Other

Omron Corporation

Design Automation, Inc.

Keiji Kitagawa

Ikuo Tani

Masahiro Suzuki

Youichi Watanabe

Kiyotaka Akimoto

Shunzou Umegaki

Yuichi Heishi

Keiji Yokose

A graphic data processing apparatus comprising a CPU coupled to an entry device, storage storing graphic data and a plurality of programs and a display, and adapted such that a command mode for drawing a desired graphic form is selected by designating the corresponding desired graphic form in the already displayed graphic forms and a program for drawing the graphic form is automatically selected.

Graphic data processing apparatus using displayed graphics for application program selection

Graphic data processing apparatus using displayed graphics for program selection

A maraging steel is subjected to the aging to have a hardness of more than 500 Hv. A nitrided case is formed to have a depth that is about 20% to 50% to a &frac12; thickness of the maraging steel plate. An endless ring for a metal belt is constructed by the above maraging steel. According to methods of manufacturing the maraging steel and the endless ring, the nitrided case having the depth that is 20% to 50% of a distance from a plate surface to a center can be formed by executing an aging to have the hardness of more than 500 Hv, then executing a nitriding in the nitrogen atmosphere to which organic chloride is added.

Nitrided maraging steel and method of manufacture thereof

Graphic data processing apparatus using displayed graphics for

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Ibaraki, Japan

Ikuo Tani