Sharp Kabushiki Kaisha Corporation

Takashi Sugito

Naoyuki Yamane

Hisashi Kunihiro

Masaru Tsuji

Yoshinobu Tateishi

Toshihide Ohgoshi

Yuhi Akagawa

Hiroshi Kawahito

Masato Asanuma

Yoshikazu Kondoh

Mitsuyoshi Terada

Keiji Kato

Hiroshige Araki

Yukinori Andou

Yasuo Imai

Katsuzo Uchida

Miki Demoto

Atsuyuki Kato

Hideki Gotoh

A toner image fixing device comprises a heat roller and a lamp heater. The lamp heater is formed from a nicrome wire stretched between clamp terminals, a silica tube and ceramic holders closely fitted to respective ends of the silica tube and which have an external diameter which is substantially the same as the diameter of the heating roller. The lamp heater is secured by a lamp holder and frame to the shaft of the heat roller. The heat roller is rotatably supported by a bearing and is driven by a driving gear.

Toner image fixing device having improved lamp heater

A paper feeding device includes paper feed rollers in a paper hand feed path and a paper feed detection switch in front of the paper feed rollers. A drive section is provided for driving the paper feed rollers. A controller is provided such that the paper feed rollers pinch and hold the leading edge of a hand feed sheet of paper when the paper feed detection switch turns on.

Paper feeding device having paper hand feed path

A toner hopper is arranged to feed the toner stored in itself to a developing unit and have a stirring roller and a feeding roller respectively supported rotatably, an interlocking mechanism for transmitting the force of rotation to the stirring roller, a manually rotating mechanism for manually rotating the stirring roller, and an interlocking restricting mechanism. The interlocking mechanism restricts the operation of the interlocking mechanism such that the force of rotation of the stirring roller is not transmitted to the feeding roller while the manually rotating mechanism supplies force of rotation to the stirring roller.

Toner hopper having stirring and feeding rollers

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Tenri, Japan

Takashi Sugito