Matsushita Electric Industrial Co., Ltd.

Matsushita Graphic Communication Systems, Inc.

Matsushita Electric Ind. Co., Ltd.

Michio Matsuki

Isamu Akasaki

Nobuhide Matsuda

Masaaki Ohsima

Masaaki Ohshima

Hiromichi Kagi

Hidehalu Fukazawa

Yoshio Tsukamoto

A semiconductive laser comprises an active layer made in the shape of a crescent moon with the distribution of refractive index approximated by a quadratic curve. InGaAsP layers with a refractive index smaller than that of the active layer are disposed on both sides of the active layer.

Semiconductor laser

A recording head for use in a facsimile communication system comprises a plurality of recording elements each having an effective recording area surrounded by an ineffective area. The recording elements are arranged on a plane in a step-like configuration in which the elements are displaced both longitudinally and transversely with respect to another such that there is a spacing between the effective areas of the recording elements in the longitudinal direction and there is no spacing between them in the transverse direction. The recording head is so oriented that the longitudinal direction corresponds to the direction of line scan.

Recording head for facsimile receivers

Growing community of inventors

Kawasaki, Japan

Michio Matsuki