Ricoh Company, Ltd.

Kazuo Ishida

Hiroshi Itoh

Atsushi Ohta

Sumio Kamoi

Hiroshi Katabami

Atsushi Takai

Toshikazu Hirakawa

Atsushi Ishibe

Yuuya Nakatani

Chiaki Inomata

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 developer-controlling member includes a first plate () and a second plate () attached to the first plate (), the first and second plates () being formed to extend in a longitudinal direction of a developing roller () including a magnet roller; a half blanking fitting projection () is formed on one of the first and second plates (), a fitting hole () fitting to the fitting projection () is formed in the other of the first and second plates (), and the first and second plates are fastened by caulking the fitting projection.

Developer-controlling member, manufacturing method thereof, developing machine using the developer-controlling member, image forming apparatus or printer using the developing machine, and jointed plate

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Atsugi, Japan

Kazuo Ishida