Ricoh Company, Ltd.

Kyoko Takeguchi

Keiji Kunimi

Kei Hasegawa

A method of forming an image includes forming, on a recording medium (P), a special-light responsive image () that includes an image forming material including a special-light responsive image forming material that reacts to special light other than visible light and a special-light irresponsive image () that includes an image forming material including the special-light responsive image forming material. The special-light responsive image forming material of the special-light irresponsive image () is less than the special-light responsive image forming material of the special-light responsive image (), and the special-light irresponsive image () is a prevention image that prevents visibility of the special-light responsive image (). The forming includes forming an overlaid portion () in which at least a portion of one of the prevention image and the special-light responsive image () is overlaid on top of another one of the prevention image and the special-light responsive image ().

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Yamaguchi, Japan

Kyoko Takeguchi