Fujitsu Corporation

Masanori Nishido

Toshiaki Suzuki

Sachio Sasaki

Akira Nagahara

Seiji Hayashimoto

Nobuo Kuwabara

Yoshio Yamaguchi

Mikio Oshiro

Toshio Tooda

Hiroshi Kera

Toshimitsu Minemura

Haruyasu Watanabe

Hisashi Hanzawa

Yoshiya Ishiyama

Mituru Sato

A reference potential generating circuit for liquid crystal display apparatus includes an outside reference potential generating circuit for generating a pair of outside reference potentials, and an inside reference potential generating circuit for generating a pair of inside reference potentials, which are between the outside reference potentials and are independent of the outside reference potentials. The outside or the inside reference potential generating circuit has a variable resister for correcting a deviation of a center potential of the outside or inside reference potentials.

Reference potential generating circuit for liquid crystal display apparatus

An electrophotographic image forming apparatus including a toner circulating mechanism for recovering a residual toner scraped from a photosensitive drum to a developing device. The developing device includes a housing for defining a toner chamber, a developing roller rotatably mounted in the housing, an agitator rotatably mounted in the housing and provided in the toner chamber, and a partition member mounted to the housing to define a carrier chamber between the partition member and the developing roller. The toner circulating mechanism directly returns the residual toner scraped from the photosensitive drum to the toner chamber in the developing device. The toner chamber may contain a foreign matter removing device. The partition member may have various shapes.

Electrophotographic image forming apparatus having a device for

Growing community of inventors

Inagi, Japan

Masanori Nishido