as gold. As it is very inexpensive it is used for cheaper fountain pens.

Iridosmine is put on the top of a nib. It is alloy made of 65% of Iridium, Osmium, Ruthenium and 35% of platinum and other metals. Its molecules are very fine, harder than any other metal and it is the heaviest metal. Its hardness is next to that of diamonds. Its polished surface shines like silver and runs over the paper smoothly.
14k gold is the best material for a nib

the reasons are:
1. Highly corrosive-resistant so it doesn't rust and lasts for many years of usage.
2. The softness of 14k gold makes for flexible writing touch.
3. Iridosmine can be attached firmly without losing its strength.

Nib point sizes

Bin sizes are differentiated by the width of the writing line. The size is imprinted on the nib. You should check the nib size imprint when you purchase a pen.

NibWidth of the line(mm)Characteristic, usage
Ultra Extra Fine(UEF) / 超極細
(Super Extra Fine)
0.18-0.24 Especially suited for fine numbers and characters, suitable for bookkeeping.
Extra Fine(EF) / 極細 0.24-0.28 For fine numbers and characters, suitable for students' note taking.
Fine(F) / 細 0.28-0.34 For general fine characters, suitable for students' note taking.
Soft Fine(SF) / 細軟
(Flexible Fine)
0.28-0.34 Same line size, but more flexible than flexible. A stamp of the elastic fine is same.  
Medium(M) / 中 0.34-0.44 Smooth writing, suitable for general writing.
Soft Medium(SM) / 中軟
(Flexible Medium)
0.4-0.5 Same line size,but more flexible than medium. A stamp of the elastic medium is same.
Broad(B) / 太 0.44-0.54 Suitable for manuscript, address writing.
Extra Broad(C) / 極太 0.66-0.86 Suitable for those who love broad writing.
Music(MS) 0.9-1.0 A music nib has two slits, so that you can express stubby line without many scratch writing feelings.

*A design on the nib will be changed sometimes without any notice. However, it does not have any effects on writing ability.

Nib design

From the left, pink gold color, rhodium color, ruthenium color (plated), two tone, single tone.
A mateial of nib is the same as reguler nin of Nakaya (K14 gold), we plated several color by plating as below.
These special plating needs an additional cost.

pink gold plated, rhodium plated, ruthenium plated ; $50
two-tone color ; $100

*Music nib*
mono-tone ; $100
pink gold plated, rhodium plated, ruthenium plated ; $130
two-tone ; $150

*Music Elastic nib*
mono-tone ; $200
pink gold plated, rhodium plated, ruthenium plated ; $230
two-tone ; $250

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