Matsushita Electric Industrial Co., Ltd.

Masahiro Nakashima

Takashi Watanabe

Tatsuya Hirota

Shuichi Kuriyama

Yoshikazu Katsumata

Kimitoshi Terasaki

Takaharu Kobayashi

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

A user does not have to observe the orientation of a supply-side film core and a roll-up-side film core, when placing them into a case. Shaft sections are disposed at both ends of the supply-side film core and the roll-up-side film core made of resins. The shaft sections have different diameters from each other. Each shaft section has a diameter corresponding to each supporting section. The user can therefore set the ink film in a predetermined position and orientation in the case as a single step.

Ink film with cores having different diameter shaft sections

Growing community of inventors

Fukuoka, Japan

Masahiro Nakashima