0.3 mm thicker than the Spare Leads ?

The "core" and "diameter" are defined by JIS standards. The 0.3 mm core will be exactly 0.38 mm on average and will be close to 0.4 mm thick. Each manufacturer is manufactured in accordance with this ...

https://www.tombow.com/en/mamechishiki/s61/

About the color Spare Leads

There are two kinds of color Spare Leads . The same as colored pencils, a non-calcined core made by extrusion molding of pigments, waxes and resins, and boron, talc, mica, and clay minerals are formed...

https://www.tombow.com/en/mamechishiki/s58/

Performance required for Spare Leads

1. Be able to write thick The grain of the core is fine, and it adheres to the fiber of the paper snugly, and settles. 2. Strong There is no core break during writing. 3. Smooth There is no catch...

https://www.tombow.com/en/mamechishiki/s57/

How to make a Spare Leads

The Spare Leads is made through the process of mixing → kneading → extrusion molding → firing → immersion oil → cutting → packaging. It is kneaded by a roll to increase the affinity of the graphite an...

https://www.tombow.com/en/mamechishiki/s56/

Raw material for Spare Leads

The first was the sintering of the clay, which is the main raw material, the graphite and the binder, as well as the pencil core. However, it was not possible to obtain enough strength when the core d...

https://www.tombow.com/en/mamechishiki/s55/

History of Spare Leads

Since the release of the Eversharp in 1838, the Spare Leads was made of graphite clay (same as pencil core), with a core diameter of 1.0 and 1.5 mm length of about 30mm. However, in 1962, a 0.5 mm syn...

https://www.tombow.com/en/mamechishiki/s54/

Ink Life

■ Oily ink In JIS, it is possible to write out well even after 15 months from the date of manufacture. The product of the Tombow is guaranteed 24 months. Because there is a lot sign in the wick, it b...

https://www.tombow.com/en/mamechishiki/m51/

Ink raw Materials

■ Oily ink Dye + solvent + resin is a basic configuration. This is almost the same as the composition of the marker, but the viscosity is different (viscosity of starch syrup and honey position). ■ ...

https://www.tombow.com/en/mamechishiki/m50/

History of water-based ballpoint pen

The history of the water-based ballpoint pen was branched from the oily ballpoint pen , and it was started in 1964 by auto company. After that, the improvement was made, and it was released from the d...

https://www.tombow.com/en/mamechishiki/b48/

History of oily ballpoint pen

Development as a practical thing is the beginning to have been conceived in Hungary in 1943. In fact, the history of ballpoint pen is only sixty years. In 1944 the following year, the Eversharp Compan...

https://www.tombow.com/en/mamechishiki/b47/

English name of ballpoint pen

In the United States, the oily ballpoint pen Pen is called a ball point pen. The thing about the water-based ballpoint pen is called a roller pen. By the way, it is called K-gel Punkt shreiber in the ...

https://www.tombow.com/en/mamechishiki/b46/

How to fit the ball

It is a very small ball, and it is very strange why it is turning well without falling below. To make a chip, a thin wire-shaped metal is cut in a cylindrical shape, the end is truncated to a conical ...

https://www.tombow.com/en/mamechishiki/b44/

Writing distance

You can write about 1000m at 1500m and Carnosine Vizno in the office ballpoint pen (BR-NF Core) of the Tombow Pencil ....

https://www.tombow.com/en/mamechishiki/b43/

The life of the written character

Oil is said to have more than 50 years when it is a normal storage state as a document. At present, it has been more than 50 years after the release of ballpoint pen , but the documents of those days ...

https://www.tombow.com/en/mamechishiki/b42/

Advantages of ballpoint pen

It is a ballpoint pen pen that uses the Writing ball as a pen tip, but why is it widely used worldwide? ○ Omni-Directional: vertical, horizontal, and naname because it can be written smoothly in any ...

https://www.tombow.com/en/mamechishiki/b41/

Water resistance of water-based ink

It is possible to have some degree of water resistance even if it is aqueous, though not as oily. The secret lies in the pigment, and it can be said that the pigment is more water resistant than the ...

https://www.tombow.com/en/mamechishiki/m40/

Variety of pigment

Dye or pigment is used in some stationery. To briefly explain the difference, dyes are like sugar water in which color particles are dissolved in a liquid, and pigments are like ink liquid in which c...

https://www.tombow.com/en/mamechishiki/m39/

The ink of one of the twin tip disappears first.

For a batting twin, a thin core may not be able to be written first, regardless of which nib you are using. This is because the capillary power of the two nib is different, the ink in the batting is ...

https://www.tombow.com/en/mamechishiki/m37/

Why fluorescent ink looks fluorescent

As can be seen from being a highlighter when expressed in English, it is possible to show the color more vividly by converting the light by sunlight and illumination to the wavelength of a certain lig...

https://www.tombow.com/en/mamechishiki/m35/

The difference between a marker and a sign pen

There is no definite definition, but generally it is called a marker, the thing with the direction of the line width of 1mm or less and the one with the direction with a line width of more than 1mm is...

https://www.tombow.com/en/mamechishiki/%e3%83%9e%e3%83%bc%e3%82%ab%e3%83%bc%e3%81%a8%e3%82%b5%e3%82%a4%e3%83%b3%e3%83%9a%e3%83%b3%e3%81%ae%e9%81%95%e3%81%84%e3%81%af/

History of marking

It is said that the marker which came in from the United States in 1949 is the beginning of the history of the oil marking. In the Tombow was released for the first time in Japan the water marking ca...

https://www.tombow.com/en/mamechishiki/m34/

The marking pen is a Writing of the pressure “zero”

Unlike ballpoint pen and the like, the marking uses a capillary phenomenon, and the pen tip is also responsible for its function, so you hardly need pressure when writing. Because the core is relative...

https://www.tombow.com/en/mamechishiki/m32/

Writing distance

The writing distance varies depending on the type, but it is said that the longest writing is about 1000m in a fine pen and about 100 to 150 m of the highlighter when becoming short. The pen tip and t...

https://www.tombow.com/en/mamechishiki/%e7%ad%86%e8%a8%98%e8%b7%9d%e9%9b%a2/

What is a marking pen?

First, when you think about what you call a marking, it is defined as a pen that is an ink storage body of batting or liquid type and that induces ink to tip nib by capillary phenomenon. And, the mark...

https://www.tombow.com/en/mamechishiki/m28/

Tips for sharpening a pencil with a knife

In order to cut the blade as hard as possible, it is better to use the front of the blade to cut only the wood first, and then use the original blade to make the blade stand and cut the core. The poi...

https://www.tombow.com/en/mamechishiki/p27/

Why pencils are used in elementary schools

In the Ministry of Education, we are promoting the transcription of hard general writing to 3 from small to medium, so that we can "write Japanese easily, clearly and efficiently." In order to do this...

https://www.tombow.com/en/mamechishiki/p26/

How far is the pencil written?

The writing distance that can be written in one pencil (HB) is about 50km. It is an overwhelming long distance and economical compared with other Writing instruments. However, the written load is set...

https://www.tombow.com/en/mamechishiki/p25/

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/

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/