Matsushita Electric Industrial Co., Ltd.

Kimitoshi Terasaki

Hiroshi Watanabe

Yuji Hirai

Tatsuya Hirota

Shuichi Kuriyama

Yoshikazu Katsumata

Masahiro Nakashima

Ryoichi Egasira

A printer includes a supply shaft wound with unused film including contrast agent, a winding shaft wound with used film including used contrast agent, rotation-speed detector for detecting a rotation speed of the supply shaft, and remaining-amount detector for determining an amount of unused film from the detected rotation speed detected. In the printer, the remaining amount of unused film such as ink film, roll paper or the like can be determined accurately.

Printer

An in-house communication system comprises a PBX and a line switching device 15 electively connected to a telephone 18 or a facsimile equipment 17 in response to a designating signal sent from an intended party designating signal sending device 6 or 42 of the PBX, thereby providing both facsimile and telephone service directly available in each guest room of a hotel without renovating the telephone wiring in the facility.

In-house communication system for transmitting and receiving both voice

Growing community of inventors

Saga, Japan

Kimitoshi Terasaki