About JIS of pencil

Pencil JIS was established in 1951 and has contributed to the improvement of pencil quality in Japan for about 50 years, but in 1998 the item designation was canceled as part of the deregulation and i...

https://www.tombow.com/en/mamechishiki/p24/

About the shape of the pencil axis

When I have a pencil, because it is three fingers, it is be able that the number of times is correct. In general, it is said that it is rolling. There are many circular axes in colored pencils, and i...

https://www.tombow.com/en/mamechishiki/p23/

The length and thickness of the pencil

The length is 172mm or more in JIS standard. The first person to decide the length closest to this is Germany Luther Farber. It proposes to "7 inches (17.78 cm)" around 1840. This length is said to h...

https://www.tombow.com/en/mamechishiki/p22/

Core differences

The difference in the core is mainly in the grain size of graphite and clay, in other words, the technique and nerves are used for grinding, refining and processing of raw graphite as a high-grade cor...

https://www.tombow.com/en/mamechishiki/%e8%8a%af%e3%81%ae%e9%81%95%e3%81%84/

Pencil Price Difference

There is a price difference in a pencil first, it depends on the difference of the core. The difference in the core is mainly due to the granularity of graphite and clay, or fineness. There is a diffe...

https://www.tombow.com/en/mamechishiki/%e9%89%9b%e7%ad%86%e3%81%ae%e4%be%a1%e6%a0%bc%e5%b7%ae/

About the types of colored pencils

Separating the colored pencils from the shape is divided into the one that the entire tree axis, the paper winding, and the axis are the core. Although the wooden axis colored pencil is a very common...

https://www.tombow.com/en/mamechishiki/p18/

What do you mean by the thickness of a pencil?

In JIS, the reflectance when written under certain conditions is defined as 0.30 ~ 0.47 in HB, otherwise it is good if the upper and lower degree is not reversed respectively BASED on HB. It is said t...

https://www.tombow.com/en/mamechishiki/p17/

What is the degree and concentration of the core?

It is a symbol from 6B to 9H representing the thickness and hardness of the pencil core. The core of the pencil is from stiff to soft, depending on the proportion of graphite and clay, for example HB ...

https://www.tombow.com/en/mamechishiki/p16/

Color Pencil Core Ingredients

The core of the colored pencil is made of coloring, extender pigment and wax. Looking from the ingredients, it is oily. After you draw a picture with colored pencils, you can dissolve the water by mel...

https://www.tombow.com/en/mamechishiki/p15/

A tree used for pencils

Pencils are mainly used in North American incense Cedar (Hinoki). Wood is a natural recycling resource and environmentally friendly material. Trees used for pencils are also planted and managed well....

https://www.tombow.com/en/mamechishiki/p14/

Clay used for the core of a pencil

Pencils use Germany clay. Although the clay can be taken Japan, there is plasticity suitable for the molding of the pencil core, the crystallization proceeds at a relatively low temperature, the physi...

https://www.tombow.com/en/mamechishiki/p13/

Graphite used for the core of a pencil

Graphite (graphite graphite) is also known as a stone ink and is naturally produced as a companion of Diamond and Coal (allotrope). Unlike the same fellow coal, it has a layered structure and is slipp...

https://www.tombow.com/en/mamechishiki/p12/

Pencil Paint

In general pencils, oily paints are used. I use the undercoat paint to flatten the surface of the tree, the middle coating to color, and the clear which produces the gloss of the surface and finish it...

https://www.tombow.com/en/mamechishiki/p11/

Is there a lead in the pencil?

Lead is not included. The core is made of graphite and clay. Graphite is made of carbon and is a fellow of coal and Diamond (allotrope). In addition, lead is not included in the paint of the surface....

https://www.tombow.com/en/mamechishiki/p10/

The inventor of the pencil with rubber

In 1858, an American Mr. Lippmann was invented with a rubber pencil. He thought that the eraser which had been put Plastic Eraser on by the side during the drawing disappeared soon, and it was trouble...

https://www.tombow.com/en/mamechishiki/p09/

History of the pencil industry

In the Meiji era, a civilization enlightenment was created, and it was imported in large quantities. In 1885, 25,750 Gross, and in Meiji 38, statistics that were imported about ten times remain. The ...

https://www.tombow.com/en/mamechishiki/p08/

History of Colored pencils

The oldest colored pencil of the Japan remains the handwriting written with a red pencil in the ancient manuscripts of the Himeji shrine, but the red pencils themselves do not exist....

https://www.tombow.com/en/mamechishiki/p07/

History in pencil Japan

It is said that the oldest pencil in the Japan was presented to Tokugawa Ieyasu and was used. It is now stored in the Toshogu Shrine of Kunnoh Mountain. It is said that Ieyasu actually used it, but i...

https://www.tombow.com/en/mamechishiki/p06/

History of pencil paper

An epoch-making manufacturing method such as a paper pencil was born by the climate not caught in the tradition and the history of the United States. At that time, the tree which suited the pencil was...

https://www.tombow.com/en/mamechishiki/p05/

History of the pencil axes

The age only of the stone ink seems to have used the lump of thinly sharpened graphite by using the thread and the wire, and sandwiching it by the board of the tree, and covering it with something lik...

https://www.tombow.com/en/mamechishiki/p04/

Background of the core improvement

The discovery of graphite chunks made a huge sensation in European society, which was struggling to write drawings and letters at the time, and was hit explosively. The price was soaring, and the lump...

https://www.tombow.com/en/mamechishiki/p03/

History of the Pencil core

Graphite (graphite) was discovered in the Cumberland Mountains of the Elisa Vèbes in 1564, England. In the beginning, the vein was dug up, and the improvement research was advanced although the graphi...

https://www.tombow.com/en/mamechishiki/p02/

The etymology of a pencil

The core made of graphite and clay is called "pencil" in the Japan the thing which sandwiched with the tree. In English it is wood cased pencil, and it is pencil to omit it in the Japan. It is though...

https://www.tombow.com/en/mamechishiki/p01/

Is there any harm to lick the pencil lead

Pencils are made by baking graphite (coral mate) and clay. Tombow's products meet the standard value of hazardous substances such as heavy metals according to the safety standards for heavy metals spe...

https://www.tombow.com/en/faq/01p/

How to remove accidentally dropped glue

If it is dropped on clothes, please wash the part with water at about 80°C. If it is dropped on floor or wall, wipe it with hot water as well....

https://www.tombow.com/en/faq/02g/

Concept of Tombow

Tombow is at your side, always. If stationery had not been by the side of people, neither verses of famous poems nor the world-changing inventions might have ever been born. If station...

https://www.tombow.com/en/concept/

Corporate

About Tombow Company Profile Message from CEO Company Histo...

https://www.tombow.com/en/corporate/

What is the replacement cartridge list

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https://www.tombow.com/en/faq/07c/

What is the time limitation of pencils

The barrel and the lead of pencils do not get rotten, but pencil's condition gets worse in extremely dry or humid environment. The better the storage state, the more semi-permanently available. The ol...

https://www.tombow.com/en/faq/08p/

How to refill the cartridge

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https://www.tombow.com/en/faq/09c/

What is the replacement cartridge list

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https://www.tombow.com/en/faq/10e/

How to refill the cartridge

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https://www.tombow.com/en/faq/12e/