Ricoh Company, Ltd.

Kabushiki Kaisha Toshiba

Tomoko Ogawa

Hisashi Shoji

Hidetoshi Yano

Makoto Obu

Kazuo Hayashi

Ikuo Watanabe

Junichi Terai

Setsuo Suzuki

Yasushi Iseki

Etsuo Noda

Shinsuke Kikui

Katsuhisa Tsuji

Nobutada Aoki

Hironobu Kimura

An image recording apparatus for electrostatically forming a latent image on an image carrier by driving optics in response to multi-level image data. Before the start of an actual image recording operation, a latent image in the form of a test pattern having a plurality of tones is formed on the image carrier by pulse width modulation. A table for correcting image data is generated on the basis of sensed surface potentials of the test pattern. A semiconductor laser included in the optics is driven such that the tone data and the latent image potential remains in a constant relation.

Image recording apparatus

A metal vapor laser apparatus has a gas supply device. The device supplies at least two kinds of gases to a container of the laser apparatus controlled individually. One of the gases is selected from the group of the molecular gas such as hydrogen gas, the other is selected from the group of rare gas such as neon gas. By adjusting the mixture ratio of these gases, the laser beam output is obtained efficiently. The molecular gas should be supplied when a metal lump, such as copper, arranged in the container is melting.

Metal vapor laser apparatus and method

An image recording apparatus for recording an image directly on a recording medium by transferring a toner to the medium. The toner is caused to fly toward the medium by small energy to form a high resolution image. A developing roller transports the toner in a predetermined direction. A flat electrode is located in the vicinity of the developing roller. A control electrode is provided on the flat electrode at a position where the flat electrode is remotest from the developing roller, while being electrically insulated from the flat electrode. The control electrode is made up of a number of recording electrodes and has an opening through which the toner may fly toward the medium.

Direct image recording apparatus using toner

A color image processing device including

Color image processing device

Growing community of inventors

Tokyo, Japan

Tomoko Ogawa