Samsung Electronics Co., Ltd.

S-printing Solution Co., Ltd.

Manabu Takezawa

Tomohito Chokan

Osamu Watanabe

Seiro Yuge

Daisuke Fukuoka

Keiichi Ishikawa

Kazutoshi Takenoshita

Hiroshi Miyao

Adachi Mami

Mami Adachi

The present disclosure relates to an electrostatic charger and an electrostatic precipitator securing a wide space for charging suspended fine particles contained in a processing airflow. The electrostatic charger includes a discharge electrode formed of a plurality of fibrous conductors and provided to generate and diffuse ions by a discharge, a ground electrode maintained at a ground potential and provided to attract the ions generated and diffused by the discharge electrode to charge suspended fine particles contained in a processing airflow by the ions, where the discharge electrode is disposed between the ground electrodes in the processing airflow, and all or at least a part of the plurality of fibrous conductors of the discharge electrode are disposed on a downstream side of the processing airflow further than an end portion of the ground electrode on the most upstream side of the processing airflow.

Electrostatic charger and electrostatic precipitator

Disclosed herein is a charging apparatus and precipitator. The charging apparatus includes a plurality of counter electrodes formed in a plate shape and arranged in a direction intersecting with a ventilation direction to allow respective surfaces thereof to follow the ventilation direction, and a plurality of high voltage electrodes formed in a wire shape and installed between the plurality of counter electrodes. The plurality of counter electrodes includes a first counter electrode having a first electrode area, and a second counter electrode having a second electrode area less than the first electrode area. The first counter electrode and the second counter electrode are alternately arranged.

Charging apparatus and precipitator

An electrophotographic photoreceptor includes a conductive support, a photosensitive layer on the conductive support, and a protective layer on the photosensitive layer. The protective layer includes a binder resin, metal oxide particles, and fluororesin particles. The metal oxide particles include, on a surface thereof, a first surface-treating agent including fluorine atoms, and a second surface-treating agent including a polymerizable reactive group and a hydrophobic group. At least some of the metal oxide particles are supported on a surface of the fluororesin particles. The fluororesin particles are fixed to the binder resin via the at least some of the metal oxide particles supported on the surface of the fluororesin particles.

Photoreceptor for electrophotography and image forming apparatus employing the same

An electrophotographic photoreceptor having excellent cleaning performance and high durability for a long time and an electrophotographic imaging apparatus employing the electrophotographic photoreceptor are provided. The electrophotographic photoreceptor includes a photosensitive layer and a protective layer sequentially formed in this stated order on a conductive support. The protective layer includes a metal oxide surface-treated with a phosphorous-containing compound, wherein the metal oxide includes at least one selected from a group consisting of tin oxide, zinc oxide, and titanium oxide. The phosphorous-containing compound is a polymer including a phosphorus-oxoacid moiety reacting with the metal oxide, a photo-reactive moiety, and a lubricative moiety including at least one selected from a group consisting of fluorine and silicon at side chains.

Electrophotographic photoreceptor and electrophotographic imaging apparatus employing the same

An organic photoconductor including an electrically conductive substrate, a photosensitive layer disposed on the electrically conductive substrate, and a protection layer disposed on the photosensitive layer, wherein the protection layer includes a polymer composition and a plurality of electrically conductive metal oxide particles, and wherein the polymer composition is a product of a curing reaction with a multifunctional spherical dendrimer, a first multifunctional acryl compound having a urethane bond, and a second multifunctional acryl compound having a silicon-containing group and a fluorine-containing group.

Organic photoconductor and electrophotographic apparatus and process cartridge including the organic photo conductor

An organic photoreceptor including a photosensitive layer disposed on an electrically conductive substrate; and a protective layer disposed on the photosensitive layer, wherein the protective layer includes a cured product of a multifunctional acrylic oligomer including a urethane group and a multifunctional curable compound including a dendrimeric structure.

Growing community of inventors

Yokohama, Japan

Manabu Takezawa