Monotype fonts were developed by the Monotype company. This name has been used by three firms. Two of them had their roots in "hot metal" or lead type in the printing industry. They did not adapt when the market changed as computer, offset and photographic systems became dominant. These were: * Lanston Monotype Cooperation in Philadelphia, USA * The Monotype Corporation Limited in Salfords, UK A third firm produces fonts for computer use: * Monotype Imaging Inc.