Ricoh Company, Ltd.

Hideki Komatsu

Minoru Matsuo

Akiko Tanaka

Yuichi Jibiki

A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A [&#x3a9;] of the film and a volume resistivity of B [&#x3a9;&#xb7;cm] of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A&#x3e;B, and when the film has a thickness of T [cm], the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A [&#x3a9;] of the film and the volume resistivity of B [&#x3a9;&#xb7;cm] of the film satisfy a relationship of: A[&#x3a9;]&#xd7;T[cm]&#x3e;B[&#x3a9;&#xb7;cm]. This film can be prepared by a centrifugal molding method.

Film for use in intermediate image transfer member and method of producing endless-belt-shaped film

A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A &lsqb;&OHgr;&rsqb; of the film and a volume resistivity of B &lsqb;&OHgr;&middot;cm&rsqb; of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A>B, and when the film has a thickness of T &lsqb;cm&rsqb;, the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A &lsqb;&OHgr;&rsqb; of the film and the volume resistivity of B &lsqb;&OHgr;&middot;cm&rsqb; of the film satisfy a relationship of; A&lsqb;&OHgr;&rsqb;'T &lsqb;cm&rsqb;>B &lsqb;&OHgr;&middot;cm&rsqb;. This film can be prepared by a centrifugal molding method.

Method of producing endless-belt-shaped film

A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A &lsqb;&OHgr;&rsqb; of the film and a volume resistivity of B &lsqb;&OHgr;&middot;cm&rsqb; of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A>B, and when the film has a thickness of T &lsqb;cm&rsqb;, the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A &lsqb;&OHgr;&rsqb; of the film and the volume resistivity of B &lsqb;&OHgr;&middot;cm&rsqb; of the film satisfy a relationship of: A &lsqb;&OHgr;&rsqb;&times;T &lsqb;cm&rsqb;>B &lsqb;&OHgr;&middot;cm&rsqb;. This film can be prepared by a centrifugal molding method.

Growing community of inventors

Kanagawa, Japan

Hideki Komatsu