Hagoromo Bungu
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Hagoromo Bungu ( ja, 羽衣文具, lit=Hagoromo Stationery) was a Japanese office supply and
chalk Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Chalk ...
company. It is best known for having produced the Hagoromo Fulltouch Chalk, a brand of
blackboard A blackboard (also known as a chalkboard) is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of ...
chalk. Though mainly sold in Japan and South Korea, the chalk came to be used worldwide for its reported ease of use. Nonetheless, general decline in chalk sales among other factors led to its shuttering in 2015. The announcement of the company's closing led fans to stockpile its chalk. The
South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...
n company Sejongmall eventually bought the Hagoromo brand and much of the original company's equipment and has manufactured the chalk in South Korea since 2016.


History

The company was founded in October 1932 as ''Nihon Chalk Seizosho''. The original factory was located in
Naka-ku, Nagoya is one of the 16 wards of the city of Nagoya in Aichi Prefecture, Japan. As of 1 October 2019, the ward has an estimated population of 90,918 and a population density of 9,693 persons per km2. The total area is 9.38 km2. Geography Naka Wa ...
, but was destroyed in August 1944 during World War II. The company was re-established in 1947 and renamed to Hagoromo Bungu. A factory in the nearby city of Kasugai was completed in 1961, and the offices moved there in 1992.


Success

The company sold over 90 million pieces of chalk a year at its peak in 1990 and held a 30% share of the domestic market, according to Tokyo Shoko Research. Mathematician
Satyan Devadoss Satyan L. Devadoss is the Fletcher Jones Chair of Applied Mathematics and Professor of Computer Science at the University of San Diego.
wrote in 2010 that the Hagoromo chalk can be called "the Michael Jordan of chalk, the Rolls-Royce of chalk". Several other well-known mathematicians and professors, such as
Brian Conrad Brian Conrad (born November 20, 1970) is an American mathematician and number theorist, working at Stanford University. Previously, he taught at the University of Michigan and at Columbia University. Conrad and others proved the modularity theo ...
and
David Eisenbud David Eisenbud (born 8 April 1947 in New York City) is an American mathematician. He is a professor of mathematics at the University of California, Berkeley and Director of the Mathematical Sciences Research Institute (MSRI); he previously serve ...
, also prefer the product. Eisenbud first introduced the chalk to American mathematicians and worked to have it imported to the US; it is now sold on
Amazon Amazon most often refers to: * Amazons, a tribe of female warriors in Greek mythology * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon River, in South America * Amazon (company), an American multinational technology c ...
.


Closing

In October 2014, company president Takayasu Watanabe released a statement announcing the company would stop chalk production in February 2015 and sales in March 2015. Watanabe, Ryuzo Watanabe's successor, mentioned reasons for the closure included the fact that "blackboards are no longer the norm in classrooms" and that "the number of students is also on the wane". In a 2015 interview, Watanabe also cited his declining health as a major reason for the closure.


Final months

The announcement to cease business led to the mass buying, hoarding, and reselling of chalk among its fanbase. By June 2015, Watanabe reported that production continued for a month longer than originally planned and finally ended on 31 March 2015.


Legacy

Hagoromo sold the three custom-made machines used for making Hagoromo chalk. Umajirushi, a Japanese blackboard manufacturer looking to expand their chalk production, bought one. Umajirushi has since launched DC Chalk Deluxe (). Sejongmall, a retailer in South Korea who previously imported the Hagoromo chalk, bought the other two machines and the rights to the Hagoromo brand and continue to produce the chalk in South Korea. Mathematicians consider it indistinguishable from the original product.


Products

The Hagoromo Fulltouch Chalk product line is what the company is most known for. The entire line is marketed as being "dustless". * Fulltouch Chalk: calcium chalk * Fulltouch Large Chalk: calcium chalk, 2 cm in diameter and 11.3 cm in length, available in white, red, orange, yellow, green, and blue * Fulltouch New Poly:
gypsum Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula . It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall. ...
chalk, sometimes known as
plaster Plaster is a building material used for the protective or decorative coating of walls and ceilings and for Molding (decorative), moulding and casting decorative elements. In English, "plaster" usually means a material used for the interiors of ...
chalk * Fulltouch Luminous Color Chalk: gypsum chalk


References


External links

* {{cite episode, title=Mathematicians are looking for Hagoromo Fulltouch chalk, the dream brand of chalk, url=https://www.pri.org/node/82138/popout, date=29 June 2015, series=PRI Office supply companies of Japan Defunct manufacturing companies of Japan Chalk