Iroshizuki Ink

Colours: Morning Glory (asa-gao), Hydrangea (ajisai), Asiatic Dayflower (suyu-kusa), Deep Cerulean Blue (kon-peki), Moonlight (suki-yo), Peacock (ku-jaku), Dew on Pine Tree (syo-ro), Forest Green

0reen (shin-ryoku), Autumn Shower (kiri-same), Old Man Winter (fuyu-syogun), Crimson Glory Vine (yama-budo), Azalea (tsutsuji), Autumn Leaves (momiji), Sunset (yu-yake), Winter Persimmon (fuyu-gaki), Horsetail (tsukushi), Wild Chestnut (yama-guri)

Iroshizuku Fountain Pen InkI read such positive comments about this ink that I put it on the list of inks that I should try sooner rather than later. I am glad I did, and the past few years I have really enjoyed this line of ink. The information I have read indicates the PH level of the ink is above 7 so the ink is considered acid free and archival safe.

This is not the cheapest of the inks you can buy, you are getting stunning colours in a beautiful bottle. I see the ink selling in the $35 US range. My wife gasps everytime she sees a new bottle on the desk as she has been with me at stores and knows the cost point of this ink.

I found the bottle is well designed in that it is tall and narrow so getting a large nib fully submerged in in is very possible. The opening at the top of the bottle is wide enough for a large pen, like a M1000. The bottle is stable enough that if you need both hands on your pen to twist a piston filler for example, the pen can rest, standing, and the bottle is secure.


Tsuki-yo (Moonlight)

Moonlight by Irishizuku


I have really taken to this ink. When my first bottles of various colours arrived, after I finished holding the bottles and admiring at the shape and feel, this was one of the first colours that I tried.

I found the ink to be Smooth flowing, offer no bleeding and have a reasonable dry time.

The colours is a beautiful rich dark blue. The ink lays a line on the paper that is darker than the ink sample shown on web sites and is relatively close to the colour shown on the box.

tsuki-upAs visible in the large scan, there is some nice tones that take place on the strokes. This is written with a Waterman Exception with Stub nib on Boise High Definition 80 pound paper (96 Brightness).

Despite the price I ordered by a second bottle and this is one of the inks that I reguarly use.

From Pilot's web site, Moonlight is meant to represent a blue shade like the night sky, dimly illuminated by moonlight.


tuyu-syogun - Old Man Winter

fuyu-syogun - Old Man Winter

This colour was a bit of a surprise. I thought it was a blue gray, but later when I found the Pilot web site sure enough it is a mid gray. There is another darker gray available and I may be trying that next.




I have been using this ink on some of my on personal correspondence. The soft grey looks very good on cards for short notes, but I have found the colour a little too subtle for lages of written text.

Good flow. The samples above are written with a Waterman Opera fitted with a Stub Nib on Boise High Definition 80 pound paper (96 Brightness).

From Pilot, the colour, fuyu-syogun is "Old Man Winter", a gray conjuring up the image of the cold, clear air of the severe winter season.

(Jan 2012) As an update, overall the colour is too soft and it has found its way to the very back of my ink cupboard. It is not one of the colours that finds its way into regular use. I tend to like bolder colours. I am just not a grey ink person.

shin-ryoku (Forest Green)

shin-ryokuI tend to use green inks on a regular basis. The Forest Green (shin-ryoku) is a good solid green, that is pleasant on the eye. Some greens can be jarring. This colour looks good in both personal and business writing.

Flow is good and the ink has a reasonable dry time.

Oh yes, it comes in the most attractive oval-shaped bottle.


yama-budo - Crimson Glory

yama-budo - Crimson Glory

Crimson Glory Vine

yama-budoThe is like a burgundy, but with a slight blue undertone. You see that when you look at a page written with this ink, and say one of the true reds like Hitchcock Red by Montblanc.

As with all the colours in the line that I have used, this is a good flowing ink, and it has performed well in a number of pens. The dry time is very good, at about five seconds its dry.

The samples above are written with a Waterman Man 100 with a Stub Nib on Boise High Definition 80 pound paper (96 Brightness). Good performance also on 100 pound card stock.


syo-ro (Dew on Pine)

syo-ro - Dew on Pine

syo-ro irishizuhu ink

syo-roDew on Pine Tree (syo-ro) is an interesting green. Rich in colour, with a bit of blue tone this solid looking colour fits into both business and personal correspondence. I have started to work my way through the various colours. I must admit the stunning bottle is what pulled me to this ink. But now that I have been using them, it is really all about colour and performance.

As with the other colours that I have used, this ink has good performance. The colour reminds me of Blue Suede in the Private Reserve line, but this ink dries within five seconds to a nice flat finish. There is no stickiness to the ink.

ku-jaku - Peacock

ku-jaku - Peacock

Peacock - Iroshizuku

ku-jakuSometimes I buy an ink and the colour and name just don' t five. Not with this ink. Iroshizuku's Peacock (ku-jaku is a tone that one would expect with the name, it is similar to many turquoise or South Sea Blues available. I found the ink to have more blue values than the colour swatches on the web sites.

I ordered this ink as I thought it would be the perfect colour to be the flagship colour for my OMAS 360 Vintage Teal fountain pen. It is just the colour this pen needs.

The ink has good flow and I have been using it in OMAS, Delta, Stipula, Waterman and Aurora pens. There is some nice shading showing in the strokes, especially if you write with a broad nib. Performance is similar to the other colours. Good dry time, in about five seconds it is dry with no smearing. No feathering.

aso gao - Morning Glory

asa-gao - Morning Glory Blue


Iroshizuku's Peacock (ku-jaku is a tone that one would expect with the name, it is similar to many turquoise or South Sea Blues available. I found the ink to have more blue values than the colour swatches on the web sites.

