Tohoku Ricoh Co., Ltd.

Shigeru Yashima

Hideaki Matsuda

Takanori Endo

Tadashi Yonezawa

Masami Miyake

Seiro Yahata

Sumio Suzuki

Shigenobu Irokawa

A method and a device for determining the amount of ink or similar liquid existing in a container are disclosed. A resonance circuit is arranged on the container storing the liquid. A voltage having a preselected frequency is applied to a drive coil located outside of the container to thereby induce a voltage having a preselected frequency in the resonance circuit. The voltage induced in the resonance circuit, in turn, induces a voltage having a preselected frequency in a sense coil also located outside of the container. The amount of liquid in the container is determined in terms of the voltage induced in the sense coil.

Method and device for determining the amount of a liquid existing in a container

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Miyagi, Japan

Shigeru Yashima