Matsushita Electric Industrial Co., Ltd.

Yuji Terashima

Takashi Haruguchi

Shogo Horinouchi

Yutaka Miyazono

Yoshinobu Soeda

Kazumi Otsubo

Hirohiko Ohwaki

There is disclosed an optical disk unit. Optical parts, including a laser unit and objective, are integrally mounted on a bobbin, and focusing coils and tracking and feed coils are mounted on the bobbin. The bobbin is resiliently supported, and is slidable along guide shafts extending radially of an optical disk loaded on the optical disk unit. The bobbin is moved by the focusing coils and the tracking and feed coils, thereby effecting a focusing drive, a tracking drive and a feed drive. With this construction, the optical disk unit can be compact in size, and light in weight.

Optical disk unit

A dot-matrix impact printer includes a print head in a housing for printing a recording sheet fed around a platen. The recording sheet is pressed against the platen by a sheet presser roller. A roller cover or a flap is disclosed as a sound insulating wall closely to the sheet presser roller and has an edge held against the housing. The space above the print head is closed by the housing, the platen, the sheet presser roller, and the platen, so that the impact noise produced when the printer is in operation will not leak out of the housing, while at the same time the recording sheet fed around the platen is not blocked by the closure mechanism.

Printing device having a sound insulating wall

Growing community of inventors

Mizuma, Japan

Yuji Terashima