I have recently ordered this ink again to be the ink for my OMAS 360 Vintage Teal, it is a great combination.

The ink has good flow and there is some nice shading showing in the strokes, especially if you write with a broad nib.

iroshizuku asa-gao

asa-gao (Morning Glory Blue)

I have been enjoying the iroshizuku inks now for a little more than a year. I find the inks to be of good quality and all but two of the colours I have used to very real favorites. Of course the bottle, well I call it a classic piece of art. Big and heavy in the briefcase, but very nice to hold, and it looks great on the desk.

asa-goa - iroshizzuku


So it was time to re-order and one of the colours I selected was asa-gao, Morning Glory Blue. It is a bright blue, it nicely stands out on the page and has a very crisp appearance. Compared to ajisai (Blue Hydrangea) which I found far too light, this has enough of a bold statement that it quickly became an ink I just used and used.

I found the flow to good. It had a reasonable dry time, with the ink drying in under 5 seconds. It is not a water-proof ink, but if I dipped my finger in water, and then touched a page of writing there was some smearing, but the ink jut not just lift off the paper.

I have used the ink my my newest pen, the Delta Oversized Dolcevita with a stub nib, and the ink has performed very well.


Deep Ceurlean Blue

Deep Ceurlean Blue (kon-peki)

kon-peki - Deep Ceurlean BlueI must admit, this ink was a bit of a surprise. I guess that is because I never had a reference for the colour of ceurlean. Now that I looked up colour sames I see that the ink is of that tone. I was expecting, however, a deep rich marine blue. Not so, the ink is lighter, brighter although it has good colour saturation.

I went from filling up my pen and thinking I would not use this bottle of ink, to using if in a number of pens and coming around to quite liking it. I still would take some of the darker blues in the line as a preference.

The performance of the ink is good. It has worked well in a number of different lines of pens (Delta, Stipula, Waterman, Laban), the ink dries to a nice flat finish - no stickiness to this ink nor that annoying shine, and the ink dries well within five seconds.

Skin-kai - iroshizuki ink

I always find getting a bottle of ink as a gift a real treat. So when a friend gave me a bottle of shin-kai by iroshizuku I was very pleasantly surprised. For a couple of reasons. I like the brand. I love the bottle. And, I love the rich blue black colour.

skin-kai iroshizuku inkLike most of the iroshizuku inks, the performance of this ink is very good. I have been using it in a Delta Chatterly Star, with the fusion nib in stub. That pen leaves a good broad line of ink on the page, and where some inks don't come across with the broad strokes, shin-kai is very good.

I have also loaded an OMAS 360 Vintage and Waterman Man 100 and all the pens are liking this ink.

The flow is regular, not an overly wet flow, and best of all, no sheen or stickiness to the ink when it dries.

shin-kai by iroshizukiOf course one of the things that I really like about the line of inks is the bottle. This is a very attractive bottle, and functional also. Being tall and narrower than the totally round bottle, it is easier to fill pens with a large nib. Also, there is a little indent in the bottle of the bottle, and the nib tip nicely rests in this indent which helps as the level of ink goes down.

The bottle looks great on the desk, there is a very large clear glass base. It simply looks good on the desk.

chiku-rin (Bamboo Forest)

Bambood Forest

I started looking for an interesting green to replace the Limited Edition Jonathan Swift Seaweed Green ink that I have been using in some of my pens.

I have tried the Bamboo Forest and have already ordered by second bottle.

It is a saoft, easy to take green. On paper you can see the green, however it is a darkish colour. Sometimes I have scanned this and it comes across as a bit gold in tone. Not the way it comes out of the bottle for me.

Performance is good, dries in under 5 second with no smearing. It also is a flat finish when dry, that is no sheen or stickiness to the ink. That is important for me. When I write in a travel journal the last thing I want is a sticky noise as I open a notebook from a great trip.




A delicate orange, not as bold as some other colours, but I would say because of the muted tones, it is easy on the eye when you look at a substantial amount of writing using this ink. Like the iroshizuku line, good performance. Good performance, a reasonable dry time and the ink dries with no stickiness.



Where yu yake is a subtle orange, fuyu-gaki is bold and in your face! I have been liking this ink, although there is a bit of a what I would call a coral tone to the ink. the Caran d'Ache Electric Orange is true orange and probably the one that I will stick with over the long run.

But fuyu-gaki is bright and bold, it has enough punch to the colour that it looks good when writing with a stub nib.

Flow is good, it has been working fine in a variety of pens.




This is the darkest brown in the iroshizuku line of inks that was available at the time. Where some browns have an understone of another colour, yama-guri is pure, dark, brown. I like it, and in some documents it almost comes across like a black ink. The flow if very good. The ink has a reasonable dry-time of under five seconds. So you have a good dark brown, in a beautiful ink bottle. Good combination for me!

But, later when I purchased the tsukushi brown, I found that to be a more intersting colour. See the next sample.




When I was in Paris I picked up a bottle of tsukushi. I wanted a brown ink to use in my Namiki Mt Fuji and Wave pen. ,I found this to be as very pleasant brown and of the two, I would choose this on an ongoing basis rather than the yama-guri colour. It is not as flat as yama-guri as of the two browns, I am leaning towards this for my regular use. Good consistent flow, as with the entire iroshizuku line of inks.