Ogatsu SuzuriOgatsu Inkstones

The history of Ogatsu Suzuri is very old, and it is said that we sail up early in the Muromachi era.
It gives both sides, and it has a pain, and inkstone is praised, and, at the beginning of the Edo era, it is informed by Masamune Date who came for deer hunting to deportation (toojima) of Oshika Peninsula to have been given reward.
In addition, nidaimokuchushu of the Dates admires the good skill, and we employ, and it is said to Date feudal clan that raw materials of inkstone did not permit that person general as "stopping mountain" (protected mountain) adopts stone in produced mountain in masters of inkstone.

The origins of the Ogatsu Suzuri can be traced back to the Muromachi period (1392-1573). Then, at the beginning of the 17th century, two inkstones were presented to the military commander, Date Masamune, who was on a deer hunt on Toojima, an island off the Ojika Peninsular. It seems that he was highly delighted with the stones and reciprocated generously.
Date's son, Tadamune, also recognized the skill with which these inkstones were fashioned and engaged craftsmen to make inkstones for the clan. It then seems that he placed the mine from which the stone was sourced under a monopoly and did not allow outsiders to mine there.

The most important part of an inkstone is the houbou, or bed on which an ink stick is rubbed in a little water. It is the texture and perfect degree of hardness of this surface which is a particular feature of the Ogatsu Suzuri. The stones are made from a type of slate and are either black or a deep indigo in color, have a rich luster and a smooth surface. Some highly fashioned, others are almost as they were mined.

  • Notification

    skills and techniques

    Building stones to use "stone wound" of "crack" or "crack" it be said that there is not.

    Use "only "only carving" and edge point of a sword" for "border stand".

    When look good with "rough carving", "only using chestnut" "carve chestnut"; osurukoto.

    After having made "rough carving", do "final stage of carving" by manual labor.

    When we make "decoration carving", we assume "hairlines" or "relief".

    Use "whetstone" for "finish polish".

    Finish is thing by any of the following.

    After having done "lacquer roll" when it is to thing needing "lacquer roll", do "polish finish" or "fried finish".

    When you are to thing which does not need "lacquer roll", do "seal finish".

    Raw materials

    Assume building stones Ogachi stone.

    Assume lacquer natural lacquer.

  • Work scenery

    As for the Ogatsu Suzuri managed as industry for a long time, it was divided the work with quarrying, cutting of Ogachi stone, sand pickpocket (work to smooth off the surface of uncut stone with pickpocket keyboard) and carving. We introduce process finishing inkstone from carving this time.

    Process 1: Border stand

    We make relationship from one piece of stone and expose part of handle of chisel to shoulder, and write center of gravity and centralize power of the whole body. Technique to draw easy curve with strong power to carve stone is necessary.

    Process 2: Rough carving

    We carve sumi temple (part doing sumi) and the sea (place where sumis which we ground collect) roughly. We carve rough depth at a stretch.

    Video is played when we click image

    Process 3: Sea carving

    1/3 of the whole stone becomes part of the sea. The depth is 2/3 hodo of thickness of the deepest, by the way, overall stone. We carve while touching, and checking stone with area, depth of this sea by hand. Gentle slope from this sumi temple to the sea decides water and flow of sumi which we ground.

    Process 4: Polishing

    We divide inkstone which carves, and went up into three phases of middle polishing, outside polishing, finish polishing and, using whetstone, waterproofing paper, polish. Middle polishing is work to polish the point most to grind sumi in inkstone. We polish while checking the touch carefully by hand.

    Video is played when we click image

    Process 5: We flatten bottom

    We flatten bottom afterwards. Sumi lose well, and descent from sumi is spoiled if bottom is not reliable with exquisite inkstone either. We fix bottom supporting inkstone while applying power in the whole equally. It needs considerable power like carving to polish stone. After all we centralize power of the whole body in arm and we attach force and polish bottom and fix.

    Process 6: Finish

    Finish finishes with polish using lacquer, and there are three methods of fried finish, seal finish using sumi. Was different each; is shiny.


  • Close-up

    Stationery Ogatsu Suzuri which spells the northeastern history

    Book which spells the history, and is art. Inkstone which was one of the tools being high quality and thing that it was easy to use above all have been expected. We make use of materials of Ogachi stone in Ogatsu Suzuri, and technique of carving that flow of sumi which we ground was calculated exhaustively is condensed.


    We write, "we look at stone" and read with "inkstone" (inkstone)

    It letting you be familiar with water while sharpening particle of warm sumi with inkstone to grind sumi. "It does not become inkstone if we carve any stone in the form. Saying look at stone well to know on seeing character called inkstone, and it is not to inkstone if is not stone which was correct in condition of inkstone; Chiba of Ogatsu Suzuri production sale cooperative association. With condition of stone becoming the inkstone,

    ・What edged point (gurnard) which does duty of tooth when we grind sumi is included in in a good balance
    (edged point does duty such as tooth of grated radish)
    ・Having low water absorption rate to let particle of sumi which we ground adjust to water
    ・Do not change in quality in chemical action and long time either
    ・Thing that seems natural of the beautiful surface of a stone

    Stone which we serve as all these conditions and prepared is Ogachi stone consisting of dislocation more than underground 250 million years of the here Ogachi whole area ago.

