Toshiba Lighting & Technology Corporation

Harison Toshiba Lighting Corporation

Masaaki Kawamura

Ichiro Yokozeki

Hiroyuki Doi

Takashi Terai

Ioshiya Suzuki

Teiji Shimokawa

An induction heating roller, a fixing apparatus and an image forming apparatus are disclosed as including a heating roller (TR) comprised of a hollow roller base body (BB), composed of electrically insulating material, and a plurality of secondary coil components (ws), composed of closed circuits, respectively, which are formed over the roller base body. The heating roller (TR) internally receives an induction coil unit (IC) including a primary coil (wp) which is coupled with the secondary coils in a core-less transformer coupling relationship. The secondary coil components (ws) of the heating roller (TR) have a secondary resistance value (R) which is nearly equal to a secondary reactance (X), i.e. in case of R/X=&#x3b1;, a formula is expressed as 0.1&#x3c;&#x3b1;&#x3c;10. Further, the primary coil (wp) of the induction coil unit (IC) is comprised of a plurality of coil components which are connected between a wire pair (WP) in parallel to one another.

Induction heating roller device, heating roller for induction heating roller device, fixing apparatus and image forming apparatus

An electrodeless discharge lamp system includes an excitation coil placed in proximity of the electrodeless discharge lamp, a resonance circuit for supplying appropriate power to the excitation coil, and a high frequency power source driver and wherein, the combined output is achieved by operating the parallel connected power sources in synchronization or approximately in synchronization with each other.

Electrodeless discharge lamp system

Growing community of inventors

Kanagawa-ken, Japan

Masaaki Kawamura