Let's quickly introduce Canon Inc. before going into how to maintain Canon Printers and Toner Cartridges. Meanwhile, you can download Canon service manuals here. Canon Inc. is a Japanese founded firm that operates globally and specializes in the manufacture of imaging products such as Photocopiers, Digital Cameras, and Computer Printers. Canon was originally started under the name Precision Optical Instruments Laboratory in 1937 Tokyo Japan by four optical technology pioneers known as Goro Yoshida, Takeshi Mitarai, Saburo Uchida, and Takeo Maeda. The name Canon equally dates further back than the establishment date. Canon was a prototype for a 35-millimeter camera in 1934, Japan's first, with a focal plane shutter. In Japanese, it was known as "Kwanon". Canon now has headquarter operates as wide as America, Europe (divided between London and the Netherlands), Africa, Japan, the Middle East, Central Asia, and Australia.