Ricoh Company, Ltd.

Hideyuki Yasufuku

Toshiyuki Kabata

Hiroyuki Shimada

Hiroyoshi Sekiguchi

Takeshi Shibuya

Yoshitaka Hayashi

Noboru Sasa

Toshishige Fujii

Noriyuki Iwata

Toshihide Sasaki

Masayuki Fujiwara

Kengo Makita

Kawori Tanaka

Kazumi Kuwata

A heater lamp for fixation and a method of producing the heater lamp are provided. The heater lamp includes a heat generator and a protective casing to cover the heat generator, in which an amount of carbon in an external surface of the protective casing as detected by an X-ray photoelectron spectroscopic method is equal to or less than 12 atomic %. The method of producing a heater lamp for fixation includes preparing a heat generator; preparing a protective casing to cover the heat generator; and heating the heat generator in an atmosphere containing oxygen gas.

Heater lamp for fixation, fixing device, and image forming apparatus

A write-once-read-many optical recording medium is disclosed that includes a support substrate; a recording layer on the support substrate, the recording layer containing an oxide of one of a metal and a metalloid as a principal component; and a layer adjacent to the recording layer. The recording layer includes a region where a constituent element of the adjacent layer is dispersed. Recording and reproduction are performable with laser light of a blue wavelength region.

Worm optical recording medium

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Tokyo, Japan

Hideyuki Yasufuku