 ohto co., ltd.(ãªã¼ãæ ªå¼ä¼ç¤¾ï¼is a japanese pen manufacturing company selling the "ohto" brand. the company was established in 1929 as a manufacturer of dyes and ink. in 1949, the company became famous as a pen manufacturer after they manufactured the world's first ball point pen with chrome ball. this was also japan's first ballpoint pen. since then, the company have introduced writing instruments such as the roller pen, ceramic roller pen, single blocked strong needle tip, and needle tipped soft ink roller pen, ceramic roller pen, ceramic refill (c-300 series), soft ink roller pen, free ink roller pen, and promecha drafting pencil ==history of ohto== * 1929 established in tokyo, japan, as a manufacturer of dyes and ink * 1949 manufactured the world's first pencil-shaped ballpoint pen with chrome ball. this was also the first "made in japan" ball point pen. * 1960 developed a non-smudging ballpoint pen ink with resistance to fading. * 1963 manufactured the world's first water-based ball point pen (present-day roller pen). * 1963 manufactured ballpoint pens with tugsten carbide balls using polymide resin, first in the world. * 1977 introduced the rubber grippered pen, first in the world. * 1981 introduced world's first ceramic ball roller pen. * 1991 developed pigment ink waterproof/fadeproof roller pens. * 2000 introduced single blocked strong needle tip, first in the world. * 2006 started using ceramic ball in gel pen, to give longer shelf life to gel pens, named cera-gel technology. == external links == * ohto co., ltd.
Manufacturing_companies_of_Japan