Ricoh Company, Ltd.

Atsushi Ishibe

Motokazu Hasegawa

Sumio Kamoi

Kohji Kamiya

Atsushi Takai

Hiroshi Katabami

Toshikazu Hirakawa

Kazuo Ishida

Makoto Murata

Kazuo Uchida

A heat-resistant endless resin belt including a heat-resistant resin sheet, which can be employed in a thermal fixing apparatus, wherein the sheet includes two cutting work parts in an inclined shape. The two parts are overlapped with each other and bonded with an adhesive to form a bonding part. An external shape displacement f(x), measured via a flatness measuring apparatus, which scans the belt in a width direction thereof, satisfies a following formula wherein 'X' (mm) is a length of the belt in a width direction thereof; 'L' (mm) is a perimeter of the belt and &#x201c;g(x)&#x201d; represents a displacement of an ideal shape of the heat-resistant resin belt, when g(x)=C (a constant), a left side of the formula is set to be a minimum; whilst when g(x) is a variable, the displacement of the ideal shape of the belt is set.

Heat-resistant resin belt, manufacturing method thereof and image forming apparatus

A fixing device configured to fix a toner image onto a recording medium includes a coil for generating a magnetic flux and a heat generation member for generating heat by the magnetic flux; the heat generation member includes a hollow cylinder shape, the coil has a loop-shaped coil disposed in a loop shape to sandwich inner and outer circumference planes of the heat generation member of the hollow cylinder shape, the loop-shaped coil is divided into an inside coil portion, which is positioned in the inner circumference plane side of the heat generation member, and an outside coil portion which is positioned in the outer circumference plane side of the heat generation member, and a terminal portion for connecting both of the coil portions is provided between the inside coil portion and the outside coil portion.

Fixing device and image forming apparatus

Growing community of inventors

Hiratsuka, Japan

Atsushi Ishibe