    Receive jusumi*hashira, ga sumi. If sharp temper is not inkstone mushrooming in a good balance, we cannot grind sumi and we receive and do not do sumi. Ogatsu Suzuri that the balance is splendid

    Combination ... nature Container and lid are of the same material inkstone ... with cover which merely has only one in the world belonging to

    Ogachi stone which thing which mud of the bottom of the ancient river was deposited hardens, and there was is dislocation itself 250 million years ago. In other words, we can relatively break neatly in a certain direction. Inkstone with cover is made using this property. Spa tto falls below Ogachi stone and carves one to inkstone, and one is already finished as cover. Rim fits in suddenly when we put both sides together in state breaking in. Combination of inkstone and covers that there is only only one is stone naradehadearu of nature in the world decided at moment when we broke stone.

    Natural Container and lid are of the same material inkstone with. The same mouth which we cut simply because it is Ogachi stone that the surface of a stone is beautiful is kept alive

    Ogatsu Suzuri which performed Prince Masamune Date habitual use of unexpected form

    You hear with "inkstone of Prince Sendai feudal lord Masamune Date habitual use", and what kind of inkstone will you imagine? We will remember brilliant thing that being heavy and sculpture which is big, and is splendid around have most. Here Ogatsu Suzuri Kyoto Museum of Traditional Industry has Ogatsu Suzuri (replica) which Prince Sendai feudal lord Masamune Date of Sendai Municipal Museum possession used habitually. However, we are surprised at thing that the form is too simple, and is small. Saying "there is not waste functionally small so that carrying around is easy either and habitual use article to take to battlefield is thing with article."; Chiba of Ogatsu Suzuri production sale cooperative association. It is assent I see. Would Prince Masamune be writing letter in the war using this inkstone in battlefield?

    It is said that it is technique that it is difficult so that it is impossibility that make inkstone of Prince this simple Masamune habitual use and the same inkstone. Seemingly it is small square inkstone, but corner describes beautiful roundness to cry in edge when we see well. In addition, part (sumi temple) grinding sumi swells, and ink which we were able to grind flows from both sides through the sea (place where sumis which we ground collect). Flow of sumi is calculated exhaustively and edge, sumi temple and round part describe smooth curve in all right and left of them without little confusion. In this small inkstone, the best technique is condensed.

    • Inkstone of Prince Masamune Date habitual use that the refined best technique is jam-packed so as not to match current measurement technology either

    • Flow of sumi which we ground, depth of the sea and edge round beautifully, sumi temple……. In this small inkstone common at a glance, there is point to stare wide-eyed at a lot

    Craftsman profile

    Kimio Takahashi (takahashitaneo)

    It was born in 1932.
    We become inkstone artisan since 21 years old.
    "After all it is the most difficult to make beautiful chestnut." (roundness)


    Origin of the name of hunting-prohibited mountain

    Hunting-prohibited mountain which faced Gulf of Ogachi has been ever called "stopping mountain". After giving two inkstones when Prince ancestor of a lord Masamune Date came for deer hunting around this Ogachi, there was when we had a pain and were pleased to grant praise, reward and after all nidaichushuko admired the skill skillful in again in occasion of deer hunting and did Master inkstone Date feudal clan employing and mountain which did, and produced inkstones with hunting-prohibited mountain and did not seem to permit general digging. Hunting-prohibited mountain is owning individual now.


    • One side of Ogachi stone except inkstone is seen. Are you used for rotation of our life unexpectedly?



Industrial art object name Ogatsu Suzuri
Phonetic symbol ogatsusuzuri
Classification of industrial art object Writing tools and Abacus
Main product Native rock inkstone, inkstone with natural Container and lid are of the same material, special inkstone
Main production area Miyagi / Sendai-shi, Ishinomaki-shi Ogachimachi, Mono-gun
The designation date May 22, 1985

Contact information

■local production associations

Ogatsu Suzuri production sale cooperative association
2-25, Ogatsuchokamiogatsu, Ogachimachi, Ishinomaki-shi, Miyagi
ogatsu shop ko okugai
TEL: 0225-57-2632
FAX: 0225-57-2632

■Associated exhibit space, facility


Part which is the most important for inkstone is edged point (gurnard) which plays a role as tooth when we grind sumi. Roughness, thinness, hardness, the softness of this sharp temper are just right for characteristic of Ogatsu Suzuri; is that is balanced. Color is rich with black or dark indigo blue; is shiny, and the surface of a stone is smooth.

The most important part of an ink stone is the griding bed of the stone, which serves as the teeth which grind the ink stone. Ogatsu Suzuri ink stones are renowned for the perfect balance of roughness, fineness, hardness and even softness found in the grinding bed of their stones. The stones are either black or dark indigo, and have a rich, glossy luster and a smooth finish.

How to make

Ogatsu Suzuri is praised as superior inkstone from old days of the Muromachi era and thereafter is proud of the history and tradition of 600 years. By the traditional handmade manufacturing method, we carve in relief with one arm of craftsman made with inkstone carefully.

Ogatsu Suzuri ink stones have been renowned since the Muromachi period, and boast a history and tradition going back over 600 years. The stones are still hand-crafted in the same painstaking traditional methods, and the diligence and passion of a single craftsman is responsible for bringing each individual ink stone to completion.

Voice from production center

Nature of a rock comprises characteristic of signature inkstone "quality ink stone of tuanshi stone stone" (tankeiseki) and "floating pattern stone" (ramonseki) of Chugoku in black hard slate (we release), and Ogachi stone becoming uncut stone of Ogatsu Suzuri has the smooth surface of a stone of black or gloomy indigo blue, and-colored person from sumi is good and is special dish to give elegant feeling.