Minolta Company, Ltd.

Minolta Camera Kabushiki Kaisha

Masami Eda

Akihiro Nakamura

Hiroshi Nakamura

Hideyuki Yoshida

Hitoshi Saito

Shinichi Takemoto

Akihiro Kawasaki

Tamotsu Sakuraba

Hiroshi Toda

Masayuki Nakama

Nozomi Shinya

Keisuke Ito

Akihiro Kura

Toner bottle

A nozzle for connecting between a jet stream spout and a pulverizing room of a jet mill. The nozzle has two nozzle parts. One nozzle part has the shape of a truncated cone with a first cone angle and is located at a jet stream spout side. The other nozzle part has the shape of a truncated cone with a second cone angle different from the first cone angle and is located at a pulverizing room side of the first nozzle part.

Nozzle for jet mill

A toner for developing electrostatic latent images is provided which contains wax particles of a spherical shape and of a small particle size uniformly distributed in binder resin.

Toner for developing electrostatic latent images with wax particles of

In a powder filling method for supplying the powder from a powder supply hopper into a container, the air inside the hopper and/or the container is pressured and then restored to an atmospheric pressure by discharging the pressured air in the hopper and/or the container. With this method, even a powder of an inferior filling performance can be filled into a container to a high density.

Powder filling method

An one-component developing device includes an electrically conductive member which is located in a region extending from a position downstream, with respect to a moving direction of a surface of a toner carrying member, to a developing region, and is in contact with the surface of the toner carrying member. A surface of the electrically conductive member contacting the developing sleeve is formed of material, of which charge polarity is shifted to the same polarity side as a regular charge polarity of the toner in view of charge series, and which contains highly conductive material dispersed therein.

One-component developing device with system for removing surplus toner

An electrophotographic image forming apparatus with reversal development system, wherein a photosensitive member is charged to first polarity by a first charger and then charged to second polarity opposite to the first polarity by a second charger which is provided at downstream side of the first charger with respect to the rotational direction of the photosensitive member prior to an image formation so as to form uniform images regardless of the number of image formation.

Electrophotographic image forming apparatus with reversal development

Growing community of inventors

Kobe, Japan

Masami Eda