Inventor

YANAGAWA YOSHIKI

GB44 patents

⚠️ This page may combine multiple inventors who share the name “YANAGAWA YOSHIKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

YANAGAWA YOSHIKI

RICOH CO LTD

Scorotron corona charger, process cartridge, and image forming apparatus

Electrophotographic photoconductor having charge blocking and moire preventing layers

Electrophotographic photoconductor, method for producing the same, image forming process, image forming apparatus and process cartridge

Image bearing member and image forming apparatus using the same

Ink, method of manufacturing ink, and ink cartridge

Copolymer, aqueous ink, and ink cartridge

Gallium phthalocyanine compound, and image bearing member, image forming method, image forming apparatus, and process cartridge using the gallium phthalocyanine compound

Method for preparing photoreceptor, photoreceptor prepared by the method, and image forming method and apparatus and process cartridge using the photoreceptor

RICOH KK

Electrophotographic photoconductor, and image formation method, image formation apparatus, and process cartridge for image formation apparatus using the same

Electrophotographic photoreceptor, and image forming method, apparatus and process cartridge therefor using the photoreceptor

Electrophotographic photoreceptor, and image forming method, apparatus and process cartridge therefor using the photoreceptor

Photoconductor, manufacturing method thereof, image forming process and image forming apparatus using photoconductor, and process cartridge

Latent electrostatic image bearing member, process cartridge, image forming apparatus, and image forming process

YANAGAWA YOSHIKI

Ink, method for producing ink, ink storage container, recording device, and recording method

Fullerene derivative, and method of preparing the same

Fullerene derivative, and method of preparing the same

Electrophotographic photoconductor, production method thereof, image forming method and image forming apparatus using photoconductor, and process cartridge

Ink, recorded matter, ink container, recording device, and recording method

HARADA SHIGEYUKI

Copolymer, ink including copolymer, and ink-stored container

Copolymer, aqueous ink, and ink cartridge

Copolymer, coloring material dispersion, ink, and ink store container

Copolymer, aqueous ink, and ink cartridge

FUKUOKA MASAYUKI

Ink, ink stored container, inkjet printing method, and inkjet printing device

Copolymer, ink, and ink container

KATOH KEITA

Ink discharge device and ink discharge method

Ink, ink cartridge, inkjet recording device, and copolymer

KOIZUKA YUUSUKE

Ink, method of manufacturing ink, and ink cartridge

Ink and method for producing same, and ink stored container, printing method, and printing apparatus

ARAI RYOTA

Solution, organic semiconductor material, organic semiconductor film, electronic device and electronic equipment

Substituent-eliminable diketopyrrolopyrrole derivative, organic semiconductor material precursor solution, organic semiconductor material, and organic semiconductor material film

SAKAGUCHI HIROMI

Hydroxygallium phthalocyanine composite pigment, electrophotographic photoconductor containing the same, and image forming device and process cartridge for image forming device using the same

Gallium phthalocyanine compound, gallium phthalocyanine composite pigment, method for preparing gallium phthalocyanine composite pigment, and electrophotographic photoconductor

MATSUYAMA AKIHIKO

Ink, ink container, inkjet recording device, and recorded matter

Ink, ink stored container, inkjet recording apparatus, and recorded matter

TAMAI TAKASHI

Ink and processing liquid set, image forming method, and image forming device

KAWASAKI YOSHIAKI

Image forming apparatus, image forming method, and process cartridge

SHIMOYAMA KEISUKE

Electrophotographic photoconductor, image forming apparatus, image forming method, and process cartridge

YASUDA MAKOTO

Corona charger, and process cartridge and image forming apparatus using same

NISHIMURA HIDEAKI

Drying device, liquid discharge apparatus, and drying method

IWASAKI RYOTA

Drying device and image forming apparatus

TAKEHIRA OSAMU

Drying device and printer incorporating the drying device

OHTA MASAFUMI

Method of preparing complex-AZO pigment and complex-AZO pigment thereof

HIROSE MITSUAKI

Electrophotographic photoreceptor and method of preparing the photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptor

TADA HIROMI

Electrophotographic photoreceptor, and image forming apparatus and process cartridge therefor using the photoreceptor